android137 360 双击三击事件

package com.itheima52.doubleclick;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Toast;
/**
 * 模拟双击事件
 */
public class MainActivity extends Activity {

    private long firstClickTime;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }
    public void onClick(View view) {
        if (firstClickTime > 0) {// 发现之前点击过一次
            if (System.currentTimeMillis() - firstClickTime < 500) {// 判断两次点击是否小于500毫秒
                Toast.makeText(this, "双击啦!", Toast.LENGTH_SHORT).show();
                firstClickTime = 0;//重置时间, 重新开始
                return;
            }
        }
        firstClickTime = System.currentTimeMillis();
    }
}