phoneGap中android程序自动更新代码(适合Android4.0之后版本)

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最新推荐文章于 2024-10-30 10:50:42 发布

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分类专栏： phonegap 文章标签： android4.0 phonegap

本文链接：https://blog.youkuaiyun.com/xwq911/article/details/38259463

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本文介绍了一种利用PhoneGap实现Android应用版本更新的方法。通过网络请求检查服务器上的新版本信息，并根据当前应用版本进行对比，决定是否触发更新流程。文章详细展示了如何处理不同Android版本间的兼容性问题。

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import java.io.BufferedReader;
import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;

import android.annotation.SuppressLint;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.PackageManager.NameNotFoundException;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.os.Handler;
import android.os.Message;
import android.os.StrictMode;

import org.apache.cordova.*;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONArray;
import org.json.JSONObject;

import android.util.Log;
import android.view.Menu; 
import android.view.MenuItem; 

public class XXX extends CordovaActivity 
{
    /** Called when the activity is first created. */
    String newVerName = "";//新版本名称
    int newVerCode = -1;//新版本号
    ProgressDialog pd = null;
    String UPDATE_SERVERAPK = "XX.apk";
    @SuppressLint("NewApi")
	@Override
    public void onCreate(Bundle savedInstanceState)
    {
    	StrictMode.setThreadPolicy(new StrictMode.ThreadPolicy.Builder()
    	.detectDiskReads()
    	.detectDiskWrites()
    	.detectNetwork() // or .detectAll() for all detectable problems
    	.penaltyLog()
    	.build());
        super.onCreate(savedInstanceState);
        super.init();
        
        
        // Set by <content src="index.html" /> in config.xml
        super.loadUrl(“主页html路径”);
       
        updateVersion();//启动时就检查 或者 在菜单中调用
    }
   
    //判断是否更新版本
    public void updateVersion(){
        if(getServerVer()){
               int verCode = this.getVerCode(this);
               if(newVerCode>verCode){
                   doNewVersionUpdate();//更新版本
               }else{
                 notNewVersionUpdate();//提示已是最新版本
            	  // doNewVersionUpdate();//更新版本
               }
           }
       }

      /**
         * 获得版本号
         */
        public int getVerCode(Context context){
            int verCode = -1;
            try {
             String packName = context.getPackageName();
             verCode = context.getPackageManager().getPackageInfo(packName, 0).versionCode;
            } catch (NameNotFoundException e) {
                // TODO Auto-generated catch block
                Log.e("版本号获取异常", e.getMessage());
            }
            return verCode;
        }

        /**
         * 获得版本名称
         */
        public String getVerName(Context context){
            String verName = "";
            try {
             String packName = context.getPackageName();
                verName = context.getPackageManager().getPackageInfo(packName, 0).versionName;
            } catch (NameNotFoundException e) {
                Log.e("版本名称获取异常", e.getMessage());
            }
            return verName;
        }
        
        /**
         * 从服务器端获得版本号与版本名称
         * @return
         */
        public boolean getServerVer(){
            try {
                URL url = new URL("服务器地址/version.text");
                HttpURLConnection httpConnection = (HttpURLConnection) url.openConnection();
                httpConnection.setDoInput(true);
                httpConnection.setDoOutput(true);
                httpConnection.setRequestMethod("GET");
                httpConnection.connect();
                InputStreamReader reader = new InputStreamReader(httpConnection.getInputStream());
                BufferedReader bReader = new BufferedReader(reader);
                String json = bReader.readLine();
                JSONArray array = new JSONArray(json);
                JSONObject jsonObj = array.getJSONObject(0);
                newVerCode = Integer.parseInt(jsonObj.getString("verCode"));        
                newVerName = jsonObj.getString("verName");
            } catch (Exception e) {
                e.printStackTrace();
                return false;//如果这里改为true 则不更新会退出程序
            } 
            return true;
        }
        
        /**
         * 不更新版本
         */
        public void notNewVersionUpdate(){
            int verCode = this.getVerCode(this);
            String verName = this.getVerName(this);
            StringBuffer sb = new StringBuffer();
            sb.append("当前版本：");
            sb.append(verName);
            sb.append(" Code:");
            sb.append(verCode);
            sb.append("\n已是最新版本，无需更新");
            Dialog dialog = new AlertDialog.Builder(this)
            .setTitle("软件更新")
            .setMessage(sb.toString())
            .setPositiveButton("确定", new DialogInterface.OnClickListener() {
                
