Develop Reference

How to click button inside listview

I know this problem already asked many times but i still can't get effective way for solving this. I try for use ListView with clickable/editable widget and Android : How to set onClick event for Button in List item of ListView as reference but the result is i need click button several time for executing my program. Here my program
LeadActivity.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".LeadSalesActivity">
<LinearLayout
android:background="#E9ECEB"
android:layout_margin="20dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<ImageView
android:id="#+id/b_menusamping2"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_margin="20dp"
android:background="#drawable/menu_button"
android:backgroundTint="#27D01B"/>
</LinearLayout>
<LinearLayout
android:layout_marginTop="10dp"
android:layout_weight="1"
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Welcome,"
android:textSize="20sp"
android:textStyle="italic"
android:textColor="#android:color/black"/>
<TextView
android:id="#+id/t_username3"
android:layout_width="150dp"
android:layout_height="wrap_content"
android:text="Rizaldi"
android:textColor="#android:color/black"
android:textSize="25sp"
android:textStyle="bold"
android:fontFamily="#font/action_man_bold"/>
</LinearLayout>
<LinearLayout
android:id="#+id/linear_refresh2"
android:layout_margin="20dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#android:color/white">
<ImageView
android:backgroundTint="#27D01B"
android:layout_width="30dp"
android:layout_height="30dp"
android:layout_margin="10dp"
android:background="#drawable/icon_update"/>
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:layout_marginLeft="20dp"
android:textStyle="bold"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Lead"
android:textColor="#android:color/black"
android:textSize="20sp"/>
<TextView
android:textStyle="bold"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="5dp"
android:text="("
android:textSize="20sp"
android:textColor="#android:color/black"/>
<TextView
android:textStyle="bold"
android:id="#+id/count_lead"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="100"
android:textColor="#android:color/black"
android:textSize="20sp"/>
<TextView
android:textStyle="bold"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text=")"
android:textSize="20sp"
android:textColor="#android:color/black"/>
<Button
android:id="#+id/btn_add"
android:layout_marginRight="20dp"
android:backgroundTint="#android:color/holo_blue_light"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Tambah Lead"
android:textAllCaps="false"/>
</LinearLayout>
<LinearLayout
android:padding="20dp"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Tanggal"
android:textColor="#android:color/black"
android:textSize="20sp"/>
<TextView
android:layout_marginLeft="30dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Lead"
android:textSize="20sp"
android:textColor="#android:color/black"/>
<TextView
android:layout_marginLeft="40dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Telp"
android:textColor="#android:color/black"
android:textSize="20sp"/>
</LinearLayout>
<ListView
android:id="#+id/listviewlead"
tools:listitem="#layout/c_lead"
android:layout_width="match_parent"
android:layout_height="400dp"
android:layout_weight="1" />
</LinearLayout>
</ScrollView>
</LinearLayout>
<LinearLayout
android:layout_marginTop="30dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"/>
<Button
android:id="#+id/back6"
android:layout_marginRight="20dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="back"/>
</LinearLayout>
c_lead.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:id="#+id/t_tgl"
android:focusable="false"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="8dp"
android:text="Tgl"
android:textSize="15sp"
android:textStyle="italic"
android:textColor="#000000" />
<TextView
android:id="#+id/t_lead4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="8dp"
android:text="Lead"
android:textSize="15sp"
android:textColor="#000000" />
<TextView
android:id="#+id/t_numberphone"
android:focusable="false"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="8dp"
android:gravity="right"
android:text="No.Telp"
android:textSize="15sp"
android:textColor="#android:color/black"/>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"/>
<LinearLayout
android:id="#+id/btn_edit"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:background="#drawable/kotak_abu"
android:layout_marginTop="5dp">
<ImageButton
android:layout_margin="10dp"
android:layout_width="30dp"
android:layout_height="30dp"
android:background="#drawable/pencil_icon"/>
</LinearLayout>
<LinearLayout
android:id="#+id/btn_delete"
android:layout_marginLeft="3dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:background="#drawable/kotak_abu"
android:layout_marginRight="10dp"
android:layout_marginTop="5dp">
<ImageButton
android:layout_margin="10dp"
android:layout_width="30dp"
android:layout_height="30dp"
android:background="#drawable/delete_icon"/>
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:id="#+id/t_alamat"
android:focusable="false"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="8dp"
android:text="Alamat"
android:textColor="#android:color/black"
android:textSize="15sp"
android:layout_marginLeft="20dp"/>
</LinearLayout>
MyAdapter
public View getView(final int _position, View _v, ViewGroup _container) {
LayoutInflater _inflater = (LayoutInflater)getBaseContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View _view = _v;
if (_view == null) {
_view = _inflater.inflate(R.layout.c_lead, null);
}
final HashMap<String, Object> hashMap = _data.get(_position);
final TextView t_tanggal = (TextView) _view.findViewById(R.id.t_tgl);
final TextView t_lead = (TextView) _view.findViewById(R.id.t_lead4);
final TextView t_alamat = (TextView) _view.findViewById(R.id.t_alamat);
final TextView t_numberphone = (TextView) _view.findViewById(R.id.t_numberphone);
final LinearLayout btn_edit = (LinearLayout) _view.findViewById(R.id.btn_edit);
final LinearLayout btn_delete = (LinearLayout) _view.findViewById(R.id.btn_delete);
String dateString = _data.get(_position).get("create_date").toString().replace("-","");
SimpleDateFormat format1 = new SimpleDateFormat("yyyyMMddHHmm");
format1.setTimeZone(TimeZone.getTimeZone("GMT+7"));
SimpleDateFormat format2 = new SimpleDateFormat("dd-MM-yyyy");
try {
Date date = format1.parse(dateString);
String dateFinal = format2.format(date);
t_tanggal.setText(String.valueOf((long)(_position + 1)).concat(".").concat(dateFinal));
} catch (ParseException e) {
e.printStackTrace();
}
t_lead.setText(_data.get((int)_position).get("type").toString());
t_alamat.setText(_data.get((int)_position).get("street").toString());
if (_data.get((int)_position).get("mobile").toString().equals(true)){
t_numberphone.setText("Tanpa Nomor");
} else {
t_numberphone.setText(_data.get((int)_position).get("phone").toString());
}
btn_edit.setFocusable(false);
btn_edit.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
i.setClass(getApplicationContext(), AddLeadSalesActivity.class);
startActivity(i);
}
});
btn_delete.setFocusable(false);
btn_delete.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Toast.makeText(getApplicationContext(), "Data Tidak Bisa Dihapus", Toast.LENGTH_SHORT).show();
}
});
return _view;
}
Is there any mistake inside my program? How to solve this?

