Android - Gesture Detection (Swipe up/down) on particular view

Question

I am trying to implement the OnGestureListener in Android.
I have three TextViews in my layout.
What i am trying to achieve is to set Gesture Listener for two of the textViews .
Here is the layout -

    <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/rlMain"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content" >

    <TextView
        android:id="@+id/tvOne"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_marginBottom="10dp"
        android:layout_marginTop="5dp"
        android:gravity="center"
        android:text="One" />

    <TextView
        android:id="@+id/tvTwo"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_below="@+id/tvOne"
        android:layout_centerHorizontal="true"
        android:layout_marginBottom="10dp"
        android:layout_marginTop="5dp"
        android:gravity="center"
        android:text="Two" />

    <TextView
        android:id="@+id/tvThree"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_below="@+id/tvTwo"
        android:layout_centerHorizontal="true"
        android:layout_marginBottom="10dp"
        android:layout_marginTop="5dp"
        android:gravity="center"
        android:text="Three" />

</RelativeLayout>

And here is the activity

    import android.app.Activity;
    import android.os.Bundle;
    import android.util.Log;
    import android.view.GestureDetector;
    import android.view.GestureDetector.OnGestureListener;
    import android.view.MotionEvent;

    public class TimeActivity extends Activity implements OnGestureListener {

    GestureDetector gestureScanner;

    @SuppressWarnings("deprecation")
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.wheelview);
        gestureScanner = new GestureDetector(this);

    }

    @Override
    public boolean onTouchEvent(MotionEvent event) {
        // TODO Auto-generated method stub
        return gestureScanner.onTouchEvent(event);
    }

    @Override
    public boolean onDown(MotionEvent e) {
        // TODO Auto-generated method stub
        return true;
    }

    @Override
    public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
            float velocityY) {
        // TODO Auto-generated method stub
        Log.i("Test", "On Fling");
        return true;
    }

    @Override
    public void onLongPress(MotionEvent e) {
        // TODO Auto-generated method stub

    }

    @Override
    public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX,
            float distanceY) {
        // TODO Auto-generated method stub
        return false;
    }

    @Override
    public void onShowPress(MotionEvent e) {
        // TODO Auto-generated method stub

    }

    @Override
    public boolean onSingleTapUp(MotionEvent e) {
        // TODO Auto-generated method stub
        return false;
    }
}

At present Fling for all the three textviews is getting called .
Is there any way through which i can set the Gesture Listener for some particular views in the layout.
Any help will be highly appreciated.

Gordan

Answer 1

Do this in your onCreate method.

findViewById(R.id.tvOne).setOnTouchListener(new View.OnTouchListener() { 
            @Override
           public boolean onTouch(View v, MotionEvent event){
                return gestureScanner.onTouchEvent(event);
           }
  });

Ekg

Thanks for the Answer. Both of the answers are correct. I can not accept both the answers , I am up voting you both. – Gordan

How to set onLongPress for particular layout(Relative). – Coahuila

@reegan29, the same way. One of the override methods on a GestureDetector is onLongPress() – Cimbri

How can we know which view was flung? – Contradiction

@SrujanBarai In above case View with id R.id.tvOne has listener so thats the one being touched. Or you can use the View passed in onTouch() – Ekg

Oh yhh that is obvious but the onFling method does not have a view parameter. – Contradiction

How can i use ACTION_MOVE using this gestureScanner – Enchilada

Answer 2

You can set OnTouchListeners to individual TextViews.

findViewById(R.id.tvOne).setOnTouchListener(new OnTouchListener() {

    @Override
    public boolean onTouch(View view, MotionEvent event) {
         // Your code here
    }
}

Extensive

Answer 3

A suggestion

If you don't want to detect all gesture,try this class: SimpleGestureListener created by myself.

Now here are some snippets for this class's usage.

Usage

public class MainActivity extends AppCompatActivity {
    private static final String TAG = "MainActivity";
    private GestureDetector mDetector;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        SimpleGestureListener simpleGestureListener = new SimpleGestureListener();
        simpleGestureListener.setListener(new SimpleGestureListener.Listener() {
            @Override
            public void onScrollHorizontal(float dx) {
                Log.i(TAG,"horizontal = " +dx);
            }

            @Override
            public void onScrollVertical(float dy) {
                Log.i(TAG,"vertical = " +dy);
            }
        });
        mDetector = new GestureDetector(this, simpleGestureListener);
    }

    @Override
    public boolean onTouchEvent(MotionEvent event) {
        mDetector.onTouchEvent(event);
        return super.onTouchEvent(event);
    }
}

It can be used for detecting swiping gesture :

• left or right
• up or down

Presentationism

Please make you interface "Listener" public in your github project , Thanks – Maurili