Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.List;
import android.annotation.TargetApi;
import android.app.Activity;
import android.content.res.Configuration;
import android.os.Build;
import android.os.IBinder;

public class Main {
    public static void recreate(Activity activity) {
        if (Build.VERSION.SDK_INT > Build.VERSION_CODES.GINGERBREAD_MR1) {
            recreateHC(activity);
        } else {
            try {
                recreateGB(activity);
            } catch (InvocationTargetException e) {
                e.getTargetException().printStackTrace();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }

    @TargetApi(Build.VERSION_CODES.HONEYCOMB)
    private static void recreateHC(Activity activity) {
        ((Activity) activity).recreate();
    }

    private static void recreateGB(Activity activity) throws IllegalArgumentException, IllegalAccessException,
            NoSuchMethodException, InvocationTargetException {
        Field Activity$mToken = scanField(Activity.class, "mToken");
        IBinder mToken = (IBinder) Activity$mToken.get(activity);
        Field Activity$mMainThread = scanField(Activity.class, "mMainThread");
        Object mMainThread = Activity$mMainThread.get(activity);
        Field ActivityThread$mAppThread = scanField(mMainThread.getClass(), "mAppThread");
        Object mAppThread = ActivityThread$mAppThread.get(mMainThread);
        // @formatter:off
        Method method = mAppThread.getClass().getMethod("scheduleRelaunchActivity", IBinder.class, List.class,
                List.class, int.class, boolean.class, Configuration.class);
        // @formatter:on
        method.invoke(mAppThread, mToken, null, null, 0, false, null);
    }

    private static Field scanField(Class<?> clazz, String... names) {
        for (String name : names) {
            try {
                final Field field = clazz.getDeclaredField(name);
                field.setAccessible(true);
                return field;
            } catch (NoSuchFieldException e) {
            }
            try {
                return clazz.getField(name);
            } catch (NoSuchFieldException e) {
            }
        }
        return null;
    }
}