MTK Android 11 Launcher 替换第三方应用图标_iconloaderlib更换图标

背景

系统三方图标规则不统一，第三方应用的 icon 不美观，或者跟系统主题风格不一致，此时就有替换三方 Launcher 图标的需求，需要系统 Launcher 通过包名在程序中替换图标。

核心代码

修改类

frameworks/libs/systemui/iconloaderlib/src/com/android/launcher3/icons/cache
1

方法

 protected CacheEntry cacheLocked(
            @NonNull ComponentName componentName, @NonNull UserHandle user,
            @NonNull Supplier<T> infoProvider, @NonNull CachingLogic<T> cachingLogic,
            boolean usePackageIcon, boolean useLowResIcon) {
            assertWorkerThread();
        ComponentKey cacheKey = new ComponentKey(componentName, user);
        CacheEntry entry = mCache.get(cacheKey);
        if (entry == null || (entry.bitmap.isLowRes() !useLowResIcon)) {
            entry = new CacheEntry();
            if (cachingLogic.addToMemCache()) {
                mCache.put(cacheKey, entry);
            }

            // Check the DB first.
            T object = null;
            boolean providerFetchedOnce = false;

            if (!getEntryFromDB(cacheKey, entry, useLowResIcon)) {
                object = infoProvider.get();
                providerFetchedOnce = true;

                if (object != null) {
                    entry.bitmap = cachingLogic.loadIcon(mContext, object);
                } else {
                    if (usePackageIcon) {
                        CacheEntry packageEntry = getEntryForPackageLocked(
                                componentName.getPackageName(), user, false);
                        if (packageEntry != null) {
                            if (DEBUG) Log.d(TAG, "using package default icon for " +
                                    componentName.toShortString());
                            entry.bitmap = packageEntry.bitmap;
                            entry.title = packageEntry.title;
                            entry.contentDescription = packageEntry.contentDescription;
                        }
                    }
                    if (entry.bitmap == null) {
                        if (DEBUG) Log.d(TAG, "using default icon for " +
                                componentName.toShortString());
                        entry.bitmap = getDefaultIcon(user);
                    }
                }
            }
            f (TextUtils.isEmpty(entry.title)) {
                if (object == null && !providerFetchedOnce) {
                    object = infoProvider.get();
                    providerFetchedOnce = true;
                }
                if (object != null) {
                    entry.title = cachingLogic.getLabel(object);
                    entry.contentDescription = mPackageManager.getUserBadgedLabel(
                            cachingLogic.getDescription(object, entry.title), user);
                }
            }
        }

  // **替换修改图标 start **
  if("替换应用的包名".equals(componentName.getPackageName().toString())) {
            entry.bitmap = BitmapInfo.of(BitmapFactory.decodeResource(mContext.getResources(),
                    mContext.getResources().getIdentifier("替换应用的图标", "mipmap", mContext.getPackageName())), 0);
   } 
   // **替换修改图标 end.**
   return entry;
}
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编译刷机，可以看到第三方应用图标已经替换成功，此方法经过验证有效，希望能帮到做系统开发的同学，大家多多交流，欢迎大家留言！