[android] Handling click events on a drawable within an EditText

Consider the following. It's not the most elegant solution but it works, I just tested it.

  1. Create a customized EditText class CustomEditText.java:

    import android.content.Context;
    import android.graphics.Rect;
    import android.graphics.drawable.Drawable;
    import android.util.AttributeSet;
    import android.view.MotionEvent;
    import android.widget.EditText;
    
    public class CustomEditText extends EditText
    {
      private Drawable dRight;
      private Rect rBounds;
    
      public CustomEditText(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
      }
      public CustomEditText(Context context, AttributeSet attrs) {
        super(context, attrs);
      }
      public CustomEditText(Context context) {
        super(context);
      }
    
      @Override
      public void setCompoundDrawables(Drawable left, Drawable top,
          Drawable right, Drawable bottom)
      {
        if(right !=null)
        {
          dRight = right;
        }
        super.setCompoundDrawables(left, top, right, bottom);
      }
    
      @Override
      public boolean onTouchEvent(MotionEvent event)
      {
    
        if(event.getAction() == MotionEvent.ACTION_UP && dRight!=null)
        {
          rBounds = dRight.getBounds();
          final int x = (int)event.getX();
          final int y = (int)event.getY();
          //System.out.println("x:/y: "+x+"/"+y);
          //System.out.println("bounds: "+bounds.left+"/"+bounds.right+"/"+bounds.top+"/"+bounds.bottom);
          //check to make sure the touch event was within the bounds of the drawable
          if(x>=(this.getRight()-rBounds.width()) && x<=(this.getRight()-this.getPaddingRight())
              && y>=this.getPaddingTop() && y<=(this.getHeight()-this.getPaddingBottom()))
          {
            //System.out.println("touch");
            this.setText("");
            event.setAction(MotionEvent.ACTION_CANCEL);//use this to prevent the keyboard from coming up
          }
        }
        return super.onTouchEvent(event);
      }
    
      @Override
      protected void finalize() throws Throwable
      {
        dRight = null;
        rBounds = null;
        super.finalize();
      }
    }
    
  2. Change your layout XML to this (where com.example is your actual project package name):

    <com.example.CustomEditText
        android:id="@+id/txtsearch"
        …
        android:layout_gravity="center_vertical"
        android:background="@layout/shape"
        android:hint="Enter place,city,state"
        android:drawableRight="@drawable/cross" 
    />
    
  3. Finally, add this (or something similar) to your activity:

    …
    CustomEditText et = (CustomEditText) this.findViewById(R.id.txtsearch);
    …
    

I might be a bit off with the calculation of the touch bounds for the nested drawable but you get the idea.

I hope this helps.

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