customAdapter for object isnt working

customAdapter for object isnt working - android

I have a model class. Now from my activity i want to set the values in model class & show them in gridview using my custom adapter. After that i need to store the object in a variable(class type) from gridview's onItemClick. I have done the below codes. But its not working. Where did i go wrong?
activity_country.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context=".CountryActivity" >
<TextView
android:id="#+id/nTextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginLeft="21dp"
android:layout_marginTop="26dp"
android:text="Name" />
<TextView
android:id="#+id/aTextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/nTextView"
android:layout_below="#+id/nTextView"
android:layout_marginTop="24dp"
android:text="About" />
<EditText
android:id="#+id/CountryNameEditText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="#+id/nTextView"
android:layout_alignBottom="#+id/nTextView"
android:layout_marginLeft="48dp"
android:layout_toRightOf="#+id/nTextView"
android:ems="10" >
<requestFocus />
</EditText>
<EditText
android:id="#+id/CountryAboutEditText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/CountryNameEditText"
android:layout_alignTop="#+id/aTextView"
android:ems="10" />
<Button
android:id="#+id/saveCountryButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/CountryAboutEditText"
android:layout_below="#+id/CountryAboutEditText"
android:layout_marginLeft="16dp"
android:layout_marginTop="22dp"
android:text="Save"
android:onClick="saveCountry"
/>
<GridView
android:id="#+id/countryGridView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/saveCountryButton"
android:layout_centerHorizontal="true"
android:numColumns="2">
</GridView>
</RelativeLayout>
CountryActivity.java
public class CountryActivity extends Activity
{
ArrayList<Country> countries = new ArrayList<Country>();
Country aCountry;
EditText CountryNameTxtBox;
EditText CountryAboutTxtBox;
GridView countrygGridView;
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_country);
// Show the Up button in the action bar.
setupActionBar();
CountryNameTxtBox = (EditText)findViewById(R.id.CountryNameEditText);
CountryAboutTxtBox = (EditText)findViewById(R.id.CountryAboutEditText);
countrygGridView = (GridView)findViewById(R.id.countryGridView);
}
public void saveCountry(View view)
{
String txtName = CountryNameTxtBox.getText().toString();
String txtAbout = CountryAboutTxtBox.getText().toString();
showGrid();
}
public void showGrid()
{
/*
ArrayAdapter<Country> adapter = new ArrayAdapter<Country>(this,android.R.layout.simple_list_item_1, countries);
countrygGridView.setAdapter(adapter);
*/
countrygGridView.setAdapter(new myAdapter(this,countries));
countrygGridView.setOnItemClickListener(new OnItemClickListener()
{
#Override
public void onItemClick(AdapterView<?> parent, View v,int position, long id)
{
for(Country mCountry: countries)
{
if(countries.contains(aCountry))
{
Toast.makeText(CountryActivity.this,countries.get(position).getName(), 2000).show();
}
}
}
});
}
countrygrid.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal" >
<TextView
android:id="#+id/label1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#+id/label"
android:layout_marginTop="15sp"
android:textSize="15sp" >
</TextView>
<TextView
android:id="#+id/label2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#+id/label"
android:layout_marginTop="15sp"
android:textSize="15sp" >
</TextView>
</LinearLayout>
myAdapter.java
public class myAdapter extends BaseAdapter
{
Context mycontext;
ArrayList<Country> countries;
public myAdapter(Context c, ArrayList<Country> obj)
{
this.mycontext=c;
this.countries = obj;
}
public int getCount() {
// TODO Auto-generated method stub
return countries.size();
}
public Object getItem(int arg0) {
// TODO Auto-generated method stub
return countries.get(arg0);
}
public long getItemId(int arg0) {
// TODO Auto-generated method stub
return 0;
}
public View getView(int position, View convertview, ViewGroup parent)
{
LayoutInflater inflater = (LayoutInflater) mycontext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View gridView;
if(convertview==null)
{
gridView =new View(mycontext);
gridView =inflater.inflate(R.layout.countrygrid, null);
TextView txtvw1 = (TextView) gridView.findViewById(R.id.label1);
txtvw1.setText(countries.get(position).getName());
TextView txtvw2 = (TextView) gridView.findViewById(R.id.label2);
txtvw2.setText(countries.get(position).getAbout());
}
else
{
gridView = (View) convertview;
}
return gridView;
}
}
*Its showing error in countryActivity.java- when i am trying to set the adapter inside showGrid() *
countrygGridView.setAdapter(new myAdapter(this,countries));

public class myAdapter
{
does not extend anything
It should be
public class myAdapter extends BaseAdapter //orArrayAdapter
{
If you still have a problem post the stacktrace for further help

