How To Drag Images From One Imageview And Drop To Another Image View.

public class Quiz extends Activity { int windowwidth; int windowheight; ImageView ima ima2; private View selected_item = null; private int

Solution 1:

For drag and drop please go through the following links .

http://blahti.wordpress.com/2011/10/03/drag-drop-for-android-gridview/

http://www.twylah.com/dodulz/tweets/169426982533206016

Solution 2:

You can achieve it in followin way

publicclassDragAndDropBasicActivityextendsActivityimplementsOnTouchListener {
    private ImageView letterView;                       // The letter that the user drags.private ImageView emptyLetterView;              // The letter outline that the user is supposed to drag letterView to.private AbsoluteLayout mainLayout;
    
    
    /** Called when the activity is first created. */@OverridepublicvoidonCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
    
        mainLayout = (AbsoluteLayout) findViewById(R.id.mainLayout);
        mainLayout.setOnTouchListener(this);
        letterView = (ImageView) findViewById(R.id.letterView);
        letterView.setOnTouchListener(this);
    
        emptyLetterView = (ImageView) findViewById(R.id.emptyLetterView);
    }
    
    privatebooleandragging=false;
    privateRecthitRect=newRect();
    
    @Override/** NOTE:  Had significant problems when I tried to react to ACTION_MOVE on letterView.   Kept getting alternating (X,Y) 
     * locations of the motion events, which caused the letter to flicker and move back and forth.  The only solution I could 
     * find was to determine when the user had touched down on the letter, then process moves in the ACTION_MOVE 
     * associated with the mainLayout.
    */publicbooleanonTouch(View v, MotionEvent event) {
        booleaneventConsumed=true;
        intx= (int)event.getX();
        inty= (int)event.getY();
    
        intaction= event.getAction();
        if (action == MotionEvent.ACTION_DOWN) {
            if (v == letterView) {
                letterView.setImageResource(R.drawable.carkey1);
                dragging = true;
                eventConsumed = false;
            }
        } elseif (action == MotionEvent.ACTION_UP) {
    
            if (dragging) {
                emptyLetterView.getHitRect(hitRect);
                if (hitRect.contains(x, y)) {
                    letterView.setImageResource(R.drawable.carkey3);
                    setSameAbsoluteLocation(letterView, emptyLetterView);
                }
            }
            dragging = false;
            eventConsumed = false;
    
        } elseif (action == MotionEvent.ACTION_MOVE) {
            if (v != letterView) {
                if (dragging) {
                    setAbsoluteLocationCentered(letterView, x, y);
                }
            }
        }
    
        return eventConsumed;
    
    }
    
    
    privatevoidsetSameAbsoluteLocation(View v1, View v2) {
        AbsoluteLayout.LayoutParamsalp2= (AbsoluteLayout.LayoutParams) v2.getLayoutParams();
        setAbsoluteLocation(v1, alp2.x, alp2.y);
    }
    
    
    privatevoidsetAbsoluteLocationCentered(View v, int x, int y) {
        setAbsoluteLocation(v, x - v.getWidth() / 2, y - v.getHeight() / 2);
    }
    
    
    privatevoidsetAbsoluteLocation(View v, int x, int y) {
        AbsoluteLayout.LayoutParamsalp= (AbsoluteLayout.LayoutParams) v.getLayoutParams();
        alp.x = x;
        alp.y = y;
        v.setLayoutParams(alp);
    }
}

xml

<xmlversion="1.0"encoding="utf-8"?><AbsoluteLayoutxmlns:android="http://schemas.android.com/apk/res/android"android:id="@+id/mainLayout"android:layout_width="fill_parent"android:layout_height="fill_parent" ><ImageViewandroid:id="@+id/emptyLetterView"android:layout_width="wrap_content"android:layout_height="wrap_content"android:src="@drawable/carkey2" ></ImageView><ImageViewandroid:id="@+id/letterView"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_x="200dp"android:layout_y="450dp"android:src="@drawable/carkey1" ></ImageView></AbsoluteLayout>