Im trying to create a notification from an edittext and broadcast receiver. In my first Activity the user should input a message and push the broadcast button. I want to take that string and create a notification from it and open a new activity that displays the message. I am doing all the notification work in my broadcast receiver class.
I have looked around onlne at examples and other peoples code but im not sure what im not getting right. The application loads up just fine and the broadcast button sends the broadcast to the receiver and Logs the string but the notification is never created.
Thanks for any help.
Broadcast class that sends broadcast message:
public class BroadcastReceiverActivity extends Activity
{
EditText et;
Button btn1;
public static String BString = "HappyHemingway";
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_broadcast_receiver);
et = (EditText)findViewById(R.id.et1);
btn1 = (Button)findViewById(R.id.btn1);
btn1.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v)
{
String message = et.getText().toString();
send(message);
}
});
}
/*
* This function creates an intent and
* sends a broadcast from the message
* parameter passed in.
*/
protected void send(String msg)
{
Log.i("msg", msg);
Intent i = new Intent();
i.putExtra("message",msg);
i.setAction(BString);
sendBroadcast(i);
}
}
Receiver class that creates notification:
public class Receiver extends BroadcastReceiver
{
// #SuppressLint("NewApi")
#Override
public void onReceive(Context context, Intent intent)
{
String action = intent.getAction();
if(action!=null&&action.equals("HappyHemingway"))
{
String msg = intent.getStringExtra("message");
Log.i("Received",msg);
Intent i = new Intent(context,ViewNotification.class);
i.putExtra("message",msg);
PendingIntent pi = PendingIntent.getActivity(context, 0, i,
PendingIntent.FLAG_UPDATE_CURRENT);
Notification.Builder builder = new Notification.Builder(context).
setSmallIcon(0).setAutoCancel(true).setTicker(msg).
setWhen(System.currentTimeMillis()).setContentTitle("New Notification!").
setContentText(msg).setContentIntent(pi);
NotificationManager mgr = (NotificationManager) context
.getSystemService(Context.NOTIFICATION_SERVICE);
Notification n = builder.build();
mgr.notify(0, n);
Log.i("Received again",msg);
}
}
}
notification viewer class that is never launched
public class ViewNotification extends Activity
{
String text;
TextView txttext;
#Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.viewnotification);
NotificationManager notificationmanager;
notificationmanager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
notificationmanager.cancel(0);
Intent i = getIntent();
text = i.getStringExtra("message");
txttext = (TextView) findViewById(R.id.text);
txttext.setText(text);
Log.i("made it", "made it made it made it");
}
}
manifest
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name=".BroadcastReceiverActivity"
android:label="#string/app_name" >
<action android:name="android.intent" />
<category android:name="android.intent.category.LAUNCHER" />
</activity>
<activity android:name=".ViewNotification"></activity>
<receiver android:name="Receiver">
<intent-filter>
<action android:name="HappyHemingway">
</action>
</intent-filter>
</receiver>
</application>
</manifest>
Hopefully its just a simple error I'm overlooking.This is my first time using Android Studio instead of Eclipse but I dont see how that could make any difference under than my unfamiliarity with the IDE.
Anything helps
thanks.
I'm not sure why I had setSmallIcon(0.)
When I changed it to setSmallIcon(R.drawable.ic_launcher) everything worked fine.
Related
Goal: click the button to jump out of the notification, the user can jump from the notification to another page.
The notification is displayed but clicking the notification cannot jump to the page.
I think the PendingIntent is wrong.
How to fix it?