Related

SetOnItemClickListener not responding in custom ListView of android

I am new to android,I am currently making a listview with custom list items,I want to do an action on Listview's item click event,I have searched so many similar threads with no luck,Can anyone help me to fix this.my code is as below,
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#fff">
<TextView
android:id="#+id/tv_hdr"
android:layout_width="fill_parent"
android:layout_height="80dp"
android:layout_alignParentTop="true"
android:background="#color/orange"
android:gravity="center"
android:text="SELECT YOUR CITY"
android:textColor="#color/white"
android:textSize="22dp" />
<EditText
android:id="#+id/et_search"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/tv_hdr"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:layout_marginTop="5dp"
android:background="#drawable/et_selector"
android:drawableLeft="#drawable/search"
android:hint="City Or Postal Code"
android:padding="10dp"
android:textSize="16dp" />
<TextView
android:id="#+id/tv_loc"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/et_search"
android:background="#color/grey_light"
android:drawableLeft="#drawable/ic_loc"
android:gravity="center_vertical"
android:padding="10dp"
android:paddingLeft="5dp"
android:text=" My Location"
android:textColor="#color/black"
android:textSize="16dp"
android:textStyle="bold" />
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/scr_location"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_below="#+id/tv_loc"
android:fillViewport="true">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="#+id/tv_populcar_city"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#color/white"
android:gravity="center_vertical"
android:padding="10dp"
android:paddingLeft="5dp"
android:text=" Popular Cities"
android:textColor="#color/orange"
android:textSize="16dp"
android:textStyle="bold" />
<ListView
android:id="#+id/lv_city"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/tv_populcar_city" />
<TextView
android:id="#+id/tv_states"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/lv_city"
android:background="#color/white"
android:gravity="center_vertical"
android:padding="10dp"
android:paddingLeft="5dp"
android:text="States"
android:textColor="#color/orange"
android:textSize="16dp"
android:textStyle="bold" />
<ListView
android:id="#+id/lv_state"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/tv_states" />
</RelativeLayout>
</ScrollView>
</RelativeLayout>
adapter
public class CityAdapter extends BaseAdapter {
private Context mContext;
private final ArrayList<City> city;
Integer selected_position = -1;
public CityAdapter(Context c, ArrayList<City> city) {
mContext = c;
this.city = city;
}
#Override
public int getCount() {
// TODO Auto-generated method stub
return city.size();
}
#Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return null;
}
#Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return 0;
}
public View getView(int position, View convertView, ViewGroup parent) {
View v;
if (convertView == null) { // if it's not recycled, initialize some attributes
LayoutInflater inflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
v = inflater.inflate(R.layout.raw_city, parent, false);
} else {
v = (View) convertView;
}
TextView tv_city = (TextView) v.findViewById(R.id.tv_city);
tv_city.setText(city.get(position).getCity());
return v;
}
}
activity
lv_city.setOnItemClickListener( new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Pref.setValue( SelectCity.this, Const.PREF_CITY_ID, cityList.get( position ).getCity_id() );
finish();//finishing activity
}
} );

You are wrong class in listview item click
lv_city.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
Pref.setValue( SelectCity.this, Const.PREF_CITY_ID,
cityList.get( position ).getCity_id() );
finish();//finishing activity
}
});

#quick learner's was correct, But i put some idea for your ref..
If you use custom adapter class, In my suggestion use setOnClickListener in custom adapter class this is better way to do this type of case!!
For example,
mViewHolder.MyUI.setOnClickListener

