Android setOnTouchListener试用模版

reflashInfoRL.setOnTouchListener(new View.OnTouchListener(){
			@Override
			public boolean onTouch(View v, MotionEvent event){
				// TODO Auto-generated method stub
				x = event.getRawX();   
	            y = event.getRawY()-25;   //25是系统状态栏的高度
				switch (event.getAction()) {
				case MotionEvent.ACTION_DOWN:
					//按下
					reflashInfoRL.setBackgroundColor(getResources().getColor(R.color.gray));
					//获取相对View的坐标，即以此View左上角为原点
		        	mTouchStartX =  event.getX();  
		            mTouchStartY =  event.getY();
					break;
				case MotionEvent.ACTION_MOVE:
					//移动
					break;
				case MotionEvent.ACTION_UP:
					//抬起
					reflashInfoRL.setBackgroundColor(getResources().getColor(R.color.white));
					if(Math.abs(event.getY()-mTouchStartY)<5)
		        	{
						mTouchStartX=mTouchStartY=0;
						new AlertDialog.Builder(getApplicationContext())
						.setTitle("提醒").setMessage("确定要从服务器下载更新通讯录？")
						.setNegativeButton("取消", null)
						.setPositiveButton("确定", new DialogInterface.OnClickListener() {
							
							@Override
							public void onClick(DialogInterface dialog, int which) {
								// TODO Auto-generated method stub
								getAddressInfo();
							}
						}).show();
		        	}
					break;
				}
				return true;
			}
		});