版本更新

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"   package="com.yourcompany.yourapp"    android:versionCode="109"   android:versionName="0.1.6.109 dev">   ...</manifest>

public static int getVersionCode(Context context) {   PackageManager pm = context.getPackageManager();   try {      PackageInfo pi = pm.getPackageInfo(context.getPackageName(), 0);      return pi.versionCode;   } catch (NameNotFoundException ex) {}   return 0;}

public static int getVersionCode(Context context) {   PackageManager pm = context.getPackageManager();   try {      PackageInfo pi = pm.getPackageInfo(context.getPackageName(), 0);      return pi.versionName;   } catch (NameNotFoundException ex) {}   return 0;}

The APK: http://some-public-url/deploy/MyApplication.apk
The version info file: http://some-public-url/deploy/versioninfo.txt

downloadIntent假设存在

HTTP connection and issuing a GET request:

private String downloadText() {   int BUFFER_SIZE = 2000;   InputStream in = null;   try {      in = openHttpConnection();   } catch (IOException e1) {      return "";   }   String str = "";   if (in != null) {      InputStreamReader isr = new InputStreamReader(in);      int charRead;      char[] inputBuffer = new char[BUFFER_SIZE];      try {         while ((charRead = isr.read(inputBuffer)) > 0) {            // ---convert the chars to a String---            String readString = String.copyValueOf(inputBuffer, 0, charRead);            str += readString;            inputBuffer = new char[BUFFER_SIZE];         }         in.close();      } catch (IOException e) {         return "";      }   }   return str;}

首先比较版本是不是比以前的高如果高就下载apk

Intent updateIntent = new Intent(Intent.ACTION_VIEW,       Uri.parse("http://some-public-url/deploy/MyApplication.apk"));startActivity(updateIntent);

上面只是简单的实现，最好下载apk放到sd卡然后安装以及删掉原来的apk

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