Another "how to find className"

Question

I've used the search functions and i've read and tried a lot of examples, but I can't find a solution for my problem... So, here we go:

I want to send Intents to only 1 BroadcastReceiver. Therefore I need to create a new Intent and send it to the packageName and the packageClass:

intent.setComponent(new ComponentName(packageName, className));

To find out packageName and className i use this code:

String appInfo = list.get(myPlayer).activityInfo.toString();
Log.d("TAG", "app " + appInfo);

String packageName = list.get(myPlayer).activityInfo.packageName.toString();    
Log.d("TAG", "package " + packageName);

String className = list.get(myPlayer).activityInfo.getClass().getName().toString();
Log.d("TAG", "class " + className);

From logcat I get following results(example for Play Music):

app ActivityInfo{417bd5e0 com.google.android.music.MediaButtonIntentReceiver}
package com.google.android.music
class android.content.pm.ActivityInfo

Isn't this strange? For some reason, I'd expect for the class log only "MediaButtonIntentReceiver" and not "android.content.pm.ActivityInfo"!!!

Does anybody know how to fix this?

Answer 1

If you're searching for packageName and className for filling ordered broadcast, I really suggest to check content of ResolveInfo object you're probably using

• ResolveInfo contains ActivityInfo object
• ActivityInfo contains ApplicationInfo object
• ApplicationInfo object contain what you need

so in you case, if you need to complete content of intent, I may suggest

    ResolveInfo ri = ... // get where you need
    Intent intent = new Intent();
    intent.setComponent(new ComponentName(
        ri.activityInfo.applicationInfo.packageName,
        ri.activityInfo.applicationInfo.className)); 

this should work for you case

Edit: in cases, you obtained ResolveInfo for specific intent, className should be null. In these cases I successfully use ri.activityInfo.name which returns correct className because activityInfo is for one specific activity

Answer 2

Simply put: getClass() doesn't do what your expect it to do.
However using what you have you can get what you want like so:

String appInfo = list.get(myPlayer).activityInfo.toString();
String className = appInfo.substring(appInfo.lastIndexOf(".") + 1, appInfo.length() - 1);
Log.d("TAG", "class " + className);

---

Notice that packageName is a field of ActivityInfo, not a method. While getClass() is a method, but it's a method of Object, from it's documentation:

Returns the unique instance of Class that represents this object's class.

So you are asking for the name of activityInfo, which is (as you know know) ActivityInfo.

Answer 3

It's not strange at all. Here:

String className = list.get(myPlayer).activityInfo.getClass().getName().toString()

You're getting the class of the ActivityInfo object. I'm not sure exactly what you're trying to do, but that's why you're seeing what you're seeing.