一般的安卓app都有自动更新功能,实现app的更新,以让用户体验新版本的功能,这里也是项目中用到的,今天就来总结一下,代码应该有点多,还请耐心点哈。
安卓应用实现自动更新比较简单,这里跟大家介绍下:

第一步 服务器端:

  • 服务端提供一个借口,或者网址,我这里就用的服务器是tomcat,这里提供一个网址如下:


//也就是一个json数据接口
  public static final String UPDATE_URL = "http://192.168.1.103:8080/update.json";

我们来看下json数据参数:

{
//app名字
appname: "爱新闻1.1",
//服务器版本号
serverVersion: "2",
//服务器标志
serverFlag: "1",
//是否强制更新
lastForce: "1",
//apk下载地址,这里我已经下载了官方的apk,放到了服务器里面
updateurl: "http://192.168.1.103:8080/36Kr.apk",
//版本的更新的描述
upgradeinfo: "V1.1版本更新,你想不想要试一下哈!!!"
}

好了以上的是服务器端的信息,在这里不需要多说了,我们来看下客户端的吧。

第二步 客户端需要实现:

首先我们要去解析服务端给的json,那么我们就要来创建一个model类了(代码过多,这里只有字段,getter和setter方法自己创建):

//app名字
    private String appname;
    //服务器版本
    private String serverVersion;
    //服务器标志
    private String serverFlag;
    //强制升级
    private String lastForce;
    //app最新版本地址
    private String updateurl;
    //升级信息
    private String upgradeinfo;

在这里使用了一个辅助类,基本和model字段差不多:

public class UpdateInformation {
    public static String appname = MyApplication.getInstance()
            .getResources().getString(R.string.app_name);
    public static int localVersion = 1;// 本地版本
    public static String versionName = ""; // 本地版本名
    public static int serverVersion = 1;// 服务器版本
    public static int serverFlag = 0;// 服务器标志
    public static int lastForce = 0;// 之前强制升级版本
    public static String updateurl = "";// 升级包获取地址
    public static String upgradeinfo = "";// 升级信息

    public static String downloadDir = "wuyinlei";// 下载目录
}

我们知道,我们在进入app的时候,这个时候如果检测到服务器端有了新的版本,就回弹出提示框,提示我们更新。这个我们在MainActivity里面处理逻辑(onCreate()方法里面):

OkhttpManager.getAsync(Config.UPDATE_URL, new OkhttpManager.DataCallBack() {
            @Override
            public void requestFailure(Request request, Exception e) {

            }
            @Override
            public void requestSuccess(String result) {
                try {
                    Log.d("wuyiunlei",result);
                    JSONObject object = new JSONObject(result);
                    UpdateInfoModel model = new UpdateInfoModel();
                    model.setAppname(object.getString("appname"));
                    model.setLastForce(object.getString("lastForce"));
                    model.setServerFlag(object.getString("serverFlag"));
                    model.setServerVersion(object.getString("serverVersion"));
                    model.setUpdateurl(object.getString("updateurl"));
                    model.setUpgradeinfo(object.getString("upgradeinfo"));
                    tmpMap.put(DeliverConsts.KEY_APP_UPDATE, model);
                } catch (JSONException e) {
                    e.printStackTrace();
                }
                //发送广播
                sendBroadcast(new Intent(UpdateReceiver.UPDATE_ACTION));
            }
        });

当然了,我们也要注册和结束广播:

/**
     * 广播注册
     */
    private void registerBroadcast() {
        mUpdateReceiver = new UpdateReceiver(false);
        mIntentFilter = new IntentFilter(UpdateReceiver.UPDATE_ACTION);
        this.registerReceiver(mUpdateReceiver, mIntentFilter);
    }

/**
     * 广播卸载
     */
    private void unRegisterBroadcast() {
        try {
            this.unregisterReceiver(mUpdateReceiver);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

好了,接下来我们看下我们自定义的广播接收者UpdateReceiver .java:

/**
 * 版本更新升级 广播接受者
 *
 */
public class UpdateReceiver extends BroadcastReceiver {
    private AlertDialog.Builder mDialog;
    public static final String UPDATE_ACTION = "wuyinlei_aixinwen";
    private SharedPreferencesHelper mSharedPreferencesHelper;
    private boolean isShowDialog;

    public UpdateReceiver() {
    }

    public UpdateReceiver(boolean isShowDialog) {
        super();
        this.isShowDialog = isShowDialog;
    }

    @Override
    public void onReceive(Context context, Intent intent) {
        mSharedPreferencesHelper = mSharedPreferencesHelper
                .getInstance(MyApplication.getInstance());
        //当然了,这里也可以直接new处hashmap
        HashMap<String, Object> tempMap = MyApplication.getInstance()
                .getTempMap();
        UpdateInfoModel model = (UpdateInfoModel) tempMap
                //就是一个标志
                .get(DeliverConsts.KEY_APP_UPDATE);
        try {

