I'm using a Spinner below a title (TextView). It is initially set to View.GONE and when the title is clicked, Spinner is set to View.VISIBLE and the popup window is shown using performClick() below the title, which is what I want.
But I asynchronously update the BaseAdapter to add more items to the Spinner when it is still VISIBLE. After the update the Spinner is moved upwards and is overlaying on the title. How can I fix this?
I have used android:dropDownVerticalOffset, but shows the same behaviour after update.
My layout :
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:id="#+id/title"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<FrameLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<LinearLayout
android:id="#+id/some_other_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
</LinearLayout>
<android.support.v7.widget.AppCompatSpinner
android:id="#+id/spinner"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:animateLayoutChanges="true"
android:background="#null"
android:overlapAnchor="true"
android:spinnerMode="dropdown"
android:visibility="gone"></android.support.v7.widget.AppCompatSpinner>
</FrameLayout>
</LinearLayout>
Ok.
I Tried running you problem with some slight adjustments on my mobile, and I find no issues.
To simulate your asynchronous addition of items, I added a button.It's OnClick will add items to the adapter.
Next, Instead of extending BaseAdapter, I just used an ArrayAdapter.
And, I just added weights to the LinearLayout to help me with the layout look.
Here Is The Layout :
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<TextView
android:id="#+id/title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Title"
android:textSize="20dp"
android:gravity="center"
android:textColor="#android:color/black"
/>
<FrameLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
>
<LinearLayout
android:id="#+id/some_other_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
</LinearLayout>
<android.support.v7.widget.AppCompatSpinner
android:id="#+id/spinner"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:animateLayoutChanges="true"
android:background="#null"
android:overlapAnchor="true"
android:spinnerMode="dropdown"></android.support.v7.widget.AppCompatSpinner>
</FrameLayout>
<Button
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:text="Load Adapter"
android:id="#+id/button"
/>
</LinearLayout>
And Here Is the Code for the Activity :
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main_layout);
}
Spinner spinner;
Button button;
#Override
protected void onResume() {
super.onResume();
spinner = (Spinner) findViewById(R.id.spinner);
button = (Button) findViewById(R.id.button);
List<String> list = new ArrayList<>();
list.add(getRandomStringInRange('A','Z',5));
ArrayAdapter<String> adapter= new ArrayAdapter(MainActivity.this,android.R.layout.simple_spinner_item,list);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner.setAdapter(adapter);
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
ArrayAdapter<String> adapter = (ArrayAdapter<String>) spinner.getAdapter();
adapter.add(getRandomStringInRange('A','Z',5));
}
});
}
public int getRandomNumberInRange(int lower,int higher){
int range = higher-lower;
range=(int)(range*Math.random());
return lower + range;
}
public String getRandomStringInRange(char lower,char higher,int length){
String str ="";
for(int i=0;i<length;i++)
str+=(char)(getRandomNumberInRange(lower,higher));
return str;
}
}
I did not find the spinner overlapping the title or it moving at all.
It's working fine.
If you want,I'll send you screenshots.
Please tell me if you are facing any other issues
I couldn't really find a solution for this. But solved by setting fixed height for the spinner as mentioned in this solution.
Spinner spinner = (Spinner) findViewById(R.id.spinner);
try {
Field popup = Spinner.class.getDeclaredField("mPopup");
popup.setAccessible(true);
// Get private mPopup member variable and try cast to ListPopupWindow
android.widget.ListPopupWindow popupWindow = (android.widget.ListPopupWindow) popup.get(spinner);
// Set popupWindow height to 500px
popupWindow.setHeight(500);
}
catch (NoClassDefFoundError | ClassCastException | NoSuchFieldException | IllegalAccessException e) {
// silently fail...
}
Related
I'm writing an Android lab and somehow my bottom button and text enter part are not showing. I'm using Linear Layout. it shows in the XML file design mode but doesn't show when running the program. Can someone help me find out what the problem is?
