Hàm mở task top khi sử dụng PiP

/**
 * Bring up launcher task to front
 */
public static void navToLauncherTask(Context appContext) {
    if (appContext != null && Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
        ActivityManager activityManager = (ActivityManager) 
                appContext.getSystemService(Context.ACTIVITY_SERVICE);
        // iterate app tasks available and navigate to launcher task (browse task)
        if (activityManager != null) {
            final List<ActivityManager.AppTask> appTasks;
            appTasks = activityManager.getAppTasks();
            for (ActivityManager.AppTask task : appTasks) {
                final Intent baseIntent = task.getTaskInfo().baseIntent;
                final Set<String> categories = baseIntent.getCategories();
                if (categories != null && categories.contains(Intent.CATEGORY_LAUNCHER)) {
                    task.moveToFront();
                    return;
                }
            }
        }
    }
}

/**
 * Bring up launcher task to front
 */
fun FragmentActivity?.navToLauncherTask() {
    if (this == null || this.isFinishing) return
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
        val activityManager = (getSystemService(AppCompatActivity.ACTIVITY_SERVICE) as ActivityManager)
        val appTasks = activityManager.appTasks
        for (task in appTasks) {
            val baseIntent = task.taskInfo.baseIntent
            val categories = baseIntent.categories
            if (categories != null && (categories.contains(Intent.CATEGORY_LAUNCHER)
                        || categories.contains(Intent.CATEGORY_DEFAULT))) {
                task.moveToFront()
                return
            }
        }
    }
}

Android: hàm insert danh bạ vào máy (android create new contact programming)

    public static void insertPhoneContact(String displayName, String number, Context context) {

        /*context is App or Activity*/

        ArrayList<ContentProviderOperation> operations = new ArrayList<ContentProviderOperation>();

        int contactIndex = operations.size();

        //Newly Inserted contact

        // A raw contact will be inserted ContactsContract.RawContacts table in contacts database.

        operations.add(ContentProviderOperation.newInsert(ContactsContract.RawContacts.CONTENT_URI)//Step1

                .withValue(ContactsContract.RawContacts.ACCOUNT_TYPE, null)

                .withValue(ContactsContract.RawContacts.ACCOUNT_NAME, null)

                .build());

        //Display name will be inserted in ContactsContract.Data table

        operations.add(ContentProviderOperation.newInsert(ContactsContract.Data.CONTENT_URI)//Step2

                .withValueBackReference(ContactsContract.RawContacts.Data.RAW_CONTACT_ID, contactIndex)

                .withValue(ContactsContract.RawContacts.Data.MIMETYPE, ContactsContract.CommonDataKinds.StructuredName.CONTENT_ITEM_TYPE)

                .withValue(ContactsContract.CommonDataKinds.StructuredName.DISPLAY_NAME, displayName)

                .build());

        //Mobile number will be inserted in ContactsContract.Data table

        operations.add(ContentProviderOperation.newInsert(ContactsContract.Data.CONTENT_URI)//Step 3

                .withValueBackReference(ContactsContract.Data.RAW_CONTACT_ID, contactIndex)

                .withValue(ContactsContract.RawContacts.Data.MIMETYPE, ContactsContract.CommonDataKinds.Phone.CONTENT_ITEM_TYPE)

                .withValue(ContactsContract.CommonDataKinds.Phone.NUMBER, number)

                .withValue(ContactsContract.CommonDataKinds.Phone.TYPE, ContactsContract.CommonDataKinds.Phone.TYPE_MOBILE)

                .build());

        boolean isSuccess = false;

        try {

            // We will do batch operation to insert all above data

            //Contains the output of the app of a ContentProviderOperation.

            //It is sure to have exactly one of uri or count set

            ContentProviderResult[] contentProvider = context.getContentResolver()

                    .applyBatch(ContactsContract.AUTHORITY, operations); //apply above data insertion into contacts list

            Log.e("insertPhoneContact", "result: " + contentProvider);

            isSuccess = contentProvider != null && contentProvider.length > 0;

        } catch (RemoteException e) {

            e.printStackTrace();

        } catch (OperationApplicationException e) {

            e.printStackTrace();

        } catch (Exception e) {

            e.printStackTrace();

        }

        System.out.println("insertPhoneContact displayName: " + displayName + ", number:  " + number + ", isSuccess: " + isSuccess);

    }

Project: vlc-android

https://www.programcreek.com/java-api-examples/?code=xuie0000%2Fvlc-android%2Fvlc-android-master%2F#