How to launch an Activity from another Application in Android

JavaAndroidKotlinAndroid Intent

Java Problem Overview

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?

Java Solutions

Solution 1 - Java

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
}

Solution 2 - Java

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);
}

Solution 3 - Java

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);

Solution 4 - Java

// 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;
}

Solution 5 - Java

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.

Solution 6 - Java

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();
}

Solution 7 - Java

// 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);

        }

    }

Solution 8 - Java

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.

Solution 9 - Java

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

Solution 10 - Java

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.

Solution 11 - Java

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 >= 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);
    }
}

Solution 12 - Java

private fun openOtherApp() {
        val sendIntent = packageManager.getLaunchIntentForPackage("org.mab.dhyanaqrscanner")
        startActivity(sendIntent)
        finishAffinity()
    }

Solution 13 - Java

Starting from API 30 (Android 11) you can receive nullpointerexception with launchIntentForPackage

val launchIntent: Intent? = activity.packageManager.getLaunchIntentForPackage("com.google.android.gm")
startActivity(launchIntent)

To avoid this you need to add the needed package to the manifest

<queries>
    <package android:name="com.google.android.gm" />
</queries>

Here is documentation https://developer.android.com/training/package-visibility

And the medium article https://medium.com/androiddevelopers/package-visibility-in-android-11-cc857f221cd9

Solution 14 - Java

Try code below:

Intent intent = new Intent(Intent.ACTION_MAIN);
intent.setComponent(new ComponentName("package_name", "Class_name"));
if (intent.resolveActivity(getPackageManager()) != null) 
{
   startActivity(intent);
}

Solution 15 - Java

In Kotlin

fun openApplicationOrMarket(packageName: String) {
        var intent = requireContext().packageManager.getLaunchIntentForPackage(packageName)
        if (intent == null) {
            intent = Intent(Intent.ACTION_VIEW)
            intent.data = Uri.parse("market://details?id=$packageName")
        }

        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
        requireContext().startActivity(intent)
    }

Solution 16 - Java

Pass the package name and the message you want to show if package isn't installed ;-)

void openApp(String appPackageName,String message){
    Intent launchIntent = getPackageManager().getLaunchIntentForPackage(appPackageName);
    if (launchIntent != null) {
        startActivity(launchIntent);
    } else {
        Toast.makeText(MainActivity.this, message, Toast.LENGTH_LONG).show();
        startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse("https://play.google.com/store/apps/details?id=" + appPackageName)));
    }
}

Solution 17 - Java

This will cover all scenarios

1.Get intent for package

2.If intent is null redirect user to playstore

3.If there is an issue with open playstore, then it opens on the default browser.

var intent = activity!!.packageManager.getLaunchIntentForPackage("com.google.android.youtube")

          if (intent == null) {
            if (intent == null) {
                    intent = try {
                        Intent(Intent.ACTION_VIEW, Uri.parse("market://details?id=com.google.android.youtube"))
                    } catch (e: Exception) {
                        Intent(Intent.ACTION_VIEW, Uri.parse("https://play.google.com/store/apps/details?id=com.google.android.youtube"))
                    }
                }
             startActivity(intent)

For Android 11 (API level 30) or higher, in AndroidManifest.xml,

<queries>
    <package android:name="com.google.android.youtube" />
    <package android:name="com.example.app" />
</queries>

Or simply we can allow for all packages (not recommended)

<uses-permission android:name="android.permission.QUERY_ALL_PACKAGES" tools:ignore="QueryAllPackagesPermission" />

References

Package visibility filtering on Android

Declaring package visibility needs

Solution 18 - Java

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("applicationId")
} catch (ignored: Exception) {
}
if (launchIntent == null) {
    startActivity(Intent(Intent.ACTION_VIEW).setData(Uri.parse("https://play.google.com/store/apps/details?id=" + "applicationId")))
} else {
    startActivity(launchIntent)
}

Solution 19 - Java

In Kotlin launch another application from your current activity using this code

       var intent = packageManager.getLaunchIntentForPackage("com.bankid.bus")


       //var intent = this.packageManager.getLaunchIntentForPackage("com.bankid.bus")
        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 = Intent(Intent.ACTION_VIEW)
            intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
            intent.data = Uri.parse("market://details?id=" + "com.bankid.bus")
            startActivity(intent)
        }

For android version 10+ you also need to add tag in AndroidManifest.xml file otherwise getLaunchIntentForPackage() will return null i.e.

<queries> <package android:name="com.bankid.bus" /> </queries>
Categories
Recommended Java Solutions
Recommended Android Solutions
Recommended Kotlin Solutions
Recommended Android Intent Solutions

Previous Solution:

How can I trigger an onchange event manually?

JavascriptEvent HandlingDom Events

Next Solution:

MySQL select 10 random rows from 600K rows fast

MysqlSqlRandom

Attributions

All content for this solution is sourced from the original question on Stackoverflow.

The content on this page is licensed under the Attribution-ShareAlike 4.0 International (CC BY-SA 4.0) license.

Content TypeOriginal AuthorOriginal Content on Stackoverflow
QuestionBastianView Question on Stackoverflow
Solution 1 - JavaandepView Answer on Stackoverflow
Solution 2 - JavaJared BurrowsView Answer on Stackoverflow
Solution 3 - JavaBastianView Answer on Stackoverflow
Solution 4 - JavaAhamadullah SaikatView Answer on Stackoverflow
Solution 5 - Javamayank1513View Answer on Stackoverflow
Solution 6 - JavaTine M.View Answer on Stackoverflow
Solution 7 - JavaKarima EngineerView Answer on Stackoverflow
Solution 8 - JavaVignesh KMView Answer on Stackoverflow
Solution 9 - JavaPhani RithvijView Answer on Stackoverflow
Solution 10 - JavaWarrenFaithView Answer on Stackoverflow
Solution 11 - JavaSharath kumarView Answer on Stackoverflow
Solution 12 - JavaMirza Ahmed BaigView Answer on Stackoverflow
Solution 13 - JavaJoaoView Answer on Stackoverflow
Solution 14 - JavaBibin BabyView Answer on Stackoverflow
Solution 15 - JavakulikovmanView Answer on Stackoverflow
Solution 16 - JavaTechie VineetView Answer on Stackoverflow
Solution 17 - JavaChethana ArunodhView Answer on Stackoverflow
Solution 18 - Javamayank1513View Answer on Stackoverflow
Solution 19 - JavaMuhammad Etisam ZafarView Answer on Stackoverflow