Android: Custom List View is not working properly

My apologies for not providing a proper source code.
basically what I have in my list view xml layout is:
listleave.xml
leaveSummary.xml
leavedB
Custom Adapter
ApplyLeave
I'm creating an app where I have a list view and when I'm running my app I'm getting an error in Locgat.
Caused by:java.lang.NullPointerException: Attempt to invoke virtual
method 'void
android.widget.ListView.setAdapter(android.widget.ListAdapter)' on a null
object reference
at com.example.huzai.civilsoft1.ApplyLeave.loadDataInListView(ApplyLeave.java:258 )
at com.example.huzai.civilsoft1.ApplyLeave.onCreate(ApplyLeave.java:84)
In the line loadDataInListView when I'm not commenting l1.setAdapter(customAdapter); the app crashes but when I'm commenting it works properly.
Result of not commenting: l1.setAdapter(customAdapter);
ApplyLeave Activity
public class ApplyLeave extends AppCompatActivity {
LeaveService myDb;
//Declaration EditTexts
EditText editstartDate;
EditText editendDate;
DatePickerDialog datePickerDialog;
CheckBox checkgoingAbroad;
Spinner spinnertypess;
Spinner editleavess;
EditText editremarks;
EditText editnoOfDays1;
TextView noOfDays;
TextView endd;
Button btnApply;
Button addfield;
Button deletefield;
LinearLayout parentlinearlayout;
ListView l1;
ArrayList<Leave> arrayList;
CustomAdapter customAdapter;
#RequiresApi(api = Build.VERSION_CODES.N)
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_apply_leave);
myDb = new LeaveService (this);
checkgoingAbroad =(CheckBox) findViewById(R.id.GoingAbroad);
spinnertypess = (Spinner)findViewById(R.id.types);
editleavess = (Spinner)findViewById(R.id.Leaves);
editremarks = (EditText)findViewById(R.id.reason);
editnoOfDays1 = (EditText)findViewById(R.id.noOfDays);
parentlinearlayout =
(LinearLayout)findViewById(R.id.parent_linear_layout);
addfield = (Button)findViewById(R.id.addField);
deletefield = (Button)findViewById(R.id.removeField);
endd = (TextView)findViewById(R.id.date);
l1 = (ListView)findViewById(R.id.leaveApplicationSummary);
btnApply = (Button)findViewById(R.id.apply);
AddData();
arrayList = new ArrayList<>();
loadDataInListView();
//Created a method for loadDataInListView
private void loadDataInListView() {
arrayList = myDb.getAllData();
customAdapter = new CustomAdapter(this,arrayList);
l1.setAdapter(customAdapter);
customAdapter.notifyDataSetChanged();
}
private void AddData() {
btnApply.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
boolean isInserted = myDb.insertData("", checkgoingAbroad.toString(), spinnertypess.toString(), editleavess.toString(), editnoOfDays1.getText().toString(), editstartDate.getText().toString(), editendDate.getText().toString(), editremarks.getText().toString());
if (isInserted == true){
Toast.makeText(ApplyLeave.this, "Data Inserted Successfully",Toast.LENGTH_LONG).show();
} else {
Toast.makeText(ApplyLeave.this, "Data Not Inserted",Toast.LENGTH_LONG).show();
}
}
});
}
Result of commenting: //l1.setAdapter(customAdapter);
CustomAdapter class
public class CustomAdapter extends BaseAdapter {
Context context;
ArrayList<Leave> arrayList;
public CustomAdapter(Context context, ArrayList<Leave>arraylist) {
this.context = context;
this.arrayList = arraylist;
}
#Override
public int getCount() {
return this.arrayList.size();
}
#Override
public Object getItem(int position) {
return arrayList.get(position);
}
#Override
public long getItemId(int position) {
return position;
}
#SuppressLint("ViewHolder")
#Override
public View getView(int position, View convertView, ViewGroup parent) {
LayoutInflater inflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = inflater.inflate(R.layout.leavesummary, null);
TextView types = (TextView)convertView.findViewById(R.id.textViewtypes);
TextView startDate = (TextView)convertView.findViewById(R.id.textViewstartDate);
TextView endDate = (TextView)convertView.findViewById(R.id.textViewendDate);
TextView leavetype = (TextView)convertView.findViewById(R.id.textViewleaveType);
TextView noOfDays = (TextView)convertView.findViewById(R.id.textViewnoOfDays);
TextView reason = (TextView)convertView.findViewById(R.id.textViewreason);
Leave leave = arrayList.get(position);
types.setText(leave.getTypes());
startDate.setText(leave.getStartDate());
endDate.setText(leave.getEndDate());
leavetype.setText(leave.getLeaves());
noOfDays.setText(leave.getNoOfDays());
reason.setText(leave.getReason());
return convertView;
}
}
listleave.xml Over here I'm using ConstraintLayout
<android.support.constraint.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/background">
<ListView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/leaveApplicationSummary">
</ListView>
</android.support.constraint.ConstraintLayout>
leaveSummary.xml
<android.support.constraint.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/background">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Leave Application Summary"
android:textColor="#080808"
android:textSize="20dp"/>
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="28dp"
android:layout_marginLeft="28dp"
android:layout_marginTop="72dp"
android:text="Applicant Name :"
android:textColor="#080808"
android:textSize="20dp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="#+id/textViewApplicantName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="188dp"
android:layout_marginLeft="188dp"
android:layout_marginTop="72dp"
android:text="Huzaifa [001]"
android:textColor="#080808"
android:textSize="20dp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="#+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="28dp"
android:layout_marginLeft="28dp"
android:layout_marginTop="116dp"
android:text="Type of Leave :"
android:textColor="#080808"
android:textSize="20dp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="#+id/textViewtypes"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="180dp"
android:layout_marginLeft="180dp"
android:layout_marginTop="116dp"
android:text="TextView"
android:textColor="#080808"
android:textSize="20dp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="#+id/textView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="24dp"
android:layout_marginLeft="24dp"
android:layout_marginTop="164dp"
android:text="Leave Start Date :"
android:textColor="#080808"
android:textSize="20dp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="#+id/textViewstartDate"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="188dp"
android:layout_marginLeft="188dp"
android:layout_marginTop="164dp"
android:text="TextView"
android:textColor="#080808"
android:textSize="20dp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="#+id/textView4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="28dp"
android:layout_marginLeft="28dp"
android:layout_marginTop="208dp"
android:text="Rejoining Date :"
android:textColor="#080808"
android:textSize="20dp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="#+id/textViewendDate"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="180dp"
android:layout_marginLeft="180dp"
android:layout_marginTop="208dp"
android:text="TextView"
android:textColor="#080808"
android:textSize="20dp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="#+id/textView5"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="32dp"
android:layout_marginLeft="32dp"
android:layout_marginTop="248dp"
android:text="Leave Type :"
android:textColor="#080808"
android:textSize="20dp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="#+id/textViewleaveType"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="180dp"
android:layout_marginLeft="180dp"
android:layout_marginTop="248dp"
android:text="TextView"
android:textColor="#080808"
android:textSize="20dp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="#+id/textView6"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="24dp"
android:layout_marginLeft="24dp"
android:layout_marginTop="288dp"
android:text="Total Days Applied :"
android:textColor="#080808"
android:textSize="20dp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="#+id/textViewnoOfDays"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="216dp"
android:layout_marginLeft="216dp"
android:layout_marginTop="288dp"
android:text="TextView"
android:textColor="#080808"
android:textSize="20dp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="#+id/textView7"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="28dp"
android:layout_marginLeft="28dp"
android:layout_marginTop="332dp"
android:text="Remarks :"
android:textColor="#080808"
android:textSize="20dp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="#+id/textViewreason"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="144dp"
android:layout_marginLeft="144dp"
android:layout_marginTop="332dp"
android:text="TextView"
android:textColor="#080808"
android:textSize="20dp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="bottom"
android:layout_margin="15dp"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<Button
android:id="#+id/delete"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Delete" />
<Button
android:id="#+id/edit"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Edit" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<Button
android:id="#+id/back"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:text="Back" />
</LinearLayout>
</LinearLayout>
</android.support.constraint.ConstraintLayout>
apply_leave.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/background"
tools:context=".ApplyLeave">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/parent_linear_layout"
android:layout_margin="15dp"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<CheckBox
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/GoingAbroad"
android:hint="Going Abroad"
android:inputType="text"
/>
</LinearLayout>
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="Need Advance Payment?"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<Spinner
android:id="#+id/types"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:entries="#array/types"
/>
</LinearLayout>
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="Leave Type"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<Spinner
android:id="#+id/Leaves"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:entries="#array/leaves"
/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/noOfDays"
android:hint="No. of Days"
android:inputType="number"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<Button
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:id="#+id/addField"
android:text="+"/>
<Button
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:id="#+id/removeField"
android:text="-" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Leave starts on" />
<EditText
android:id="#+id/startDate"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:clickable="true"
android:editable="false"
android:hint="Select" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Rejoining will be on" />
<EditText
android:id="#+id/endDate"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:clickable="true"
android:editable="false"
android:hint="Select" />
</LinearLayout>
<EditText
android:id="#+id/reason"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="Remarks" />
<TextView
android:id="#+id/days"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Total leave days = 0"/>
<TextView
android:id="#+id/date"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Leave ends on = "/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="15dp"
android:gravity="bottom">
<Button
android:id="#+id/cancelButton"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Cancel" />
<Button
android:id="#+id/apply"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Apply" />
</LinearLayout>
</LinearLayout>
</LinearLayout>
Please tell me where I'm going wrong.

