Code Summary:
NotificationCompat.Builder notification;
NotificationManager manager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
...
int importance = NotificationManager.IMPORTANCE_HIGH;
NotificationChannel channel = new NotificationChannel(CHANNEL_ID, CHANNEL_TITLE, importance);
manager.createNotificationChannel(channel);
notification.setChannelId(CHANNEL_ID);
manager.notify(notificationId, 0, notification.build());
manager.getImportance() returns always 3(IMPORTANCE_DEFAULT).
How can I change importance?
Once you submit the channel to the NotificationManager, you cannot
change the importance level. However, the user can change their
preferences for your app's channels at any time.
https://developer.android.com/training/notify-user/channels
The solution is to guide user to notification settings and allow him to modify your channel. To open a channel in android settings there is an intent:
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
final Intent intent = new Intent(Settings.ACTION_CHANNEL_NOTIFICATION_SETTINGS);
intent.putExtra(Settings.EXTRA_APP_PACKAGE, getActivity().getPackageName());
intent.putExtra(Settings.EXTRA_CHANNEL_ID, channelID);
if (intent.resolveActivity(getActivity().getPackageManager()) != null) {
startActivity(intent);
} else {
Toast.makeText(getActivity(), R.string.not_found, Toast.LENGTH_LONG).show();
}
}
Another solution is to create a new channel and use that channel but user always sees all channels that you have created in Android Settings
Related
So I am a beginner and I was following one tutorial on how to make notification in Android Studio. This app should make a notification when you press a button, but instead of making notification it shows up a Developer Warning
Error:
No Channel found for pkg=com.example.myapplication, channelId=My notification, id=1, tag=null, opPkg=com.example.myapplication, callingUid=10153, userId=0, incomingUserId=0, notificationUid=10153, notification=Notification(channel=My notification shortcut=null contentView=null vibrate=null sound=null defaults=0x0 flags=0x10 color=0x00000000 vis=PRIVATE)
Code(Java):
public void onClick(View v) {
NotificationCompat.Builder builder = new NotificationCompat.Builder(MainActivity.this,"My notification");
builder.setContentTitle("My Title");
builder.setContentText("Test");
builder.setSmallIcon(R.drawable.ic_launcher_background);
builder.setAutoCancel(true);
NotificationManagerCompat managerCompat = NotificationManagerCompat.from(MainActivity.this);
managerCompat.notify(null,0, builder.build());
}
});
Do you know how to fix this?
Starting with Android 8.0 (API level 26), notifications require a notification channel.
This is a category which you create and assign to your notifications. Having multiple notification channels per app, allows users to better manage which kind of notifications they want to receive from an app.
To achieve this, you need to create a notification channel as stated in the example in the Android docs:
private void createNotificationChannel() {
// Create the NotificationChannel, but only on API 26+ because
// the NotificationChannel class is new and not in the support library
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
CharSequence name = getString(R.string.channel_name);
String description = getString(R.string.channel_description);
int importance = NotificationManager.IMPORTANCE_DEFAULT;
NotificationChannel channel = new NotificationChannel(CHANNEL_ID, name, importance);
channel.setDescription(description);
// Register the channel with the system; you can't change the importance
// or other notification behaviors after this
NotificationManager notificationManager = getSystemService(NotificationManager.class);
notificationManager.createNotificationChannel(channel);
}
}
Source
CHANNEL_ID can be any integer number which doesn't change during the lifetime of your app. It is OK if you make it a static final int.
Once you created the channel, you can specify the same CHANNEL_ID when creating notifications:
NotificationCompat.Builder builder = new NotificationCompat.Builder(this, CHANNEL_ID)
.setSmallIcon(R.drawable.notification_icon)
.setContentTitle(textTitle)
.setContentText(textContent)
.setPriority(NotificationCompat.PRIORITY_DEFAULT);
Source
private Notification getNotification() {
Intent notificationIntent = new Intent(this, VideoExportActivity.class);
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, notificationIntent, 0);
NotificationChannel notificationChannel = null;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
notificationChannel = new NotificationChannel("CHANNEL_ID", "Alarm Time....", NotificationManager.IMPORTANCE_DEFAULT);
}
NotificationManager notificationManager = null;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
notificationManager = getSystemService(NotificationManager.class);
}
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
notificationManager.createNotificationChannel(notificationChannel);
}
return new NotificationCompat.Builder(this, "CHANNEL_ID")
.setContentTitle("Title")
.setContentText("Your Message")
.setSmallIcon(R.drawable.ic_launcher_foreground)
.setContentIntent(pendingIntent)
.build();
}
Notification notification = getNotification();
I literally have tried everything seriously every method and every snippet but still, I was not able to show heads-up notifications on Chinese brand devices.
so yesterday I thought why not try it again but after all again still I'm not able to show heads-up notification until I manually goto the app into the settings and give floating permission for the app.
