android 應用更新升級模塊 升級會卡 引發CF

        今天在做應用升級的模塊的時候，給大家分享一下升級的相關代碼模塊，在升級的過程前期的下載，和現在彈出的相關窗體這些的沒有什么難度的，就是有個重要的地方，在每次要刷新下載進度更新的時候，要給個有條件更新，如果每次夠讓他跟新的，會導致應用邊卡，引發CF等問題，下面是相關的代碼分享，若其他問題可以私聊我！！！

     本應用用到了兩個開源庫：

    需要的人找我私聊

public class MainActivity extends Activity {

 private int mCurVersion;
 private ObjUpData updata;
 private static NotificationManager mNm;
 private static RemoteViews mrRemoteViews;
 private static Notification notification;
 private static int tmp;
 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);
  mNm = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
//  點擊下載
  findViewById(R.id.button1).setOnClickListener(new OnClickListener() {
   
   @Override
   public void onClick(View v) {
    updatautil();
   }
  });
  //若點擊下載后，在點別的會倒是CF
  findViewById(R.id.button2).setOnClickListener(new OnClickListener() {
   
   @Override
   public void onClick(View v) {
    // TODO Auto-generated method stub
    Toast.makeText(MainActivity.this, "卡了！！我就呵呵了", Toast.LENGTH_SHORT).show();
    
   }
  });
 }
 public int getCurrentVersion() {
  PackageInfo info = null;
  try {
   PackageManager pm = getPackageManager();
   info = pm.getPackageInfo(getPackageName(), 0);
  } catch (NameNotFoundException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
  Log.e("getCurrentVersion", "info.versionCode=" + info.versionCode);
  return info.versionCode;
 }
 private void updatautil() {
  // 小模塊：實現版本升級
  // 打開應用
  // ---->有新版本，彈出dialog（更新了xx功能，修復了xxbug，提升自動定位的準確性...）；
  // 如果點擊取消就不更新，
  // 點擊確定才開始下載最新安裝包
  // --->下載完成，下拉點擊，跳轉到安裝界面
  // 有新版本，彈出dialog
  // 獲取當前版本
      mCurVersion = getCurrentVersion();
  // 獲取新版本，下載文件，解析得到文件中所有數據
  
  HttpUtil.post("http://192.168.1.103:8080/tins//equRgController/doDownloadNewVersion.do",//下載路徑
    new RequestParams(), new AsyncHttpResponseHandler() {
   @Override
   
   public void onSuccess(int statusCode, Header[] headers, String content) {
    Log.e("HttpUtil.post", "statusCode=" + statusCode + "headers=" + headers + "content=" + content);
    UpData data = new Gson().fromJson(content, UpData.class);
    updata = data.getObj();
    // 得到新版本號
    int newVersion = updata.getVersion();
    // 將新版本號跟就版本進行比較
    if (newVersion > mCurVersion) {
     // 彈出dialog提示是否需要更新并顯示更新簡介
     showMyDialog();
    }
   }

   @Override
   public void onFailure(int statusCode, Header[] headers, Throwable error, String content) {
   }

  });
 }

 private void showMyDialog() {
  final Dialog mDialog = new Dialog(this);
  mDialog.setTitle("發現新版本");
  View view = getLayoutInflater().inflate(R.layout.dialog_item, null);
  TextView textView = (TextView) view.findViewById(R.id.textView1);
  textView.setText(updata.getDesc());
  view.findViewById(R.id.button2).setOnClickListener(new OnClickListener() {
   @Override
   public void onClick(View v) {
    mDialog.dismiss();
    new MyAsyn(mNm).execute(updata.getLoadUrl());
    ShowPedding();
   }

  });
  view.findViewById(R.id.button1).setOnClickListener(new OnClickListener() {
   @Override
   public void onClick(View v) {
    mDialog.dismiss();
   }

  });
  mDialog.setContentView(view);
  mDialog.show();

