Develop Reference

Why is my app not supported by any devices?

I tried publishing my first app today and everything seems fine except for these supported devices. No phones are included in this list. The app is mostly just a basic reminder app with an app locking feature. User can select apps to lock for x amount of time, like productivity stuff. I'm not sure what I have to change in my androidmanifest in order to solve this issue.
AndroidManifest.xml
<?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="com.example.reminderapp"
tools:ignore="MissingLeanbackLauncher">
<permission android:name="android.permission.QUERY_ALL_PACKAGES" />
<queries>
<intent>
<action android:name="android.intent.action.MAIN" />
<categoDry android:name="android.intent.category.LAUNCHER" />
</intent>
</queries>
<uses-permission android:name="android.permission.INTERNET" />
<uses-feature
android:name="android.hardware.touchscreen"
android:required="false" />
<uses-feature
android:name="android.software.leanback"
android:required="true" />
<uses-permission android:name="android.permission.SCHEDULE_EXACT_ALARM" />
<uses-permission
android:name="android.permission.PACKAGE_USAGE_STATS"
tools:ignore="ProtectedPermissions" />
<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="Reminder App"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="#style/Theme.ReminderApp">
<activity
android:name=".MainActivity"
android:exported="true"
android:launchMode="singleInstance">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".AppsListActivity"
android:exported="true"
android:launchMode="singleInstance">
</activity>
<receiver android:name=".AlertReceiver" />
<service
android:name=".LockWindow"
tools:ignore="Instantiable" />
</application>
</manifest>

Ok I figured out the issue.
in the manifest...
<uses-feature
android:name="android.software.leanback"
android:required="true" />
this should be false ->
android: required = "false"/>

Creating a default launcher app for Android Not Working

I created a default launcher app for an Android TV box that used to work until I ran into some unexpected issues and had to reset the TV Box to factory default. Now it doesn't work anymore. I used to get a "Select Default Launcher" popup when pressing back from my app, but not anymore.
My Manifest.xml
<?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="gensys.firefly.fireflyhikviewer">
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<!--<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />-->
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher_round"
android:label="#string/app_name"
android:supportsRtl="true"
android:theme="#style/Theme.FireflyHikViewer">
<receiver
android:name=".Service"
android:enabled="true"
android:exported="true"
android:permission="android.permission.RECEIVE_BOOT_COMPLETED">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
<action android:name="android.intent.action.QUICKBOOT_POWERON" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</receiver>
<activity
android:name=".MainActivity"
android:banner="#drawable/banner"
android:icon="#drawable/icon2"
android:label="#string/app_name"
android:logo="#drawable/icon2"
android:screenOrientation="landscape"
android:windowSoftInputMode="stateHidden">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
<category android:name="android.intent.category.HOME" />
<category android:name="android.intent.category.DEFAULT" />
<!--<category android:name="android.intent.category.LEANBACK_LAUNCHER" />-->
</intent-filter>
</activity>
</application>
<!--<uses-feature
android:name="android.software.leanback"
android:required="true" />-->
<uses-feature
android:name="android.hardware.touchscreen"
android:required="false" />
</manifest>
I also updated my Android Studio to 4.2.1, so I don't know if that might have changed something.
Please help.

How does the premium version of Here sdk api work?

I signed up with Here sdk Api (Lite version) and I got a 'Freemium' account with an access_key_id and a secret_key as well. Now I want to upgrade my Freemium to Premium because I need the navigation tool for my application and they gave me an app code, api code and licence key (in the same account). when I built the application all I got is a blank page with a button and no errors in my terminal.
My Manifest:
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.here_map_nav">
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
<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:hardwareAccelerated="true"
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>
<meta-data
android:name="com.here.android.maps.appid"
android:value="XXX" />
<meta-data
android:name="com.here.android.maps.apptoken"
android:value="XXX" />
<meta-data
android:name="com.here.android.maps.license.key"
android:value="XXX" />
<service
android:name="com.here.android.mpa.service.MapService"
android:label="{YOUR_LABEL_NAME}"
android:exported="false">
<intent-filter>
<action android:name="{YOUR_INTENT_NAME}"/>
</intent-filter>
</service>
</application>
By the way I don't know what to put in {YOUR_INTENT_NAME} and {YOUR_LABEL_NAME} . I don't know if it's the main problem or I should create an account for a premium version with my billing infos (since each account takes only one project)
Any help or clarifications would be appreciated!

try using below manifest.xml, it seems like action.VIEW is missing in yours.
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<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/AppTheme">
<meta-data android:name="com.here.sdk.access_key_id" android:value="xx" />
<meta-data android:name="com.here.sdk.access_key_secret" android:value="xx" />
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>

Cannot install application in Android Tablet

I am using Android Studio to develop an app which used Camera2 API. I can run the app in Google Nexus 9, however the app is not installed in the device and I cannot access it once I close the app. What am I doing wrong ?
Here is the manifest
<?xml version="1.0" encoding="utf-8"?>
<uses-permission android:name="android.permission.CAMERA" />
<uses-feature android:name="android.hardware.camera2.full" />
<uses-permission android:name="com.example.mapdemo.permission.MAPS_RECEIVE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name=".MapActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.map" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".MainActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="test.camera.main" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="key"/>
<meta-data
android:name="com.google.android.gms.version"
android:value="#integer/google_play_services_version" />
</application>

add the following to your < activity > in your AndroidManifest.xml
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
EDIT: added sample
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.mycompany.android.myapp"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="9"
android:targetSdkVersion="21" />
<uses-permission android:name="android.permission.INTERNET" />
<application
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/Theme.AppCompat" >
<activity
android:name=".ActFirst"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".ActSecond" >
</activity>
</application>
</manifest>

While running my app, I thought I had the same problem.
The problem in my app was the app_name in the strings file was different that what I thought it is. So Basically I was looking for app "X" while the name i gave is "Y".
Maybe you have the same problem.

Android Manifest no launcher found

Im working on android map API and I got it working. The problem is when add a new activity (.ListActivity) and make it my Launcher the console is giving me an error "No Launcher found". Here is my code...
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.themap"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="14"
android:targetSdkVersion="17" />
<permission
android:name="com.example.themap.permission.MAPS_RECEIVE"
android:protectionLevel="signature" />
<uses-permission android:name="com.example.themap.permission.MAPS_RECEIVE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-feature
android:glEsVersion="0x00020000"
android:required="true" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="my_key" />
<activity
android:name="com.example.themap.MainActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<activity
android:name="com.example.themap.ListActivity"
android:label="#string/title_activity_list" >
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</activity>
</application>

It has to be in an intent-filter together with the MAIN.
<activity
android:name="com.example.themap.ListActivity"
android:label="#string/title_activity_list" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>

In your second activity addition you forgot to add intent-filter tags. that is why you are getting the error.
Change your xml file second activity addition as below.
<activity
android:name="com.example.themap.ListActivity"
android:label="#string/title_activity_list" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>

tag is missing in com.example.themap.ListActivity
Also you have more than one android.intent.action.MAIN defined
This is defined in both your activities
Refer - http://developer.android.com/reference/android/content/Intent.html#ACTION_MAIN