Android仿优酷视频的悬浮窗播放

之前接了需求要让视频播放时可以像优酷视频那样在悬浮窗里播放，并且悬浮窗和主播放页面之间要实现无缝切换，项目中使用的是自封装的ijkplayer
这个要求就代表不能在悬浮窗中新建视频控件，所以需要在悬浮窗中复用主页面的视频控件，以达到无缝衔接的效果。

主页面对应的视频控件的父view

 <FrameLayoutandroid:id="@+id/vw_live"android:layout_width="match_parent"android:layout_height="match_parent"android:layout_centerInParent="true"/>

用FrameLayout作为添加视频控件的ParentView，通过addview方法将新建的播放器控件添加到父控件内部

vw_live = new IjkVideoView(this);

video_frame = findViewById(R.id.vw_live);
video_frame.addView(vw_live);

主播放界面的启动模式

播放主界面的activity的启动模式不能为默认，因为我们要保证播放主界面在显示悬浮窗的时候退到后台，但是整个的应用不能退到后台，所以activity的启动模式改为singleInstance

android:launchMode="singleInstance"

退到后台我们通过moveTaskToBack(true)方法;

moveTaskToBack(true);

可以让播放界面退到后台而整个应用不会退回后台

权限请求

要使用悬浮窗需要申请权限

<uses-permission android:name="android.permission.SYSTEM_OVERLAY_WINDOW" />

if (!Settings.canDrawOverlays(this)) {Toast.makeText(this, "当前无权限，请授权", Toast.LENGTH_SHORT);startActivityForResult(new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION, Uri.parse("package:" + getPackageName())), 2);}

悬浮窗

 @SuppressLint("ClickableViewAccessibility")public void showFloatingWindowView(IjkVideoView view) {// 悬浮窗显示视图LayoutInflater layoutInflater = LayoutInflater.from(activity);mShowView = layoutInflater.inflate(R.layout.video_floating_window_layout, null);;// 获取系统窗口管理服务mWindowManager = (WindowManager) activity.getSystemService(Context.WINDOW_SERVICE);// 悬浮窗口参数设置及返回mFloatParams = getParams();//floatingWindow内部控件实例init(view);// 设置窗口触摸移动事件mShowView.setOnTouchListener(new FloatViewMoveListener());// 悬浮窗生成mWindowManager.addView(mShowView, mFloatParams);}private void init(IjkVideoView viewGroup){videoLayout = mShowView.findViewById(R.id.floating_video);videoLayout.removeAllViews();if (viewGroup != null){ijkVideoView = viewGroup;videoLayout.addView(ijkVideoView,new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,ViewGroup.LayoutParams.MATCH_PARENT));}mBtnCloseFloatingWindow = mShowView.findViewById(R.id.close_floating_view);mBtnCloseFloatingWindow.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {}});mBtnBackFloatingWindow = (ImageView)mShowView.findViewById(R.id.back_floating_view);mBtnBackFloatingWindow.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {}});}private WindowManager.LayoutParams getParams() {WindowManager.LayoutParams layoutParams = new WindowManager.LayoutParams();//设置悬浮窗口类型if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {layoutParams.type = WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY;} else {layoutParams.type = WindowManager.LayoutParams.TYPE_SYSTEM_ALERT;}//设置悬浮窗口属性layoutParams.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;//设置悬浮窗口透明layoutParams.format = PixelFormat.TRANSLUCENT;//设置悬浮窗口长宽数据layoutParams.width = 500;layoutParams.height = 340;//设置悬浮窗显示位置layoutParams.gravity = Gravity.START | Gravity.TOP;layoutParams.x = 100;layoutParams.y = 100;return layoutParams;}