public class MainActivity extends AppCompatActivity {
private String CHANNEL_ID = "Coder";
NotificationManager manager;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
NotificationChannel channel = new NotificationChannel(
CHANNEL_ID, "DemoCode", NotificationManager.IMPORTANCE_DEFAULT);
manager = getSystemService(NotificationManager.class);
assert manager != null;
manager.createNotificationChannel(channel);
}
Button btDefault,btCustom;
btDefault = findViewById(R.id.button_DefaultNotification);
btCustom = findViewById(R.id.button_CustomNotification);
btDefault.setOnClickListener(onDefaultClick);
}
private final View.OnClickListener onDefaultClick = new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent nextIntent = new Intent(MainActivity.this, secondActivity.class);
PendingIntent pendingIntent = PendingIntent.getActivity(MainActivity.this, 0, nextIntent,PendingIntent.FLAG_IMMUTABLE);
NotificationCompat.Builder builder = new NotificationCompat.Builder(MainActivity.this, CHANNEL_ID);
builder.setContentTitle("Notification");
builder.setContentText("You have a new message");
builder.setSmallIcon(R.drawable.ic_baseline_accessible_forward_24);
builder.setContentIntent(pendingIntent);
builder.setAutoCancel(true);
manager.notify(1, builder.build());
}
Check if this works for you. As mentioned in android api
You should consider user's expected navigation experience. So for making the best navigation using pendingIntent with Notification, you should do as follow:
1. First define your app's hierarchy inside AndroidManifest.xml:
<activity
android:name=".MainActivity"
... >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<!-- MainActivity is the parent for SecondActivity -->
<activity
android:name=".SecondActivity"
android:parentActivityName=".MainActivity" />
...
</activity>
Now you told android that when a notification clicked, SecondActivity would be the child of MainActivity when user is navigating up.
2. Create PendingIntent using TaskStackBuilder:
Intent intent = new Intent(MainActivity.this, SecondActivity.class);
PendingIntent pendingIntent = TaskStackBuilder.create(MainActivity.this)
.addNextIntentWithParentStack(intent)
.getPendingIntent(0, PendingIntent.FLAG_IMMUTABLE)
Then you can set the PendingIntent we created to the notification. And now if user touches the notification, android system will navigate him to SecondActivity while holding MainActivity in back stack.
I'm trying for well over 10 hours now and I can't seem to think about anyhting else. I tried every possible example on the internet, but to no avail.
I have NotificationMonitor class extending NotificationListenerService and I wanted to send message from this service to main activity(and possible other activities and services in the future) using Intent mechanism. I post code below:
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.testpackage.test">
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<service android:name=".NotificationMonitor"
android:label="#string/app_name"
android:permission="android.permission.BIND_NOTIFICATION_LISTENER_SERVICE">
<intent-filter>
<action android:name="android.service.notification.NotificationListenerService" />
</intent-filter>
</service>
</application>
</manifest>
MainActivity.java
public class MainActivity extends Activity {
private TextView txtView;
private NotificationReceiver nReceiver;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
txtView = (TextView) findViewById(R.id.textView);
//create receiver
nReceiver = new NotificationReceiver();
IntentFilter filter = new IntentFilter();
filter.addAction("com.testpackage.test.NOTIFICATION_MONITOR");
registerReceiver(nReceiver,filter);
}
#Override
protected void onDestroy() {
super.onDestroy();
unregisterReceiver(nReceiver);
}
public void buttonClicked(View v){
if(v.getId() == R.id.btnTestBroadcast){
//send test intent without category
Log.d("ActivityMain","Button clicked");
Intent i = new Intent("com.testpackage.test.NOTIFICATION_MONITOR");
sendBroadcast(i);
}
}
class NotificationReceiver extends BroadcastReceiver{
#Override
public void onReceive(Context context, Intent intent) {
Log.d("ActivityMain","Intent received: "+intent.getAction()+" has extra: "+intent.hasExtra("info"));
if (intent.hasCategory("com.testpackage.test.TEST_CATEGORY")) {
if (intent.hasExtra("info")) {
txtView.setText(intent.getStringExtra("info"));
}
}
}
}
}
NotificationMonitor.java
public class NotificationMonitor extends NotificationListenerService {
private NotificationMonitorReceiver receiver;
#Override
public void onCreate() {
super.onCreate();
receiver = new NotificationMonitorReceiver();
IntentFilter filter = new IntentFilter();
filter.addAction("com.testpackage.test.NOTIFICATION_MONITOR");
registerReceiver(receiver,filter);
}
#Override
public void onDestroy() {
super.onDestroy();
unregisterReceiver(receiver);
}
#Override
public void onNotificationPosted(StatusBarNotification sbn) {
//do something
sendInfo("notification posted");
}
#Override
public void onNotificationRemoved(StatusBarNotification sbn) {
//do something
sendInfo("notification removed");
}
#Override
public void onListenerConnected() {
//service created and listener connected
Log.d("NM","Listener connected!");
sendInfo("listener connected");
}
private void sendInfo(String info) {
Log.d("NM", "sendInfo called!");
Intent i = new Intent("com.testpackage.test.NOTIFICATION_MONITOR");
i.addCategory("com.testpackage.test.TEST_CATEGORY");
i.putExtra("info", info);
sendBroadcast(i);
}
class NotificationMonitorReceiver extends BroadcastReceiver{
#Override
public void onReceive(Context context, Intent intent) {
//no categories intents get replied
Log.d("NM","Intent received: "+intent.getAction()+" has categories: "+(intent.getCategories()!=null));
if (intent.getCategories() == null) {
Intent i = new Intent("com.testpackage.test.NOTIFICATION_MONITOR");
i.addCategory("com.testpackage.test.TEST_CATEGORY");
sendBroadcast(i);
}
}
}
}
After running this app in debug mode of course I need to re-enable notification permissions, so when I do I see in logcat:
10-10 16:22:46.428 7330-7381/com.testpackage.test D/NM: Listener connected!
