android的多次点击事件的实现（有源码）

三次点击事件的原理图：数组的复制（android源码的调用）：

下面就是第一步：

创建long数组，里面的数字代表点击的次数。

下面是主要代码实现：

system.arraycopy();里面的参数描述：

 

最后就是在if里面实现你想要的按钮的点击逻辑，不过最后一点很重要，当按钮还有触摸的点击事件的时候，有一点：

一定记得返回false；

下面贴出我的源码：tv_drag实现双击居中方法（里面有触摸事件）：

 

 

package com.example.mobilesafe74.activity;

 

import com.example.mobilesafe74.R;
import com.example.mobilesafe74.utils.ConstantValue;
import com.example.mobilesafe74.utils.SpUtil;

 

import android.app.Activity;
import android.os.Bundle;
import android.os.SystemClock;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.View.OnTouchListener;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.RelativeLayout;
import android.widget.RelativeLayout.LayoutParams;

 

public class ToastLocationActivity extends Activity {
 private ImageView tv_drag;
 private Button bt_top;
 private Button bt_bottom;
 private WindowManager mWm;
 private int mScreenwidth;
 private int mScreenheight;
 private long[] mhits = new long[2];

 

 @Override
 protected void onCreate(Bundle savedInstanceState) {
  // TODO Auto-generated method stub
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_toast_location);
  initUI();
 }

 

 private void initUI() {
  // 当前可以拖拽的图片控件
  tv_drag = (ImageView) findViewById(R.id.tv_drag);
  bt_top = (Button) findViewById(R.id.bt_top);
  bt_bottom = (Button) findViewById(R.id.bt_bottom);
  mWm = (WindowManager) getSystemService(WINDOW_SERVICE);
  mScreenwidth = mWm.getDefaultDisplay().getWidth();
  mScreenheight = mWm.getDefaultDisplay().getHeight();

 

  int locationX = SpUtil.getInt(getApplicationContext(),
    ConstantValue.LOCATION_X, 0);
  int locationY = SpUtil.getInt(getApplicationContext(),
    ConstantValue.LOCATION_Y, 0);

 

  // 左上坐标作用在控件上面
  // 指定宽高都是w w
  LayoutParams LayoutParams = new RelativeLayout.LayoutParams(
    RelativeLayout.LayoutParams.WRAP_CONTENT,
    RelativeLayout.LayoutParams.WRAP_CONTENT);
  LayoutParams.leftMargin = locationX;
  LayoutParams.topMargin = locationY;
  if (LayoutParams.topMargin > mScreenheight / 2) {
   bt_bottom.setVisibility(View.INVISIBLE);
   bt_top.setVisibility(View.VISIBLE);

 

  } else {
   bt_bottom.setVisibility(View.VISIBLE);
   bt_top.setVisibility(View.INVISIBLE);

 

  }
  // 将以上规则作用在控件上面
  tv_drag.setLayoutParams(LayoutParams);
  tv_drag.setOnClickListener(new OnClickListener() {

 

   @Override
   public void onClick(View arg0) {
    System.arraycopy(mhits, 1, mhits, 0, mhits.length - 1);
    mhits[mhits.length - 1] = SystemClock.uptimeMillis();
    if (mhits[mhits.length - 1] - mhits[0] < 500) {
     // 满足双击事件后，居中
     int left = mScreenwidth / 2 - tv_drag.getWidth() / 2;
     int right = mScreenheight / 2 - tv_drag.getHeight() / 2;
     int top = mScreenwidth / 2 + tv_drag.getWidth() / 2;
     int bottom = mScreenheight / 2 + tv_drag.getHeight() / 2;

 

     // 显示出来
     tv_drag.layout(left, top, right, bottom);

 

    }

 

   }
  });

 

  // 可以拖拽的点击事件
  tv_drag.setOnTouchListener(new OnTouchListener() {

 

   private int startX;
   private int startY;

 

   @Override
   public boolean onTouch(View v, MotionEvent event) {
    switch (event.getAction()) {
    case MotionEvent.ACTION_DOWN:// 按下
     // 初始位置的坐标
     startX = (int) event.getRawX();
     startY = (int) event.getRawY();

 

     break;
    case MotionEvent.ACTION_MOVE:// 移动
     int moveX = (int) event.getRawX();
     int moveY = (int) event.getRawY();

 

     int disX = moveX - startX;
     int disY = moveY - startY;

 

     // 当前控件的上下左右的坐标
     int left = tv_drag.getLeft() + disX;
     int top = tv_drag.getTop() + disY;
     int right = tv_drag.getRight() + disX;
     int bottom = tv_drag.getBottom() + disY;
     // 容错处理
     if (left < 0) {
      return true;
     }

 

     if (right > mScreenwidth) {
      return true;
     }

 

     if (top < 0) {
      return true;
     }

 

     if (bottom > mScreenheight - 22) {
      return true;
     }
     if (top > mScreenheight / 2) {
      bt_bottom.setVisibility(View.INVISIBLE);
      bt_top.setVisibility(View.VISIBLE);

 

     } else {
      bt_bottom.setVisibility(View.VISIBLE);
      bt_top.setVisibility(View.INVISIBLE);

 

     }

 

     // 告知控件，按计算的坐标去展示

 

     tv_drag.layout(left, top, right, bottom);
     // 重置坐标
     startX = (int) event.getRawX();
     startY = (int) event.getRawY();

 

     break;
    case MotionEvent.ACTION_UP:// 抬起
     // 记录位置坐标
     SpUtil.putInt(getApplicationContext(),
       ConstantValue.LOCATION_X, tv_drag.getLeft());
     SpUtil.putInt(getApplicationContext(),
       ConstantValue.LOCATION_Y, tv_drag.getTop());

 

     break;
    }
    // 返回事件,只有触摸操作的时候用true，有点击事件记得加上return false
    return false;
   }
  });
 }
}