GridView onClickListener/onItemClickListener not working

I am trying to implement a Card view inside grid view. The grid view is showing perfectly; even when I touch on a grid view item it's showing nothing. But when I click on the text which is display below its work. I referred This but not working...
Thanks.
My code is as below,
// Contact_Backup.java
public class Contact_Backup extends AppCompatActivity {
#Bind(R.id.gridview)
GridView gridview;
String[] contact_screen_array;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.contact_backup);
ButterKnife.bind(this);
contact_screen_array = getResources().getStringArray(R.array.TextScreen);
String[] contact_icon_array = getResources().getStringArray(R.array.IconScreen);
String concat = "\nContacts";
gridview.setAdapter(new Custom_Adapter(getApplicationContext(),contact_icon_array,contact_screen_array,concat));
}
}
//Custom_Adapter
public class Custom_Adapter extends BaseAdapter {
Context contaxt;
String[] Array_text;
String[] Array_icon;
String concat;
LayoutInflater inflater;
public Custom_Adapter(Context context,String[] Array_icon, String[] Array_text, String concat)
{
this.contaxt = context;
this.Array_text = Array_text;
this.Array_icon = Array_icon;
this.concat=concat;
inflater = (LayoutInflater)context.
getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
#Override
public int getCount() {
return Array_text.length;
}
#Override
public Object getItem(int position) {
return position;
}
#Override
public long getItemId(int position) {
return position;
}
#Bind(R.id.Screen_icon)
Button Screen_icon;
#Bind(R.id.Screen_text)
TextView Screen_text;
#Override
public View getView(final int position, View convertView, ViewGroup parent) {
View grid;
LayoutInflater inflater = (LayoutInflater) contaxt
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
if (convertView == null) {
grid = new View(contaxt);
grid = inflater.inflate(R.layout.new_app_card_layout, null);
ButterKnife.bind(this, grid);
Screen_text.setText(Array_text[position]+concat);
Screen_icon.setText(Array_icon[position]);
Typeface font = Typeface.createFromAsset(contaxt.getAssets(), "fonts/fontawesome-webfont.ttf" );
Screen_icon.setTypeface(font);
} else {
grid = (View) convertView;
}
grid.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Log.d("TAG::",""+position);
}
});
return grid;
}
}
// contact_backup.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#drawable/main_backgorund"
>
<RelativeLayout
android:background="#color/transparent"
android:padding="5.0dip"
android:id="#+id/top_bar_screen"
android:layout_weight="0.2"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<TextView
android:textColor="#color/newclr"
android:id="#+id/tvContacts"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/contacts"
android:shadowColor="#000000"
android:shadowDx="1.0"
android:shadowDy="1.0"
android:shadowRadius="2.0"
android:layout_centerVertical="true" />
<TextView
android:textColor="#color/newclr"
android:id="#+id/tvLastBackup"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/last_backup"
android:shadowColor="#000000"
android:shadowDx="1.0"
android:shadowDy="1.0"
android:shadowRadius="2.0"
android:layout_alignParentRight="true"
android:layout_centerVertical="true" />
</RelativeLayout>
<View
android:layout_width="fill_parent"
android:layout_height="1dp"
android:id="#+id/v1"
android:layout_below="#+id/top_bar_screen"
android:background="#color/newclr"/>
<GridLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/swipe"
android:layout_below="#+id/v1"
android:paddingTop="20sp"
android:paddingLeft="10sp"
android:paddingRight="10sp"
android:layout_weight="0.6"
>
<GridView
android:id="#+id/gridview"
android:layout_width="fill_parent"
android:columnWidth="90dp"
android:numColumns="auto_fit"
android:verticalSpacing="10dp"
android:horizontalSpacing="10dp"
android:layout_height="wrap_content" />
</GridLayout>
<!-- com.startapp.android.publish.banner.Banner
android:id="#+id/startAppBanner1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_weight="0.2"
android:layout_centerHorizontal="true" /-->
</RelativeLayout>
// new_app_card_layout.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.CardView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:id="#+id/fssr_card"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
card_view:cardBackgroundColor="#color/transparent"
>
<LinearLayout
android:gravity="center"
android:orientation="vertical"
android:id="#+id/Contacts_Button_Layout"
android:background="#drawable/linearlayout_normal"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_marginLeft="-1.0dip"
android:layout_weight="1.0"
>
<Button
android:textSize="35.0sp"
android:textColor="#color/newclr"
android:layout_gravity="center"
android:id="#+id/Screen_icon"
android:background="#null"
android:padding="20sp"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="#string/fa_icon_contact"
android:drawablePadding="5.0dip"
android:textAllCaps="false" />
<TextView
android:textSize="15.0sp"
android:textColor="#color/white"
android:layout_gravity="center"
android:textAlignment="center"
android:id="#+id/Screen_text"
android:background="#color/newclr"
android:padding="5sp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="#string/contactsbackup"
android:textAllCaps="false"/>
</LinearLayout>
</android.support.v7.widget.CardView>