10-10 16:22:46.428 7330-7381/com.testpackage.test D/NM: sendInfo called!
well, I should receive broadcast in my application, shouldn't I?
After I click button:
10-10 16:22:57.607 7330-7330/com.testpackage.test D/ActivityMain: Button clicked
10-10 16:22:57.612 7330-7330/com.testpackage.test D/ActivityMain: Intent received: com.testpackage.test.NOTIFICATION_MONITOR has extra: false
10-10 16:22:57.619 7330-7330/com.testpackage.test D/NM: Intent received: com.testpackage.test.NOTIFICATION_MONITOR has categories: false
so the Intent is properly created and send from main activity, received back by the same activity and NotificationListenerService, has no categories so should get replied but nothing happens like when sendInfo method is called.
Please help, I have no other ideas about what might be wrong.
edit: I tested with regular services and of course Broadcasts are working just fine. Is there by chance any possibility that you just can't sendBroadcast from this particular extended service class?
Oficially, I'm a moron. Answer is: I didn't set up Category filter in IntentFilter and this is why I received zero properly sent intents from my class. So, long story short, to "fix" this mistake all one needs to do is add:
filter.addCategory("com.testpackage.test.TEST_CATEGORY");
and that's it. Thank you for your attention.
I am trying to create an application that listens for downloads and performs an action upon hearing it. The key here is that I want the application to do this even when it's minimized (like when a user downloads from the browser). The following code does not seem to be tripping the receiver:
public class MainActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
BroadcastReceiver receiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
System.out.println("did download");
String action = intent.getAction();
if (DownloadManager.ACTION_DOWNLOAD_COMPLETE.equals(action)) {
String downloadPath = intent.getStringExtra(DownloadManager.COLUMN_URI);
System.out.println(downloadPath);
}
}
};
registerReceiver(receiver, new IntentFilter(DownloadManager.ACTION_DOWNLOAD_COMPLETE));
}
}
Anyone know what's wrong?
Your almost there just move your BroadcastReceiver to a separate file . Do what you want with the received String downloadPath. In this example I save it to SharedPreferences.
public class MyBroadcastReceiver extends BroadcastReceiver{
#Override
public void onReceive(final Context context, Intent intent) {
SharedPreferences settings = PreferenceManager.getDefaultSharedPreferences(context);
SharedPreferences.Editor editor = settings.edit();
String action = intent.getAction();
if (DownloadManager.ACTION_DOWNLOAD_COMPLETE.equals(action)) {
String downloadPath = intent.getStringExtra(DownloadManager.COLUMN_URI);
editor.putString("downloadPath", downloadPath);
editor.commit();
}
}
}
In your manifest add this and edit the action
<receiver android:name=".MyBroadcastReceiver " >
<intent-filter>
<action android:name="PUT YOUR ACTION HERE DownloadManager.ACTION_DOWNLOAD_COMPLETE" />
</intent-filter>
</receiver>
Just declare the broadcast receiver in manifest. More about the differences between the dynamically register and statically register, please see BroadcastReceiver
I am attempting to convert some code I found in a tutorial for my own use. Originally, the code launched the system contacts list when the user would click a notification generated by my app. I am trying to start an Activity of my own instead of launching the contact list, but it's not working. More specifically, nothing happens. There is no error, and my Activity doesn't load either. The notification window disappears after clicking, and the original Activity is still visible.