You are getting null l1.
Confirm your id of ListView in your activity_apply_leave.xml. It should be leaveApplicationSummary.
EDIT:
Your ListView is in listleave.xml but you are using activity_apply_leave.xml in your Activity.
Move your ListView from listleave.xml to activity_apply_leave.xml.

EditText OnFocusChangeListener() doesn't hide cursor and view

I made an EditText OnFocusChangeListener that supposedly hides the cursor and another view when it's not in focus (i.e. clicking anywhere on the screen aside from the EditText will hide those items). Clicking on the EditText is the only time that will display them.
This is my OnFocusChangeListener for my EditText pageTitle:
pageTitle.setOnFocusChangeListener(new View.OnFocusChangeListener() {
#Override
public void onFocusChange(View view, boolean b) {
if(b) {
pageTitle.setCursorVisible(true);
saveCancelBar.setVisibility(View.VISIBLE);
} else {
pageTitle.setCursorVisible(false);
saveCancelBar.setVisibility(View.GONE);
}
}
});
I also made an OnclickListener:
pageTitle.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
pageTitle.setCursorVisible(true);
saveCancelBar.setVisibility(View.VISIBLE);
}
});
The OnClickListener works but not the OnFocusListener. Ideally, pageTitle's cursor and saveCancelBar are initially hidden and will only appear when pageTitle is clicked.
This my XML code:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
tools:ignore="missingPrefix"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/white"
tools:context="app.wanderast.activity.AddPhotoActivity">
<LinearLayout
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/white"
android:orientation="horizontal">
<TextView
android:id="#+id/back_arrow"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/arrow_left"
android:textSize="20sp"
android:clickable="true"
android:textColor="#color/black" />
</LinearLayout>
<LinearLayout
android:id="#+id/header"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="15dp"
android:layout_marginStart="10dp"
android:layout_marginEnd="10dp"
android:layout_below="#id/toolbar"
android:orientation="vertical">
<EditText
android:id="#+id/title"
android:focusable="true"
android:focusableInTouchMode="true"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:minHeight="36dp"
android:background="#color/transparent"
android:maxLength="64"
android:privateImeOptions="nm"
android:inputType="textNoSuggestions|textMultiLine"
android:cursorVisible="false"
app:autoSizeTextType="uniform"
app:autoSizeMinTextSize="16sp"
app:autoSizeMaxTextSize="24sp"
app:autoSizeStepGranularity="4sp"
android:textColor="#color/grey700"/>
<View
android:layout_width="100dp"
android:layout_height="2dp"
android:layout_marginTop="3dp"
android:background="#color/grey700"
/>
<LinearLayout
android:id="#+id/sort"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#id/header"
android:layout_marginTop="20dp"
android:clickable="true"
android:gravity="bottom"
android:orientation="horizontal"
android:visibility="gone">
<TextView
android:id="#+id/sort_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="3dp"
android:text="List View"
android:textColor="#color/grey700"
android:textSize="14sp"/>
<TextView
android:id="#+id/sort_icon"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/chevron_circle_down"
android:textColor="#color/grey700"
android:textSize="14sp"/>
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:id="#+id/linearLayout">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/add_photo_layout"
android:layout_marginTop="150dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:gravity="center"
android:layout_centerInParent="true">
<TextView
android:id="#+id/placeholder"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="40dp"
android:layout_marginEnd="40dp"
android:layout_marginBottom="30dp"
android:background="#null"
android:minLines="0"
android:text="Add your first travel moment to your story"
android:textAlignment="center"
android:textColor="#color/black"
android:textSize="20sp" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:gravity="center">
<LinearLayout
android:id="#+id/capture_photo_button"
android:layout_marginBottom="15dp"
android:paddingStart="5dp"
android:paddingEnd="5dp"
android:paddingTop="10dp"
android:paddingBottom="10dp"
android:layout_width="170dp"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:gravity="center|center_vertical"
android:background="#drawable/green_pill_thick">
<TextView
android:id="#+id/capture_photo_icon"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="18sp"
android:text="#string/camera"
android:layout_gravity="center_horizontal|center_vertical"
android:textColor="#color/green500"
android:layout_marginEnd="5dp"/>
<TextView
android:id="#+id/capture_photo_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Capture Moment"
android:layout_gravity="center_horizontal|center_vertical"
android:textColor="#color/green500"
android:textAlignment="center"
android:textSize="14sp"/>
</LinearLayout>
<LinearLayout
android:id="#+id/add_photo_button"
android:paddingTop="10dp"
android:paddingBottom="10dp"
android:paddingStart="5dp"
android:paddingEnd="5dp"
android:layout_width="170dp"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:gravity="center|center_vertical"
android:background="#drawable/blue_pill_thick">
<TextView
android:id="#+id/add_photo_icon"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="18sp"
