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我有多个视图被拖动，每个视图都代表一种情感。这个想法是让每个视图向数据库发送一个条目，该条目根据拖动的视图而变化。

视图是在这里创建的：

_root = (ViewGroup)findViewById(R.id.root);

_view = new ImageView(this);
_view.setImageResource(R.drawable.smile); 
_view2 = new ImageView(this);
_view2.setImageResource(R.drawable.frown); 



RelativeLayout.LayoutParams layoutParams = new RelativeLayout.LayoutParams(150, 50);
layoutParams.leftMargin = 250;
layoutParams.topMargin = 250;
layoutParams.bottomMargin = -250;
layoutParams.rightMargin = -250;
_view.setLayoutParams(layoutParams);
_view.setOnTouchListener(this);

RelativeLayout.LayoutParams layoutParams2 = new RelativeLayout.LayoutParams(150, 50);
layoutParams2.leftMargin = 250;
layoutParams2.topMargin = 500;
layoutParams2.bottomMargin = -250;
layoutParams2.rightMargin = -250;
_view2.setLayoutParams(layoutParams2);
_view2.setOnTouchListener(this);
_root.addView(_view);
_root.addView(_view2);

}

移动和拖动在这里定义：

public boolean onTouch(View view, MotionEvent event) {
    final int X = (int) event.getRawX();
    final int Y = (int) event.getRawY();
    switch (event.getAction() & MotionEvent.ACTION_MASK) {
        case MotionEvent.ACTION_DOWN:
            RelativeLayout.LayoutParams lParams = (RelativeLayout.LayoutParams) view.getLayoutParams();
            _xDelta = X - lParams.leftMargin;
            _yDelta = Y - lParams.topMargin;
            break;
        case MotionEvent.ACTION_UP:  
            Intent intent = new Intent(this, Exit_Activity.class);
         startActivity(intent);
            break;
        case MotionEvent.ACTION_POINTER_DOWN:
            break;
        case MotionEvent.ACTION_POINTER_UP:
            break;
        case MotionEvent.ACTION_MOVE:
            RelativeLayout.LayoutParams layoutParams = (RelativeLayout.LayoutParams) view.getLayoutParams();
            layoutParams.leftMargin = X - _xDelta;
            layoutParams.topMargin = Y - _yDelta;
            layoutParams.rightMargin = -250;
            layoutParams.bottomMargin = -250;
            view.setLayoutParams(layoutParams);
            break;
    }
    _root.invalidate();
    return true;
}

}

如您所见，ACTION_UP 当前将用户发送到下一个活动，而不管拖动哪个视图。让应用区分视图的最佳方式是什么？

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1 回答 1

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为单个视图设置 ID。单击视图时检索 ID。ID是每个视图的唯一标识。设置标识：

view.setId(x);

单击后，检索 id：

id = view.getId();
于 2012-11-02T01:06:54.987 回答