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    // TODO Auto-generated method stub
                    //finish();
                }
            }).create();
            dialog.show();
        }
        
        /**
         * 更新版本
         */
        public void doNewVersionUpdate(){
            int verCode = this.getVerCode(this);
            String verName = this.getVerName(this);
            StringBuffer sb = new StringBuffer();
            sb.append("当前版本：");
            sb.append(verName);
            sb.append(" Code:");
            sb.append(verCode);
            sb.append(",发现版本：");
            sb.append(newVerName);
            sb.append(" Code:");
            sb.append(newVerCode);
            sb.append(",是否更新");
            Dialog dialog = new AlertDialog.Builder(this)
            .setTitle("软件更新")
            .setMessage(sb.toString())
            .setPositiveButton("更新", new DialogInterface.OnClickListener() {
                
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    // TODO Auto-generated method stub
                    pd = new ProgressDialog(ACES.this);
                    pd.setTitle("正在下载");
                    pd.setMessage("请稍后。。。");
                    //矩形进度条
                    pd.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
                    pd.setProgress(100);
                    downFile("服务器地址/XX.apk");
                }
            })
            .setNegativeButton("暂不更新", new DialogInterface.OnClickListener() {
                
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    // TODO Auto-generated method stub
                    //finish();
                }
            }).create();
            //显示更新框
            dialog.show();
        }
        
        /**
         * 下载apk
         */
        public void downFile(final String url){
            pd.show();
            new Thread(){
                public void run(){
                    HttpClient client = new DefaultHttpClient();
                    HttpGet get = new HttpGet(url);
                    HttpResponse response;
                    try {
                        response = client.execute(get);
                        HttpEntity entity = response.getEntity();
                        long length = entity.getContentLength();
                        InputStream is =  entity.getContent();
                        FileOutputStream fileOutputStream = null;
                        if(is != null){
                            File file = new File(Environment.getExternalStorageDirectory(),UPDATE_SERVERAPK);
                            fileOutputStream = new FileOutputStream(file);
                            byte[] b = new byte[1024];
                            int charb = -1;
                            int count = 0;
                            while((charb = is.read(b))!=-1){
                                fileOutputStream.write(b, 0, charb);
                                count += charb;
                            }
                        }
                        fileOutputStream.flush();
                        if(fileOutputStream!=null){
                            fileOutputStream.close();
                        }
                        down();
                    }  catch (Exception e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                    }
                }
            }.start();
        }
        
        Handler handler = new Handler() {

            @Override
            public void handleMessage(Message msg) {

                super.handleMessage(msg);                
                pd.cancel();
                update();
            }
        };
        
        /**
         * 下载完成，通过handler将下载对话框取消
         */
        public void down(){
            new Thread(){
                public void run(){
                    Message message = handler.obtainMessage();
                    handler.sendMessage(message);
                }
            }.start();
        }
        
        /**
         * 安装应用
         */
        public void update(){
            Intent intent = new Intent(Intent.ACTION_VIEW);
            intent.setDataAndType(Uri.fromFile(new File(Environment.getExternalStorageDirectory(),UPDATE_SERVERAPK))
                    , "application/vnd.android.package-archive");
            startActivity(intent);
        }
}

这是phonegap实现Android版本更新的代码，大部分摘自网上的东西，但是因为网上的代码几乎都是一样的且相对较旧，在Android4.0之后的版本运用都会报错，结果研究进行了相应的修改。测试可用。

代码中主类继承自CordovaActivity ，由于Android4.0版本后，网络连接部分需要使用线程或者通过在super.onCreate(savedInstanceState);方法前添加StrictMode.setThreadPolicy(new StrictMode.ThreadPolicy.Builder() .detectDiskReads() .detectDiskWrites() .detectNetwork() // or .detectAll() for all detectable problems .penaltyLog() .build());才能正常运行不抛异常。由此，便可用phonegap实现Android版本更新