285 lines
12 KiB
Java
285 lines
12 KiB
Java
package com.mogo.skin;
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import android.app.Activity;
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import android.app.Application;
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import android.content.Context;
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import android.content.pm.PackageInfo;
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import android.content.pm.PackageManager;
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import android.content.res.AssetManager;
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import android.content.res.Resources;
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import android.text.TextUtils;
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import android.util.Log;
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import android.widget.Toast;
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import com.mogo.skin.net.DownloadManager;
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import com.mogo.skin.utils.FileUtils;
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import com.mogo.skin.utils.SkinPreference;
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import com.mogo.skin.utils.SkinResources;
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import com.mogo.skin.utils.SkinUtils;
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import java.io.File;
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import java.lang.reflect.Method;
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import java.util.Observable;
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/**
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* donghongyu
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*/
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public class SkinManager extends Observable {
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private static String TAG = "SkinManager";
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private static Application mApplication;
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private static SkinManager instance;
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/**
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* 皮肤加载回调监听
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*/
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private SkinLoadListener mSkinLoadListener;
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/**
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* Activity生命周期回调
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*/
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private SkinActivityLifecycle skinActivityLifecycle;
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private Application application;
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/**
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* 注意首次初始化时需要从配置文件读取使用哪个皮肤,然后应用
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*
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* @param application
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*/
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public static void init(Application application) {
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synchronized (SkinManager.class) {
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if (null == instance) {
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Log.d(TAG, "SkinManager init …………");
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mApplication = application;
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instance = new SkinManager(application);
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}
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}
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}
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public static SkinManager getInstance() {
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return instance;
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}
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private SkinManager(Application application) {
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this.application = application;
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//记录当前使用的皮肤
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SkinPreference.init(application);
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//资源管理类 用于从 app/皮肤 中加载资源
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SkinResources.init(application);
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//注册Activity生命周期,并设置被观察者
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skinActivityLifecycle = new SkinActivityLifecycle();
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application.registerActivityLifecycleCallbacks(skinActivityLifecycle);
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// 加载皮肤，如果为空则为APP内默认皮肤
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loadSkin(SkinPreference.getInstance().getSkin());
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}
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/**
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* 记载皮肤并应用
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*
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* @param skinPath 皮肤路径 如果为空则使用默认皮肤
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*/
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public void loadSkin(String skinPath) {
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Log.d(TAG, "加载皮肤路径：" + skinPath);
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if (TextUtils.isEmpty(skinPath)) {
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Log.d(TAG, "皮肤包路径为空，还原默认皮肤包,开始还原换肤。");
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//还原默认皮肤包
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SkinPreference.getInstance().setSkin("");
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SkinResources.getInstance().reset();
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//应用皮肤包
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setChanged();
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//通知观察者
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notifyObservers();
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}
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// 加载指定目录下的皮肤
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else {
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// 判断是否已经加载同样皮肤，如果已经加载则不再重复加载，防止因为重复加载导致ImageView之类的设置了src、background的控件被重制
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try {
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Log.d(TAG, "皮肤路径非空,开始换肤。");
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//反射创建AssetManager 与 Resource
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AssetManager assetManager = AssetManager.class.newInstance();
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// 资源路径设置 目录或压缩包
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Method addAssetPath = assetManager.getClass().getMethod("addAssetPath", String.class);
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addAssetPath.setAccessible(true);
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int result = (int) addAssetPath.invoke(assetManager, skinPath);
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if (result == 0) {
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Log.e(TAG, "加载皮肤APK失败：" + skinPath);
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} else {
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Log.d(TAG, "加载皮肤APK成功：" + skinPath);
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// 获取当前Resources
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Resources resources = application.getResources();
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//根据当前的设备显示器信息 与 配置(横竖屏、语言等) 创建Resources
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Resources skinResource = new Resources(assetManager, resources.getDisplayMetrics(), resources.getConfiguration());
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// 获取外部Apk(皮肤包) 包名
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PackageManager mPm = application.getPackageManager();
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PackageInfo info = mPm.getPackageArchiveInfo(skinPath, PackageManager.GET_ACTIVITIES);
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String packageName = info.packageName;
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SkinResources.getInstance().applySkin(skinResource, packageName);
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//保存当前使用的皮肤包
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SkinPreference.getInstance().setSkin(skinPath);
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//应用皮肤包
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setChanged();
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//通知观察者
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notifyObservers();
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}
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} catch (Exception e) {
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e.printStackTrace();
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}
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}
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}
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public void updateSkin(Activity activity) {
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skinActivityLifecycle.updateSkin(activity);
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}
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/**
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* 下载皮肤包
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*/
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public void downloadSkin(Context context, Skin skin, SkinLoadListener skinLoadListener) {
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File theme = new File(FileUtils.getExternalAppDirectory(context), "theme");
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if (theme.exists() && theme.isFile()) {
