package irdc.cunchu;

import irdc.cunchu.R;

import java.io.File;

import java.text.DecimalFormat;

import android.app.Activity;

import android.os.Bundle;

import android.os.Environment;

import android.os.StatFs;

import android.view.View;

import android.widget.Button;

import android.widget.ProgressBar;

import android.widget.TextView;

public class cunchu extends Activity

{

private Button myButton;

private ProgressBar myProgressBar;

private TextView myTextView;

/** Called when the activity is first created. */

@Override

public void onCreate(Bundle savedInstanceState)

{

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

myButton = (Button) findViewById(R.id.myButton);

myProgressBar = (ProgressBar) findViewById(R.id.myProgressBar);

myTextView = (TextView) findViewById(R.id.myTextView);

myButton.setOnClickListener(new Button.OnClickListener()

{

@Override

public void onClick(View arg0)

{

showSize();

}

});

}

private void showSize()

{

/* 将TextView及ProgressBar设置为空值及0 */

myTextView.setText("");

myProgressBar.setProgress(0);

/* 判断存储卡是否插入 */

if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED))

{

/* �取得SD CARD文件路径一般是/sdcard */

File path = Environment.getExternalStorageDirectory();

/* StatFs看文件系统空间使用状况 */

StatFs statFs = new StatFs(path.getPath());

/* Block的size*/

long blockSize = statFs.getBlockSize();

/* 总Block数量 */

long totalBlocks = statFs.getBlockCount();

/* �已使用的Block数量 */

long availableBlocks = statFs.getAvailableBlocks();

String[] total = fileSize(totalBlocks * blockSize);

String[] available = fileSize(availableBlocks * blockSize);

/* getMax取得在main.xml里ProgressBar设置的最大值 */

int ss = Integer.parseInt(available[0]) * myProgressBar.getMax()

/ Integer.parseInt(total[0]);

myProgressBar.setProgress(ss);

String text = "总共" + total[0] + total[1] + "\n";

text += "可用" + available[0] + available[1];

myTextView.setText(text);

} else if (Environment.getExternalStorageState().equals(

Environment.MEDIA_REMOVED))

{

String text = "SD CARD已删除";

myTextView.setText(text);

}

}

/*返回为字符串数组[0]为大小[1]为单位KB或MB*/

private String[] fileSize(long size)

{

String str = "";

if (size >= 1024)

{

str = "KB";

size /= 1024;

if (size >= 1024)

{

str = "MB";

size /= 1024;

}

}

DecimalFormat formatter = new DecimalFormat();

/* 每3个数字用,分隔如：1,000 */

formatter.setGroupingSize(3);

String result[] = new String[2];

result[0] = formatter.format(size);

result[1] = str;

return result;

}

}

package="irdc.cunchu"

android:versionCode="1"

android:versionName="1.0.0">

android:label="@string/app_name">

android:orientation="vertical"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

>

android:id="@+id/myButton"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="@string/strButton"

>

android:id="@+id/myTextView"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

>

android:id="@+id/myProgressBar"

style="?android:attr/progressBarStyleHorizontal"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:max="100"

android:progress="0">