Develop Reference

How can I organize my layouts in my Android manifest file

Hi guys I'm new in Android Studio, I'm actually on an project and I was wondering how I can organize my layouts let me explain, I have three layouts and I don't know how to display the first then the second and the third in that order:
-Splash Screen
-principal
-mainActivity
Here is my Android Manifest file:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.recipe">
<uses-permission android:name="android.permission.READ_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">
<activity android:name=".principal" />
<activity android:name=".RecipeActivity" />
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".SplashScreen"
android:theme="#style/Theme.AppCompat.NoActionBar">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
I hope I was clear and I know it's easy to do but as I said I'm new.
Thanks for your help guys.

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.recipe">
<uses-permission android:name="android.permission.READ_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">
<activity android:name=".principal" />
<activity android:name=".RecipeActivity" />
<activity android:name=".MainActivity">
</activity>
<activity
android:name=".SplashScreen"
android:theme="#style/Theme.AppCompat.NoActionBar">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
Change your manifest to this. Your app will start from splash screen. After that it depends that you want to go to which activity. By using intent you can go from one activity to another one.

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.recipe">
<uses-permission android:name="android.permission.READ_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">
<activity android:name=".principal" />
<activity android:name=".RecipeActivity" />
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".SplashScreen"
android:theme="#style/Theme.AppCompat.NoActionBar">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
The rest of the intent and app navigation is your doing , good luck .

Android Studio - Can't find app icon on TV homescreen

When I install my app using a file explorer on my tv, I can run it and everything but I do not know how to create an icon that will sit on the home screen of the tv
Here is my AndroidManifest:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.sony.omgandroid" >
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:supportsRtl="true"
android:theme="#style/AppTheme" >
<activity
android:name=".FullscreenActivity"
android:configChanges="orientation|keyboardHidden|screenSize"
android:label="#string/app_name"
android:theme="#style/FullscreenTheme" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>

It utilizes the android:banner in the AndroidManifest on the application tag.
<application
android:name=".ExampleApp"
android:banner="#drawable/app_banner"
android:theme="#style/AppTheme"

You need add in AndroidManifest.xml file
android:banner android:icon android:logo and android.intent.category.LEANBACK_LAUNCHER
example:
<activity
...
android:banner="#mipmap/ic_launcher"
android:icon="#mipmap/ic_launcher"
android:logo="#mipmap/ic_launcher">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
<category android:name="android.intent.category.LEANBACK_LAUNCHER" />
</intent-filter>
</activity>

Android showing error while running

i have 2 activities AndroidSlite.java and SqLiteAdapter.java.. my manifest.xml file is given below.it shows No launcher activity found .while running
please help me with the code
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.cerebtec.androidsqlite"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="18" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
<activity android:name="AndroidSQLite"></activity>
</application>
</manifest>

You have to enclose the intent filter around the launcher activity, in order to declare your launcher activity. E.g.
<activity android:name="AndroidSQLite"
android:label="#string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
this way you are telling android that the launcher activity is AndroidSQLite

Use :
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>

AndroidManifest troubles...it won't play the splash screen first

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="edu.virginia.cs2110.finalproject"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="14"
android:targetSdkVersion="19" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="edu.virginia.cs2110.finalproject.Splash"
android:label="#string/splash_name"
android:screenOrientation="landscape">
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<action android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
<activity
android:name="edu.virginia.cs2110.finalproject.InitialActivity"
android:label="#string/title_activity_set_difficulty"
android:screenOrientation="landscape">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name="edu.virginia.cs2110.finalproject.MainActivity"
android:label="#string/app_name"
android:screenOrientation="landscape">
<intent-filter>
<action android:name="edu.virginia.cs2110.finalproject.MAINACTIVITY" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
</application>
</manifest>
No matter what I do to the second intent-filter (change the category from launcher and action from main) my emulator always ignores the first activity's launcher! I've looked online for over 3 hours and I cannot find an answer! Please help! Thank you!

This.
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<action android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
Just could be in the first Activity than you can launch. The correct way is this.
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="edu.virginia.cs2110.finalproject"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="14"
android:targetSdkVersion="19" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="edu.virginia.cs2110.finalproject.Splash"
android:label="#string/splash_name"
android:screenOrientation="landscape">
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<action android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
<activity
android:name="edu.virginia.cs2110.finalproject.InitialActivity"
android:label="#string/title_activity_set_difficulty"
android:screenOrientation="landscape">
</activity>
<activity
android:name="edu.virginia.cs2110.finalproject.MainActivity"
android:label="#string/app_name"
android:screenOrientation="landscape">
</activity>
</application>
</manifest>

Remove the intent filter from 2nd and 3rd activity. You need only initialize it for the first time.
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="edu.virginia.cs2110.finalproject"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="14"
android:targetSdkVersion="19" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="edu.virginia.cs2110.finalproject.Splash"
android:label="#string/splash_name"
android:screenOrientation="landscape">
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<action android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
<activity
android:name="edu.virginia.cs2110.finalproject.InitialActivity"
android:label="#string/title_activity_set_difficulty"
android:screenOrientation="landscape">
</activity>
<activity
android:name="edu.virginia.cs2110.finalproject.MainActivity"
android:label="#string/app_name"
android:screenOrientation="landscape">
</activity>
</application>

Problem is that you are adding
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
To all the activity tags but this filter should only be for the first activity to be launched.
Just remove the filter declaration from other two activities and add it to splash activity only so that android may know splash is first to be launched...

no launcher activity found error

I created very simple activity that displays hello world and a button labled TEST, when i press this button the Toast will display a message and I run this app on the emulator.
the problem is that, when I try to run this app the console displays that
no launcher activity found
and nothing to be displayed on the emulator although the code has no error at all.
manifest.xml:
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.qr00"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="15" />
<application
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name=".QR00"
android:label="#string/title_activity_qr00" >
<meta-data
android:name="android.support.PARENT_ACTIVITY"
android:value="QR00" />
</activity>
</application>
Can anyone tell me how to solve the "no launcher activity found" error?

You need to add
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
So:
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.qr00"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="15" />
<application
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name=".QR00"
android:label="#string/title_activity_qr00" >
<meta-data
android:name="android.support.PARENT_ACTIVITY"
android:value="QR00" />
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>

You need to add this Intent in your Menifest file
<application
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name=".QR00"
android:label="#string/title_activity_qr00" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
<meta-data
android:name="android.support.PARENT_ACTIVITY"
android:value="QR00" />
</activity>

you can add this code in your manifest file in activity tag.
<application
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name=".QR00"
android:label="#string/title_activity_qr00" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
<meta-data
android:name="android.support.PARENT_ACTIVITY"
android:value="QR00" />
</activity>
</application>

add like this
<activity
android:name=".YourclassName"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>