Android中获取ROM和SD卡剩余可用空间大小

//获取内存可用剩余空间
long romFreeSpace = Environment.getDataDirectory().getFreeSpace();

//获取SD卡可用剩余空间
long SDFreeSpace = Environment.getExternalStorageDirectory().getFreeSpace();
//格式化大小
tvRom.setText("内存可用"+Formatter.formatFileSize(this,romFreeSpace));
tvSD.setText("sd卡可用" + Formatter.formatFileSize(this, SDFreeSpace));