android:text="#string/photo"
android:layout_gravity="center_horizontal|center_vertical"
android:textColor="#color/blue500"
android:layout_marginEnd="5dp"/>
<TextView
android:id="#+id/add_photo_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Add from Gallery"
android:layout_gravity="center_horizontal|center_vertical"
android:textColor="#color/blue500"
android:textAlignment="center"
android:textSize="14sp"/>
</LinearLayout>
</LinearLayout>
</LinearLayout>
</RelativeLayout>
<RelativeLayout
android:id="#+id/list_view_layout"
android:visibility="gone"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingTop="150dp"
android:paddingBottom="50dp">
<ListView
android:id="#+id/list_view_container"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:stackFromBottom="true"
android:transcriptMode="alwaysScroll">
</ListView>
</RelativeLayout>
</LinearLayout>
<!--Navbar-->
<LinearLayout
android:id="#+id/photo_story_navbar"
android:layout_width="match_parent"
android:layout_height="56dp"
android:background="#drawable/navbar"
android:layout_alignParentBottom="true"
android:orientation="horizontal"
android:visibility="gone">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:gravity="right"
android:paddingStart="15dp"
android:orientation="horizontal"
android:layout_marginEnd="10dp">
<!-- Take Photo Button -->
<LinearLayout
android:id="#+id/nav_capture_button"
android:layout_width="84dp"
android:layout_height="32dp"
android:paddingStart="10dp"
android:orientation="horizontal"
android:background="#drawable/green_pill_button"
android:layout_gravity="center_vertical"
android:gravity="center|center_vertical"
android:paddingEnd="10dp"
android:clickable="true">
<TextView
android:id="#+id/nav_capture_icon"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="14sp"
android:text="#string/camera"
android:textColor="#color/green500"
android:layout_gravity="center_horizontal|center_vertical"
android:paddingEnd="5dp"/>
<TextView
android:id="#+id/nav_capture_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Capture"
android:layout_gravity="center_horizontal|center_vertical"
android:textColor="#color/green500"
android:textAlignment="center"
android:textSize="12sp"/>
</LinearLayout>
<!-- Add from Gallery Button -->
<LinearLayout
android:id="#+id/nav_gallery_button"
android:layout_width="84dp"
android:layout_height="32dp"
android:paddingStart="10dp"
android:layout_marginLeft="5dp"
android:orientation="horizontal"
android:background="#drawable/blue_pill"
android:layout_gravity="center_vertical"
android:gravity="center|center_vertical"
android:paddingEnd="10dp"
android:clickable="true">
<TextView
android:id="#+id/nav_gallery_icon"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="14sp"
android:text="#string/photo"
android:textColor="#color/blue500"
android:layout_gravity="center_horizontal|center_vertical"
android:paddingEnd="5dp"/>
<TextView
android:id="#+id/nav_gallery_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Gallery"
android:layout_gravity="center_horizontal|center_vertical"
android:textColor="#color/blue500"
android:textAlignment="center"
android:textSize="12sp"/>
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:gravity="right"
android:paddingEnd="15dp"
android:orientation="horizontal">
<!-- Review button -->
<LinearLayout
android:id="#+id/nav_review_button"
android:layout_width="84dp"
android:layout_height="32dp"
android:paddingStart="10dp"
android:orientation="horizontal"
android:background="#drawable/red_500_pill"
android:layout_gravity="right"
android:gravity="center|center_vertical"
android:paddingEnd="10dp"
android:clickable="true">
<TextView
android:id="#+id/nav_review_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Review"
android:layout_gravity="center_horizontal|center_vertical"
android:textColor="#color/red500"
android:textAlignment="center"
android:textSize="12sp"/>
<TextView
android:id="#+id/nav_review_icon"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="14sp"
android:text="#string/angle_double_right"
android:textColor="#color/red500"
android:layout_gravity="center_horizontal|center_vertical"
android:paddingStart="5dp"/>
</LinearLayout>
</LinearLayout>
</LinearLayout>
<RelativeLayout
android:id="#+id/save_cancel_bar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignBottom="#+id/linearLayout"
android:layout_alignParentStart="true"
android:background="#drawable/black_border_top"
android:visibility="gone">
<RelativeLayout
android:id="#+id/save_title_btn"
android:clickable="true"
android:layout_width="84dp"
android:layout_height="32dp"
android:layout_alignParentRight="true"
android:background="#drawable/blue_pill"
android:layout_marginRight="15dp"
android:layout_marginTop="10dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:layout_gravity="fill"
android:text="Save Title"
android:textSize="12sp"
android:textColor="#2196F3"/>
</RelativeLayout>
<RelativeLayout
android:id="#+id/cancel_title_btn"
android:layout_width="84dp"
android:layout_height="32dp"
android:clickable="true"
android:layout_alignParentRight="true"
android:background="#drawable/grey_700_pill"
android:layout_marginRight="105dp"
android:layout_marginTop="10dp"
android:layout_marginBottom="10dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:text="Cancel"
android:layout_gravity="fill"
android:textSize="12sp"
android:textColor="#616161" />
</RelativeLayout>
</RelativeLayout>
</RelativeLayout>

If you check the definition of onFocusChange(View v, boolean hasFocus) you will notice that your code must change like this:
pageTitle.setOnFocusChangeListener(new View.OnFocusChangeListener() {
#Override
public void onFocusChange(View view, boolean hasFocus) {
if(!hasFocus) {
pageTitle.setCursorVisible(true);
saveCancelBar.setVisibility(View.VISIBLE);
} else {
pageTitle.setCursorVisible(false);
saveCancelBar.setVisibility(View.GONE);
}
}
});
This is the code for checking the soft keyboard visibility in Android
public class MainActivity extends AppCompatActivity
{
public static String TAG = MainActivity.class.getSimpleName();
private TextView saveCancelBar;
private EditText pageTitle;
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
setListenerToRootView();
saveCancelBar = (TextView) findViewById(R.id.cancel_bar);
pageTitle = (EditText) findViewById(R.id.title);
pageTitle.setOnFocusChangeListener(new View.OnFocusChangeListener()
{
#Override
public void onFocusChange(View view, boolean hasFocus)
{
...
}
});
}
public void setListenerToRootView()
{
final View activityRootView = getWindow().getDecorView().findViewById(android.R.id.content);
activityRootView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener()
{
#Override
public void onGlobalLayout()
{
Rect r = new Rect();
activityRootView.getWindowVisibleDisplayFrame(r);
int screenHeight = activityRootView.getRootView().getHeight();
// r.bottom is the position above soft keypad or device button.
// if keypad is shown, the r.bottom is smaller than that before.
int keypadHeight = screenHeight - r.bottom;
Log.e(TAG, "keypadHeight = " + keypadHeight);
if (keypadHeight > screenHeight * 0.15) {
// 0.15 ratio is perhaps enough to determine keypad height.
Toast.makeText(getApplicationContext(), "Gotcha!!! softKeyboard open", Toast.LENGTH_SHORT).show();
} else {
// keyboard is closed
Toast.makeText(getApplicationContext(), "Gotcha!!! softKeyboard closed", Toast.LENGTH_SHORT).show();
saveCancelBar.setVisibility(View.GONE);
}
}
});
}
}

I think you forgot to add focusableInTouchMode. Add focusableInTouchMode to your editText to get focused on touching the view.
android:focusableInTouchMode="true"

how to set button below while creating textview programatically?

