Android Question how to open other app from Service or swith myself?

xiaoyao

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when i run in service, i wanto show my app.main activity ,how to do?
OPENAPP(Application.PackageName)??

Sub OPENAPP(PACKNAME As String )
B4X: 
Sub OPENAPP(PACKNAME As String )
    'GOOD
    Try
        Dim Intent1 As Intent
        Dim pm As PackageManager
        Intent1 = pm.GetApplicationIntent (PACKNAME)
        StartActivity (Intent1)
    Catch
        ToastMessageShow ("Failed to launch app!  Is it installed?", True)
    End Try
    
End Sub
 
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xiaoyao

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like this,but can't find answer:
Bringing my app to the front | B4X Programming Forum

Bringing my app to the front

Hi all. I have a service that is running and what I want to do is at a certain time bring my paused activity to the front. How do I do this? Thanks.
www.b4x.com

Android provides a simple way to switch an application from the background to the foreground by sending an Intent and starting an Activity. We can use the following code to achieve this function:


Intent intent = new Intent(context, MainActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(intent);

In the above code, MainActivity is the class name of the Activity we want to start, and context is the current context.

This code will create a new task stack and add MainActivity to the task stack. It will then display the task stack to the foreground and display the MainActivity.

Method 2: Use ActivityManager
Another way is to use the ActivityManager class to switch the application to the foreground. This method is relatively complex, but allows for more fine-grained control. Here is sample code:

ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
List<ActivityManager.RunningAppProcessInfo> processes = am.getRunningAppProcesses();

for (ActivityManager.RunningAppProcessInfo process : processes) {
if (process.processName.equals(context.getPackageName())) {
am.moveTaskToFront(process.pid, 0);
break;
}
 
Last edited:
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Sagenut

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xiaoyao

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Longtime User
what's Draw Over Apps permission?

if i make a app top in android desktop like a icon of i small window?maybe i click it ,will show main activity?
 
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