androidandroid-intentstart-activity

Can't start external application

I've got the following code to start external applications but it's not working:

private fun launchApplication(packageName: String)
{
    try
    {
        val application = packageManager.getLaunchIntentForPackage(packageName)
        startActivity(application)
    }
    catch (ex: Exception) { }
}

I've tried with the following packages:

Any ideas?

EDIT

With the code from @Mayur Gajra it is working with com.google.android.youtube but not with com.teamviewer.quicksupport.market, throwing the following error:

android.content.ActivityNotFoundException: No Activity found to handle Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x4000000 pkg=com.teamviewer.quicksupport.market }

But if i search packages installed with the following code, TeamViewer shows up:

val intent = Intent(Intent.ACTION_MAIN, null)
intent.addCategory(Intent.CATEGORY_LAUNCHER)
val appsList = packageManager.queryIntentActivities(intent, 0)

ResolveInfo{40c33b1 com.teamviewer.quicksupport.market/com.teamviewer.quicksupport.ui.QSActivity m=0x108000}

Any ideas?

Solution

  • Finally resolved with the following code:

    private fun launchApplication(packageName: String)
{
    try
    {
        // Find application with that package name
        val mainIntent = Intent(Intent.ACTION_MAIN, null)
        mainIntent.addCategory(Intent.CATEGORY_LAUNCHER)
        val pkgAppsList = packageManager.queryIntentActivities(mainIntent, 0)
        val application = pkgAppsList.first { it.activityInfo.applicationInfo.packageName == packageName }

        // Start that application
        val intent = Intent()
        intent.setClassName(application.activityInfo.packageName, application.activityInfo.name)
        startActivity(intent)
    }
    catch (ex: Exception) { }
}

    Some aditional comments: this method won't work if application is in Lock Task Mode, remember to call stopLockTask() before.