            /**
             * 获取到当前的本地版本
             */
            UpdateInformation.localVersion = MyApplication
                    .getInstance()
                    //包管理独享
                    .getPackageManager()
                    //包信息
                    .getPackageInfo(
                            MyApplication.getInstance()
                                    .getPackageName(), 0).versionCode;
            /**
             * 获取到当前的版本名字
             */
            UpdateInformation.versionName = MyApplication
                    .getInstance()
                    .getPackageManager()
                    .getPackageInfo(
                            MyApplication.getInstance()
                                    .getPackageName(), 0).versionName;
        } catch (Exception e) {
            e.printStackTrace();
        }
        //app名字
        UpdateInformation.appname = MyApplication.getInstance()
                .getResources().getString(R.string.app_name);
        //服务器版本
        UpdateInformation.serverVersion = Integer.parseInt(model
                .getServerVersion());
        //服务器标志
        UpdateInformation.serverFlag = Integer.parseInt(model.getServerFlag());
        //强制升级
        UpdateInformation.lastForce = Integer.parseInt(model.getLastForce());
        //升级地址
        UpdateInformation.updateurl = model.getUpdateurl();
        //升级信息
        UpdateInformation.upgradeinfo = model.getUpgradeinfo();

        //检查版本
        checkVersion(context);

    }

    /**
     * 检查版本更新
     * 
     * @param context
     */
    public void checkVersion(Context context) {
        if (UpdateInformation.localVersion < UpdateInformation.serverVersion) {
            // 需要进行更新
            mSharedPreferencesHelper.putIntValue(
                    //有新版本
                    SharedPreferencesTag.IS_HAVE_NEW_VERSION, 1);
            //更新
            update(context);
        } else {
            mSharedPreferencesHelper.putIntValue(
                    SharedPreferencesTag.IS_HAVE_NEW_VERSION, 0);
            if (isShowDialog) {
                //没有最新版本,不用升级
                noNewVersion(context);
            }
            clearUpateFile(context);
        }
    }

    /**
     * 进行升级
     * 
     * @param context
     */
    private void update(Context context) {
        if (UpdateInformation.serverFlag == 1) {
            // 官方推荐升级
            if (UpdateInformation.localVersion < UpdateInformation.lastForce) {
                //强制升级
                forceUpdate(context);
            } else {
                //正常升级
                normalUpdate(context);
            }

        } else if (UpdateInformation.serverFlag == 2) {
            // 官方强制升级
            forceUpdate(context);
        }
    }

    /**
     * 没有新版本
     * @param context
     */
    private void noNewVersion(final Context context) {
        mDialog = new AlertDialog.Builder(context);
        mDialog.setTitle("版本更新");
        mDialog.setMessage("当前为最新版本");
        mDialog.setNegativeButton("确定", new DialogInterface.OnClickListener() {

            @Override
            public void onClick(DialogInterface dialog, int which) {
                dialog.dismiss();
            }
        }).create().show();
    }

    /**
     * 强制升级 ,如果不点击确定升级,直接退出应用
     * 
     * @param context
     */
    private void forceUpdate(final Context context) {
        mDialog = new AlertDialog.Builder(context);
        mDialog.setTitle("版本更新");
        mDialog.setMessage(UpdateInformation.upgradeinfo);

        mDialog.setPositiveButton("确定", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                Intent mIntent = new Intent(context, UpdateService.class);
                mIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                mIntent.putExtra("appname", UpdateInformation.appname);
                mIntent.putExtra("appurl", UpdateInformation.updateurl);
                //启动服务
                context.startService(mIntent);
            }
        }).setNegativeButton("退出", new DialogInterface.OnClickListener() {

            @Override
            public void onClick(DialogInterface dialog, int which) {
                // 直接退出应用
                //ManagerActivity.getInstance().finishActivity();
                System.exit(0);
            }
        }).setCancelable(false).create().show();
    }

    /**
     * 正常升级,用户可以选择是否取消升级
     * 
     * @param context
     */
    private void normalUpdate(final Context context) {
        mDialog = new AlertDialog.Builder(context);
        mDialog.setTitle("版本更新");
        mDialog.setMessage(UpdateInformation.upgradeinfo);
        mDialog.setPositiveButton("确定", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                Intent mIntent = new Intent(context, UpdateService.class);
                mIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                //传递数据
                mIntent.putExtra("appname", UpdateInformation.appname);
                mIntent.putExtra("appurl", UpdateInformation.updateurl);
                context.startService(mIntent);
            }
        }).setNegativeButton("取消", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                dialog.dismiss();
            }
        }).create().show();
    }

