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How To Set Click Listener On A Whole ListView (not On The Individual Items Of ListView)?

- 1 answer

I want to set onClickListener() on the whole layout space of ListView i.e. if I click anywhere on layout area of a ListView, a specific task should be performed. How can I accomplish that in Android using java?

Notice that I do not want onItemClickListener(), tapping anywhere on the screen should perform the task.

ChatActivity.java

chatList = (ListView) findViewById(R.id.chat_list);


        adapter = new ChatMessageAdapter(ChatActivity.this, tempList);

        chatList.setAdapter(adapter);

        chatList.setOnTouchListener(new View.OnTouchListener() {
            @Override
            public boolean onTouch(View v, MotionEvent event) {
                // code here
                return false;
            }
        });

activity_chat.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"
    android:id="@+id/parent_layout"
    tools:context=".MainActivity"
    android:layout_marginRight="18dp"
    android:layout_marginLeft="18dp">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        android:padding="18dp"
        android:backgroundTint="@color/colorAccent">

        <TextView
            android:layout_width="0dp"
            android:layout_weight="1"
            android:layout_height="wrap_content"
            android:text="Person 1"
            android:textStyle="bold"
            android:gravity="left"/>
        <TextView
            android:layout_width="0dp"
            android:layout_weight="1"
            android:layout_height="wrap_content"
            android:text="Person 2"
            android:textStyle="bold"
            android:gravity="right"/>

    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">

    <ListView
        android:id="@+id/chat_list"
        android:orientation="vertical"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:divider="@null"/>

    </LinearLayout>

</LinearLayout>
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Answer

Try this sample:

MainActivity.java

public class MainActivity extends AppCompatActivity {

final private static float TOUCH_TOLERANCE = 10;
float fingerDownX, fingerDownY;

@SuppressLint("ClickableViewAccessibility")
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    ArrayList<String> datalist = new ArrayList<>();
    for(int i=0; i<30; i++){
        datalist.add("Item " + i);
    }
    ListView listView = findViewById(R.id.listView);
    ArrayAdapter adapter = new ArrayAdapter<>(getApplicationContext(), android.R.layout.simple_list_item_1, datalist);
    listView.setAdapter(adapter);

    listView.setOnTouchListener(new View.OnTouchListener() {
        @Override
        public boolean onTouch(View view, MotionEvent motionEvent) {
            float fingerX = motionEvent.getX();
            float fingerY = motionEvent.getY();
            if(motionEvent.getAction() == MotionEvent.ACTION_DOWN){
                fingerDownX = fingerX;
                fingerDownY = fingerY;
            }
            if((motionEvent.getAction() == MotionEvent.ACTION_UP)&&
                    (Math.abs(fingerDownX - fingerX) < TOUCH_TOLERANCE)&&
                    (Math.abs(fingerDownY - fingerY) < TOUCH_TOLERANCE)){
                Toast.makeText(getApplicationContext(), "List Clicked!", Toast.LENGTH_SHORT).show();
            }
            return false;
        }
    });
}
}

activity_main.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=".MainActivity">

<ListView
    android:id="@+id/listView"
    android:layout_width="match_parent"
    android:layout_height="match_parent"></ListView>

</LinearLayout>

Hope that helps!

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source: stackoverflow.com
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