悬浮窗的xml，可通过自定义获得自己想要的效果

<FrameLayoutxmlns:android="http://schemas.android.com/apk/res/android"android:id="@+id/floating_video_layout"android:layout_width="match_parent"android:layout_height="match_parent"><FrameLayoutandroid:id="@+id/floating_video"android:layout_width="match_parent"android:layout_height="match_parent"/><ImageViewandroid:id="@+id/close_floating_view"android:layout_width="50dp"android:layout_height="50dp"android:layout_gravity="end"android:padding="10dp"android:src="@android:drawable/ic_menu_close_clear_cancel" /><ImageViewandroid:id="@+id/back_floating_view"android:layout_width="50dp"android:layout_height="50dp"android:padding="10dp"android:src="@android:drawable/ic_menu_revert" />
</FrameLayout>

悬浮窗的滑动，我们可以通过自定义点击监听实现

/*** 浮窗移动/点击监听*/private class FloatViewMoveListener implements View.OnTouchListener {//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;private int mTouchStartY;//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;//判断悬浮窗口是否移动，这里做个标记，防止移动后松手触发了点击事件private boolean isMove;@Overridepublic boolean onTouch(View view, MotionEvent motionEvent) {int action = motionEvent.getAction();int x = (int) motionEvent.getX();int y = (int) motionEvent.getY();switch (action) {case MotionEvent.ACTION_DOWN:isMove = false;mTouchStartX = (int) motionEvent.getRawX();mTouchStartY = (int) motionEvent.getRawY();mStartX = x;mStartY = y;break;case MotionEvent.ACTION_MOVE:int mTouchCurrentX = (int) motionEvent.getRawX();int mTouchCurrentY = (int) motionEvent.getRawY();mFloatParams.x += mTouchCurrentX - mTouchStartX;mFloatParams.y += mTouchCurrentY - mTouchStartY;mWindowManager.updateViewLayout(mShowView, mFloatParams);mTouchStartX = mTouchCurrentX;mTouchStartY = mTouchCurrentY;float deltaX = x - mStartX;float deltaY = y - mStartY;if (Math.abs(deltaX) >= 5 || Math.abs(deltaY) >= 5) {isMove = true;}break;case MotionEvent.ACTION_UP:break;default:break;}//如果是移动事件不触发OnClick事件，防止移动的时候一放手形成点击事件return isMove;}}

悬浮窗的消失，在这里调用videoLayout.removeAllViews()是为了将复用的视频控件的父View清空，返回主播放activity的时候调用addview方法不会再报 child view has Parent,you have to call removeView()的错

public void dismiss() {if (mWindowManager != null && mShowView != null) {videoLayout.removeAllViews();if (mShowView.getParent() != null){mWindowManager.removeView(mShowView);}}}

启动悬浮窗

 public videoFloatingWindow(Context context){super(context);this.activity = context;}

对于悬浮窗的调用

用hasBind来记录是否调用了悬浮窗

   private void startFloatingWindow(){if (!Settings.canDrawOverlays(this)) {Toast.makeText(this, "当前无权限，请授权", Toast.LENGTH_SHORT);startActivityForResult(new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION, Uri.parse("package:" + getPackageName())), 2);} else {video_frame.removeView(vw_live);videoFloatingWindow.getInstance(this).showFloatingWindowView(vw_live);hasBind = true;moveTaskToBack(true);}}

注意

一.由于主界面activity使用了singleInstance启动模式，所以从悬浮窗返回主界面activity时，要添加flag

                Intent intent = new Intent(activity, activity.getClass());intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);activity.startActivity(intent);

二.当主界面的activity退回后台，再重新进入主界面的时候，注意，不再调用onCreate方法，而是调用onNewIntent，所以重写onNewIntent方法，重新进入主界面，悬浮窗消失

  @Overrideprotected void onNewIntent(Intent intent) {super.onNewIntent(intent);Log.d("RemoteView", "重新显示了");//不显示悬浮框if (hasBind){videoFloatingWindow.getInstance(this).dismiss();video_frame.removeAllViews();if (vw_live != null){video_frame.addView(vw_live);}hasBind = false;}}