Android Orientation Resource Loader

OrientationResourceLoader.java

package com.linroid.androidorientation;

import android.app.Activity;
import android.content.Context;
import android.content.pm.ActivityInfo;
import android.content.res.Configuration;
import android.content.res.Resources;
import android.util.DisplayMetrics;

import java.lang.reflect.Method;

/**
 * 指定屏幕方向来加载资源
 * @author linroid <linroid@gmail.com>
 * @since 09/11/2016
 */
public class OrientationResourceLoader {
    public static void load(Activity activity, Callback callback) {
        load(activity, activity.getRequestedOrientation() == ActivityInfo.SCREEN_ORIENTATION_PORTRAIT, callback);
    }

    public static void load(Context context, boolean isPortrait, Callback callback) {
        Resources resources = context.getResources();
        try {
            Method updateConfiguration = resources.getClass()
                    .getMethod("updateConfiguration", Configuration.class, DisplayMetrics.class);
            Configuration configuration = new Configuration(resources.getConfiguration());
            DisplayMetrics displayMetrics = resources.getDisplayMetrics();
            configuration.orientation = isPortrait ? Configuration.ORIENTATION_PORTRAIT : Configuration.ORIENTATION_LANDSCAPE;
            updateConfiguration.invoke(resources, configuration, displayMetrics);
            callback.onLoad(context, resources);
            updateConfiguration.invoke(resources, resources.getConfiguration(), displayMetrics);
        } catch (Exception error) {
            error.printStackTrace();
        }
    }

    interface Callback {
        void onLoad(Context context, Resources resources);
    }
}