Android 复制拷贝 Assets 下的文件夹或文件到 SD 卡（copy directory from assets to sdcard android）

支持 Assets 下的文件或者文件夹拷贝到手机存储

    public static void copyAssetsDirToSDCard(Context context, String assetsDirName, String sdCardPath) {Log.d(TAG, "copyAssetsDirToSDCard() called with: context = [" + context + "], assetsDirName = [" + assetsDirName + "], sdCardPath = [" + sdCardPath + "]");try {String list[] = context.getAssets().list(assetsDirName);if (list.length == 0) {InputStream inputStream = context.getAssets().open(assetsDirName);byte[] mByte = new byte[1024];int bt = 0;File file = new File(sdCardPath + File.separator+ assetsDirName.substring(assetsDirName.lastIndexOf('/')));if (!file.exists()) {file.createNewFile();} else {return;}FileOutputStream fos = new FileOutputStream(file);while ((bt = inputStream.read(mByte)) != -1) {fos.write(mByte, 0, bt);}fos.flush();inputStream.close();fos.close();} else {String subDirName = assetsDirName;if (assetsDirName.contains("/")) {subDirName = assetsDirName.substring(assetsDirName.lastIndexOf('/') + 1);}sdCardPath = sdCardPath + File.separator + subDirName;File file = new File(sdCardPath);if (!file.exists())file.mkdirs();for (String s : list) {copyAssetsDirToSDCard(context, assetsDirName + File.separator + s, sdCardPath);}}} catch (Exception e) {e.printStackTrace();}}

支持 Assets 以下混合文件和文件夹结构拷贝到手机存储