How to launch an Activity from another Application in Android

Question

I want to launch an installed package from my Android application  I assume that it is possible using intents  but I didn t find a way of doing it  Is there a link  where to find the information

User · Answer

check for the app if it exist in the phone it will lunch it otherwise  it will search for the app in google play app in the phone and to avoid any crash  if no google play app installed in the phone  it will search for the app in the google play store using the browser      public void onLunchAnotherApp              final String appPackageName   getApplicationContext   getPackageName             Intent intent   getPackageManager   getLaunchIntentForPackage appPackageName           if  intent    null                 intent addFlags Intent FLAG ACTIVITY NEW TASK               startActivity intent              else                onGoToAnotherInAppStore intent  appPackageName                          public void onGoToAnotherInAppStore Intent intent  String appPackageName             try                intent   new Intent Intent ACTION VIEW               intent addFlags Intent FLAG ACTIVITY NEW TASK               intent setData Uri parse  market   details id     appPackageName                startActivity intent              catch  android content ActivityNotFoundException anfe                 intent   new Intent Intent ACTION VIEW               intent addFlags Intent FLAG ACTIVITY NEW TASK               intent setData Uri parse  http   play google com store apps details id     appPackageName                startActivity intent

User · Answer

Edit depending on comment  In some versions - as suggested in comments - the exception thrown may be different    Thus the solution below is slightly modified  Intent launchIntent   null  try     launchIntent   getPackageManager   getLaunchIntentForPackage  applicationId      catch  Exception ignored      if launchIntent    null       startActivity new Intent Intent ACTION VIEW  setData Uri parse  https   play google com store apps details id      applicationId        else       startActivity launchIntent       Original Answer  Although answered well  there is a pretty simple implementation that handles if the app is not installed  I do it like this  try      startActivity getPackageManager   getLaunchIntentForPackage  applicationId       catch  PackageManager NameNotFoundException e        startActivity new Intent Intent ACTION VIEW  setData Uri parse  https   play google com store apps details id      applicationId          Replace  applicationId  with the package that you want to open such as com google maps  etc

User · Answer

in onCreate method String appName    Gmail   String packageName    com google android gm   openApp context  appName  packageName    public static void openApp Context context  String appName  String packageName        if  isAppInstalled context  packageName           if  isAppEnabled context  packageName               context startActivity context getPackageManager   getLaunchIntentForPackage packageName            else Toast makeText context  appName     app is not enabled    Toast LENGTH SHORT  show        else Toast makeText context  appName     app is not installed    Toast LENGTH SHORT  show       private static boolean isAppInstalled Context context  String packageName        PackageManager pm   context getPackageManager        try           pm getPackageInfo packageName  PackageManager GET ACTIVITIES           return true        catch  PackageManager NameNotFoundException ignored              return false     private static boolean isAppEnabled Context context  String packageName        boolean appStatus   false      try           ApplicationInfo ai   context getPackageManager   getApplicationInfo packageName  0           if  ai    null                appStatus   ai enabled                  catch  PackageManager NameNotFoundException e            e printStackTrace              return appStatus

User · Answer

If you know the data and the action the installed package react on  you simply should add these information to your intent instance before starting it   If you have access to the AndroidManifest of the other app  you can see all needed information there

User · Answer

I know this has been answered but here is how I implemented something similar   Intent intent   getPackageManager   getLaunchIntentForPackage  com package name    if  intent    null           We found the activity now start the activity     intent addFlags Intent FLAG ACTIVITY NEW TASK       startActivity intent     else          Bring user to the market or let them choose an app      intent   new Intent Intent ACTION VIEW       intent addFlags Intent FLAG ACTIVITY NEW TASK       intent setData Uri parse  market   details id      com package name         startActivity intent       Even better  here is the method   public void startNewActivity Context context  String packageName        Intent intent   context getPackageManager   getLaunchIntentForPackage packageName       if  intent    null               We found the activity now start the activity         intent addFlags Intent FLAG ACTIVITY NEW TASK           context startActivity intent         else              Bring user to the market or let them choose an app          intent   new Intent Intent ACTION VIEW           intent addFlags Intent FLAG ACTIVITY NEW TASK           intent setData Uri parse  market   details id     packageName            context startActivity intent             Removed duplicate code   public void startNewActivity Context context  String packageName        Intent intent   context getPackageManager   getLaunchIntentForPackage packageName       if  intent    null               Bring user to the market or let them choose an app          intent   new Intent Intent ACTION VIEW           intent setData Uri parse  market   details id     packageName              intent addFlags Intent FLAG ACTIVITY NEW TASK       context startActivity intent