 }
  
//啟動異步下載

 static class MyAsyn extends AsyncTask<String, Integer, Integer> {

  private NotificationManager mNm;

  public MyAsyn(NotificationManager mNm) {
   this.mNm = mNm;
  }

  @Override
  protected Integer doInBackground(String... params) {
   int length = 0;
   FileOutputStream fos = null;
   try {
    URL url = new URL(params[0]);
    URLConnection openConnection = url.openConnection();
    InputStream is = openConnection.getInputStream();
    length = openConnection.getContentLength();
    byte[] buffer = new byte[1024];
    int end = 0;
    int sum = 0;
    Log.e("doInBackground", "Environment.getExternalStorageDirectory().getPath()="
      + Environment.getExternalStorageDirectory().getPath());
    fos = new FileOutputStream(Environment.getExternalStorageDirectory().getPath() + "/TTins.apk");
    // fos = new FileOutputStream("/mnt/sdcard/TTins.apk");
    while (-1 != (end = is.read(buffer))) {
     fos.write(buffer, 0, end);
     int resent = sum * 100 / length;
     sum += end;
     if (resent % 6 == 0&&tmp!=resent) {
      tmp=resent;
      publishProgress(length, sum, resent);
     }
    }
   } catch (IOException e) {
    e.printStackTrace();
   } finally {
    if (fos != null) {
     try {
      fos.close();
     } catch (IOException e) {
      e.printStackTrace();
     }
    }
   }
   return length;
  }

  @Override
  protected void onProgressUpdate(Integer... values) {
   mrRemoteViews.setProgressBar(R.id.progressBar1, values[0], values[1], false);
   mrRemoteViews.setTextViewText(R.id.textView1, "已下載" + values[2] + "%");
   mNm.notify(1, notification);
   super.onProgressUpdate(values);
  }

  @Override
  protected void onPostExecute(Integer result) {
   mrRemoteViews.setProgressBar(R.id.progressBar1, result, result, false);
   mrRemoteViews.setTextViewText(R.id.textView1, "下載完成");
   mNm.notify(1, notification);
   super.onPostExecute(result);
  }

 }
 
 private void ShowPedding() {
  // private static void ShowPedding(Activity activity,
  // NotificationManager mNm) {
  String fileName = Environment.getExternalStorageDirectory().getAbsolutePath() + "/TTins.apk";
  // 創建URI
  Uri uri = Uri.fromFile(new File(fileName));
  Intent intent = new Intent(Intent.ACTION_VIEW);
  intent.setDataAndType(uri, "application/vnd.android.package-archive");
  PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent, 0);
  mrRemoteViews = new RemoteViews(getPackageName(), R.layout.remote_item);
  notification = new NotificationCompat.Builder(this).setTicker("開始下載").setSmallIcon(R.drawable.ic_launcher)
    .setContentIntent(pendingIntent).setContent(mrRemoteViews).build();
  mNm.notify(1, (Notification) notification);
 }
 
}

彈出dialog的XML文件

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:background="#ffffff"
        android:layout_alignParentTop="true" >
       

        <ImageView
            android:id="@+id/p_w_picpathView1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentTop="true"
            android:layout_centerHorizontal="true"
            android:src="@drawable/ic_launcher" />

        <TextView
            android:id="@+id/textView1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_below="@+id/p_w_picpathView1"
            android:layout_centerHorizontal="true"
            android:layout_marginTop="22dp"
            android:text="Large Text"
            android:textAppearance="?android:attr/textAppearanceLarge" />

        <Button
            android:id="@+id/button1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_below="@+id/textView1"
            android:layout_marginTop="23dp"
            android:layout_toLeftOf="@+id/p_w_picpathView1"
            android:text="取消" />

        <Button
            android:id="@+id/button2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignBaseline="@+id/button1"
            android:layout_alignBottom="@+id/button1"
            android:layout_toRightOf="@+id/p_w_picpathView1"
            android:text="確定" />
    </RelativeLayout>

</RelativeLayout>

下面分享一下要用的兩個XML文件

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <ProgressBar
        android:id="@+id/progressBar1"
       
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/textView1"
        android:layout_toLeftOf="@+id/button1"
        android:layout_toRightOf="@+id/p_w_picpathView1" />

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentRight="true"
        android:layout_alignParentTop="true"
        android:text="Button" />

    <ImageView
        android:id="@+id/p_w_picpathView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:src="@drawable/ic_launcher" />

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_toRightOf="@+id/p_w_picpathView1"
        android:text="Large Text"
        android:textAppearance="?android:attr/textAppearanceLarge" />

</RelativeLayout>