I have one button to create textview and edittext programmatically,everything works fine but the issue is when textview and edittext generated button is appear above the textview and edittext,i want to set button below of them,following is my code can any one tell what is the issue?
addnewdata.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
LayoutInflater li = LayoutInflater.from(MainActivity.this);
View promptsView = li.inflate(R.layout.prompts, null);
AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(
MainActivity.this);
alertDialogBuilder.setView(promptsView);
final EditText userInput = (EditText) promptsView
.findViewById(R.id.editTextDialogUserInput);
alertDialogBuilder
.setCancelable(false)
.setPositiveButton("OK",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
totalFields++;
lnr = (LinearLayout) findViewById(R.id.addnewlinear);
LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT);
lp.setMargins(25, 0, 0, 0);
valueTV = new TextView(MainActivity.this);
// valueTV.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT));
valueTV.setText(userInput.getText());
valueTV.setLayoutParams(lp);
valueTV.setTextSize(18);
valueTV.setTag("tv_" + totalFields);
valueTV.setId(totalFields);
valueTV.setTextColor(Color.parseColor("#2d6cae"));
LinearLayout.LayoutParams lp1 = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT,
LinearLayout.LayoutParams.WRAP_CONTENT);
lp1.setMargins(25, 0, 25, 0);
lp1.height = 50;
EditText edtvalues = new EditText(MainActivity.this);
edtvalues.setBackgroundResource(R.drawable.rect_edt);
edtvalues.setLayoutParams(lp1);
edtvalues.setTag("ed_" + totalFields);
lnr.addView(valueTV);
lnr.addView(edtvalues);
}
})
.setNegativeButton("Cancel",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
dialog.cancel();
}
});
AlertDialog alertDialog = alertDialogBuilder.create();
alertDialog.show();
}
});
xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#android:color/white"
>
<RelativeLayout
android:id="#+id/header"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:background="#000000"
android:gravity="center"
>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:text="IT ADD$"
android:id="#+id/itaddestxt"
android:textColor="#ffffff"
android:textStyle="bold"
android:textSize="20sp" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:text="UP"
android:textColor="#ffffff"
android:layout_toRightOf="#+id/itaddestxt"
android:textSize="20sp" />
</RelativeLayout>
<ScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/header"
>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="5dp"
android:id="#+id/addnewlinear"
android:orientation="vertical"
>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="ADD NEW EVENT"
android:layout_marginTop="10dp"
android:textSize="15dp"
android:id="#+id/txtaddnewevent"
android:textColor="#73b5fa"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_gravity="center_horizontal" />
<ImageView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/txtaddnewevent"
android:layout_marginTop="10dp"
android:id="#+id/bluelines"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Name of Event:*"
android:layout_below="#+id/bluelines"
android:layout_marginTop="20dp"
android:layout_marginLeft="15dp"
android:textSize="18dp"
android:textColor="#2d6cae"
android:id="#+id/txtnameofevent"
/>
<EditText
android:layout_width="match_parent"
android:layout_height="30dp"
android:id="#+id/edtnameofevent"
android:layout_below="#+id/txtnameofevent"
android:layout_marginLeft="15dp"
android:layout_marginTop="5dp"
android:layout_marginRight="15dp"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Date of Event:*"
android:layout_below="#+id/edtnameofevent"
android:layout_marginTop="5dp"
android:layout_marginLeft="15dp"
android:textSize="18dp"
android:textColor="#2d6cae"
android:id="#+id/txtdateofevent"
/>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/txtdateofevent"
android:layout_marginLeft="15dp"
android:layout_marginTop="5dp"
android:id="#+id/reledtdate"
>
<EditText
android:layout_width="250dp"
android:layout_height="30dp"
android:id="#+id/edtdateofevent"
/>
<ImageView
android:layout_width="20dp"
android:layout_height="20dp"
android:layout_toRightOf="#+id/edtdateofevent"
android:layout_marginLeft="10dp"
android:id="#+id/calndrdat"
/>
</RelativeLayout>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Time of Event:*"
android:layout_below="#+id/reledtdate"
android:layout_marginTop="5dp"
android:layout_marginLeft="15dp"
android:textSize="18dp"
android:textColor="#2d6cae"
android:id="#+id/txttimeofevent"
/>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/txttimeofevent"
android:layout_marginLeft="15dp"
android:layout_marginTop="5dp"
android:id="#+id/reledttime"
>
<EditText
android:layout_width="250dp"
android:layout_height="30dp"
android:id="#+id/edttimeofevent"
/>
<ImageView
android:layout_width="20dp"
android:layout_height="20dp"
android:layout_toRightOf="#+id/edttimeofevent"
android:layout_marginLeft="10dp"
android:id="#+id/timepickrs"
/>
</RelativeLayout>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Duration of Event:*"
android:layout_below="#+id/edttimeofevent"
android:layout_marginTop="5dp"
android:layout_marginLeft="15dp"
android:textSize="18dp"
android:textColor="#2d6cae"
android:id="#+id/txtdurationofevent"
/>
<EditText
android:layout_width="match_parent"
android:layout_height="30dp"
android:id="#+id/edtdurationofevent"
android:layout_below="#+id/txtdurationofevent"
android:layout_marginLeft="15dp"
android:layout_marginTop="5dp"
android:layout_marginRight="15dp"
/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/edtdurationofevent"
android:layout_marginLeft="15dp"
android:layout_marginTop="10dp"
android:paddingBottom="10dp"
android:id="#+id/addnewdata"
android:text="Add"
/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Submit"
android:textColor="#android:color/white"
android:layout_gravity="center"
android:id="#+id/btnsubmit"
/>
</LinearLayout>
</ScrollView>
</RelativeLayout>

