android桌面悬浮窗显示录屏时间控制效果

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
 android:layout_width="wrap_content" 
 android:layout_height="wrap_content"> 
 <LinearLayout 
  android:layout_width="wrap_content" 
  android:layout_height="wrap_content" 
  android:background="@drawable/corners_bg" 
  android:paddingBottom="3dp" 
  android:paddingTop="3dp" 
  android:paddingLeft="15dp" 
  android:paddingRight="8dp" 
  android:layout_gravity="center" 
  android:gravity="center" 
  android:orientation="horizontal"> 
  <TextView 
   android:id="@+id/record_time" 
   android:layout_width="wrap_content" 
   android:layout_height="wrap_content" 
   android:text="00:00" 
   android:textColor="#ffffff" 
   android:textSize="10dp" /> 
  <View 
   android:layout_width="2dp" 
   android:layout_height="match_parent" 
   android:layout_marginLeft="5dp" 
   android:layout_marginRight="5dp" 
   android:textColor="#ffffff" /> 
  <LinearLayout 
   android:id="@+id/stop_record" 
   android:layout_width="wrap_content" 
   android:layout_height="wrap_content" 
   android:layout_gravity="center" 
   android:gravity="center" 
   android:orientation="horizontal"> 
   <ImageView 
    android:id="@+id/record_hint_button" 
    android:layout_width="10dp" 
    android:layout_height="10dp" 
    android:layout_marginRight="5dp" 
    android:background="#FF4040" /> 
   <TextView 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:text="结束" 
    android:textColor="#ffffff" 
    android:textSize="10dp" /> 
  </LinearLayout> 
 </LinearLayout> 
</LinearLayout> 

package com.android.systemui; 
import android.annotation.TargetApi; 
import android.app.Service; 
import android.content.Context; 
import android.content.Intent; 
import android.os.Binder; 
import android.os.Build; 
import android.os.Environment; 
import android.os.Handler; 
import android.os.IBinder; 
import android.os.Looper; 
import android.os.Message; 
import android.support.annotation.RequiresApi; 
import android.view.animation.AlphaAnimation; 
import android.view.animation.Animation; 
import android.view.animation.LinearInterpolator; 
import android.graphics.PixelFormat; 
import android.view.GestureDetector; 
import android.view.GestureDetector.SimpleOnGestureListener; 
import android.view.Gravity; 
import android.view.LayoutInflater; 
import android.view.MotionEvent; 
import android.view.View; 
import android.widget.LinearLayout; 
import android.widget.TextView; 
import android.view.View.OnTouchListener; 
import android.view.WindowManager; 
import android.view.WindowManager.LayoutParams; 
import android.widget.ImageButton; 
import android.widget.ImageView; 
import android.widget.LinearLayout; 
import android.widget.Toast; 
import com.android.systemui.R; 
import android.util.Log; 
import java.io.File; 
import java.io.IOException; 
public class ScreenRecordService extends Service implements Handler.Callback { 
 private final String TAG = "ScreenRecordService"; 
 private Handler mHandler; 
 //已经录制多少秒了 
 private int mRecordSeconds = 0; 
 private static final int MSG_TYPE_COUNT_DOWN = 110; 
 /** 
  * 定义浮动窗口布局 
  */ 
 LinearLayout mlayout; 
 TextView recordTime; 
 /** 
  * 悬浮窗控件 
  */ 
 ImageView recordHintButton; 
 LinearLayout stopRecord; 
 /** 
  * 悬浮窗的布局 
  */ 
 WindowManager.LayoutParams wmParams; 
 LayoutInflater inflater; 
 /** 
  * 创建浮动窗口设置布局参数的对象 
  */ 
 WindowManager mWindowManager; 
 //触摸监听器 
 GestureDetector mGestureDetector; 
 FloatingListener mFloatingListener; 
 @Override 
 public void onCreate() { 
  super.onCreate(); 
  initWindow();//设置窗口的参数 
  initFloating();//设置悬浮窗图标 
 } 
 @Override 
 public void onDestroy() { 
  super.onDestroy(); 
  try { 
   if (mlayout != null) { 
    // 移除悬浮窗口 
    mWindowManager.removeView(mlayout); 
   } 
  } catch (Exception e) { 
   Log.e(TAG, "not attached to window manager"); 
  } 
 } 
 @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP) 
 @Override 
 public boolean handleMessage(Message msg) { 
  switch (msg.what) { 
   case MSG_TYPE_COUNT_DOWN: { 
    mRecordSeconds++; 
    int minute = 0, second = 0; 
    if (mRecordSeconds >= 60) { 
     minute = mRecordSeconds / 60; 
     second = mRecordSeconds % 60; 
    } else { 
     second = mRecordSeconds; 
    } String timeTip = ""+minute+":"+second; 
    recordTime.setText(timeTip); 
   } 
    break; 
   } 
  } 
  return true; 
 } 
 /** 
  * 初始化windowManager 
  */ 
 private void initWindow() { 
  if (mWindowManager == null) { 
   mWindowManager = (WindowManager) getApplication().getSystemService(Context.WINDOW_SERVICE); 
  } 
  wmParams = getParams(wmParams);//设置好悬浮窗的参数 
  // 悬浮窗默认显示以左上角为起始坐标 