Here is my code:
public class MyBroadcastReceiver extends BroadcastReceiver {
private NotificationManager mNotificationManager;
private int SIMPLE_NOTFICATION_ID;
public void onReceive(Context context, Intent intent){
Bundle extras = intent.getExtras();
String deal = (String) extras.get("Deal");
String title = "Deal found at " + (String) extras.get("LocationName");
mNotificationManager = (NotificationManager)context.getSystemService(Context.NOTIFICATION_SERVICE);
Notification notifyDetails = new Notification(R.drawable.icon, title,System.currentTimeMillis());
Class ourClass;
try {
ourClass = Class.forName("com.kjdv.gpsVegas.ViewTarget");
Intent startMyActivity = new Intent(context, ourClass);
PendingIntent myIntent = PendingIntent.getActivity(context, 0,startMyActivity, 0);
notifyDetails.setLatestEventInfo(context, title, deal, myIntent);
notifyDetails.flags |= Notification.FLAG_AUTO_CANCEL;
notifyDetails.flags |= Notification.DEFAULT_SOUND;
mNotificationManager.notify(SIMPLE_NOTFICATION_ID, notifyDetails);
}
catch (ClassNotFoundException e) {
e.printStackTrace();
}
}
}
This is my entry in the AndroidManifext.xml file...
<activity android:name=".ViewTarget" android:label="#string/app_name" >
<intent-filter>
<action android:name="com.kjdv.gpsVegas.ViewTarget" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
And this is my Activity that I want to launch...
public class ViewTarget extends ListActivity {
public ListAdapter getListAdapter() {
return super.getListAdapter();
}
public ListView getListView() {
return super.getListView();
}
public void setListAdapter(ListAdapter adapter) {
super.setListAdapter(adapter);
}
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.locations);
Log.v("db", "Inside ViewTarget");
}
}
Which Android version are you running on? You might wanna try using NotificationCompat instead. This class is include in the latest support package.
Intent notificationIntent = new Intent(context, ViewTarget.class);
PendingIntent contentIntent = PendingIntent.getActivity(context,
0, notificationIntent,
PendingIntent.FLAG_CANCEL_CURRENT);
NotificationManager nm = (NotificationManager) context
.getSystemService(Context.NOTIFICATION_SERVICE);
Resources res = context.getResources();
NotificationCompat.Builder builder = new NotificationCompat.Builder(context);
builder.setContentIntent(contentIntent)
.setSmallIcon(R.drawable.app_icon)
.setLargeIcon(BitmapFactory.decodeResource(res, R.drawable.app_icon))
.setTicker(payload)
.setWhen(System.currentTimeMillis())
.setAutoCancel(true)
.setContentTitle("Message")
.setContentText(payload);
Notification n = builder.getNotification();
n.defaults |= Notification.DEFAULT_ALL;
nm.notify(0, n);
EDIT:
I know this is an old thread/question but this answer helped me for showing the activity when tapping the notification.
For those people that this isn't working is probably because you haven't "registered" the activity in your manifest. For example:
<activity
android:name="com.package.name.NameOfActivityToLaunch"
android:label="Title of Activity" >
<intent-filter>
<action android:name="com.package.name.NAMEOFACTIVITYTOLAUNCH" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
And, hopefully, this should work.
Hope it helped...
you should set action and category for Intent.
Intent startMyActivity = new Intent(context, ourClass);
startMyActivity .setAction(Intent.ACTION_MAIN);
startMyActivity .addCategory(Intent.CATEGORY_LAUNCHER);
it works
I figured out the problem. I forgot to include the package name in the activity declaration in the Manifest file.