I tried to add a pic of what my design page and program run pic but it's not letting me, when I run the program I can see the two strings that I added to an array, but just not see the button and plain text at the bottom
here is my code, I have my java file code list below the xml code:
<ListView
android:id="#+id/listView"
android:layout_width="match_parent"
android:layout_height="684dp" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="50dp"
android:orientation="horizontal"
android:layout_gravity="bottom">
<Button
android:id="#+id/send"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="send" />
<EditText
android:id="#+id/typehere"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:ems="10"
android:inputType="textPersonName"
android:text="Type here"
android:textColor="#9C9B9B" />
<Button
android:id="#+id/receive"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="receive" />
</LinearLayout>
</LinearLayout>
</ListView>
my activity
public class ChatRoomActivity extends AppCompatActivity {
ListView listView;
EditText input;
Button receive;
Button send;
ArrayList<String> items;
ArrayAdapter<String> adapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_chat_room);
listView = findViewById(R.id.listView);
input = findViewById(R.id.typehere);
receive = findViewById(R.id.receive);
send = findViewById(R.id.send);
items = new ArrayList<>();
items.add("I'm sending");
items.add("I'm receiving");
adapter = new ArrayAdapter<>(getApplicationContext(), android.R.layout.simple_list_item_1, items);
listView.setAdapter(adapter); // see the list of result of adaptor
receive.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
String text = input.getText().toString();
addMessage(text);
input.setText("");
}
});
send.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
String text = input.getText().toString();
addMessage(text);
input.setText("");
}
});
}
public void addMessage(String message){
items.add(message);
listView.setAdapter(adapter);
}
}
after straggling in the display, I found the height for ListView is longer than my screenview, so I edit the xml to
<ListView
android:id="#+id/listView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginBottom="50dp"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_alignParentBottom="true"
android:layout_gravity="bottom"
android:layout_marginTop="-50dp"
android:orientation="horizontal"
tools:visibility="visible">
and the rest of the code didn't change
I guess for others that has same issue try to shorter the listview's height
You can use RelativeLayout and can add android:layout_above attribute to your ListView
Example code:
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<ListView
android:id="#+id/listView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="#+id/llBottomLayout"/>
<LinearLayout
android:id="#+id/llBottomLayout"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_alignParentBottom="true"
android:layout_gravity="bottom"
android:orientation="horizontal"
tools:visibility="visible">
</LinearLayout>
</RelativeLayout>
I want to create EditText with clickable menu underneath. User should be able to write his own custom text into EditText or choose from predefined options.
I though about adding recyclerView under EditText, but for 4-5 options its waste of recylerView. Is there any way to do it better (I dont want to write a lot of code for this feature).
AutoCompleteTextView is a component used to show suggestions while writing in an editable text field. The suggestions list is shown in a drop-down menu from which a user can select the desired item. The list of suggestions is obtained from an adapter and it appears only after a number of characters that are specified in the threshold.
Here is a simple example of AutoCompleteTextView:
<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:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
android:paddingBottom="#dimen/activity_vertical_margin"
tools:context=".MainActivity">
<TextView
android:id="#+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginTop="15dp"
android:text="X" />
<AutoCompleteTextView
android:id="#+id/autoCompleteTextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="#+id/textView"
android:layout_marginLeft="36dp"
android:layout_marginTop="17dp"
android:ems="10"
android:text="">
<requestFocus />
</AutoCompleteTextView>
</RelativeLayout>
The MainActivity.java is defined below.
public class MainActivity extends Activity {
String[] animals = {"Ant", "Bbird", "Cat"};
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//Creating the instance of ArrayAdapter containing list of fruit names
ArrayAdapter<String> adapter = new ArrayAdapter<String>
(this, android.R.layout.select_dialog_item, animals);
//Getting the instance of AutoCompleteTextView
AutoCompleteTextView actv = (AutoCompleteTextView) findViewById(R.id.autoCompleteTextView);
actv.setThreshold(1);//will start working from first character
actv.setAdapter(adapter);//setting the adapter data into the AutoCompleteTextView
actv.setTextColor(Color.BLACK);
}
}
try this,
xml
<LinearLayout 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:gravity="center"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="State:" />
<AutoCompleteTextView
android:id="#+id/autoCompleteTextView"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
java
public class MainActivity extends AppCompatActivity {
AutoCompleteTextView autoCompleteTextView;
String[] arr={"used","new","repaired"};
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2);
autoCompleteTextView=findViewById(R.id.autoCompleteTextView);
ArrayAdapter aa=new ArrayAdapter(this,android.R.layout.simple_list_item_1,arr);
autoCompleteTextView.setAdapter(aa);
}
}
I have fetched data from the server from the category class.The getcategories method return the List of String containing spinner items. When I click on the spinner item. Nothing happens. Is there any mistake in my code. Please help.
