是否可以在不使用内容提供商的情况下访问另一个APK中的资源？

Question

I thought that it is impossible to access resources contained in other APK unless content providers are used. However, I stumbled upon an app called Better Keyboard. It uses skins, so I decided to download an example of a skin.

An example skin really surprised me. It contains almost no code, declares only an activity and no content providers. Nontheless it contains resources and they are apparently somehow accessed from Better Keyboard app if the APK with the skin gets installed. So how is it done?

Answer 1

I believe you're looking for

Resources res = mPackageManager.getResourcesForApplication("org.example.foo");

http://developer.android.com/reference/android/content/pm/PackageManager.html#getResourcesForApplication%28java.lang.String%29

Answer 2

Try this

 PathClassLoader loader = 
 new PathClassLoader ("/data/app/com.skin.apk", null,PathClassLoader.getSystemClassLoader());
 InputStream f = loader.getResourceAsStream("res/drawable/icon.png");
 Bitmap bitmap=BitmapFactory.decodeStream(f);
 BitmapDrawable b=new BitmapDrawable(bitmap);
 mButton.setBackgroundDrawable(b);

Answer 3

It is possible by using getresoucesforapplication and you need res.getidentifier to retrieve the resource Id. However, It seem not work when retrieving style resource.