Android 删除SD卡中的文件和文件夹

//folderPath为文件路径

public void delFolder(String folderPath) {

        try {

                delAllFile(folderPath); //删除完里面所有内容

                String filePath = folderPath;

                filePath = filePath.toString();

                java.io.File myFilePath = new java.io.File(filePath);

                myFilePath.delete(); //删除空文件夹

        }

        catch (Exception e) {

                System.out.println("删除文件夹操作出错");

                e.printStackTrace();

        }  

}

public void delAllFile(String path) {
        File file = new File(path);
        if (!file.exists()) {
                return;
        }
        if (!file.isDirectory()) {
         return;
        }
        String[] tempList = file.list();
        File temp = null;
        for (int i = 0; i < tempList.length; i++) {
                if (path.endsWith(File.separator)) {
                        temp = new File(path + tempList[i]);
                }
                else {
                        temp = new File(path + File.separator + tempList[i]);
                }
                if (temp.isFile()) {
                        temp.delete();
                }
                if (temp.isDirectory()) {
                        delAllFile(path+"/"+ tempList[i]);//先删除文件夹里面的文件
                        delFolder(path+"/"+ tempList[i]);//再删除空文件夹
                }
        }
 }