This is my java code.
public void fetchPropertyType(){
category = new Category(); //Spinner Item model
//categories is a array list of String which contains the items of spinner
categories = category.getCategories(AddPropertyActivity.this);
//Property Type Spinner Adapter
propertyTypeSpinner = (Spinner) findViewById(R.id.property_type_spinner);
Log.e("Test", "Just a test message");
ArrayAdapter<String> dataAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, categories);
// Drop down layout style - list view with radio button
dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
// attaching data adapter to spinner
propertyTypeSpinner.setAdapter(dataAdapter);
propertyTypeSpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
#Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
Toast.makeText(parent.getContext(),
"OnItemSelectedListener : " + parent.getItemAtPosition(position).toString(),
Toast.LENGTH_SHORT).show();
}
#Override
public void onNothingSelected(AdapterView<?> parent) {
Log.e("Test", "Nothing selected on spinner activity");
}
});
}
This is my layout
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginLeft="5dp"
android:layout_weight="1">
<TextView
android:id="#+id/spinner_text"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginRight="50dp"
android:gravity="center"
android:text="Property Type"
android:textAlignment="textEnd"/>
<Spinner
android:id="#+id/property_type_spinner"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:spinnerMode="dropdown"/>
</RelativeLayout>
You just should do this.
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginLeft="5dp"
android:layout_weight="1"
android:background="#drawable/border">
<TextView
android:id="#+id/spinner_text"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginRight="50dp"
android:gravity="center"
android:text="Property Type"
android:textAlignment="textEnd"/>
<Spinner
android:id="#+id/property_type_spinner"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:spinnerMode="dropdown"/>
</RelativeLayout>
In the Spinner
Change
android:layout_height="match_parent"
To
android:layout_height="wrap_content"
Because you use android:layout_height="match_parent",so you can't see your list item.And nothing happens.
As you are using
<Spinner
android:id="#+id/property_type_spinner"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:spinnerMode="dropdown"/>
Which wraps the height of spinner so try to give custom height to it so that i t will be clickable
I did this
<Spinner
android:id="#+id/property_type_spinner"
android:layout_width="match_parent"
android:layout_height="50dp"
android:spinnerMode="dropdown"/>
and keep your text view height wrap_content as
<TextView
android:id="#+id/spinner_text"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginRight="50dp"
android:gravity="center"
android:text="Property Type"/>
im trying to make an activity that searches a DB based on an input string and then returns the results in a list view. All this is working however, My listview items are not clickable. I have tried changing the focus and clickable attributes but nothing has worked so far.
Main XML (add_friend_layout.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/AddFriendHeaderLayout"
android:layout_marginTop="3dip"
android:layout_height="45dip"
android:orientation="horizontal"
android:layout_width="fill_parent"
android:gravity="center">
<EditText
android:id="#+id/et_SearchFriend"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="20dp"
android:ems="10"
android:inputType="text" />
<Button
android:id="#+id/bt_SearchFriend"
android:layout_width="wrap_content"
android:layout_height="40dip"
android:focusable="false"
android:icon="#android:drawable/ic_search_category_default"
android:text="Search" >
</Button>
</LinearLayout>
<LinearLayout android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_marginTop="60dip"
android:layout_marginBottom="5dip"
android:layout_alignParentBottom="true"
android:layout_above="#+id/AddFriendHeaderLayout"
android:id="#+id/searchFriendFooterLayout">
<ListView
android:id="#android:id/list"
android:layout_width="match_parent"
android:clickable="true"
android:layout_height="wrap_content">
</ListView>
</LinearLayout>
</RelativeLayout>
ListView XML (single_listview_layout.xml):
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:clickable="true" >
<TextView
android:id="#+id/tv_list"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:padding="10dp"
android:textSize="20sp" >
</TextView>
</LinearLayout>
Main Java Function (SearchFriendActivity.java):
public class SearchFriendActivity extends ListActivity {
//Progress Dialog
private ProgressDialog pDialog;
private Button bt_searchFriend;
private EditText et_Search_String;
private ListView tv_listview;
String[] arrFriends;
String[] arrUserId;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
try{
setContentView(R.layout.add_friend_layout);
bt_searchFriend= (Button) findViewById(R.id.bt_SearchFriend);
et_Search_String = (EditText) findViewById(R.id.et_SearchFriend);
tv_listview = (ListView) findViewById(R.id.tv_list);
String searchString="";
//searchString = String.valueOf(et_Search_String.getText());
Log.i ("log_search","value of searchString: " + searchString);
bt_searchFriend.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View view) {
try{
searchFriends aTask = new searchFriends();
aTask.execute(String.valueOf(et_Search_String.getText()));
String rResult = aTask.get();
// Convert aResult to array
arrFriends = convertJSONData(rResult);
arrUserId = convertJSONDataToUserArray(rResult);
setListAdapter(new ArrayAdapter<String>
(getBaseContext(),
R.layout.single_listview_layout,
R.id.tv_list,
arrFriends));
}catch(Exception e){
Log.e ("log_search_load",e.toString());
}
}
});
tv_listview = getListView();
//handler for List Item click
tv_listview.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
// When clicked, show a toast with the TextView text
Toast.makeText(getApplicationContext(),
"Friend request sent for " +
((TextView) view).getText(),
Toast.LENGTH_SHORT).show();
Log.i("log_search_listclick", "Listview clicked");
}
});
}catch(Exception e){
Log.e ("log_search_load2",e.toString());
}
}
Firstly, don't use focusable and clickable. When you use setOnclick or another they are auto creating.
