I ran into the following issue: I have an app I want my user to be able to select it as the launcher app. So far, no issues there.
Clearing said selection programmatically also isnt an issue here. Where my issue occurs is the following:
When I my custom launcher programmatically I want to go back to default launcher app, e.g. the default on a samsung galaxy. clearing the launch settings over clearPackagePrefferedActivities clears all of it but once i press the home button I get the dialog to select a default launcher again.
Is there anyway to revert back programmatically to the default launcher?
The user always needs to confirm a change in the default settings. You can always trigger the "default launcher" dialog by
PackageManager pm = getPackageManager();
ComponentName cm = new ComponentName(this, FakeLauncherActivity.class);
pm.setComponentEnabledSetting(cm, PackageManager.COMPONENT_ENABLED_STATE_ENABLED, PackageManager.DONT_KILL_APP);
Intent homeIntent= new Intent(Intent.ACTION_MAIN);
homeIntent.addCategory(Intent.CATEGORY_HOME);
homeIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(homeIntent);
pm.setComponentEnabledSetting(cm, PackageManager.COMPONENT_ENABLED_STATE_DISABLED, PackageManager.DONT_KILL_APP);
Where FakeLauncherActivity is just another Activity in your app with the intent-filter HOME/MAIN/DEFAULT (without LAUNCHER).
If you want to know the default system launcher you could query the intents answering the LAUNCHER Intent, but if the user has another Launcher installed, you will not know which one is the default system launcher.
Even if this is not a complete solution for your question, I hope it helps you in a useful direction.
Related
My Final project requires that app must be hidden,and never opened again unless entering some code in phone dialer (ex: *123#) can you help me guys to do that task?
This is a bit tricky and it has its up and downs, but what you need to do basically is:
On app install, you need to programmatically disable the app Icon so you cannot open it manually.
Have a BroadcastReceiver registered with the PROCESS_OUTGOING_CALLS intent filter (don't forget to set the uses-permissions).
In the receiver, listen for every dialed number and when it matches yours you need to activate the App Icon again and then you start the activity with possibly extra data to handle it later.
After processing the data in your activity remember to deactivate the icon again.
To programmatically disable the icon use:
PackageManager packageManager = getPackageManager();
ComponentName componentName = new ComponentName(this, MainActivity.class);
packageManager.setComponentEnabledSetting(
componentName,PackageManager.COMPONENT_ENABLED_STATE_DISABLED, PackageManager.DONT_KILL_APP
);
To enable it:
PackageManager packageManager = context.getPackageManager();
ComponentName componentName = new ComponentName(context, MainActivity.class);
packageManager.setComponentEnabledSetting(
componentName,PackageManager.COMPONENT_ENABLED_STATE_ENABLED, PackageManager.DONT_KILL_APP
);
In your receiver to get the dialed number you need to use:
if (intent.getAction().equals(Intent.ACTION_NEW_OUTGOING_CALL)) {
String number = intent.getStringExtra(Intent.EXTRA_PHONE_NUMBER);
// Validate and start your activity here
// To start an activity from a receiver you need to use the flag FLAG_ACTIVITY_NEW_TASK in your intent
}
Note: After hiding the icon programmatically you might want to finish() the activity so it closes automatically at first run.
P.S I have a working sample of this, so rest assured as I have tested it actually works, sadly I cannot spoon feed you in your final project. Don't hesitate to ask anything tho. Good luck
There is no such functionality in Android. You may be able to do it with a custom home screen, but there is no "hide this app" functionality in the default launcher.
