CODEWITHSUNDEEP
androiddrag-and-dropandroid-imageview
sr.farzad
sr.farzad

Reputation: 665

How to disable right and left drag ImageView in Android?

in my application I want drag and Drop Imageview By touch in Screen.I could drag it on screen in Four Directions but I want just drag in top to Botton and disable right and left for drag Imageview.

my code for drag-drop imageview in srceen:

public class MainActivity extends Activity implements OnTouchListener,
        OnDragListener {
    private static final String LOGCAT = null;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        findViewById(R.id.textView1).setOnTouchListener(this);
        findViewById(R.id.pinkLayout).setOnDragListener(this);
        findViewById(R.id.yellowLayout).setOnDragListener(this);
    }

    public boolean onTouch(View view, MotionEvent motionEvent) {
        if (motionEvent.getAction() == MotionEvent.ACTION_DOWN) {
            DragShadowBuilder shadowBuilder = new View.DragShadowBuilder(view);
            view.startDrag(null, shadowBuilder, view, 0);
            view.setVisibility(View.INVISIBLE);
            return true;
        } else {
            return false;
        }
    }

    public boolean onDrag(View layoutview, DragEvent dragevent) {
        int action = dragevent.getAction();
        switch (action) {
        case DragEvent.ACTION_DRAG_STARTED:
            Log.d(LOGCAT, "Drag event started");
            break;
        case DragEvent.ACTION_DRAG_ENTERED:
            Log.d(LOGCAT, "Drag event entered into " + layoutview.toString());
            break;
        case DragEvent.ACTION_DRAG_EXITED:
            Log.d(LOGCAT, "Drag event exited from " + layoutview.toString());
            break;
        case DragEvent.ACTION_DROP:
            Log.d(LOGCAT, "Dropped");
            View view = (View) dragevent.getLocalState();
            ViewGroup owner = (ViewGroup) view.getParent();
            owner.removeView(view);
            LinearLayout container = (LinearLayout) layoutview;
            container.addView(view);
            view.setVisibility(View.VISIBLE);
            break;
        case DragEvent.ACTION_DRAG_ENDED:
            Log.d(LOGCAT, "Drag ended");
            break;
        default:
            break;
        }
        return true;
    }
}

How to Resolve it? thanks

Upvotes: 2

Views: 1677

Answers (1)

Harshit Rathi
Harshit Rathi

Reputation: 1862

use this might be help you...

switch (event.getAction() & MotionEvent.ACTION_MASK) {
case MotionEvent.ACTION_DOWN:
savedMatrix.set(matrix);
start.set(event.getX(), event.getY());
Log.d(TAG, "mode=DRAG" );
mode = DRAG;
break;
case MotionEvent.ACTION_UP:
case MotionEvent.ACTION_POINTER_UP:
mode = NONE;
Log.d(TAG, "mode=NONE" );
break;
case MotionEvent.ACTION_MOVE:
if (mode == DRAG) {
matrix.set(savedMatrix);
matrix.postTranslate(event.getX() - start.x,
event.getY() - start.y);
}
break;
}

Upvotes: 2

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