手机apk拷贝到sdcard

public class CopyAppActivity extends Activity {
 /** Called when the activity is first created. */
 private static final String outFile = "sdcard/backups/"; //备份apk目录
 @Override
 public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  try {
   copyFiles();
  } catch (Exception e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
  setContentView(R.layout.main);

 }

 static String getFileName(String fullName) {
  if (fullName == null) {
   return null;
  }

  int idx = fullName.lastIndexOf('/');
  if (idx == -1) {
   return fullName;
  }

  return fullName.substring(idx + 1);
 }

 public void copyFiles() throws Exception {

  final PackageManager pm = getPackageManager();
  List<ApplicationInfo> allApps = pm.getInstalledApplications(0);
  final List<ApplicationInfo> filteredApps = filterApps(allApps);
  for (int i = 0, size = filteredApps.size(); i < size; i++) {
   ApplicationInfo info = filteredApps.get(i);
   String src = info.sourceDir;//获取apk所在路径
   if (src != null) {
    FileStraeamCopy(src,outFile);
   }
  }
 }

 /*
  * 获取用户安装的软件list
  */
 public static List<ApplicationInfo> filterApps(List<ApplicationInfo> apps) {
  if (apps == null || apps.size() == 0) {
   return apps;
  }

  List<ApplicationInfo> userApps = new ArrayList<ApplicationInfo>();

  for (int i = 0, size = apps.size(); i < size; i++) {
   ApplicationInfo ai = apps.get(i);

   if ((ai.flags & ApplicationInfo.FLAG_SYSTEM) == 0) {
    userApps.add(ai);
   }
  }

  return userApps;

 }

 /**
  * io拷贝
  *
  * @param inFile
  *            源文件
  * @param outFile
  *            目标文件
  * @return
  * @throws Exception
  */
 public static void FileStraeamCopy(String inFile, String outFile)
   throws Exception {

  try {
   File file = new File(outFile); /* 创建临时文件 */
   if (!file.exists())// 如果文件夹不存在创建
   {
    file.mkdir();
   }
   File files = new File(outFile + getFileName(inFile));// 创建文件
   file.getAbsolutePath();
   /* 将文件写入暂存盘 */
   FileOutputStream fos = new FileOutputStream(files);
   byte buf[] = new byte[128];
   InputStream fis = new BufferedInputStream(new FileInputStream(
     inFile), 8192 * 4);
   do {
    int numread = fis.read(buf);
    if (numread <= 0) {
     break;
    }
    fos.write(buf, 0, numread);
   } while (true);
  } catch (IOException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
 }

}

评论

3 楼 luckypen2007 2011-09-07  

我知道了，是因为我的虚拟机创建的时候没有分配空间。。。

2 楼 luckypen2007 2011-09-07  

Permission denied

1 楼 luckypen2007 2011-09-07  

你好，你的manifest.xml最后的权限MOUNT_UNMOUNT_FILESYSTEMS漏了一个字母。。。
我把权限加上去以后，在FileOutputStream fos = new FileOutputStream(files)这一步还是出现no permission的异常，请问楼主有碰到这个问题吗？我是在虚拟机上跑的。。。