use this method for clicking on a gridview item:
gridview.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
// your action when gridView item is clicked
}
});

Set the listener on the actual gridview object.
gridView.setOnItemClickListener(new OnItemClickListener()...);

Try this,
public class Contact_Backup extends AppCompatActivity {
#Bind(R.id.gridview)
GridView gridview;
String[] contact_screen_array;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.contact_backup);
ButterKnife.bind(this);
contact_screen_array = getResources().getStringArray(R.array.TextScreen);
String[] contact_icon_array = getResources().getStringArray(R.array.IconScreen);
String concat = "\nContacts";
gridview.setAdapter(new Custom_Adapter(getApplicationContext(),contact_icon_array,contact_screen_array,concat));
gridview.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
for(int i=0;i<contact_screen_array.length;i++) {
Log.d("TAG::", "Position"+contact_screen_array[i]);
}
}
});
}
}

Finally, I succeed. here is the code.
Just use Textview instead of Button in // new_app_card_layout.xml.
Just Update it,
<TextView
android:textSize="35.0sp"
android:textColor="#color/newclr"
android:layout_gravity="center"
android:id="#+id/Screen_icon"
android:background="#null"
android:padding="20sp"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="#string/fa_icon_contact"
android:drawablePadding="5.0dip"
android:textAllCaps="false"
android:textAlignment="center" />
Thank You so much, All of you for help... :)

Try this i have updated your custom Adapter class.please check again with this updated code.
public class Custom_Adapter extends BaseAdapter {
Context contaxt;
String[] Array_text;
String[] Array_icon;
String concat;
LayoutInflater inflater;
public Custom_Adapter(Context context,String[] Array_icon, String[] Array_text, String concat)
{
this.contaxt = context;
this.Array_text = Array_text;
this.Array_icon = Array_icon;
this.concat=concat;
inflater = (LayoutInflater)context.
getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
#Override
public int getCount() {
return Array_text.length;
}
#Override
public Object getItem(int position) {
return position;
}
#Override
public long getItemId(int position) {
return position;
}
#Bind(R.id.Screen_icon)
Button Screen_icon;
#Bind(R.id.Screen_text)
TextView Screen_text;
#Override
public View getView(final int position, View convertView, ViewGroup parent) {
View grid;
LayoutInflater inflater = (LayoutInflater) contaxt
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
if (convertView == null) {
grid = new View(contaxt);
grid = inflater.inflate(R.layout.new_app_card_layout, null);
ButterKnife.bind(this, grid);
Screen_text.setText(Array_text[position]+concat);
Screen_icon.setText(Array_icon[position]);
Typeface font = Typeface.createFromAsset(contaxt.getAssets(), "fonts/fontawesome-webfont.ttf" );
Screen_icon.setTypeface(font);
grid.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Log.d("TAG::",""+position);
}
});
} else {
grid = (View) convertView;
grid.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Log.d("TAG::",""+position);
}
});
}
return grid;
}
}
Hope this helps you out !