Secondly, remove try cache blog then start application. Because when the problem created program will contining and you can't understand where is the problem.
===>Thirdly<====
you are used (tv_listview=...) second twice
tv_listview = (ListView) findViewById(R.id.tv_list);
tv_listview = getListView();
then you are trying tv_listview.setOnItemClickListener..... If second view is not first view seton not working on "R.id.tv_list".
i want to add data into the listview when pressing the button.
but it is not getting updated pressing the button dont know how it is not getting worked.
Please help me.
here is the code below
#SuppressLint("NewApi")
public class Messanger extends Activity {
ArrayAdapter<String> adapter;
ListView output;
EditText box;
String msg[];
Button btn;
int counter=0;
ArrayList<String> listItems;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_messanger);
output=(ListView)findViewById(R.id.textOutput);
box=(EditText)findViewById(R.id.textInput);
listItems = new ArrayList<String>();
adapter = new ArrayAdapter<String> (Messanger.this,android.R.layout.simple_list_item_1, android.R.id.text1, listItems);
output.setAdapter(adapter);
btn=(Button)findViewById(R.id.btnSend);
btn.setOnClickListener(new OnClickListener()
{
public void onClick(View arg0) {
// TODO Auto-generated method stub
Toast.makeText(Messanger.this, "in event", Toast.LENGTH_LONG).show();
sendMessage(box.getText().toString());
//stItems.notifyAll();
}
});
}
public void sendMessage(String message)
{
listItems.add("me: "+message);
adapter.addAll(listItems);
adapter.notifyDataSetChanged();
}
}
And my Layout looks like this
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<ScrollView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="10" >
<ListView
android:id="#+id/textOutput"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:paddingLeft="5dp"
android:paddingRight="5dp"
android:paddingTop="5dp" />
</ScrollView>
<LinearLayout
android:id="#+id/linearLayout1"
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="100"
android:paddingLeft="5dp"
android:paddingRight="5dp"
android:paddingBottom="5dp"
android:baselineAligned="true">
<EditText android:layout_weight="1" android:id="#+id/textInput"
android:layout_height="45dp" android:layout_width="fill_parent">
<requestFocus></requestFocus>
</EditText>
<Button android:layout_weight="1" android:text="Send"
android:layout_height="45dp" android:layout_width="125dp"
android:id="#+id/btnSend"></Button>
</LinearLayout>
</LinearLayout>
thanks in advance
Not sure why is isn't updating. Code looks OK to me. You might try clearing the array before calling addAll() because if you don't you will end up with duplicates in your list (which probably isn't what you want. Should look like this:
listItems.add("me: "+message);
adapter.clear();
adapter.addAll(listItems);
adapter.notifyDataSetChanged();
The reason it isn't updating is probably somewhere else though. Post your layout, maybe the problem is in there.
EDIT: After seeing the layout:
Yep, the problem is in your layout. You don't put a ListView inside a ScrollView. A ListView already knows how to scroll. Get rid of the surrounding ScrollView and you should be good.
Notice that you always add the same items by calling
adapter.addAll(listItems);
Regardless,
Try debugging you getView() function in the adapter.