android关于获取SD卡手机内存的容量

 /**
     * 获取SD的信息的方法
     */
    private void getSd() {
        // TODO Auto-generated method stub
        File path=Environment.getExternalStorageDirectory();
        StatFs stat=new StatFs(path.getPath());
        long blockSize=stat.getBlockSize();
        long totalBlacks=stat.getBlockCount();
        long availableBlocks=stat.getAvailableBlocks();
        
        long totalSize=blockSize*totalBlacks;
        long availSize=availableBlocks*blockSize;
        
        
        String totalStr=Formatter.formatFileSize(MainActivity.this, totalSize);
        String availStr=Formatter.formatFileSize(MainActivity.this, availSize);
        
        mTextViewShow.setText("Sd卡的总的容量是"+totalStr+"\n"+"SD卡的可用容量是"+availStr);
    }

//android获取手机内存的方法

         /**
     * 获取手机内存的方法
     * @return
     */
    private String getRomSpaceInfo() {
        File path=Environment.getDataDirectory();
        StatFs stat=new StatFs(path.getPath());
        long blockSize=stat.getBlockSize();
        long totalBlocks=stat.getBlockCount();
        long availableBlocks=stat.getAvailableBlocks();
        
        long totalSize=blockSize*totalBlocks;
        long availSize=availableBlocks*blockSize;
        
        String totalStr=Formatter.formatFileSize(MainActivity.this, totalSize);
        String availStr=Formatter.formatFileSize(MainActivity.this, availSize);
        return "手机的内存:总空间"+totalStr+"\n"+availStr;
    }