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当传入呼叫活动置于后台时返回呼叫UI

call notifications android-intent android

-2

Kalu Khan Luhar · 技术社区 · 6 年前

我正在开发一个自定义呼叫应用程序,当用户在传入呼叫期间将应用程序放在后台时,我必须在其中放置一个UI。我正在显示通知,但我的IncomingCallActivity未恢复。是否可以在传入呼叫期间在所有应用程序上放置一个UI“返回呼叫”?

通知代码如下:

private void createNotification() { 
    // Create an explicit intent for an Activity in your app
    Intent intent = new Intent(this, IncomingCallActivity.class);
    intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);
    PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent, 0);

    NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(this, CHANNEL_ID)
            .setSmallIcon(R.drawable.pref_noti_icon)
            .setContentTitle(this.getResources().getString(R.string.app_name))
            .setContentText(this.getResources().getString(R.string.notification_return_to_call))
            .setPriority(NotificationCompat.PRIORITY_DEFAULT)
            // Set the intent that will fire when the user taps the notification
            .setContentIntent(pendingIntent)
            .setAutoCancel(true);

    NotificationManagerCompat notificationManager = NotificationManagerCompat.from(this);


    notificationManager.notify(NOTIFICATION_ID, mBuilder.build());
}

1 回复 | 直到 6 年前

Kalu Khan Luhar 6 年前

我通过如下更新代码解决了问题:

@Override
public void onPause() {
    super.onPause();
    if (!isNotificationShown)
    createNotification();
}

@Override
public void onResume() {
    super.onResume();
    if (isNotificationShown) {
        clearNotification();
    }
}

@Override
public void onDestroy() {
    super.onDestroy();
        clearNotification();
}

//Create Notification
private void createNotification() {
    isNotificationShown = true;
    createNotificationChannel();
    // Create an explicit intent for an Activity in your app
    Intent intent = new Intent(IncomingCallActivity.this, IncomingCallActivity.class);
    intent.setAction(Intent.ACTION_MAIN);
    intent.addCategory(Intent.CATEGORY_LAUNCHER);
    intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent, 0);

    NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(this, CHANNEL_ID)
            .setSmallIcon(R.drawable.pref_noti_icon)
            .setContentTitle(this.getResources().getString(R.string.app_name))
            .setContentText(this.getResources().getString(R.string.notification_return_to_call))
            .setPriority(NotificationCompat.PRIORITY_DEFAULT)
            // Set the intent that will fire when the user taps the notification
            .setContentIntent(pendingIntent)
            .setAutoCancel(true);

    NotificationManagerCompat notificationManager = NotificationManagerCompat.from(this);
    notificationManager.notify(NOTIFICATION_ID, mBuilder.build());
}

private void clearNotification() {
    isNotificationShown = false;
    NotificationManager notificationManager = (NotificationManager) getApplicationContext().getSystemService(Context.NOTIFICATION_SERVICE);
    if (notificationManager!=null)
    notificationManager.cancel(NOTIFICATION_ID);
}

也不要忘记设置 android:launchMode="singleTop" 属于活动在里面 AndroidManifest。xml 文件