获取sd卡的大小

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TextView tv = (TextView) findViewById(R.id.tv_sdsize);         File path = Environment.getExternalStorageDirectory();         StatFs stat = new StatFs(path.getPath());         long blockSize = stat.getBlockSize();         long availableBlocks = stat.getAvailableBlocks();         long sizeAvailSize = blockSize * availableBlocks;         String str = Formatter.formatFileSize(this, sizeAvailSize);         tv.setText(str);     }

 以下是android系统设置查看sd卡大小的源码

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File path = Environment.getExternalStorageDirectory();                 StatFs stat = new StatFs(path.getPath());                 long blockSize = stat.getBlockSize();                 long totalBlocks = stat.getBlockCount();                 long availableBlocks = stat.getAvailableBlocks();                                    mSdSize.setSummary(formatSize(totalBlocks * blockSize));                 mSdAvail.setSummary(formatSize(availableBlocks * blockSize) + readOnly);                    mSdMountToggle.setEnabled(true);                 mSdMountToggle.setTitle(mRes.getString(R.string.sd_eject));                 mSdMountToggle.setSummary(mRes.getString(R.string.sd_eject_summary));

 

 

 

 

 

 

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