View的双击动作

        有时在android中需要为某一控件设置双击监听，实现也挺简单，自己动手吧。编码永远不是问题，思路才是最重要。

public class DoubleClickDemo extends Activity {

	private String TAG = "DoubleClickDemo";

	private int count = 0;
	private long first = 0;
	private long second = 0;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_location);

		private View view = findViewById(R.id.button1);

		view.setOnClickListener(new View.OnClickListener() {

			@Override
			public void onClick(View v) {
				count++;
				if (count == 1) {
					first = System.currentTimeMillis();
					view.setOnTouchListener(new ViewOnTouchListener());
				} else if (count == 2) {
					second = System.currentTimeMillis();
					// 计算两次点击时间差，小于500毫秒判定为双击动作
					if ((second - first) <= 500) {
						// 双击待执行动作
						Log.e(TAG, "DoubleClick");
					}
					// 清空数据，为下一次监听做准备
					count = 0;
					first = 0;
					second = 0;
				}
			}
		});

	}
}