Android基础--获取SD卡可用容量
import java.io.File; import android.os.Build; import android.os.Bundle; import android.os.Environment; import android.os.StatFs; import android.app.Activity; import android.text.format.Formatter; import android.view.Menu; import android.widget.TextView; public class MainActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); File path = Environment.getExternalStorageDirectory(); StatFs stat = new StatFs(path.getPath()); long blockSize; long totalBlocks; long availableBlocks; //检测系统当前版本号 if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2){ blockSize = stat.getBlockSizeLong(); totalBlocks = stat.getBlockCountLong(); availableBlocks = stat.getAvailableBlocksLong(); } else{ blockSize = stat.getBlockSize(); totalBlocks = stat.getBlockCount(); availableBlocks = stat.getAvailableBlocks(); } TextView tv = (TextView) findViewById(R.id.tv); tv.setText(formatSize(availableBlocks * blockSize)); } private String formatSize(long size) { return Formatter.formatFileSize(this, size); } }
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