Develop Reference

[Android]: App behavior when receiving notifications on the splash screen and main screen

I'm using flutter and I'm a bad understand native android development very well.
I'm using 2 Activities in my project:
SplashActivity - visible 1 time at the time of launching the app.
MainActivity - the main part of the application.
The problem is that when receiving push-notification from Firebase and when clicking on the notification, the program is completely restarted starting from SlashActivity. I added isTaskRoot to my SplashActivity, but it turned out not to be true, because my notification, when clicked, stopped calling a callback(), only expands the app or opens it starting with SplashActivity.
How it should work:
If MainActivity already exists (either in the background or foreground), open that same instance.
If MainActivity was destroyed (the user previously pressed Back), then open the SplashActivity. The splash activity will redirect you itself to MainActivity.
Notification should be targeted at the MainActivity and changed flow (callback), in depend on the previous points.
#SuppressLint("CustomSplashScreen")
public class SplashActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
supportRequestWindowFeature(Window.FEATURE_NO_TITLE);
super.onCreate(savedInstanceState);
// bad decision
if (!isTaskRoot()) {
finish();
return;
}
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.launch_screen);
new Handler().postDelayed(() -> {
Intent intent = new Intent(SplashActivity.this, MainActivity.class);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.setFlags(Intent.FLAG_ACTIVITY_NO_USER_ACTION);
intent.setFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION);
startActivity(intent);
overridePendingTransition(0, 0);
finish();
}, 2000);
}
}
import io.flutter.embedding.android.FlutterFragmentActivity
class MainActivity: FlutterFragmentActivity() {
}
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.app">
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.INTERNET" />
<application
android:label="example"
android:name="${applicationName}"
android:icon="#mipmap/ic_launcher">
<activity
android:name=".SplashActivity"
android:parentActivityName=".MainActivity"
android:exported="true"
android:allowBackup="true"
android:launchMode="singleTask"
android:theme="#style/AppTheme"
android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
android:hardwareAccelerated="true"
android:windowSoftInputMode="adjustResize">
<meta-data
android:name="io.flutter.embedding.android.SplashScreenDrawable"
android:resource="#drawable/launch_background"
/>
<meta-data
android:name="io.flutter.embedding.android.NormalTheme"
android:resource="#style/NormalTheme"
/>
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
<activity
android:name=".MainActivity"
android:exported="true"
android:launchMode="singleTop"
android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
android:hardwareAccelerated="true"
android:windowSoftInputMode="adjustResize"
android:theme="#style/LaunchTheme">
<meta-data
android:name="io.flutter.embedding.android.NormalTheme"
android:resource="#style/NormalTheme"
/>
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
<intent-filter>
<action android:name="FLUTTER_NOTIFICATION_CLICK" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<meta-data
android:name="flutterEmbedding"
android:value="2" />
<meta-data
android:name="com.google.firebase.messaging.default_notification_channel_id"
android:value="high_importance_channel" />
<meta-data
android:name="com.google.firebase.messaging.default_notification_icon"
android:resource="#drawable/ic_notification" />
<meta-data
android:name="com.google.firebase.messaging.default_notification_color"
android:resource="#color/colorNotification" />
</application>
<queries>
<intent>
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.BROWSABLE" />
<data android:scheme="https" />
</intent>
<intent>
<action android:name="android.intent.action.SENDTO" />
<data android:scheme="mailto" />
</intent>
</queries>
</manifest>
I/flutter (16767): onMessage event: Notification text - Test a body message
E/libc (16767): Access denied finding property "ro.vendor.df.effect.conflict"
E/libc (16767): Access denied finding property "ro.vendor.knock.type"
W/example.app(16767): Accessing hidden method Landroid/os/WorkSource;->add(I)Z (greylist,test-api, reflection, allowed)
W/example.app(16767): Accessing hidden method Landroid/os/WorkSource;->add(ILjava/lang/String;)Z (greylist,test-api, reflection, allowed)
W/example.app(16767): Accessing hidden method Landroid/os/WorkSource;->get(I)I (greylist, reflection, allowed)
W/example.app(16767): Accessing hidden method Landroid/os/WorkSource;->getName(I)Ljava/lang/String; (greylist, reflection, allowed)
W/FirebaseMessaging(16767): Unable to log event: analytics library is missing
W/FirebaseMessaging(16767): Unable to log event: analytics library is missing
D/DecorView[](16767): getWindowModeFromSystem windowmode is 1
D/DecorView(16767): createDecorCaptionView windowingMode:1 mWindowMode 1 isFullscreen: true

No internet permission but the permission is given, when i intilize the admob banner (it give a red underlying saying i dont have permission)