Custom ListView in Android

I want to create a custom list view in app...
but I don't understand why my code have problem to run it
when I run my app ...Shows Message as "app is stopped" ..
I'm confused..
Help me to solve this
thank you
java code:
public class MainActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ListView list=(ListView) findViewById(R.id.listView1);
Myadapter adapter=new Myadapter(getApplicationContext());
list.setAdapter(adapter);
}
public class Myadapter extends BaseAdapter
{
LayoutInflater myInflater;
public Myadapter(Context context) {
myInflater=LayoutInflater.from(context);
// TODO Auto-generated constructor stub
}
#Override
public int getCount() {
// TODO Auto-generated method stub
return (4);
}
#Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return position;
}
#Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder Holder;
if(convertView==null)
{
Holder=new ViewHolder();
convertView=myInflater.inflate(R.layout.item_layout, null);
Holder.star=(ImageButton) convertView.findViewById(R.id.imageButton_star);
Holder.vorod=(Button) convertView.findViewById(R.id.button_voro);
Holder.url=(TextView) convertView.findViewById(R.id.text_addres);
Holder.vorod=(Button)convertView.findViewById(R.id.imageButton_star);
Holder.rank=(ImageButton) convertView.findViewById(R.id.imageButton_rank);
Holder.speed=(ImageButton) convertView.findViewById(R.id.imageView_speed);
Holder.delete=(ImageButton) convertView.findViewById(R.id.imageButton_delete);
convertView.setTag(Holder);
}
else
Holder=(ViewHolder) convertView.getTag();
// TODO Auto-generated method stub
return convertView;
}
}
public class ViewHolder
{
ImageButton star;
Button vorod;
TextView url;
ImageButton rank;
ImageButton speed;
ImageButton detail;
ImageButton delete;
}
}
Xml code:(Item list view)
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="30dp"
android:background="#drawable/image001"
android:orientation="vertical" >
<ImageButton
android:id="#+id/imageButton_star"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_marginTop="30dp"
android:background="#drawable/round"
android:src="#drawable/star1"
/>
<Button
android:id="#+id/button_voro"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_above="#+id/text_addres"
android:background="#drawable/corner_round"
android:text="button" />
<TextView
android:id="#+id/text_addres"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="9dp"
android:layout_margin="30dp"
android:layout_centerInParent="true"
android:text="Large Text"
android:textAppearance="?android:attr/textAppearanceLarge" />
<LinearLayout
android:id="#+id/linearLayout1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginBottom="30dp"
android:background="#drawable/olgo"
android:orientation="horizontal" >
<ImageButton
android:id="#+id/imageView_speed"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/round"
android:layout_margin="5dp"
android:layout_weight="1"
android:src="#drawable/speed" />
<ImageButton
android:id="#+id/imageButton_dataile"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/round"
android:layout_margin="5dp"
android:layout_weight="1"
android:src="#drawable/dataile" />
<ImageButton
android:id="#+id/imageButton_rank"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/round"
android:layout_margin="5dp"
android:layout_weight="1"
android:src="#drawable/ranke" />
<ImageButton
android:id="#+id/imageButton_delete"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/round"
android:layout_margin="5dp"
android:layout_weight="1"
android:src="#drawable/delete" />
</LinearLayout>
and main Xml: There is a listView

you have this in code:
Holder.star=(ImageButton) convertView.findViewById(R.id.imageButton_star);
but you have not a Button with id imageButton_star in your xml file.
You are inilizating Holder.vorod twice
Remove
Holder.vorod=(Button)convertView.findViewById(R.id.imageButton_star);