User · Answer

I found the solution  In the manifest file of the application I found the package name  com package address and the name of the main activity which I want to launch  MainActivity The following code starts this application   Intent intent   new Intent Intent ACTION MAIN   intent setComponent new ComponentName  com package address   com package address MainActivity     startActivity intent

User · Answer

It is possible to start an app s activity by using Intent setClassName according to the docs   An example   val activityName    com google android apps muzei MuzeiActivity     target activity name val packageName    net nurik roman muzei     target package s name val intent   Intent   setClassName packageName  activityName  startActivity intent    To open it outside the current app  add this flag before starting the intent   intent addFlags Intent FLAG ACTIVITY NEW TASK    A related answer here

User · Answer

If you don t know the main activity  then the package name can be used to launch the application   Intent launchIntent   getPackageManager   getLaunchIntentForPackage  com package address    if  launchIntent    null         startActivity launchIntent    null pointer check in case package name was not found

User · Answer

If you want to open specific activity of another application we can use this   Intent intent   new Intent Intent ACTION MAIN  null   intent addCategory Intent CATEGORY LAUNCHER   final ComponentName cn   new ComponentName  com android settings    com android settings fuelgauge PowerUsageSummary    intent setComponent cn   intent setFlags Intent FLAG ACTIVITY NEW TASK   try        startActivity intent   catch ActivityNotFoundException e       Toast makeText context  Activity Not Found  Toast LENGTH SHORT  show       If you must need other application  instead of showing Toast you can show a dialog  Using dialog you can bring the user to Play-Store to download required application

User · Answer

Since kotlin is becoming very popular these days  I think it s appropriate to provide a simple solution in Kotlin as well      var launchIntent  Intent    null     try           launchIntent   packageManager getLaunchIntentForPackage  quot applicationId quot         catch  ignored  Exception              if  launchIntent    null            startActivity Intent Intent ACTION VIEW  setData Uri parse  quot https   play google com store apps details id  quot     quot applicationId quot           else           startActivity launchIntent

User · Answer

Here is my example of launching bar QR code scanner from my app if someone finds it useful  Intent intent   new Intent  com google zxing client android SCAN    intent setPackage  com google zxing client android     try        startActivityForResult intent  SCAN REQUEST CODE      catch  ActivityNotFoundException e           implement prompt dialog asking user to download the package     AlertDialog Builder downloadDialog   new AlertDialog Builder this       downloadDialog setTitle stringTitle       downloadDialog setMessage stringMessage       downloadDialog setPositiveButton  yes               new DialogInterface OnClickListener                                  public void onClick DialogInterface dialogInterface  int i                                         Uri uri   Uri parse  market   search q pname com google zxing client android                        Intent intent   new Intent Intent ACTION VIEW  uri                       try                                               myActivity this startActivity intent                                             catch  ActivityNotFoundException e                                                Dialogs this showAlert  ERROR    Google Play Market not found                                                                 downloadDialog setNegativeButton  no               new DialogInterface OnClickListener                                  public void onClick DialogInterface dialog  int i                                         dialog dismiss                                          downloadDialog show

User · Answer

Steps to launch new activity as follows   1 Get intent for package  2 If intent is null redirect user to playstore  3 If intent is not null open activity   public void launchNewActivity Context context  String packageName        Intent intent   null      if  android os Build VERSION SDK INT  gt   android os Build VERSION CODES CUPCAKE            intent   context getPackageManager   getLaunchIntentForPackage packageName             if  intent    null            try               intent   new Intent Intent ACTION VIEW               intent addFlags Intent FLAG ACTIVITY NEW TASK               intent setData Uri parse  market   details id     packageName                context startActivity intent             catch  android content ActivityNotFoundException anfe                startActivity new Intent Intent ACTION VIEW  Uri parse  https   play google com store apps details id     packageName                     else           intent addFlags Intent FLAG ACTIVITY NEW TASK           context startActivity intent

User · Answer

Try code below  Intent intent   new Intent Intent ACTION MAIN   intent setComponent new ComponentName  quot package name quot    quot Class name quot     if  intent resolveActivity getPackageManager       null        startActivity intent

User · Answer

private fun openOtherApp             val sendIntent   packageManager getLaunchIntentForPackage  org mab dhyanaqrscanner           startActivity sendIntent          finishAffinity

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