Picture-In-Picture 画中画模式

此代码为项目中使用，封装了PlayerView，相关进入PIP模式的代码也是在PlayerView中

准备工作

AndroidManifest.xml 中，在对应的Activity下添加：

android:supportsPictureInPicture="true"
android:launchMode="singleTask"
android:configChanges="screenLayout|orientation"

准备进入PIP模式

Android 8.0 Oreo（API Level 26）允许活动启动画中画 Picture-in-picture（PIP）模式，因此开启前需要对当前版本进行判断。
内存较低的设备可能无法开启PIP，hasSystemFeature(PackageManager. FEATURE_PICTURE_IN_PICTURE) 用来检查以确保可以使用PIP。

 //PlayerView中点击PIP按钮进入PIP模式@Overridepublic void onPipModeClick() {enterPipModel(context);}private PictureInPictureParams.Builder build;public void enterPipModel(Context context) {if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O&& getContext().getPackageManager().hasSystemFeature(PackageManager.FEATURE_PICTURE_IN_PICTURE)) {AppOpsManager appOpsManager = (AppOpsManager) context.getSystemService(Context.APP_OPS_SERVICE);Activity activity = getActivity(getContext());//Android 10+ 关闭PIP权限后，此处调用checkOp检查会报错if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {if (AppOpsManager.MODE_ALLOWED == appOpsManager.unsafeCheckOpNoThrow(AppOpsManager.OPSTR_PICTURE_IN_PICTURE,context.getApplicationInfo().uid, context.getPackageName())) {buildPIP(activity);} else {showNoPIPPermission(context, activity);}} else {if (AppOpsManager.MODE_ALLOWED == appOpsManager.checkOp(AppOpsManager.OPSTR_PICTURE_IN_PICTURE,context.getApplicationInfo().uid, context.getPackageName())) {buildPIP(activity);} else {showNoPIPPermission(context, activity);}}}}/*** 创建PIP Build** @param activity*/private void buildPIP(Activity activity) {//这里宽高比例写死为16:9，也可用播放器view的宽高build.setAspectRatio(new Rational(16, 9));Rect rect = new Rect();getGlobalVisibleRect(rect);build.setSourceRectHint(rect);//进入PIPactivity.enterPictureInPictureMode(build.build());//对播放器控制view的隐藏playerControlView.forceControlWidgetGone();//回复播放resumePlay();}/*** 提示PIP无权限并且跳转到设置界面** @param context* @param activity*/private void showNoPIPPermission(Context context, Activity activity) {Toast.makeText(context, R.string.player_view_pip_permissions_tips, Toast.LENGTH_LONG).show();try {Intent intent = new Intent("android.settings.PICTURE_IN_PICTURE_SETTINGS", Uri.parse("package:" + activity.getPackageName()));context.startActivity(intent);} catch (Exception e) {e.printStackTrace();}}

PIP模式更新自定义Action

项目需求是暂停、恢复播放、快进15s、快退15s，因此需要在播放器播放、暂停时调用此方法更新PIP模式按钮状态

     //播放视频时，按钮为暂停样式updatePictureInPictureActions(R.drawable.exo_icon_pause,getActivity(getContext()).getString(R.string.cast_pause),PIPControlUtils.CONTROL_TYPE_PAUSE, PIPControlUtils.CONTROL_PAUSE_REQUEST_CODE);//暂停播放时，按钮为播放样式updatePictureInPictureActions(R.drawable.exo_icon_play,getActivity(getContext()).getString(R.string.cast_pause),PIPControlUtils.CONTROL_TYPE_PLAY, PIPControlUtils.CONTROL_PLAY_REQUEST_CODE);

    /*** Update the state of pause/resume/fastforward/rewind action item in Picture-in-Picture mode.** @param iconId      暂停、播放icon id* @param title       action 标题* @param controlType action 类型* @param requestCode PendingIntent 请求码*/void updatePictureInPictureActions(@DrawableRes int iconId, String title, int controlType, int requestCode) {//Android 8.0+if (Build.VERSION.SDK_INT < Build.VERSION_CODES.O) return;//最终PIP模式下自定义按钮的顺序与添加进actions的action顺序相同int flags = PendingIntent.FLAG_UPDATE_CURRENT;if (BuildCompat.isAtLeastS()) {//Android 12 以上需要再添加PendingIntent.FLAG_MUTABLE，否则内部方法checkFlag()会报错flags |= PendingIntent.FLAG_MUTABLE;}final ArrayList<RemoteAction> actions = new ArrayList<>();//暂停、恢复播放的PendingIntentfinal PendingIntent pausePlayIntent =PendingIntent.getBroadcast(getActivity(getContext()),requestCode,new Intent(PIPControlUtils.ACTION_MEDIA_CONTROL).putExtra(PIPControlUtils.EXTRA_CONTROL_TYPE, controlType),flags);//快进的PendingIntentfinal PendingIntent fastForwardIntent =PendingIntent.getBroadcast(getActivity(getContext()),PIPControlUtils.CONTROL_FAST_FORWARD_REQUEST_CODE,new Intent(PIPControlUtils.ACTION_MEDIA_CONTROL).putExtra(PIPControlUtils.EXTRA_CONTROL_TYPE, PIPControlUtils.CONTROL_TYPE_FAST_FORWARD),flags);//快退的PendingIntentfinal PendingIntent rewindIntent =PendingIntent.getBroadcast(getActivity(getContext()),PIPControlUtils.CONTROL_REWIND_REQUEST_CODE,new Intent(PIPControlUtils.ACTION_MEDIA_CONTROL).putExtra(PIPControlUtils.EXTRA_CONTROL_TYPE, PIPControlUtils.CONTROL_TYPE_REWIND),flags);/*** 快退按钮的action*/RemoteAction rewindAction = new RemoteAction(Icon.createWithResource(getActivity(getContext()), R.drawable.ic_rewind_15),"rewind","rewind",rewindIntent);// RemoteAction.setEnabled(boolean); 设置action是否可用，传false则icon变成灰色且不可点击actions.add(rewindAction);/*** 暂停播放按钮的action*/final Icon icon = Icon.createWithResource(getActivity(getContext()), iconId);actions.add(new RemoteAction(icon, title, title, pausePlayIntent));/*** 快进按钮的action*/RemoteAction fastForwardAction = new RemoteAction(Icon.createWithResource(getActivity(getContext()), R.drawable.ic_fast_forward_15),"fast_forward","fast_forward",fastForwardIntent);// setEnabled() -> 可切换action对应的icon是否可用，不可用则为灰色切不能点击actions.add(fastForwardAction);//设置已自定义的actionsbuild.setActions(actions);//设置画中画参数getActivity(getContext()).setPictureInPictureParams(build.build());}