ListView not inflating

Good day to all.
I am currently working on a customized ListView which is not inflating (is not becoming visible) inside the activity.
Below are the xml and ListView adapter classes.
main.xml
<LinearLayout
android:id="#+id/llListView"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:paddingLeft="5dp"
android:paddingRight="5dp"
android:paddingTop="2dp"
android:paddingBottom="2dp"
android:layout_below="#+id/rlFirstRow">
<ListView
android:id="#+id/lvErrorsReport"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#drawable/border"/>
</LinearLayout>
listview_row.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:id="#+id/llError"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_alignParentTop="true">
<TextView
android:id="#+id/txtErrorInfo"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=""
android:textStyle="bold"
android:textSize="20dp"/>
</LinearLayout>
<LinearLayout
android:id="#+id/llStatus"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_below="#+id/llError">
<TextView
android:id="#+id/txtStatus"
android:layout_width="100dp"
android:layout_height="wrap_content"
android:text="Status: "/>
<TextView
android:id="#+id/txtStatusInfo"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=""
android:textStyle="italic"/>
</LinearLayout>
<LinearLayout
android:id="#+id/llMaterials"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_below="#+id/llStatus">
<TextView
android:id="#+id/txtMaterials"
android:layout_width="100dp"
android:layout_height="wrap_content"
android:text="Materials: "/>
<TextView
android:id="#+id/txtMaterialsInfo"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=""
android:textStyle="italic"/>
</LinearLayout>
<LinearLayout
android:id="#+id/llButton"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_below="#+id/llMaterials">
<Button
android:id="#+id/btnShowMaterials"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Show Materials"
android:visibility="gone"/>
</LinearLayout>
</RelativeLayout>
BaseAdapter class
public class RepairReportListViewAdapter extends BaseAdapter
{
ArrayList<String> errors;
ArrayList<String> statuses;
ArrayList<Boolean> materials;
Context mContext;
LayoutInflater inflater;
public RepairReportListViewAdapter(Context context, ArrayList<String> err, ArrayList<String> stat, ArrayList<Boolean> mat)
{
this.mContext = context;
this.errors = err;
this.statuses = stat;
this.materials = mat;
inflater = (LayoutInflater)mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
#Override
public int getCount()
{
return 0;
}
#Override
public Object getItem(int position)
{
return null;
}
#Override
public long getItemId(int position)
{
return 0;
}
#Override
public View getView(int position, View convertView, ViewGroup parent)
{
ViewHolder holder;
if(convertView == null)
{
holder = new ViewHolder();
convertView = inflater.inflate(R.layout.repairreport_listview, null);
holder.error = (TextView)convertView.findViewById(R.id.txtErrorInfo);
holder.status = (TextView)convertView.findViewById(R.id.txtStatusInfo);
holder.material = (TextView)convertView.findViewById(R.id.txtMaterialsInfo);
holder.showMaterials = (Button)convertView.findViewById(R.id.btnShowMaterials);
convertView.setTag(holder);
}
else
{
holder = (ViewHolder)convertView.getTag();
}
holder.error.setText(this.errors.get(position).toString());
holder.status.setText(this.statuses.get(position).toString());
if(this.materials.get(position) == true)
{
holder.material.setText("Materials where used to fix this error. Click on the button below to view the materials.");
holder.showMaterials.setVisibility(Button.VISIBLE);
holder.showMaterials.setOnClickListener(new View.OnClickListener()
{
#Override
public void onClick(View v)
{
//LATER
}
});
}
else
{
holder.material.setText("No materials where used to fix this error.");
}
return convertView;
}
static class ViewHolder
{
TextView error;
TextView status;
TextView material;
Button showMaterials;
}
}
I've already tried changing the layouts as suggested here but the ListView is still not revealed.
Any ideas why it is not showing? Sorry for the code dump but I really cannot figure out what the heck is going on.
P.S. I did set the adapter to the ListView in the main activity.
adapter = new RepairReportListViewAdapter(this, errorNames, statuses, materialsInUse);
lvErrors.setAdapter(adapter);

your ListView does not inflate nothing because getCount is returning 0
change
#Override
public int getCount()
{
return 0;
}
with
#Override
public int getCount()
{
return (stat == null) ? 0 : stat.size();
}
Also, instead of keeping three differents ArrayList, you can create a class that holds all the info you need and an ArrayList of this class

