How to call one android application from another android application

Question

I want to call one android application from another application

I have tried some examples, but they are not working for me, I\'m getting a Package parse error.

Answer 1

Are you trying to launch an application that is not installed? It looks like you're trying to execute an app by passing app1 the location of the .apk file for app2 on the sd card - this won't work. The Android OS will know how to invoke app2 via Intents only after the user has installed it (consider the security risks if you could just invoke any arbitrary code sitting on the sd card).

Assuming app1 and app2 are installed, look at the AndroidManifest.xml file for app2. This file will indicate what kind of Intents it will respond to.

see http://developer.android.com/guide/topics/intents/intents-filters.html#npex for a good example.

Please show us the AndroidManifest.xml file for app2 if you need more help.

Answer 2

private void handleCallGooglePlay(Activity mActivity, String packageClass) {
        try {
            mActivity.startActivity(new Intent("android.intent.action.VIEW", Uri.parse("market://details?id=" + packageClass)));
        } catch (Exception var4) {
            mActivity.startActivity(new Intent("android.intent.action.VIEW", Uri.parse(package_name)));  //package name
        }
    }

Answer 3

I think this code will help:

Intent intent = new Intent(Intent.ACTION_RUN);
intent.setComponent(new ComponentName("<packet name>", "<class name>"));
List list = packageManager.queryIntentActivities(intent, packageManager.COMPONENT_ENABLED_STATE_DEFAULT);

if(list.size() > 0)
{
 Log.i("Log", "Have application" + list.size());
 startActivity(intent);
}
else
{
    Log.i("Log", "None application");
}

Answer 4

Intent i4=new Intent(Intent.ACTION_MAIN);

PackageManager manager = getPackageManager();

i4 = manager.getLaunchIntentForPackage("com.apk");//apk name

i4.addCategory(Intent.CATEGORY_LAUNCHER);

startActivity(i4);