Android：如何从扩展应用程序的 class 将应用程序上下文作为活动获取？

Question

How do I retrieve the Application Context as an Activity in class that extends Application? I need to retrieve the context as an Activity so that I can broadcast PendingIntent s. My current code is:

public class SharedResources extends Application {
    private static Activity context;

    @Override
    public void onCreate() {
        super.onCreate();

        context = (Activity) getApplicationContext();
    }
}

But I get an error, stating that my class SharedResources cannot be cast to android.app.Activity .

Answer 1

You don't need activity context for shared preferences. You can get the shared preferences instance in the following manner also.

SharedPreferences pref = getApplicationContext().getSharedPreferences("YOUR_SHARED_PREF_NAME", 0)

SharedPreferences just needs a context object, not activity context.