Add a new layout (linear or relative) above the button.
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#android:color/white"
>
<RelativeLayout
android:id="#+id/header"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:background="#000000"
android:gravity="center"
>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:text="IT ADD$"
android:id="#+id/itaddestxt"
android:textColor="#ffffff"
android:textStyle="bold"
android:textSize="20sp" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:text="UP"
android:textColor="#ffffff"
android:layout_toRightOf="#+id/itaddestxt"
android:textSize="20sp" />
</RelativeLayout>
<ScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/header"
>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="5dp"
android:orientation="vertical"
>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="ADD NEW EVENT"
android:layout_marginTop="10dp"
android:textSize="15dp"
android:id="#+id/txtaddnewevent"
android:textColor="#73b5fa"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_gravity="center_horizontal" />
<ImageView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/txtaddnewevent"
android:layout_marginTop="10dp"
android:id="#+id/bluelines"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Name of Event:*"
android:layout_below="#+id/bluelines"
android:layout_marginTop="20dp"
android:layout_marginLeft="15dp"
android:textSize="18dp"
android:textColor="#2d6cae"
android:id="#+id/txtnameofevent"
/>
<EditText
android:layout_width="match_parent"
android:layout_height="30dp"
android:id="#+id/edtnameofevent"
android:layout_below="#+id/txtnameofevent"
android:layout_marginLeft="15dp"
android:layout_marginTop="5dp"
android:layout_marginRight="15dp"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Date of Event:*"
android:layout_below="#+id/edtnameofevent"
android:layout_marginTop="5dp"
android:layout_marginLeft="15dp"
android:textSize="18dp"
android:textColor="#2d6cae"
android:id="#+id/txtdateofevent"
/>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/txtdateofevent"
android:layout_marginLeft="15dp"
android:layout_marginTop="5dp"
android:id="#+id/reledtdate"
>
<EditText
android:layout_width="250dp"
android:layout_height="30dp"
android:id="#+id/edtdateofevent"
/>
<ImageView
android:layout_width="20dp"
android:layout_height="20dp"
android:layout_toRightOf="#+id/edtdateofevent"
android:layout_marginLeft="10dp"
android:id="#+id/calndrdat"
/>
</RelativeLayout>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Time of Event:*"
android:layout_below="#+id/reledtdate"
android:layout_marginTop="5dp"
android:layout_marginLeft="15dp"
android:textSize="18dp"
android:textColor="#2d6cae"
android:id="#+id/txttimeofevent"
/>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/txttimeofevent"
android:layout_marginLeft="15dp"
android:layout_marginTop="5dp"
android:id="#+id/reledttime"
>
<EditText
android:layout_width="250dp"
android:layout_height="30dp"
android:id="#+id/edttimeofevent"
/>
<ImageView
android:layout_width="20dp"
android:layout_height="20dp"
android:layout_toRightOf="#+id/edttimeofevent"
android:layout_marginLeft="10dp"
android:id="#+id/timepickrs"
/>
</RelativeLayout>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Duration of Event:*"
android:layout_below="#+id/edttimeofevent"
android:layout_marginTop="5dp"
android:layout_marginLeft="15dp"
android:textSize="18dp"
android:textColor="#2d6cae"
android:id="#+id/txtdurationofevent"
/>
<EditText
android:layout_width="match_parent"
android:layout_height="30dp"
android:id="#+id/edtdurationofevent"
android:layout_below="#+id/txtdurationofevent"
android:layout_marginLeft="15dp"
android:layout_marginTop="5dp"
android:layout_marginRight="15dp"
/>
<!--Empty layout-->
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:id="#+id/addnewlinear"
android:orientation="vertical"
/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/edtdurationofevent"
android:layout_marginLeft="15dp"
android:layout_marginTop="10dp"
android:paddingBottom="10dp"
android:id="#+id/addnewdata"
android:text="Add"
/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Submit"
android:textColor="#android:color/white"
android:layout_gravity="center"
android:id="#+id/btnsubmit"
/>
</LinearLayout>
</ScrollView>