对应的Activity

生命周期：
进入PIP模式：onPause()
从PIP模式回复全屏：onResume()
关闭PIP模式：onStop()
PIP模式下锁屏/解锁：onStop() / onStart()

 //是否进入PIP模式private var isEnteredPIPMode = false//复写finish()方法override fun finish() {finishAndRemoveTask()}override fun onPictureInPictureModeChanged(isInPictureInPictureMode: Boolean,newConfig: Configuration?) {//进入PIP时，会调用onPause()，此时lifecycle.currentState 变为Lifecycle.State.STARTED//退出PIP时，会调用onStop()，此时lifecycle.currentState 变为Lifecycle.State.CREATED，即可做finish Activity的操作//STARTED->:after onStart call;right before onPause call.//CREATED->:after onCreate call;right before onStop call.if (lifecycle.currentState == Lifecycle.State.CREATED) {if (null != mReceiver){unregisterReceiver(mReceiver)mReceiver = null}finish()}super.onPictureInPictureModeChanged(isInPictureInPictureMode, newConfig)isEnteredPIPMode = isInPictureInPictureModeif (isInPictureInPictureMode) {//进入PIP模式后，注册广播接收器以接受自定义ActionregisterBroadcast()}else{if (null != mReceiver){//退出PIP模式后，注销广播接收器，将mReceiver置空unregisterReceiver(mReceiver)mReceiver = null}}}//注册广播接收器private fun registerBroadcast(){mReceiver = object : BroadcastReceiver() {override fun onReceive(context: Context, intent: Intent) {//当前Activity只需要接受来自PIP 自定义Action发出的广播if (PIPControlUtils.ACTION_MEDIA_CONTROL != intent.action) {return}//获取PIP控制类型var controlType = intent.getIntExtra(PIPControlUtils.EXTRA_CONTROL_TYPE,PIPControlUtils.CONTROL_TYPE_PLAY)when (controlType) {//暂停-> 播放PIPControlUtils.CONTROL_TYPE_PLAY -> //播放事件//播放-> 暂停PIPControlUtils.CONTROL_TYPE_PAUSE -> //暂停事件//快进PIPControlUtils.CONTROL_TYPE_FAST_FORWARD -> //快进事件//快退PIPControlUtils.CONTROL_TYPE_REWIND -> //快退事件}}}registerReceiver(mReceiver, IntentFilter(PIPControlUtils.ACTION_MEDIA_CONTROL))}override fun onStop() {super.onStop()if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {/*** isInPictureInPictureMode -> false，画中画模式时点了关闭按钮调用的onStop* 注意：Android 12版本退出PIP模式时isInPictureInPictureMode未变成false* 因此在onPictureInPictureModeChanged()方法里去判断是不是退出PIP模式*///isInPictureInPictureMode -> true，画中画模式时息屏调用的onStopif (isInPictureInPictureMode) {//此处可以处理进入PIP模式后息屏下是否需要暂停}}}

PIPControlUtils

class PIPControlUtils {companion object {//PendingIntent actionconst val ACTION_MEDIA_CONTROL = "media_control"//PendingIntent extra nameconst val EXTRA_CONTROL_TYPE = "control_type"//PendingIntent extra resume playconst val CONTROL_TYPE_PLAY = 0x800//PendingIntent extra pauseconst val CONTROL_TYPE_PAUSE = 0x801//PendingIntent extra fast forwardconst val CONTROL_TYPE_FAST_FORWARD= 0x802//PendingIntent extra rewindconst val CONTROL_TYPE_REWIND = 0x803//Fast forward time millisconst val FAST_FORWARD_TIME = 15 * 1000//Rewind time millisconst val REWIND_TIME = 15 * 1000//PendingIntent play request codeconst val CONTROL_PLAY_REQUEST_CODE = 0x800//PendingIntent pause request codeconst val CONTROL_PAUSE_REQUEST_CODE = 0x801//PendingIntent fast forward request codeconst val CONTROL_FAST_FORWARD_REQUEST_CODE = 0x802//PendingIntent rewind request codeconst val CONTROL_REWIND_REQUEST_CODE = 0x803}
}

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Picture-In-Picture 画中画模式

Picture-In-Picture 画中画模式

准备工作

准备进入PIP模式

PIP模式更新自定义Action

对应的Activity

PIPControlUtils

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