android - How to change launcher icon and it's label from the application

Question

How can I change the launcher icon and its label from my application runtime in Android? (if it is possible)
I mean the properties defined in AndroidManifest.xml: android:icon and android:label. I want to replace it by the image I take from the camera.

Answer 1

This entire answer is from this post and it was taken from P-A and CommonsWare.

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You cannot change the manifest or the resource in the signed-and-sealed APK, except through a software upgrade. or Try this, it`s work fine for me but not sure for all devices:

1. Modify your MainActivity section in AndroidManifest.xml, delete from it, line with MAIN category in intent-filter section.

   <activity android:name="ru.quickmessage.pa.MainActivity"
    android:configChanges="keyboardHidden|orientation"
    android:screenOrientation="portrait"
    android:label="@string/app_name"
     android:theme="@style/CustomTheme"
     android:launchMode="singleTask">
     <intent-filter>
      <action android:name="android.intent.action.MAIN" />
      <category android:name="android.intent.category.LAUNCHER" />//DELETE THIS LINE
    </intent-filter>
   </activity>
   

2. Create <activity-alias> for your app, for each of your icons. Like this

   <activity-alias android:label="@string/app_name" 
   android:icon="@drawable/icon" 
   android:name=".MainActivity-Red"
   android:enabled="false"
   android:targetActivity=".MainActivity">
   <intent-filter>
   <action android:name="android.intent.action.MAIN" />
   <category android:name="android.intent.category.LAUNCHER" />
   </intent-filter>   
   </activity-alias>
   

3. Set programmatically ENABLE attribute for necessary

   getPackageManager().setComponentEnabledSetting(
   new ComponentName("ru.quickmessage.pa", "ru.quickmessage.pa.MainActivity-Red"), 
       PackageManager.COMPONENT_ENABLED_STATE_ENABLED, PackageManager.DONT_KILL_APP);
   

Note, At least one must be enabled and above code perfect working up to 4.0 not tested into >4.0.