I get this missing "Missing permissions required by BaseAdView.loadAd: android.permission.INTERNET" when i copy pasted the meta tags that are needed for the google maps sdk, without them it doesn't show the error. What could be the issue and the fix?
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="*******">
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="#style/Theme.SmartQ">
<activity
android:name=".mapp"
android:exported="false" />
<activity
android:name=".sdkmaps"
android:exported="false" />
<activity
android:name=".map"
android:exported="false" />
<!--
TODO: Before you run your application, you need a Google Maps API key.
To get one, follow the directions here:
https://developers.google.com/maps/documentation/android-sdk/get-api-key
Once you have your API key (it starts with "AIza"), define a new property in your
project's local.properties file (e.g. MAPS_API_KEY=Aiza...), and replace the
"YOUR_API_KEY" string in this file with "${MAPS_API_KEY}".
-->
<meta-data
android:name="com.google.android.geo.API_KEY"
android:value="${MAPS_API_KEY}" />
<meta-data
android:name="com.google.android.gms.version"
android:value="#integer/google_play_services_version" />
<activity
android:name=".Web_view"
android:exported="false" />
<activity
android:name=".Update1"
android:exported="false" />
<activity
android:name=".MainActivity"
android:exported="true">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity> <!-- Sample AdMob app ID: ca-app-pub-3940256099942544~3347511713 -->
<meta-data
android:name="com.google.android.gms.ads.APPLICATION_ID"
android:value="*******" />
</application>
</manifest>
picture

The problem is that android is unable to resolve ${MAPS_API_KEY}.
The easiest fix is replacing ${MAPS_API_KEY} with real key directly in manifest, something like:
<meta-data
android:name="com.google.android.geo.API_KEY"
android:value="AIzaSyBdJ88HN7LTGkHHK5whfaVv8a5ozlx2E_k" />
If you anyway want to store your key in .properties file, follow this answer:
How to store maps api key in local.properties and use it in AndroidManifest.xml

"Default activity not found"

I keep getting the "Default activity is not found" error whenever I want to try and run my app. I have tried 'clean project', 'invalidate caches/restart' and restarted my computer.
UPDATE: I tried running different projects, but they all give the same error too. This makes me think there must be something wrong with settings.
It works perfectly for my friend, but I get the error that the "Default activity is not found". If I try to launch a specific activity it also says the activity is not found. This is the code in the androidmanifest.xml file:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
package="ek97.fhict.theapp">
<!-- To auto-complete the email text field in the login form with the user's emails -->
<uses-permission android:name="android.permission.GET_ACCOUNTS" />
<uses-permission android:name="android.permission.READ_PROFILE" />
<uses-permission android:name="android.permission.READ_CONTACTS" />
<!--
The ACCESS_COARSE/FINE_LOCATION permissions are not required to use
Google Maps Android API v2, but you must specify either coarse or fine
location permissions for the 'MyLocation' functionality.
-->
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission. ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.INTERNET" />
<application
android:allowBackup="true"
android:icon="#drawable/loqate_logo"
android:label="#string/app_name"
android:roundIcon="#drawable/loqate_logo"
android:supportsRtl="true"
android:theme="#style/AppTheme"
tools:ignore="GoogleAppIndexingWarning">
<activity
android:name=".bottomnavigationfinal"
android:label="#string/title_activity_bottomnavigationfinal"/>
<activity android:name="Settings" />
<activity
android:name=".Login"
android:label="#string/title_activity_login" />
<activity
android:name=".Registration"
android:exported="true"
android:label="#string/title_activity_registration" />
<activity android:name=".Navigation" />
<activity android:name=".SplashScreen">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<!--
The API key for Google Maps-based APIs is defined as a string resource.
(See the file "res/values/google_maps_api.xml").
Note that the API key is linked to the encryption key used to sign the APK.
You need a different API key for each encryption key, including the release key that is used to
sign the APK for publishing.
You can define the keys for the debug and release targets in src/debug/ and src/release/.
-->
<activity
android:name=".GoogleMaps"
android:label="#string/title_activity_google_maps" >
<meta-data
android:name="com.google.android.geo.API_KEY"
android:value="#string/google_maps_key" />
</activity>
<activity android:name=".Profile" />
</application>
</manifest>

If it works for your friend and it is the same code it could be that all you need to do is to refresh the cache of your IDE:
File -> Invalidate Caches / Restart

Try this::
Your manifest is missing default activity
Add to any activity as you consider a default activity
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>

I finally solved it by making sure all implementation versions were the same, there were some in a 28.0.0 version and others in a 26.1.0. version. Now the app works fine on the emulator. Thanks for your suggestions though