GridView doesn't display content in android

i am trying to display image using GridView. This is the first time i using GridView, so i using the example from here and implement it to mine (i have tried the example that contained there, and it's works).
But, i have checked it many time, there's no error comes from LogCat, no Force Closed, the image didn't show. i have no idea where's the wrong part.
Here's my code:
choosepic.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:background="#drawable/bg_inner">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/book_inner"
android:layout_marginTop="50dp"
/>
<ImageButton
android:id="#+id/homeBtn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/home_btn"
android:background="#null"
/>
<ImageView
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:src="#drawable/bg_arrow_btn"
android:layout_alignParentRight="true"
/>
<ImageButton
android:id="#+id/nextBtn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/right_arrow"
android:background="#null"
android:layout_alignParentRight="true"
android:layout_marginTop="5dp"
android:layout_marginRight="7dp"
android:layout_marginLeft="7dp"
/>
<ImageButton
android:id="#+id/prevBtn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/left_arrow"
android:background="#null"
android:layout_toLeftOf="#+id/nextBtn"
android:layout_marginTop="5dp"
/>
<GridView
android:id="#+id/gridView1"
android:numColumns="3"
android:gravity="center"
android:columnWidth="30dp"
android:stretchMode="columnWidth"
android:layout_width="300dp"
android:layout_height="200dp"
android:layout_marginLeft="60dp"
android:layout_marginTop="70dp"
>
</GridView>
</RelativeLayout>
animalbutton.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<ImageView
android:id="#+id/grid_item_image"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/ic_launcher"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true">
</ImageView>
<TextView
android:text="TextView"
android:layout_height="wrap_content"
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_centerHorizontal="true"
android:textSize="18sp"
android:visibility="gone">
</TextView>
ImageAdapter.java
public class ImageAdapter extends BaseAdapter{
private Activity activity;
private ArrayList<String> listNm;
private ArrayList<Integer> listAnim;
public ImageAdapter(Activity activity,ArrayList<String> listName, ArrayList<Integer> listImage) {
super();
this.listNm = listName;
this.listAnim = listImage;
this.activity = activity;
}
public static class ViewHolder
{
public ImageView imgViewAnim;
public TextView txtViewAnim;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder view;
LayoutInflater inflator = activity.getLayoutInflater();
if(convertView==null)
{
view = new ViewHolder();
convertView = inflator.inflate(R.layout.animalbutton, null);
view.txtViewAnim = (TextView) convertView.findViewById(R.id.textView1);
view.imgViewAnim = (ImageView) convertView.findViewById(R.id.grid_item_image);
convertView.setTag(view);
}
else
{
view = (ViewHolder) convertView.getTag();
}
view.txtViewAnim.setText(listNm.get(position));
view.imgViewAnim.setImageResource(listAnim.get(position));
return convertView;
}
#Override
public int getCount() {
// TODO Auto-generated method stub
return 0;
}
#Override
public String getItem(int position) {
// TODO Auto-generated method stub
return listNm.get(position);
}
#Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return 0;
}
}
choosepic.java
public class choosepic extends Activity {
/** Called when the activity is first created. */
ImageAdapter mAdapter;
GridView gridView;
static final String[] animal = new String[] {
"cat", "cow","croc", "duck", "elephant", "giraffe", "lion", "moose", "mouse"};
private ArrayList<String> listNm;
private ArrayList<Integer> listAnim;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.choosepic);
gridView = (GridView) findViewById(R.id.gridView1);
prepare_list1();
mAdapter = new ImageAdapter(this,listNm, listAnim);
gridView.setAdapter(mAdapter);
gridView.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> arg0, View v, int position, long id) {
Toast.makeText(getApplicationContext(), mAdapter.getItem(position), Toast.LENGTH_SHORT).show();
}
});
}
public void prepare_list1(){
listNm = new ArrayList<String>();
listAnim = new ArrayList<Integer>();
for (int i = 0; i < animal.length; i++) {
listNm.add(animal[i]);
listAnim.add(getResources().getIdentifier("anim_"+animal[i], "drawable", getPackageName()));
}
}
}
i need some help. i appreciate any help. thank you in advance!

i think the problem is in your getCount() that returns 0 elements
instead of that make it like this
#Override
public int getCount() {
// TODO Auto-generated method stub
return listNm.size();
}

Develop Reference

The Android operating system is a mobile operating system that was developed by Google (GOOGL?) to be primarily used for touchscreen devices, cell phones, and tablets.

customAdapter for object isnt working - android

public class myAdapter { does not extend anything It should be public class myAdapter extends BaseAdapter //orArrayAdapter { If you still have a problem post the stacktrace for further help

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