android更新應用程序 | 網頁設計教學

直接貼代碼：

config類：

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package com.tutor.config;

import org.json.JSONArray;

import org.json.JSONObject;

import com.tutor.update.R;

import android.content.Context;

import android.content.pm.PackageInfo;

import android.content.pm.PackageManager;

import android.content.pm.PackageManager.NameNotFoundException;

import android.util.Log;

public class Config

{

public String UPDATE_SERVER = "https://10.81.48.181:8080/update/";

public String UPDATE_APKNAME = "";

public String UPDATE_SAVENAME = "update.apk";

public String UPDATE_VERJSON = "ver.json";

public static int newVerCode;

public static String newVerName;

/**

* 獲取當前版本號

* @param context

* @return

public int getVerCode(Context context)

{

int verCode = -1;

try

{

// 獲取packagemanager的實例

PackageManager packageManager = context.getPackageManager();

// getPackageName()是你當前類的包名，0代表是獲取版本信息

PackageInfo packInfo =

packageManager.getPackageInfo(context.getPackageName(), 0);

verCode = packInfo.versionCode;

// verCode =

// context.getPackageManager().getPackageInfo(

// "com.example.update", 0).versionCode;

System.out.println("nowcode—?>>>" + verCode);

}

catch (NameNotFoundException e)

{

Log.e("RG", e.getMessage());

}

return verCode;

}

/**

* 獲取版本名稱

* @param context

* @return

public String getVerName(Context context)

{

String verName = "";

try

{

// 獲取packagemanager的實例

PackageManager packageManager = context.getPackageManager();

// getPackageName()是你當前類的包名，0代表是獲取版本信息

PackageInfo packInfo =

packageManager.getPackageInfo(context.getPackageName(), 0);

verName = packInfo.versionName;

// verName =

// context.getPackageManager().getPackageInfo(

// "com.example.update", 0).versionName;

}

catch (NameNotFoundException e)

{

Log.e("RG", e.getMessage());

}

return verName;

}

// public static String getVerName(Context context)

// {

// String verName =

// context.getResources().getText(R.string.app_versionName)

// .toString();

// return verName;

// }

public static String getAppName(Context context)

{

String verName =

context.getResources().getText(R.string.app_name).toString();

return verName;

}

/**

* 檢查服務器的版本

* @return

public boolean getServerVerCode()

{

try

{

String verjson =

NetworkTool.getContent(UPDATE_SERVER + UPDATE_VERJSON);

System.out.println("verjson—>>>" + verjson);

JSONArray array = new JSONArray(verjson);

if (array.length() > 0)

{

JSONObject obj = array.getJSONObject(0);

try

{

newVerCode = Integer.parseInt(obj.getString("verCode"));

newVerName = obj.getString("verName");

System.out.println("newVerCode—>>>" + newVerCode);

System.out.println("newVerName—>>>" + newVerName);

}

catch (Exception e)

{

newVerCode = -1;

newVerName = "";

return false;

}

catch (Exception e)

{

Log.e("RG", e.getMessage());

return false;

}

return true;

}

NetworkTool類：

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package com.tutor.config;

import java.io.IOException;

import java.io.InputStream;

import java.net.HttpURLConnection;

import java.net.MalformedURLException;

import java.net.URL;

public class NetworkTool

{

public static String getContent(String filename)

{

URL url;

String str;

try

{

url = new URL(filename);

HttpURLConnection conn = (HttpURLConnection) url.openConnection();

conn.connect();

int len = conn.getContentLength();

InputStream is = conn.getInputStream();

byte[] by = new byte[len];

is.read(by);

str = new String(by, "UTF-8");

return str;

}

catch (MalformedURLException e)

{

// TODO Auto-generated catch block

e.printStackTrace();

return "";

}

catch (IOException e)

{

// TODO Auto-generated catch block

e.printStackTrace();

return "";

}

UpdateApplication類：

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package com.tutor.config;

import android.content.Context;

public class UpdateApplication

{

/**

* 檢查更新狀態

* @param context

* @return

public static boolean getUpdateInfo(Context context)

{

Config cof = new Config();

cof.getServerVerCode();

if (cof.getVerCode(context) < Config.newVerCode)

{

return true;

}

else

{

return false;

}

/**

* 馬上更新

* @param context

public static void newUpdate(Context context)

{

UpdateManager mUpdateManager = new UpdateManager(context);

mUpdateManager.checkUpdateInfo();

}

UpdateManager類：

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package com.tutor.config;

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 com.tutor.update.R;

import android.app.AlertDialog;

import android.app.Dialog;

import android.app.AlertDialog.Builder;

import android.content.Context;

import android.content.DialogInterface;

import android.content.Intent;

import android.content.DialogInterface.OnClickListener;

import android.net.Uri;

import android.os.Handler;

import android.os.Message;

import android.view.LayoutInflater;

import android.view.View;

import android.widget.ProgressBar;

public class UpdateManager

{

private Context mContext;

// 提示語

private String updateMsg = "有最新的軟件包哦，親快下載吧~";

// 返回的安裝包url

private String apkUrl = "https://10.81.48.181:8080/update/UpdateDemo.apk";

private Dialog noticeDialog;

private Dialog downloadDialog;

/* 下載包安裝路徑 */

private static final String savePath = "/sdcard/updatedemo/";

private static final String saveFileName = savePath

+ "UpdateDemoRelease.apk";

/* 進度條與通知ui刷新的handler和msg常量 */

private ProgressBar mProgress;

private static final int DOWN_UPDATE = 1;

private static final int DOWN_OVER = 2;

private int progress;

private Thread downLoadThread;

private boolean interceptFlag = false;

private Handler mHandler = new Handler()

{

public void handleMessage(Message msg)

{

switch (msg.what)

{

case DOWN_UPDATE:

mProgress.setProgress(progress);

break;

case DOWN_OVER:

installApk();

break;

default:

break;

}

};

public UpdateManager(Context context)

{

this.mContext = context;

}

// 外部接口讓主Activity調用

public void checkUpdateInfo()

{

showNoticeDialog();

}

private void showNoticeDialog()

{

AlertDialog.Builder builder = new Builder(mContext);

builder.setTitle("軟件版本更新");

builder.setMessage(updateMsg);

builder.setPositiveButton("下載", new OnClickListener()

{

@Override

public void onClick(DialogInterface dialog, int which)

{

dialog.dismiss();

showDownloadDialog();

}

});

builder.setNegativeButton("以後再說", new OnClickListener()

{

@Override

public void onClick(DialogInterface dialog, int which)

{

dialog.dismiss();

}

});

noticeDialog = builder.create();

noticeDialog.show();

}

private void showDownloadDialog()

{

AlertDialog.Builder builder = new Builder(mContext);

builder.setTitle("軟件版本更新");

final LayoutInflater inflater = LayoutInflater.from(mContext);

View v = inflater.inflate(R.layout.progress, null);

mProgress = (ProgressBar) v.findViewById(R.id.progress);

builder.setView(v);

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

{

@Override

public void onClick(DialogInterface dialog, int which)

{

dialog.dismiss();

interceptFlag = true;

}

});

downloadDialog = builder.create();

downloadDialog.show();

downloadApk();

}

private Runnable mdownApkRunnable = new Runnable()

{

@Override

public void run()

{

try

{

URL url = new URL(apkUrl);

HttpURLConnection conn =

(HttpURLConnection) url.openConnection();

conn.connect();

int length = conn.getContentLength();

InputStream is = conn.getInputStream();

File file = new File(savePath);

if (!file.exists())

{

file.mkdir();

}

String apkFile = saveFileName;

File ApkFile = new File(apkFile);

FileOutputStream fos = new FileOutputStream(ApkFile);

int count = 0;

byte buf[] = new byte[24];

{

int numread = is.read(buf);

count += numread;

progress = (int) (((float) count / length) * 100);

// 更新進度

mHandler.sendEmptyMessage(DOWN_UPDATE);

if (numread <= 0)

{

// 下載完成通知安裝

mHandler.sendEmptyMessage(DOWN_OVER);

break;

}

fos.write(buf, 0, numread);

} while (!interceptFlag);// 點擊取消就停止下載.

fos.close();

is.close();

}

catch (MalformedURLException e)

{

e.printStackTrace();

}

catch (IOException e)

{

e.printStackTrace();

}

};

/**

* 下載apk

* @param url

private void downloadApk()

{

downLoadThread = new Thread(mdownApkRunnable);

downLoadThread.start();

}

/**

* 安裝apk

* @param url

private void installApk()

{

if (downloadDialog.isShowing())

{

downloadDialog.dismiss();

}

File apkfile = new File(saveFileName);

if (!apkfile.exists())

{

return;

}

Intent i = new Intent(Intent.ACTION_VIEW);

i.setDataAndType(Uri.parse("file://" + apkfile.toString()),

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

mContext.startActivity(i);

}

MainAcitivity：

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package com.tutor.update;

import com.tutor.config.UpdateApplication;

import android.app.Activity;

import android.os.Bundle;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

import android.widget.Toast;

public class MainAcitivity extends Activity

{

@Override

public void onCreate(Bundle savedInstanceState)

{

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

Button bt = (Button) findViewById(R.id.button1);

bt.setOnClickListener(new OnClickListener()

{

@Override

public void onClick(View v)

{ www.aiwalls.com

if (UpdateApplication.getUpdateInfo(MainAcitivity.this))

{

UpdateApplication.newUpdate(MainAcitivity.this);

}

else

{

Toast.makeText(MainAcitivity.this, "程序已經是最新狀態！謝謝使用",

Toast.LENGTH_SHORT).show();

}

});

}

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