Now most of you may say why not to navigate the user to the setting when he/she first opens up the app but nobody likes that even there are other apps (I'm not talking about white list app like WhatsApp) which have 10K downloads are able to show heads up notification
Here is my code, btw I have tried setting the sound, vibration, and light but still heads up are not showing, and yes I do uninstall my app after every build
public void showNotification(View v){
if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.O){
NotificationChannel nc = new NotificationChannel("n","pop up notification", NotificationManager.IMPORTANCE_HIGH);
nc.enableLights(true);
nc.setLightColor(Color.BLUE);
nc.enableVibration(true);
nc.setLockscreenVisibility(Notification.VISIBILITY_PUBLIC);
NotificationManager nm = getSystemService(NotificationManager.class);
nm.createNotificationChannel(nc);
}
Notification.Builder notification = null;
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
notification = new Notification.Builder(this,"n")
.setContentTitle("Pop up notification")
.setSmallIcon(R.drawable.ic_launcher_background);
}else{
notification = new Notification.Builder(this)
.setContentTitle("Pop up notification")
// .setPriority(Notification.PRIORITY_MAX)
.setSmallIcon(R.drawable.ic_launcher_background);
}
NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
notificationManager.notify(1,notification.build());
}
I have two solutions. Try them out and see if any works.
Yours actually works Like this
public void showNotification(){
if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.O){
NotificationChannel nc = new NotificationChannel("n","pop up notification", NotificationManager.IMPORTANCE_HIGH);
nc.enableLights(true);
nc.setLightColor(Color.BLUE);
nc.enableVibration(true);
nc.setLockscreenVisibility(Notification.VISIBILITY_PUBLIC);
NotificationManager nm = getSystemService(NotificationManager.class);
nm.createNotificationChannel(nc);
}
Notification.Builder notification = null;
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
notification = new Notification.Builder(this,"n")
.setContentTitle("Pop up notification")
.setSmallIcon(R.drawable.alex);
}else{
notification = new Notification.Builder(this)
.setContentTitle("Pop up notification")
//.setPriority(Notification.PRIORITY_MAX)
.setSmallIcon(R.drawable.alex);
}
NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
notificationManager.notify(1,notification.build());
Mine notifyUser("Order Delivery", "Your order has arrived"):
public void notifyUser(String title, String text){
NotificationCompat.Builder builder = new NotificationCompat.Builder(this, "notify_001");
Intent intent = new Intent(this, ActivityToOpenWhenNotificationIsTapped.class);
intent.setAction("android.intent.action.MAIN");
intent.addCategory("android.intent.category.LAUNCHER");
intent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT);
intent.addFlags(Intent.FLAG_ACTIVITY_FORWARD_RESULT);
PendingIntent activity = PendingIntent.getActivity(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
NotificationCompat.BigTextStyle bigTextStyle = new NotificationCompat.BigTextStyle();
bigTextStyle.setBigContentTitle(title);
bigTextStyle.bigText(text);
bigTextStyle.setSummaryText("Big summary text. Comment if you want.");
builder.setAutoCancel(true);
builder.setContentIntent(activity);
builder.setContentTitle(title);
builder.setContentText(text);
builder.setPriority(1);
builder.setSmallIcon(R.drawable.alex);
builder.setLargeIcon(BitmapFactory.decodeResource(this.getResources(), R.drawable.alex));
builder.setStyle(bigTextStyle);
builder.setAutoCancel(true);
builder.setSound(Settings.System.DEFAULT_NOTIFICATION_URI);
builder.setGroup("Pixels");
Notification build = builder.build();
build.flags |= 16;
NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
if (Build.VERSION.SDK_INT >= 26) {
String str3 = "Pixels_V1.0";
notificationManager.createNotificationChannel(new NotificationChannel(str3, "Pixels Notification", NotificationManager.IMPORTANCE_DEFAULT));
builder.setChannelId(str3);
}
int NOTIFICATION_ID = new Random(System.currentTimeMillis()).nextInt(1000);
notificationManager.notify(NOTIFICATION_ID, builder.build());
}
I have a simple notification which works for me on older androids. But this same notification doesnt pop up on my phone with android oreo. I read that i need to assign channel with notification, which i did. But still, it doesnt pop up.
Thanks
My code -
String CHANNEL_ID = "my_channel_01";
String name = "notification";
int importance = NotificationManager.IMPORTANCE_HIGH;
NotificationChannel mChannel = new NotificationChannel(CHANNEL_ID, name, importance);
NotificationManager mManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
Notification notification = new Notification.Builder(this,CHANNEL_ID)
.setContentTitle("New Message")
.setContentText("You've received new messages.")
.setSmallIcon(R.drawable.common_google_signin_btn_icon_dark)
.setChannelId(CHANNEL_ID)
.build();
I think you are missing mManager.createNotificationChannel(mChannel);
I'm new to Android programming and I'm trying to build my first app. Right now I want to send local notifications. Unfortunately I cannot receive notifications on devices running API 28 and above. I know there is a change in the way notifications are sent since Oreo and I have included code that creates the channel. It seems like if I run the app on a simulator with a lower API (e.g. 19) the notification is received. Also if I copy my code into a new project I receive the notifications, even on a simulator running Android Oreo. What settings in the project could cause notifications not to be received on Android Oreo? (There are no errors in Logcat)
My code for sending the notifications:
public static final String CHANNEL_1_ID = "channel1";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
createNotificationChannels();
}
public void setNotif(View view) {
Notification notification = new NotificationCompat.Builder(this, CHANNEL_1_ID)
.setSmallIcon(R.mipmap.ic_launcher)
.setContentTitle("hey")
.setContentText("world")
.setPriority(NotificationCompat.PRIORITY_HIGH)
.build();
NotificationManagerCompat notificationManager = NotificationManagerCompat.from(this);
notificationManager.notify(1, notification);
}
private void createNotificationChannels() {
// if higher than android oreo
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
NotificationChannel channel1 = new NotificationChannel(CHANNEL_1_ID, "Channel 1", NotificationManager.IMPORTANCE_HIGH);
channel1.setDescription("This is channel 1");
NotificationManager manager = getSystemService(NotificationManager.class);
manager.createNotificationChannel(channel1);
}
}
The setNotif method is called by a tap of a button. Again, I'm new to Android programming so any advice would be helpful. Maybe even a different way in which I could diagnose the issue. Thank you!
Add this check in your setNotif() method:
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O)
notificationManager.createNotificationChannel(getNotificationChannel(context));
setNotif() method will be changed like this :
public void setNotif(View view) {
Notification notification = new NotificationCompat.Builder(this, CHANNEL_1_ID)
.setSmallIcon(R.mipmap.ic_launcher)
.setContentTitle("hey")
.setContentText("world")
.setPriority(NotificationCompat.PRIORITY_HIGH)
.build();
NotificationManagerCompat notificationManager = NotificationManagerCompat.from(this);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) notificationManager.createNotificationChannel(getNotificationChannel(context));
notificationManager.notify(1, notification);
}
And getNotificationChannel() method will look like this:
private static NotificationChannel getNotificationChannel(Context context) {
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.O)
return null;
CharSequence name = context.getString(R.string.app_name);// The user-visible name of the channel.
int importance = android.app.NotificationManager.IMPORTANCE_HIGH;
NotificationChannel notificationChannel = new NotificationChannel(BuildConfig.APPLICATION_ID, name, importance);
notificationChannel.setShowBadge(true);
return notificationChannel;
}
I want to display notification from my service for android O but i got this crash and i want's to use IMPORTANCE_UNSPECIFIED with notification channel
java.lang.IllegalArgumentException: Invalid importance level
here is my code.
if (android.os.Build.VERSION.SDK_INT >= 26) {
try {
// Create the channel for the notification
NotificationChannel mChannel = new NotificationChannel(CHANNEL_ID, name, NotificationManager.IMPORTANCE_UNSPECIFIED);
// Set the Notification Channel for the Notification Manager.
mNotificationManager.createNotificationChannel(mChannel);
Notification.Builder builder = new Notification.Builder(this, CHANNEL_ID)
.setSmallIcon(R.mipmap.instant_app_icon)
.setContentTitle(getString(R.string.app_name))
// .setContentText("Instant Service")
.setAutoCancel(true);
PendingIntent contentIntent = PendingIntent.getActivity(this, 0,
new Intent(this, MainActivity.class), PendingIntent.FLAG_UPDATE_CURRENT);
builder.setContentIntent(contentIntent);
Notification notification = builder.build();
startForeground(1, notification);
}
catch (Exception ex){
ex.printStackTrace();
}
}
Hi Avinash You can't use this as per document
IMPORTANCE_UNSPECIFIED
added in API level 24 int IMPORTANCE_UNSPECIFIED Value signifying that
the user has not expressed an importance. This value is for persisting
preferences, and should never be associated with an actual
notification.
for more info you can read here
https://developer.android.com/reference/android/app/NotificationManager.html#IMPORTANCE_UNSPECIFIED
Edit:
Instead you can use any other importance based on your need
IMPORTANCE_DEFAULT
IMPORTANCE_HIGH
IMPORTANCE_LOW
IMPORTANCE_MAX
IMPORTANCE_MIN
According to API Docs
added in API level 24 int IMPORTANCE_UNSPECIFIED Value signifying that the user has not expressed an importance. This value is for persisting preferences, and should never be associated with an actual notification.
You should use NotificationManager.IMPORTANCE_DEFAULT..
Something like this
NotificationChannel mChannel = new NotificationChannel(CHANNEL_ID, name, NotificationManager.IMPORTANCE_DEFAULT);
// Set the Notification Channel for the Notification Manager.
mNotificationManager.createNotificationChannel(mChannel);
You can set lockscreen visibility with notificationChannel.setLockscreenVisibility(Notification.VISIBILITY_SECRET);