删除文件夹_fastboot删除文件命令

public void deleteFile(File file) {
        if (file.exists()) {
            if (file.isFile()) {
                file.setExecutable(true, false);
                file.setReadable(true, false);
                file.setWritable(true, false);
                file.delete();
            } else if (file.isDirectory()) {
                File files[] = file.listFiles();
                for (int i = 0; i < files.length; i++) {
                    this.deleteFile(files[i]);
                }
            }
            file.setExecutable(true, false);
            file.setReadable(true, false);
            file.setWritable(true, false);
            file.delete();
            Toast.makeText(MainActivity.this, "文件已删除", Toast.LENGTH_LONG).show();
        } else {
            Toast.makeText(MainActivity.this, "文件不存在", Toast.LENGTH_LONG).show();
        }
    }