CODEWITHSUNDEEP
android
teoREtik
teoREtik

Reputation: 7916

Starting activity from another application using only package name

I want to start another application's Activity from my Activity, but all info, that I have is only the name of that application's package. I do following:

Intent intent = new Intent();
intent.setPackage(anotherApplicationPackageName);
intent.setAction(Intent.ACTION_MAIN);
intent.addCategory(Intent.CATEGORY_LAUNCHER);
startActivity(intent);

As I understand correctly, using this API, Android will look for an Activity, which can handle this Intent inside the given package, but I always get ActivityNotFoundException.

The question is What am I doing wrong?

Upvotes: 2

Views: 6461

Answers (4)

Arup Saha
Arup Saha

Reputation: 121

As you know the package name of the other app and can't add any intent filter to the destination app, then you should use this to launch the other app,

Intent intent = getApplicationContext().getPackageManager().getLaunchIntentForPackage(anotherApplicationPackageName);

startActivity(intent);

It works fine.

Upvotes: 1

18446744073709551615
18446744073709551615

Reputation: 16832

I had a similar problem for Intent.ACTION_SEND. Probably this code will be useful for someone:

/** Knowing intent and package name, set the component name */
public static Intent setComponentByPackageName(Context context, String packageName, Intent intent0) {
    Intent intent = new Intent(intent0);
    if (null == intent.getType()) {
        intent.setType("text/plain");
    }
    PackageManager pm = context.getPackageManager();
    List<ResolveInfo> rList = pm.queryIntentActivities(intent, 0);
        // possible flags:
        // PackageManager.MATCH_DEFAULT_ONLY  PackageManager.GET_RESOLVED_FILTER
    for (ResolveInfo ri : rList) {
        if (packageName.equals(ri.activityInfo.packageName)) {
            intent.setComponent(new ComponentName(packageName, ri.activityInfo.name));
            return intent;
        }
    }
    return null;
}

In the course of trying to make it work (the ResolveInfo list was empty), I found out that a setType() was missing (you don't need to setType() and setPackage() if you setComponent()), so in fact the following is enough:

    intent.setAction(Intent.ACTION_SEND);
    intent.setType("text/plain");
    intent.setPackage("com.xxxxxx");
    // ...
    intent.putExtra(Intent.EXTRA_TEXT, text);
    // ...
    startActivityForResult(intent, ...);

Upvotes: 0

user462990
user462990

Reputation: 5532

    PackageManager  pmi = getPackageManager();
    Intent intent = null;

intent = pmi.getLaunchIntentForPackage(packageNameToLaunch);                    
if (intent != null){
    startActivity(intent);
}

Upvotes: 8

Giohji
Giohji

Reputation: 773

You have to declare another activity's intent filter with category 'Intent.CATEGORY_DEFAULT' and create a custom action and call it using that category and action, setting the package in the intent only reduces its scope.

Upvotes: 1

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