Parse sending notifications in dashboard but Android device not receiving

I've successfully created a Parse app and I'm using the application keys in my Android app implementation. I've followed all the steps here https://www.parse.com/apps/quickstart?onboard=#parse_push/android/existing (registration required unfortunately, but it's an instant process) and when I send a test push notification it is dispatched from the dashboard and is even received by a virtual device I'd set up as a control but nothing happens on a physical device. I thought it might be a socket issue so I alternated between wifi and 3G connections with no success
Here's the code I'm using:
Main:
package com.wetu.chronicle;
import android.os.Bundle;
import org.apache.cordova.*;
import com.parse.Parse;
import com.parse.ParseAnalytics;
import com.parse.ParseInstallation;
import com.parse.PushService;
public class chronicle extends DroidGap
{
#Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
super.loadUrl(Config.getStartUrl());
Parse.initialize(this, "xxxxxxxxx", "yyyyyyyyyyyy");
PushService.setDefaultPushCallback(this, chronicle.class);
PushService.subscribe(this, "Newsfeed", chronicle.class);
ParseInstallation.getCurrentInstallation().saveInBackground();
}
}
Android Manifest:
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_LOCATION_EXTRA_COMMANDS" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.RECEIVE_SMS" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.BROADCAST_STICKY" />
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<uses-permission android:name="android.permission.VIBRATE" />
<uses-permission android:name="android.permission.GET_ACCOUNTS" />
<uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" />
<!--
IMPORTANT: Change "com.parse.starter.permission.C2D_MESSAGE" in the lines below
to match your app's package name + ".permission.C2D_MESSAGE".
-->
<permission android:protectionLevel="signature"
android:name="com.wetu.chronicle.permission.C2D_MESSAGE" />
<uses-permission android:name="com.wetu.chronicle.permission.C2D_MESSAGE" />
<application
android:debuggable="false"
android:hardwareAccelerated="true"
android:icon="#drawable/icon"
android:label="#string/app_name" tools:ignore="HardcodedDebugMode">
<activity android:name="chronicle" android:label="#string/app_name"
android:theme="#android:style/Theme.Black.NoTitleBar"
android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<service android:name="com.parse.PushService" />
<receiver android:name="com.parse.ParseBroadcastReceiver">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
<action android:name="android.intent.action.USER_PRESENT" />
</intent-filter>
</receiver>
<receiver android:name="com.parse.GcmBroadcastReceiver"
android:permission="com.google.android.c2dm.permission.SEND">
<intent-filter>
<action android:name="com.google.android.c2dm.intent.RECEIVE" />
<action android:name="com.google.android.c2dm.intent.REGISTRATION" />
<!--
IMPORTANT: Change "com.parse.starter" to match your app's package name.
-->
<category android:name="com.wetu.chronicle" />
</intent-filter>
</receiver>
</application>
<uses-sdk android:minSdkVersion="9" android:targetSdkVersion="19"/>
I'm available to clarify any questions you might have and/or post additional code.

Its most likely because your app isn't active in the background. A lot of my android apps have been struggling from this. A decent solution might be to make sure there is an alarm clock that wakes the app up. I've never dealt with parse though so this may not work, its worked for me in other scenarios though

Android DropBox API-Link with DropBox Fails(DBRoulette)

When I try access dropbox API with DBRoulette, example application from DropBox API, using Android,
I get the following two messages in the simulator:
Link to DropBox(I click it) then
-Unfortunately browser has stopped.
I've got an APP_KEY, SECRET_KEY from dropbox, my manifest file is:
<uses-sdk android:minSdkVersion="19" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<application android:icon="#drawable/icon" android:label="#string/app_name">
<activity
android:name=".DBRoulette"
android:label="#string/app_name"
android:configChanges="orientation|keyboard">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name="com.dropbox.client2.android.AuthActivity"
android:launchMode="singleTask"
android:configChanges="orientation|keyboard">
<intent-filter>
<!-- Change this to be db- followed by your app key -->
<data android:scheme="db-XXXXXXX" />
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.BROWSABLE"/>
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
My main file is DBRoulette, identical to the example app:
com.dropbox.android.sample;
public class DBRoulette extends Activity {
private static final String TAG = "DBRoulette";
///////////////////////////////////////////////////////////////////////////
// Your app-specific settings. //
///////////////////////////////////////////////////////////////////////////
// Replace this with your app key and secret assigned by Dropbox.
// Note that this is a really insecure way to do this, and you shouldn't
// ship code which contains your key & secret in such an obvious way.
// Obfuscation is good.
final static private String APP_KEY = "xxxxxx";
final static private String APP_SECRET = "xxxx";
....
I am using all jars suggested:dropbox-api, http-mime, json-simple, and android 4.4 as the version.
Why can't I access dropbox? is it because the simulator?

It didn't work because it ran on the simulator not on the phone.
Used it on the phone, no problems.