  wmParams.gravity = Gravity.LEFT | Gravity.TOP; 
  //悬浮窗的开始位置，因为设置的是从左上角开始，所以屏幕左上角是x=0;y=0 
  wmParams.x = 0; 
  wmParams.y = 0; 
  //得到容器，通过这个inflater来获得悬浮窗控件 
  if (inflater == null) { 
   inflater = LayoutInflater.from(getApplication()); 
  } 
  // 获取浮动窗口视图所在布局 
  if (mlayout == null) { 
   mlayout = (LinearLayout) inflater.inflate(R.layout.record_screen_time_float, null); 
  } 
  // 添加悬浮窗的视图 
  mWindowManager.addView(mlayout, wmParams); 
 } 
 /** 
  * 对windowManager进行设置 
  * 
  * @param wmParams 
  * @return 
  */ 
 public WindowManager.LayoutParams getParams(WindowManager.LayoutParams wmParams) { 
  if (wmParams == null) { 
   wmParams = new WindowManager.LayoutParams(); 
  } 
  //设置window type 下面变量2002是在屏幕区域显示，2003则可以显示在状态栏之上 
  //wmParams.type = LayoutParams.TYPE_PHONE; 
  //wmParams.type = LayoutParams.TYPE_SYSTEM_ALERT; 
  wmParams.type = LayoutParams.TYPE_SYSTEM_ERROR; 
  //设置图片格式，效果为背景透明 
  wmParams.format = PixelFormat.RGBA_8888; 
  //设置浮动窗口不可聚焦（实现操作除浮动窗口外的其他可见窗口的操作） 
  //wmParams.flags = LayoutParams.FLAG_NOT_FOCUSABLE; 
  //设置可以显示在状态栏上 
  wmParams.flags = WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE | WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL | 
    WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN | WindowManager.LayoutParams.FLAG_LAYOUT_INSET_DECOR | 
    WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH; 
  //设置悬浮窗口长宽数据 
  wmParams.width = WindowManager.LayoutParams.WRAP_CONTENT; 
  wmParams.height = WindowManager.LayoutParams.WRAP_CONTENT; 
  return wmParams; 
 } 
 /** 
  * 找到悬浮窗的图标，并且设置事件 
  * 设置悬浮窗的点击、滑动事件 
  */ 
 private void initFloating() { 
  recordTime = (TextView) mlayout.findViewById(R.id.record_time); 
  recordHintButton = (ImageView) mlayout.findViewById(R.id.record_hint_button); 
  setFlickerAnimation(recordHintButton); 
  stopRecord = (LinearLayout) mlayout.findViewById(R.id.stop_record); 
  mlayout.setOnClickListener(new View.OnClickListener() { 
   @Override 
   public void onClick(View v) { 
    Log.d(TAG, "OnClickListener"); 
    ScreenUtil.stopScreenRecord(ScreenRecordService.this); 
   } 
  }); 
  if (mGestureDetector == null) { 
   mGestureDetector = new GestureDetector(this, new MyOnGestureListener()); 
  } 
  if(mFloatingListener == null){ 
   //设置监听器 
   mFloatingListener = new FloatingListener(); 
  } 
  mlayout.setOnTouchListener(mFloatingListener); 
  stopRecord.setOnTouchListener(mFloatingListener); 
 } 
/× 
 ×录屏状态显示（闪烁效果） 
 ×/ 
 private void setFlickerAnimation(ImageView iv_chat_head) { 
  final Animation animation = new AlphaAnimation(1, 0); // Change alpha from fully visible to invisible 
  animation.setDuration(500); // duration - half a second 
  animation.setInterpolator(new LinearInterpolator()); // do not alter animation rate 
  animation.setRepeatCount(Animation.INFINITE); // Repeat animation infinitely 
  animation.setRepeatMode(Animation.REVERSE); // 
  iv_chat_head.setAnimation(animation); 
 } 
 //开始触控的坐标，移动时的坐标（相对于屏幕左上角的坐标） 
 private int mTouchStartX, mTouchStartY, mTouchCurrentX, mTouchCurrentY; 
 //开始时的坐标和结束时的坐标（相对于自身控件的坐标） 
 private int mStartX, mStartY, mStopX, mStopY; 
 private boolean isMove;//判断悬浮窗是否移动 
 /** 
  * 悬浮窗监听器 
  */ 
 private class FloatingListener implements OnTouchListener { 
  @Override 
  public boolean onTouch(View arg0, MotionEvent event) { 
   int action = event.getAction(); 
   switch (action) { 
    case MotionEvent.ACTION_DOWN: 
     isMove = false; 
     mTouchStartX = (int) event.getRawX(); 
     mTouchStartY = (int) event.getRawY(); 
     mStartX = (int) event.getX(); 
     mStartY = (int) event.getY(); 
     break; 
    case MotionEvent.ACTION_MOVE: 
     mTouchCurrentX = (int) event.getRawX(); 
     mTouchCurrentY = (int) event.getRawY(); 
     wmParams.x += mTouchCurrentX - mTouchStartX; 
     wmParams.y += mTouchCurrentY - mTouchStartY; 
     if (mlayout != null) { 
      mWindowManager.updateViewLayout(mlayout, wmParams); 
     } 
     mTouchStartX = mTouchCurrentX; 
     mTouchStartY = mTouchCurrentY; 
     break; 
    case MotionEvent.ACTION_UP: 
     mStopX = (int) event.getX(); 
     mStopY = (int) event.getY(); 
     if (Math.abs(mStartX - mStopX) >= 1 || Math.abs(mStartY - mStopY) >= 1) { 
      isMove = true; 
     } 
     break; 
   } 
   return mGestureDetector.onTouchEvent(event); //此处必须返回false，否则OnClickListener获取不到监听 
  } 
 } 
 /** 
  * 自定义的手势监听类 
  */ 
 class MyOnGestureListener extends SimpleOnGestureListener { 
  @Override 
  public boolean onSingleTapConfirmed(MotionEvent e) { 
   if (!isMove) { 
    System.out.println("onclick"); 
   } 
   return super.onSingleTapConfirmed(e); 
  } 
 } 
}