Wrong:
activity android:name=".ViewTarget" android:label="#string/app_name"
Correct:
activity android:name="com.kjdv.gpsVegas.ViewTarget" android:label="#string/app_name"
Can you try removing the Intent filter, so it looks like this:
<activity android:name=".ViewTarget" android:label="#string/app_name" />
Also, not sure if this code will work:
ourClass = Class.forName("com.kjdv.gpsVegas.ViewTarget");
Intent startMyActivity = new Intent(context, ourClass);
Can you try it like this instead:
Intent startMyActivity = new Intent(context, ViewTarget.class);
In order to launch an Activity from an Intent, you need to add a flag:
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
This is true even if you declare the class in the Intent's constructor.
check this code
public class TestActivity extends Activity {
private static final int UNIQUE_ID = 882;
public static NotificationManager nm;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
nm = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
Intent navigationIntent = new Intent();
navigationIntent.setClass(classname.this, MainActivity.class);
PendingIntent pi = PendingIntent.getActivity(this, 0, navigationIntent,
0);
String body = "New notificattion added!!!";
String title = "Notification";
Notification n = new Notification(R.drawable.icon, body,
System.currentTimeMillis());
//this is for giving number on the notification icon
n.number = Integer.parseInt(responseText);
n.setLatestEventInfo(this, title, body, pi);
n.defaults = Notification.DEFAULT_ALL;
nm.notify(UNIQUE_ID, n);
I have a receiver that works well, but I can't seem to show a proper UI, although the toast appears correctly. As far as I can tell, this is caused by Android requiring the class to extend Activity, however, the class already extends BroadcastReceiver, so I can't do this.
So, I tried to do an Intent, but this failed too. There are no errors, but the screen doesn't show. Source code is below.
Broadcast (Method in AndyRoidAlarm)
public void setAlarm(){
Intent intent = new Intent(AndyRoidAlarm.this, Reciever.class);
PendingIntent sender = PendingIntent.getBroadcast(AndyRoidAlarm.this,
0, intent, 0);
// We want the alarm to go off 30 seconds from now.
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(System.currentTimeMillis());
calendar.add(Calendar.SECOND, 10);
// Schedule the alarm!
AlarmManager am = (AlarmManager)getSystemService(ALARM_SERVICE);
am.set(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), sender);
// Tell the user about what we did.
if (mToast != null) {
mToast.cancel();
}
mToast = Toast.makeText(AndyRoidAlarm.this, "Alarm Scheduled for 30secs", Toast.LENGTH_LONG);
mToast.show();
}
Reciever
public class Reciever extends BroadcastReceiver
{
#Override
public void onReceive(Context context, Intent intent)
{
Toast.makeText(context, "Alarm Received", Toast.LENGTH_LONG).show();
Intent i = new Intent();
i.setClass(context, AlarmRing.class);
}
}
Reciever V2
#Override
public void onReceive(Context context, Intent intent)
{
Toast.makeText(context, "Alarm Received", Toast.LENGTH_LONG).show();
Intent foo = new Intent(context, AlarmRing.class);
//foo.putExtra("id", "id");//example, if you wish to pass custom variables
context.startActivity(foo);
}
AlarmRing
public class AlarmRing extends Activity {
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.alarm);
MediaPlayer mp = MediaPlayer.create(getBaseContext(), R.raw.sweetchild);
mp.start();
}
Manifest
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.comaad.andyroidalarm"
android:versionCode="1"
android:versionName="1.0">
<application android:icon="#drawable/icon" android:label="#string/app_name">
<activity android:name=".AndyRoidAlarm"
android:label="#string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<receiver android:name="com.comaad.andyroidalarm.Reciever" android:enabled="true">
<intent-filter>
<action android:name="com.comaad.andyroidalarm.Reciever"></action>
</intent-filter>
</receiver>
<activity android:name=".AlarmRing"></activity>
</application>
</manifest>
}
In a BroadcastReceiver onReceive() method, if you need a Context (e.g., to create an Intent), use the Context that is passed to you as a parameter of onReceive(). You even have this code in your onReceive() -- you're just not doing anything with the resulting Intent (e.g., calling startActivity()).
Intent foo = new Intent(this, AlarmRing.class);
foo.putExtra("id", id);//example, if you wish to pass custom variables
this.startActivity(foo);
Edit
Check out this example to use BroadcastReciever within an Activity. http://almondmendoza.com/2009/01/04/getting-battery-information-on-android/