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Log.w(TAG, "皮肤包 目录已存在，但是文件类型，删除。");
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theme.delete();
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theme.mkdirs();
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}
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if (!theme.exists()) {
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Log.w(TAG, "皮肤包 存储目录不存在，创建 " + theme.getAbsolutePath());
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theme.mkdirs();
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}
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// 打印文件夹内的文件
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FileUtils.listFilesForFolder(theme);
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// 获取皮肤插件文件对象
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File skinFile = skin.getSkinFile(theme);
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// 判断是否存在
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if (FileUtils.fileIsExists(theme, skin.getSkinFileName())) {
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// 检验皮肤包完整性，即MD5是否一致，不一致则删除
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String localSkinFileMd5 = SkinUtils.getSkinMD5(skinFile);
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if (!TextUtils.equals(localSkinFileMd5, skin.md5)) {
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Log.w(TAG, "皮肤包 皮肤文件 MD5校验出错, 本地文件 MD5 = " + localSkinFileMd5 + " 与云端文件 MD5 = " + skin.md5 + " 不一致。删除本地皮肤包，重新下载。");
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skinFile.delete();
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} else {
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Log.d(TAG, "皮肤包 皮肤文件 MD5校验成功, 本地文件 MD5 =" + localSkinFileMd5 + " 与云端文件 MD5 = " + skin.md5 + " 开始换肤……skin=" + skin);
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SkinManager.getInstance().loadSkin(skin.getPathLocal());
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return;
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}
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}
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Log.w(TAG, "皮肤不存在,开始下载……skin=" + skin);
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DownloadManager manager = getDownloadManager(skin, theme, skinLoadListener);
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// 启动文件下载
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manager.startDownload();
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}
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private static DownloadManager getDownloadManager(Skin skin, File themeDirectory, SkinLoadListener skinLoadListener) {
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DownloadManager.DownloadListener downloadListener = new DownloadManager.DownloadListener() {
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@Override
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public void onProgressUpdate(int progress) {
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// 更新UI或日志
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Log.d(TAG, "皮肤包下载进度 onProgressUpdate progress = " + progress);
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}
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@Override
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public void onDownloadSuccess() {
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// 下载成功后的处理
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Log.d(TAG, "皮肤包 下载成功 onDownloadSuccess");
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File skinFile = skin.getSkinFile(themeDirectory);
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try {
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//下载成功，将皮肤包信息insert已下载数据库
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Log.d(TAG, "皮肤包下载完成开始校验……");
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//皮肤包的md5校验 防止下载文件损坏(但是会减慢速度。从数据库查询已下载皮肤表数据库中保留md5字段)
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String localSkinFileMd5 = SkinUtils.getSkinMD5(skinFile);
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if (TextUtils.equals(localSkinFileMd5, skin.md5)) {
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Log.d(TAG, "皮肤包 MD5 校验成功，本地文件 MD5 = " + localSkinFileMd5 + " 与云端文件 MD5 = " + skin.md5 + " ，删除其它皮肤包。");
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// 加载指定皮肤包
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SkinManager.getInstance().loadSkin(skin.getPathLocal());
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// 校验文件签名没问题后删除其他主题
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deleteFilesExcept(themeDirectory, skin.getSkinFileName());
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// 回调给使用方成功
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skinLoadListener.onLoadSuccess();
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} else {
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Log.e(TAG, "皮肤包 皮肤文件 MD5校验出错, 本地文件 MD5 = " + localSkinFileMd5 + " 与云端文件 MD5 = " + skin.md5 + " 不一致，删除皮肤包。");
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Toast.makeText(mApplication, "皮肤文件校验出错,本地文件 MD5 = " + localSkinFileMd5 + " 与云端文件 MD5 = " + skin.md5 + " 不一致，删除皮肤包。", Toast.LENGTH_LONG).show();
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// TODO 删除本地皮肤文件，并重新下载（这个操作比较危险，需要严格保证配置文件中的md5与实际皮肤包一致，否则将是灾难）
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skinFile.delete();
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// 回调给使用方成功
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skinLoadListener.onLoadFailed(new Exception("皮肤文件校验出错,本地文件MD5 与云端文件MD5 不一致。"));
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}
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} catch (Exception e) {
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skinLoadListener.onLoadFailed(e);
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e.printStackTrace();
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}
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}
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@Override
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public void onDownloadFailed(Exception e) {
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// 下载失败后的处理
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Log.e(TAG, "皮肤包下载出错 onDownloadFailed");
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skinLoadListener.onLoadFailed(e);
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e.printStackTrace();
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}
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@Override
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public void onAlreadyDownloading(String url) {
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// 处理重复下载的情况
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Log.w(TAG, "皮肤包 onAlreadyDownloading url=" + url);
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skinLoadListener.onLoadFailed(new Exception("DownloadManager onAlreadyDownloading url=" + url));
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}
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};
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return new DownloadManager(skin.url, skin.getSkinFileName(), themeDirectory, downloadListener);
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}
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public static void deleteFilesExcept(File directory, String fileNameToKeep) {
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if (directory == null || !directory.exists() || !directory.isDirectory()) {
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Log.e(TAG, "Provided path is not a valid directory: " + directory);
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}
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// 获取目录下的所有文件和子目录
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File[] files = directory.listFiles();
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if (files != null) {
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for (File file : files) {
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// 如果文件名不等于要保留的文件名，并且不是目录，则删除
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if (!file.getName().equals(fileNameToKeep) && !file.isDirectory()) {
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if (file.delete()) {
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Log.d(TAG, "Deleted file=" + file.getAbsolutePath());
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} else {
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Log.e(TAG, "Failed to delete file=" + file.getAbsolutePath());
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}
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}
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}
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}
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}
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public static boolean renameFile(File oldFile, String newFilePath) {
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File newFile = new File(newFilePath);
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// 如果旧文件不存在，则直接返回 false
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if (!oldFile.exists()) {
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return false;
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}
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// 尝试重命名文件
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return oldFile.renameTo(newFile);
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}
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/**
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* 皮肤加载回调
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*/
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public interface SkinLoadListener {
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void onLoadSuccess();
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void onLoadFailed(Exception e);
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}
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}
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