Android 一个强大实用的版本升级demo（thread+service+Notification）

 点击马上更新 

 点击后台更新 

 
效果apk： 

 TestVersionUpdate.apk (21.86
KB, 下载次数: 78) 
源码： 

 versionUpdate.zip (90.25
KB, 下载次数: 1312) 

第一步：获取本机app版本：

public int getVerCode(Context _context,String _package) {

int verCode = -1;

try {

verCode = _context.getPackageManager().getPackageInfo(

_package, 0).versionCode;

} catch (NameNotFoundException e) {

}

return verCode;

}

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第二步：线程从服务端下载当前版本以及升级提示：

public JSONObject getJsonObject(String Url) {

HttpClient client = new DefaultHttpClient();

StringBuilder sb = new StringBuilder();

String js = null;JSONObject son=null;

HttpGet myget = new HttpGet(Url); 

try {

HttpParams params = new BasicHttpParams();

HttpConnectionParams.setConnectionTimeout(params, 8000);

HttpResponse response = client.execute(myget);

BufferedReader reader = new BufferedReader(new InputStreamReader(

response.getEntity().getContent()));

for (String s = reader.readLine(); s != null; s = reader.readLine()) {

sb.append(s);

}

js = sb.toString();

son = new JSONObject(js);

} catch (Exception e) {

// TODO Auto-generated catch block

System.out.println("异常-》下载转化JSON");

return null;

}

return son;

}

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第三步：进行版本号对比，若有新版本，进行版本升级提示，builder使用自定义view。

LinearLayout ll = (LinearLayout) LayoutInflater.from(TestVersionUpdateActivity.this).inflate(

R.layout.layout_loadapk, null);

pb = (ProgressBar) ll.findViewById(R.id.down_pb);

tv = (TextView) ll.findViewById(R.id.tv);

Builder builder = new Builder(TestVersionUpdateActivity.this);

builder.setView(ll);builder.setTitle("版本更新进度提示");

builder.setNegativeButton("后台下载",

new DialogInterface.OnClickListener() {

@Override

public void onClick(DialogInterface dialog, int which) {

Intent intent=new Intent(TestVersionUpdateActivity.this, VersionService.class); 

startService(intent);

dialog.dismiss();

}

});

builder.show();

new Thread() {

public void run() {

loadFile("http://1.nightman.sinaapp.com/test/good.zip");

}

}.start();

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第四步，进行更新

public void loadFile(String url) {

HttpClient client = new DefaultHttpClient();

HttpGet get = new HttpGet(url);

HttpResponse response;

try {

response = client.execute(get);

HttpEntity entity = response.getEntity();

float length = entity.getContentLength();

InputStream is = entity.getContent();

FileOutputStream fileOutputStream = null;

if (is != null) {

File file = new File(Environment.getExternalStorageDirectory(),

"NightMan.apk");

fileOutputStream = new FileOutputStream(file);

byte[] buf = new byte[1024];

int ch = -1;

float count = 0;

while ((ch = is.read(buf)) != -1) {

fileOutputStream.write(buf, 0, ch);

count += ch;

sendMsg(1,(int) (count*100/length));

}

}

sendMsg(2,0);

fileOutputStream.flush();

if (fileOutputStream != null) {

fileOutputStream.close();

}

} catch (Exception e) {

sendMsg(-1,0);

}

}

private void sendMsg(int flag,int c) {

Message msg = new Message();

msg.what = flag;msg.arg1=c;

handler.sendMessage(msg);

}

private Handler handler = new Handler() {

@Override

public void handleMessage(Message msg) {// 定义一个Handler，用于处理下载线程与UI间通讯

if (!Thread.currentThread().isInterrupted()) {

switch (msg.what) {

case 1:

pb.setProgress(msg.arg1);

loading_process = msg.arg1;

tv.setText("已为您加载了：" + loading_process + "%");

break;

case 2:

Intent intent = new Intent(Intent.ACTION_VIEW);

intent.setDataAndType(Uri.fromFile(new File(Environment

.getExternalStorageDirectory(), "NightMan.apk")),

"application/vnd.android.package-archive");

startActivity(intent);

break;

case -1:

String error = msg.getData().getString("error");

Toast.makeText(TestVersionUpdateActivity.this, error, 1).show();

break;

}

}

super.handleMessage(msg);

}

};

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后台下载service循环handler

private Handler mHandler = new Handler() {

@Override

public void handleMessage(Message msg) {

// 1为出现，2为隐藏

if(TestVersionUpdateActivity.loading_process>99){

notificationMrg.cancel(0);

stopSelf();

return;

}

if(TestVersionUpdateActivity.loading_process>old_process){

displayNotificationMessage(TestVersionUpdateActivity.loading_process);

}

new Thread() {

public void run() {

isFirstStart=false;

Message msg = mHandler.obtainMessage();

mHandler.sendMessage(msg);

}

}.start();

old_process =TestVersionUpdateActivity.loading_process;

}

};

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有需要改进的地方望大哥们多踢踢BUG

应部分朋友的需求，这边上一下服务端的代码

服务器端以PHP为例，输出一个JSON格式的字符串
<?php
echo '{        "version":2,
        "content":[{"id":0,"text":"增加了摇一摇自动排列频道的功能"},
{"id":1,"text":"优化了拖拽缓冲的效果"},
{"id":2,"text":"改善了PATH菜单用户体验"},
{"id":3,"text":"添加了更多名人趣事"}
]}
        ';