Question

At first: I know that onDrag and onLongClick available only on API 11(android 3.0) or higher.

Class implements onDragListener and onLonglickListener. It’s work only at API 11 and higher.
when I want set setonLongclickListener on view I use code like this:

 .....
 protected static final int sdk = android.os.Build.VERSION.SDK_INT;
 ......
 ......
 if(sdk >= 11){ 
     for (int i = 0; i < LlayoutFront.getChildCount(); i++){ 
         LlayoutFront.getChildAt(i).setOnDragListener(this);
     }   
     LlayoutDeleteArea.setOnDragListener(this);
     LlayoutSetupArea.setOnDragListener(this);
     findViewById(R.id.RelativeLMain).setOnDragListener(this);
 }

but app crashed when i try to run it on android 2.1.

@SuppressLint("NewApi") before my Class isn’t save my situation.

Any ideas?

Answer 1

I solve it 😉
remove implements method onDragListener and onLongClickListener from me Class.
and modify code like this:

if(sdk >= 11){ 
    for (int i = 0; i < LlayoutFront.getChildCount(); i++){
        LlayoutFront.getChildAt(i).setOnDragListener(new OnDragListener() {                 
            public boolean onDrag(View v, DragEvent event) {
                return myOnDrag(v, event);
            }
        });
    }
    LlayoutDeleteArea.setOnDragListener(new OnDragListener() {                  
        public boolean onDrag(View v, DragEvent event) {
            return myOnDrag(v, event);
        }
    });
    LlayoutSetupArea.setOnDragListener(new OnDragListener() {                   
        public boolean onDrag(View v, DragEvent event) {
            return myOnDrag(v, event);
        }
    });
    findViewById(R.id.RelativeLMain).setOnDragListener(new OnDragListener() {                   
        public boolean onDrag(View v, DragEvent event) {
            return myOnDrag(v, event);
        }
    });
}