How to set the system to automatically enter the default Launch when the system has multiple Launcher

How to set the system to automatically enter the default Launcher when the system has multiple Launcher

[FAQ] How do I set the system to automatically enter the default Launcher when the system has multiple Launcher instances?
[DESCRIPTION]
When the system has multiple launchers, after the system is started and unlocked, a selection box is displayed to allow users to select
If you do not want to select a Launcher, You Want To directly enter a default Launcher and
Choose Settings> Application> Manage Application> list of all applications, and find the previously set
If the default value is canceled, the Launcher selection box is displayed again.
[SOLUTION]
The following uses setting Google Launcher2 as the default Launcher,
Its package name is com. android. launcher.
Launcher activity name is com. android. launcher2.Launcher
Edit the packages/apps/Provision/src/com/android/DefaultActivity. java File
......
// Remove this activity from the package manager.
PackageManager pm = getPackageManager ();
// Add start
String examplePackageName = "com. android. launcher"; // modify it to be set.
Package name
String exampleActivityName = "com. android. launcher2.Launcher // please repair
Change the name of the launcher activity to be set.

Intent intent = new Intent (Intent. ACTION_MAIN );
Intent. addCategory (Intent. CATEGORY_HOME );

List <ResolveInfo> resolveInfoList =
Pm. queryIntentActivities (intent, 0 );
If (resolveInfoList! = Null ){
Int size = resolveInfoList. size ();
For (int j = 0; j <size ;){
Final ResolveInfo r = resolveInfoList. get (j );
If (! R. activityInfo. packageName. equals (examplePackageName )){
ResolveInfoList. remove (j)
Size-= 1;
} Else
{
J ++;
}
}
ComponentName [] set = new ComponentName [size];
ComponentName defaultLauncher = new
ComponentName (examplePackageName, exampleActivityName );
Int defaultMatch = 0;
For (int I = 0; I <size; I ++ ){
Final ResolveInfo resolveInfo =
ResolveInfoList. get (I );
Log. d (TAG, resolveInfo. toString ());
Set [I] = new
ComponentName (resolveInfo. activityInfo. packageName, resolveInfo. activityInfo. name );
If (defalaunlauncher. getClassName (). equals (resolveInfo. activityInfo. name )){
DefaultMatch = resolveInfo. match;
}
}
Log. d (TAG, "defamatch match =" + Integer. toHexString (defaultMatch ));
IntentFilter filter = new IntentFilter ();
Filter. addAction (Intent. ACTION_MAIN );
Filter. addCategory (Intent. CATEGORY_HOME );
Filter. addCategory (Intent. CATEGORY_DEFAULT );

Pm. clearPackagePreferredActivities (defaultLaunchr. getPackageName ());
Pm. addPreferredActivity (filter, defaultMatch, set, defalaunlauncher );
}
// Add end
// Remove this activity from the package manager.
ComponentName name = new ComponentName (this,
DefaultActivity. class );
Pm. setComponentEnabledSetting (name,
PackageManager. COMPONENT_ENABLED_STATE_DISABLED,
PackageManager. DONT_KILL_APP );
......
Modify the packages/apps/Provision/AndroidManifest. xml file and add the following statement:
<Uses-permission
Android: name = "android. permission. SET_PREFERRED_APPLICATIONS"/>
Note:
All the code added above must be placed in the pm. setComponentEnabledSetting statements.
Before,
Note:
If the above steps can be achieved, ignore the following description
If the above steps cannot be achieved
Modify packageManagerService. java
(Framework/base/services/java/com/android/server/pm /)
FindPreferredActivity method
Add the following statement to the code next to the comparison of this method
If (! Pa. mPref. sameSet (query, priority )){
If (! (Intent. getAction ()! = Null
& Intent. getAction (). equals (intent. ACTION_MAIN)
& Intent. getCategories ()! = Null
& Intent. getCategories (). contains (intent. CATEGORY_HOME) // Add
{// Add this line
Slog. I (TAG, "Result set changed, dropping preferred activity
+ Intent + "type" + resolvedType );
MSettings. mPreferredActivities. removeFilter (pa );
Return null;
} // Add this line
Slog. I (TAG, "Result set not change, not drop preferred activity
Special intent: "+ intent); // Add this line
}
You can.