Cannot add childs to linearLayout

In my app what i want is to dynamically add buttons to a linear layout based on the length of the array.For example if the length of array is 4 then ,4 buttons should be added to the linear layout.I tried doing that but always my app crashes
The linearlayout which is at the bottom of the xml is where i wanna add the buttons
XMl
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/bg">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/hsjobslogo"
android:layout_gravity="center"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true" />
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/mrd_home"
android:layout_marginRight="10dp"
android:src="#drawable/home168"
android:layout_centerVertical="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true" />
</RelativeLayout>
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="40dp"
android:background="#drawable/header"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:id="#+id/linearLayout2">
<TextView
android:layout_width="0dp"
android:layout_height="33dp"
android:layout_weight="2"
android:layout_marginTop="04dp"
android:text="Resource"
android:gravity="center|start"
android:textColor="#fff"
android:textStyle="bold"
android:layout_marginLeft="10dp"
android:textSize="18sp" />
<ImageView
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="0.5"
android:padding="10dp"
android:visibility="gone"
android:layout_marginTop="-5dp"
android:src="#drawable/edit" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="0.35"
android:visibility="visible"
android:id="#+id/ll_main_pi"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:orientation="horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Name"
android:textStyle="bold"
style="#style/Job_on_Call"
android:textColor="#000"
android:id="#+id/tv_mrd_pi_name" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=" [ "
style="#style/Job_on_Call"
android:singleLine="false" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Gender"
style="#style/Job_on_Call"
android:textColor="#000"
android:id="#+id/tv_mrd_gender" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=","
style="#style/Job_on_Call"
android:singleLine="false" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Age"
style="#style/Job_on_Call"
android:textColor="#000"
android:id="#+id/tv_mrd_age" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=" ]"
style="#style/Job_on_Call"
android:singleLine="false" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:orientation="horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Profession"
style="#style/Job_on_Call"
android:textColor="#000"
android:id="#+id/tv_mrd_profession" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=" [ "
style="#style/Job_on_Call"
android:singleLine="false" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Yrs"
style="#style/Job_on_Call"
android:textColor="#000"
android:id="#+id/tv_mrd_exp_yrs" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="."
style="#style/Job_on_Call"
android:singleLine="false" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Months"
style="#style/Job_on_Call"
android:textColor="#000"
android:id="#+id/tv_mrd_exp_months" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=" ]"
style="#style/Job_on_Call"
android:singleLine="false" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:orientation="horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=""
style="#style/Job_on_Call"
android:singleLine="false"
android:layout_marginBottom="2dp"
android:id="#+id/tv_mrd_area" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=""
style="#style/Job_on_Call"
android:singleLine="false"
android:layout_marginBottom="2dp"
android:id="#+id/tv_mrd_city" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=""
style="#style/Job_on_Call"
android:singleLine="false"
android:layout_marginBottom="2dp"
android:id="#+id/tv_mrd_state" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=""
style="#style/Job_on_Call"
android:singleLine="true"
android:id="#+id/tv_mrd_country" />
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
>
<ImageView
android:layout_width="0dp"
android:layout_height="1dp"
android:gravity="bottom"
android:layout_gravity="bottom"
android:background="#drawable/divider_light"
android:layout_weight="0.2" />
<LinearLayout
android:layout_width="0dp"
android:layout_weight="1.6"
android:layout_height="wrap_content"
android:background="#drawable/rectangle">
<TextView
android:layout_width="0dp"
android:layout_weight="2"
android:layout_height="wrap_content"
android:text="Personal Info"
android:textStyle="bold"
android:textSize="18sp"
android:id="#+id/tv_mrd_header"
style="#style/Job_on_Call"
android:textColor="#fff"
android:layout_marginTop="05dp"
android:layout_marginLeft="19dp" />
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/plus_one"
android:visibility="gone"
android:layout_marginLeft="10dp"
android:layout_marginRight="5dp"
android:id="#+id/iv_mrd_add" />
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/edit_one"
android:visibility="visible"
android:layout_marginRight="5dp"
android:layout_marginLeft="10dp"
android:id="#+id/iv_mrd_edit" />
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1.5"
android:orientation="horizontal">
<ImageView
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="0.2"
android:padding="5dp"
android:id="#+id/iv_mrd_go_left"
android:src="#drawable/left_arrow" />
<ViewFlipper
android:layout_width="0dp"
android:layout_weight="2"
android:layout_height="match_parent"
android:visibility="visible"
android:id="#+id/mrd_view_flipper"
android:layout_gravity="center_horizontal">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:layout_marginTop="2dp"
android:id="#+id/ll_my_resource_personal_details">
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:orientation="vertical"
android:layout_weight="2">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Nationality"
android:textStyle="bold"
android:id="#+id/tv_mrd_nationality_header"
android:layout_marginTop="02dp"
style="#style/Job_on_Call"
android:textColor="#000" />
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:layout_marginTop="2dp"
android:id="#+id/ll_my_resource_refference_details">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Name"
android:textStyle="bold"
android:id="#+id/tv_mrd_ref_name_header"
android:layout_marginTop="02dp"
style="#style/Job_on_Call"
android:textColor="#000" />
</LinearLayout>
<RelativeLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginLeft="10dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Document Type"
android:textStyle="bold"
android:id="#+id/dumm1"
android:layout_marginTop="05dp"
style="#style/Job_on_Call"
android:textColor="#000" />
</RelativeLayout>
<RelativeLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="20dp">
<ImageView
android:layout_width="200dp"
android:layout_height="200dp"
android:id="#+id/mrd_profile_pic"
android:layout_margin="10dp"
android:layout_centerVertical="true"
android:layout_centerHorizontal="true" />
</RelativeLayout>
</ViewFlipper>
<ImageView
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="0.2"
android:padding="5dp"
android:id="#+id/iv_mrd_go_right"
android:src="#drawable/right_arrow" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="0.2"
android:layout_gravity="center"
android:gravity="center"
android:id="#+id/add_doc_circles"
android:orientation="horizontal">
The layout where i want to create buttons dynamically
</LinearLayout>
</LinearLayout>
Code
if (NewDataSet.get("Table2") instanceof JSONArray) {
isDocPresent = true;
JSONArray array = NewDataSet.getJSONArray("Table2");
numOfDocCircles = array.length();
LayoutInflater layoutInflater;
Button button = new Button(context);
for (int k = 0; k < array.length(); k++) {
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(30, 30);
button.setLayoutParams(params);
button.setText("" + k);
llAddDocCircles.addView(button);
}
Error
java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.
Please help me out whats the problem?

Move your button creation into the for loop, in your code you are basically just adding the same Button instance to the parent layout several times:
for (int k = 0; k < array.length(); k++) {
Button button = new Button(context);
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(convertDpToPixel(30), convertDpToPixel(30));
button.setLayoutParams(params);
button.setText("" + k);
llAddDocCircles.addView(button);
}
Use below method to convert dp to pixel.
public static float convertDpToPixel(float dp){
Resources resources = context.getResources();
DisplayMetrics metrics = resources.getDisplayMetrics();
float px = dp * (metrics.densityDpi / 160f);
return px;
}

In your for loop call this method as:
for (int k = 0; k < array.length(); k++) {
llAddDocCircles.addView(addMoreButton("" + k));
}
And your addMoreButton() method is:
public Button addMoreButton(String text) {
Button button = new Button(context);
button.setId(buttonID);
LinearLayout.LayoutParams buttonLayoutParams = new LinearLayout.LayoutParams(
LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
button LayoutParams.setMargins(10, 10, 10, 10); //Add this if you want margin of 10dp
button.setLayoutParams(buttonLayoutParams );
buttonArrayList.add(button);
buttonID++;
return button;
}
And you can easily access these button value by:
private static int buttonID = 0;
private ArrayList<Button> buttonArrayList= new ArrayList<Button>();
// loop to handle each button
for (int i = 0; i < buttonArrayList.size(); i++) {
Button button = buttonArrayList.get(i);
// do your stuff with each button
button.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
}
});
}