計算SDCard上的容量
使用的類:StatFs,此類保存的是對SDCard上容量的一些信息。
1、返回剩餘的快:getBlockCount()
2、返回總共的快:getBlockCount()
3、返回一個快的大小:getBlockSize()
4、返回剩餘的快(包括系統預留無法訪問的):getAvailableBlocks()
例子:
package lyx.feng.other;
import lyx.feng.simpletextdemo.R; import android.app.Activity; import android.os.Bundle; import android.os.Environment; import android.os.StatFs; import android.widget.TextView;
public class StatFsActivity extends Activity { private TextView tv = null; private StringBuffer buffer = null; private StatFs statFs = null;
@Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); super.setContentView(R.layout.statfs); this.tv = (TextView) super.findViewById(R.id.statfs_tv); this.buffer = new StringBuffer(); this.getStringBuffer(); this.tv.setText(this.buffer.toString()); }
@SuppressWarnings("deprecation") private void getStringBuffer() { if (Environment.getExternalStorageState().equals( Environment.MEDIA_MOUNTED)) { this.statFs = new StatFs(Environment.getExternalStorageDirectory() .getPath()); this.buffer.append("總快:" +
this.statFs. this.buffer .append("可用快:" +
this.statFs. this.buffer.append("快的大小:" +
this.statFs. this.buffer.append("剩餘快(全):" +
this.statFs. this.buffer.append("全部大小:" + (long)
this.statFs. * this.statFs. this.buffer.append("剩餘大小:" + (long)
this.statFs. * this.statFs.
} } }
|
效果: