android手动更新demo，当然最好还是用第三方，简单方便

android流程：服务端部署一个服务，返回最新的app信息（用json描述）。

app思路：

程序启动检查版本：

1：取本地版本和请求服务端app信息，使用volly库请求服务并且解析成json对象。如果服务端版本大于本地，提示信息让用户选择是否更新。

2：如果忽略，那么关闭对话框。

3：如果选择更新。那么流程如下:

1:下载完成启动安装

2:中途取消。

package com.example.autoupdate_android;

import java.io.File;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.InputStream;

import java.net.HttpURLConnection;

import java.net.MalformedURLException;

import java.net.URL;

import org.json.JSONException;

import org.json.JSONObject;

import com.android.volley.RequestQueue;

import com.android.volley.Response;

import com.android.volley.Response.Listener;

import com.android.volley.VolleyError;

import com.android.volley.toolbox.JsonObjectRequest;

import com.android.volley.toolbox.Volley;

import android.app.AlertDialog;

import android.app.Dialog;

import android.content.Context;

import android.content.DialogInterface;

import android.content.DialogInterface.OnClickListener;

import android.content.Intent;

import android.content.pm.PackageManager.NameNotFoundException;

import android.hardware.camera2.params.StreamConfigurationMap;

import android.net.Uri;

import android.os.Environment;

import android.os.Handler;

import android.os.Message;

import android.support.v4.media.MediaDescriptionCompatApi21.Builder;

import android.view.LayoutInflater;

import android.view.View;

import android.widget.ProgressBar;

import android.widget.Toast;

public class UpdateManager {

private static final String PATH="http://xxx/test/versiontest.txt";

private Dialog mDownLoadDialog;

private String mSavePath="";

private int CurrentProgress;

private ProgressBar process1;

private static final int DOWNLOAD_ING=1;

private static final int DOWNLOAD_OK=2;

private static boolean IsCancelDownLoad=false;

private Handler mUpdateProgressHandler=new Handler(){

public void handleMessage(Message msg)

{

//1：正在下载

//2:下载完成

switch(msg.what)

{

case DOWNLOAD_ING:

process1.setProgress(CurrentProgress);

break;

default:

mDownLoadDialog.dismiss();

installAPK();

break;

}

};

public String getVersion_code() {

return Version_code;

}

public void setVersion_code(String version_code) {

Version_code = version_code;

}

public String getVersion_name() {

return version_name;

}

public void setVersion_name(String version_name) {

this.version_name = version_name;

}

public String getVersion_desc() {

return version_desc;

}

public void setVersion_desc(String version_desc) {

this.version_desc = version_desc;

}

public String getVersion_path() {

return version_path;

}

public void setVersion_path(String version_path) {

this.version_path = version_path;

}

private String Version_code="";

private String version_name="";

private String version_desc="";

private String version_path="";

private Context mainContext;

private Handler mGetVersionHandler=new Handler()

{

public void handleMessage(Message msg)

{

JSONObject obj=(JSONObject) msg.obj;

System.out.println(obj.toString());

try {

Version_code=obj.getString("version_code");

version_name=obj.getString("version_name");

version_desc=obj.getString("version_desc");

version_path=obj.getString("version_path");

if(isUpdate())

{

Toast.makeText(mainContext, "hi，有新版本", Toast.LENGTH_SHORT).show();

showNoticeDialog();

}

else

{

Toast.makeText(mainContext, "hi，已经是最新的咯", Toast.LENGTH_SHORT).show();;

}

} catch (JSONException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

};

public UpdateManager(Context mainContext)

{

this.mainContext=mainContext;

}

public void checkUpdate()

{

RequestQueue requestQueue=Volley.newRequestQueue(mainContext);

JsonObjectRequest json=new JsonObjectRequest(PATH,null,new Listener<JSONObject>(){

@Override

public void onResponse(JSONObject obj) {

// TODO Auto-generated method stub

Message msg=Message.obtain();

msg.obj=obj;

mGetVersionHandler.sendMessage(msg);

}

},new Response.ErrorListener() {

@Override

public void onErrorResponse(VolleyError arg0) {

// TODO Auto-generated method stub

}

});

requestQueue.add(json);

}

protected boolean isUpdate()//是否需要更新

{

int serverVersion=Integer.parseInt(Version_code);

try {

int localVersion=mainContext.getPackageManager().getPackageInfo("com.example.autoupdate_android",0).versionCode;

String oo=mainContext.getPackageName();

if(serverVersion>localVersion)

{

return true;

}

} catch (NameNotFoundException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

return false;

}

protected void showNoticeDialog()//呈现更新提示框

{

AlertDialog.Builder builder=new AlertDialog.Builder(mainContext);

builder.setTitle("提示");

String message="程序员GG又开发了新版本哟\n"+version_desc;

builder.setMessage(message);

builder.setPositiveButton("更新",new OnClickListener(){//给对话框添加"Yes"按钮

@Override

public void onClick(DialogInterface dialog, int which) {

// TODO Auto-generated method stub

dialog.dismiss();

showDownloadDialog();

}

});

builder.setNegativeButton("忽略",new OnClickListener(){//对话框添加"No"按钮

@Override

public void onClick(DialogInterface dialog, int which) {

// TODO Auto-generated method stub

dialog.dismiss();

}

});

builder.create().show();

}

protected void showDownloadDialog()//显示下载对话框

{

AlertDialog.Builder builder=new AlertDialog.Builder(mainContext);

builder.setTitle("下载中");

View view1=LayoutInflater.from(mainContext).inflate(R.layout.dialog_progress,null);

process1=(ProgressBar) view1.findViewById(R.id.progress1);

builder.setView(view1);

builder.setNegativeButton("取消",new OnClickListener(){

@Override

public void onClick(DialogInterface dialog, int which) {

// TODO Auto-generated method stub

dialog.dismiss();

IsCancelDownLoad=true;

}

});

mDownLoadDialog=builder.create();

mDownLoadDialog.show();

downloadAPK();

//下载begin

}

private void downloadAPK()//开线程下载apk

{

new Thread(new Runnable(){

@Override

public void run() {

// TODO Auto-generated method stub

if(Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED))

{

String sdpath=Environment.getExternalStorageDirectory()+"/";

mSavePath=sdpath+"ztx";

File dir=new File(mSavePath);

if(!dir.exists())

{

dir.mkdir();

}

try {

HttpURLConnection conn=(HttpURLConnection) new URL(version_path).openConnection();

conn.connect();

InputStream stream=conn.getInputStream();

int totalLength=conn.getContentLength();//文件长度

File apkfile=new File(mSavePath,version_name);

FileOutputStream fos=new FileOutputStream(apkfile);

int count=0;

byte[]buffer=new byte[1024];

while(!IsCancelDownLoad)

{

int read=stream.read(buffer);//本次读取字节数

count+=read;

//进度条的位置等于当前总量/总文件大小

CurrentProgress=(int) ((float)count/totalLength*100);

//todo 进度条 handler

mUpdateProgressHandler.sendEmptyMessage(DOWNLOAD_ING);//发送正在下载

if(read<=0)//下载完成 handler

{

mUpdateProgressHandler.sendEmptyMessage(DOWNLOAD_OK);//下载完成

break;

}

fos.write(buffer,0,read);//写入文件

}

fos.close();

stream.close();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}).start();

}

private void installAPK()//安装apk

{

File apkFile=new File(mSavePath,version_name);

if(!apkFile.exists())

{

return;

}

Intent obj=new Intent(Intent.ACTION_VIEW);

obj.setDataAndType(Uri.parse("file://"+apkFile.toString()), "application/vnd.android.package-archive");

mainContext.startActivity(obj);

}

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