• Android之基于AssetManager实现换肤方案


    AssetManager的addAssetPath负责将另一个apk的资源文件加载进当前应用,这里由于是api隐藏方法,采用反射方式调用。
    查看addAssetPath方法注释,允许传递的路径为资源目录或者zip文件。
    /**
    * Add an additional set of assets to the asset manager. This can be
    * either a directory or ZIP file. Not for use by applications. Returns
    * the cookie of the added asset, or 0 on failure.
    * {@hide}
    */
    通过实例化的AssetManager对象,生成插件包对应的Resources对象,拿到该对象即可操作插件包的相关资源文件。
    private Resources pluginRes;//插件Resource对象
    private String pluginApkPackageName;//插件Apk的包名

    public ResPluginOnAssetManagerPattern initManager(Context curContext, String pluginApkPath) throws IllegalAccessException, InstantiationException, NoSuchMethodException, InvocationTargetException, PackageManager.NameNotFoundException, ClassNotFoundException {
    AssetManager assetManager = AssetManager.class.newInstance();
    Method addAssetPath = assetManager.getClass().getMethod("addAssetPath", String.class);
    addAssetPath.invoke(assetManager, pluginApkPath);

    Resources curAppRes = curContext.getResources();
    pluginRes = new Resources(assetManager, curAppRes.getDisplayMetrics(), curAppRes.getConfiguration());
    pluginApkPackageName = UtilsSystem.getPackageNameThroughApkPath(curContext, pluginApkPath);
    return this;
    }
    想要获取插件包的资源,可以通过以下方式引用(这里仅给出string以及drawable的调用方式,其他资源类似):
    /**
    * 获取ResID
    *
    * @param resName
    * @param resType
    * @return
    */
    private int getResId(String resName, String resType) {
    if (pluginRes != null && !UtilsString.isEmptyBaseTrim(pluginApkPackageName)) {
    return pluginRes.getIdentifier(resName, resType, pluginApkPackageName);
    }
    return -1;
    }

    @Override
    public String getString(String resName) {
    return pluginRes.getString(getResId(resName, "string"));
    }

    @Override
    public Drawable getDrawable(String resName) {
    return pluginRes.getDrawable(getResId(resName, "drawable"));
    }

    源码地址:https://github.com/xiaoxuan948/AndroidUnityLab/tree/master/unity_base_dev_helper/src/main/java/com/coca/unity_base_dev_helper/plugin





  • 相关阅读:
    数组的反转和二维数组
    初识数组
    Python学习笔记-Day8
    Python学习笔记-Day7
    Python学习笔记-Day6
    Python学习笔记-Day5
    Python学习笔记-Day4
    Python学习笔记-Day3
    Python学习笔记-Day2
    Python学习笔记-Day1
  • 原文地址:https://www.cnblogs.com/linux007/p/5806308.html
Copyright © 2020-2023  润新知