【Android】删除某目录下文件

private void deleteAllFiles(File root) {File files[] = root.listFiles();if (files != null)for (File f : files) {if (f.isDirectory()) { // 判断是否为文件夹deleteAllFiles(f);try {f.delete();} catch (Exception e) {}} else {if (f.exists()) { // 判断是否退出（未被使用）deleteAllFiles(f);try {f.delete();} catch (Exception e) {}}}}}