Android中Widget的使用示例

核心提示：flag=R.id.widget28;setTitle("button2");break;case R.id.widget29:flag=R.id.widget29;setTitle("button3");break;case R.id.widget30:flag=R.id.wi

flag=R.id.widget28;

setTitle("button2");

break;

case R.id.widget29:

flag=R.id.widget29;

setTitle("button3");

break;

case R.id.widget30:

flag=R.id.widget30;

setTitle("button4");

break;

}

}

@Override

public boolean onKeyDown(int keyCode, KeyEvent event)

{

// TODO Auto-generated method stub

return super.onKeyDown(keyCode, event);

}

@Override

public boolean onTouchEvent(MotionEvent event)

{

// TODO Auto-generated method stub

x = (int) event.getX();

y = (int) event.getY();

tmp=(Button) findViewById(flag);//获取所选中的BUTTON

AbsoluteLayout.LayoutParams params1=new AbsoluteLayout.LayoutParams(50,50,x-25,y-50);

tmp.setLayoutParams(params1);//设置BUTTON的新位置

switch(event.getAction())

{

case MotionEvent.ACTION_DOWN:

tmp.invalidate();

tmp.setText("选中down");

break;

case MotionEvent.ACTION_UP:

tmp.invalidate();

tmp.setText("选中UP");

break;

case MotionEvent.ACTION_MOVE:

tmp.invalidate();

tmp.setText("选中move");

break;

}

return super.onTouchEvent(event);

}

}