I hope anyone can help me or give me a clear solution,
I have an app that I don't want to be opened directly from the user, so I need to hide its icon.
and in the other hand, I want to access this application from another app (App2), so I wrote this code in the function of onClick of a certain button of App2:
Intent launchIntent = getPackageManager().getLaunchIntentForPackage(package name of the first app );
startActivity(launchIntent);
Before hiding the App1 , everything was working perfectly No errors but after hiding it using the following code, it crashes:
PackageManager packageManager = this.getPackageManager();
ComponentName componentName = new ComponentName(this,FingerActivity.class);
packageManager.setComponentEnabledSetting(componentName, PackageManager.COMPONENT_ENABLED_STATE_DISABLED,
PackageManager.DONT_KILL_APP);
and the following error appear in Android Studio:
Starting: Intent { act=android.intent.action.MAIN
cat=[android.intent.category.LAUNCHER]
cmp=com.neurotec.samples.multibiometric/.fingers.FingerActivity }
Error type 3 Error: Activity class
{com.neurotec.samples.multibiometric/com.neurotec.samples.multibiometric.fingers.FingerActivity}
does not exist.
any idea?
any idea?
You disabled the component. You cannot start the component from any other app.
I have an app that I don't want to be opened directly from the user, so I need to hide its icon.
The simplest way for it to not have an icon is for you to not give it an icon. Change your <intent-filter> for that activity to be something custom for you, rather than having it have the MAIN/LAUNCHER values that causes home screens to put an icon for it in the launcher.
I'm developing an Android app with a button that when that button pressed I want to hide WhatsApp launcher icon. How can I do that?
I know that I should use PakageManager but I have no idea how to use it. I found this code but I have no idea how to use it:
ComponentName componentToDisable = new ComponentName("target package name",
"target launcher activity");
getPackageManager().setComponentEnabledSetting(
componentToDisable,
PackageManager.COMPONENT_ENABLED_STATE_DISABLED,
PackageManager.DONT_KILL_APP);
That is not possible, outside of some security flaw that I don't know of. Your app can disable your own app's components; your app cannot disable the components of other apps.
I am able to reset the default launcher by code with the help of following link
How to reset default launcher/home screen replacement?
Now, I want to set my custom launcher as default launcher. But the following code is not working. It crashes
ComponentName componentName = new ComponentName("com.xxx.launcher", "com.xxx.launcher.LauncheActivity");
PackageManager pm = getPackageManager();
int flag = ((pm.getComponentEnabledSetting(componentName) == PackageManager.COMPONENT_ENABLED_STATE_ENABLED) ? PackageManager.COMPONENT_ENABLED_STATE_DISABLED
: PackageManager.COMPONENT_ENABLED_STATE_ENABLED);
pm.setComponentEnabledSetting(componentName, flag, PackageManager.DONT_KILL_APP); //crash at this line..
I want to set my custom launcher as default launcher
That is not possible. The user can set your home screen as the default home screen, such as by pressing HOME and choosing your app as the default. However, you cannot force the user to accept your home screen as the default.
But the following code is not working. It crashes
That code does not set your "custom launcher as default launcher". That simply controls whether or not you are even a potential option for being a home screen (if you are disabled, you cannot possibly be the home screen).
As to why it is crashing, without a stack trace, that will be difficult to determine.
I'm trying to programatically allow the USER to decide when to remove my app (a theme which is called from another app) from the launcher.
Currently using a button:
getPackageManager().setComponentEnabledSetting(new ComponentName("com.package.name","Main"),PackageManager.COMPONENT_ENABLED_STATE_DISABLED,0);
Sorry I'm not a coder and I'm doing something wrong, the button shows but no effect even with a launcher or phone restart.
Ideas?
OK, I actually found some other similar code which worked.
I had kept intent.category.LAUNCHER and intent.action.MAIN in Main and moved the intent that calls my app from a parent app into a new class (duh).
Then I run the folowing on a button press by which the user can remove the icon from the launcher (requires launcher/phone restart):
PackageManager pm = getPackageManager(); ComponentName name = new ComponentName(this, Main.class);
pm.setComponentEnabledSetting(name, PackageManager.COMPONENT_ENABLED_STATE_DISABLED, 0);
Why is there even a launcher icon (necessary) in the first place? Does a theme need such an icon?
Apart from that: the same question was asked and answered here: you have to restart the launcher itself to update the icon-list.