Android 系统录制屏幕

如果依赖版本是Android Q之后的版本，系统录制屏幕的方法需要有所变动：

1、需要将onActivityResult中返回的resultcode和data传给service，然后在service中获取MediaProjcection

MediaProjection mediaProjection = ScreenRecorderCtrl.getInstance().getProjectionManager().getMediaProjection(resultcode, data)

2、Mainfest对应service中添加如下属性

    android:enabled="true"
    android:foregroundServiceType="mediaProjection"

3、Service中onStartCommand中需要设置通知，该方法要在MediaProjection初始化之前

/**
 * 添加一个状态栏通知
 */
private void addNotification(){

    NotificationManager manager = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);
    if(Build.VERSION.SDK_INT >= 26)
    {
        //当sdk版本大于26
        String id = "screenrecord";
        String description = "143";
        int importance = NotificationManager.IMPORTANCE_HIGH;
        NotificationChannel channel = new NotificationChannel(id, description, importance);
        manager.createNotificationChannel(channel);
        Notification notification = new Notification.Builder(this, id)
                .setCategory(Notification.CATEGORY_MESSAGE)
                .setSmallIcon(R.drawable.recoding)
                .setContentTitle("录屏服务 ")
                .setContentText("进行中")
                .setAutoCancel(false)
                .build();
        startForeground(1,notification);
    }
    else
    {
        Notification notification = new Notification.Builder(this)
                .setContentTitle("录屏服务 ")
                .setContentText("进行中")
                .setSmallIcon(R.drawable.recoding)
                .build();
        startForeground(1, notification);
    }
}

4、Service启动的时候

Intent service = new Intent(this, ScreenRecorderService.class);
service.putExtra("code", resultcode);//onactivityresult返回值
service.putExtra("data", data);//onactivityresult 返回值
if (android.os.Build.VERSION.SDK_INT <=26) {
    startService(service);
}else {
    startForegroundService(service);
}