How to get a Context from everywhere

package com.xxx.xxx; // replace with your own package

import java.lang.reflect.Method;

import java.lang.reflect.Method;
import android.content.Context;
import android.util.Log;
import com.saurik.substrate.MS;

public class Main {
   static void initialize() {
        MS.hookClassLoad("android.app.ContextImpl", new MS.ClassLoadHook() {
            public void classLoaded(Class<?> _clazz) {
                hookGetSystemContext(_clazz);
            }
        });
    }

    protected static void hookGetSystemContext(Class<?> _clazz) {
        Method method;
        try {
            Class<?>[] params = new Class[1];
            params[0] = String.class;

            method = _clazz.getMethod("getSystemService", params);
        } catch (NoSuchMethodException e) {
            method = null;
            Log.d("ERROR", Log.getStackTraceString(e));
        }

        if (method != null) {

            MS.hookMethod(_clazz, method,
                    new MS.MethodAlteration<Context, Object>() {

                        public Object invoked(final Context hooked,
                                final Object... args) throws Throwable {
                            context = hooked.getApplicationContext();
                            return invoke(hooked, args);
                        }
                    });
        }
    }
}