每日日报

获取sd卡可用空间

public class MainActivity extends Activity {

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

TextView tv_free = (TextView) findViewById(R.id.tv_freespace);

TextView tv_total = (TextView) findViewById(R.id.tv_totalspace);

File storageDirectory = Environment.getExternalStorageDirectory();

long totalSpace = storageDirectory.getTotalSpace();

long freeSpace = storageDirectory.getFreeSpace();

//通过formatter把用byte字节表示的大小 转换成用 kb mb gb 这种单位表示的字符串

String total = Formatter.formatFileSize(this, totalSpace);

String free = Formatter.formatFileSize(this, freeSpace);

tv_free.setText("剩余空间:"+free);

tv_total.setText("总空间:"+total);

}

}