    /**
     * 清理升级文件
     * 
     * @param context
     */
    private void clearUpateFile(final Context context) {
        File updateDir;
        File updateFile;
        if (Environment.MEDIA_MOUNTED.equals(Environment
                .getExternalStorageState())) {
            updateDir = new File(Environment.getExternalStorageDirectory(),
                    UpdateInformation.downloadDir);
        } else {
            updateDir = context.getFilesDir();
        }
        updateFile = new File(updateDir.getPath(), context.getResources()
                .getString(R.string.app_name) + ".apk");
        if (updateFile.exists()) {
            Log.d("update", "升级包存在,删除升级包");
            updateFile.delete();
        } else {
            Log.d("update", "升级包不存在,不用删除升级包");
        }
    }
}

接下最后我们来看下服务吧UpdateService .java:

/**
 * 不要忘记注册,在mainfest文件中
*/
public class UpdateService extends Service {
    // BT字节参考量
    private static final float SIZE_BT = 1024L;
    // KB字节参考量
    private static final float SIZE_KB = SIZE_BT * 1024.0f;
    // MB字节参考量
    private static final float SIZE_MB = SIZE_KB * 1024.0f;

    private final static int DOWNLOAD_COMPLETE = 1;// 完成
    private final static int DOWNLOAD_NOMEMORY = -1;// 内存异常
    private final static int DOWNLOAD_FAIL = -2;// 失败

    private String appName = null;// 应用名字
    private String appUrl = null;// 应用升级地址
    private File updateDir = null;// 文件目录
    private File updateFile = null;// 升级文件

    // 通知栏
    private NotificationManager updateNotificationManager = null;
    private Notification updateNotification = null;

    private Intent updateIntent = null;// 下载完成
    private PendingIntent updatePendingIntent = null;// 在下载的时候

    @Override
    public IBinder onBind(Intent arg0) {
        return null;
    }

    @Override
    public void onStart(Intent intent, int startId) {
        super.onStart(intent, startId);
        appName = intent.getStringExtra("appname");
        appUrl = intent.getStringExtra("appurl");
        updateNotificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
        updateNotification = new Notification();
        //通知图标
        updateNotification.icon = R.mipmap.head;
        //通知信息描述
        updateNotification.tickerText = "正在下载 " + appName;
        updateNotification.when = System.currentTimeMillis();
        updateIntent = new Intent(this, MyApplication.class);
        updatePendingIntent = PendingIntent.getActivity(this, 0, updateIntent,
                0);
        updateNotification.contentIntent = updatePendingIntent;
        updateNotification.contentIntent.cancel();
        updateNotification.contentView = new RemoteViews(getPackageName(),
                //这个布局很简单,就是一个图片和两个textview,分别是正在下载和下载进度
                R.layout.download_notification);
        updateNotification.contentView.setTextViewText(
                R.id.download_notice_name_tv, appName + " 正在下载");
        updateNotification.contentView.setTextViewText(
                R.id.download_notice_speed_tv, "0MB (0%)");
        updateNotificationManager.notify(0, updateNotification);
        new UpdateThread().execute();
    }

    /**
     * 在这里使用了asynctask异步任务来下载
     */
    class UpdateThread extends AsyncTask<Void, Void, Integer> {
        @Override
        protected Integer doInBackground(Void... params) {
            return downloadUpdateFile(appUrl);
        }

        @Override
        protected void onPostExecute(Integer result) {
            super.onPostExecute(result);

            if (result == DOWNLOAD_COMPLETE) {
                Log.d("update", "下载成功");
                String cmd = "chmod 777 " + updateFile.getPath();
                try {
                    Runtime.getRuntime().exec(cmd);
                } catch (IOException e) {
                    e.printStackTrace();
                }
                Uri uri = Uri.fromFile(updateFile);
                //安装程序
                Intent installIntent = new Intent(Intent.ACTION_VIEW);
                installIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                installIntent.setDataAndType(uri,
                        "application/vnd.android.package-archive");
                updatePendingIntent = PendingIntent.getActivity(
                        UpdateService.this, 0, installIntent, 0);
                updateNotification.contentIntent = updatePendingIntent;
                updateNotification.contentView.setTextViewText(
                        R.id.download_notice_speed_tv,
                        getString(R.string.update_notice_finish));
                updateNotification.tickerText = appName + "下载完成";
                updateNotification.when = System.currentTimeMillis();
                updateNotification.defaults = Notification.DEFAULT_SOUND;
                updateNotification.flags |= Notification.FLAG_AUTO_CANCEL;
                updateNotificationManager.notify(0, updateNotification);
                //启动安装程序
                UpdateService.this.startActivity(installIntent);
                stopSelf();
            } else if (result == DOWNLOAD_NOMEMORY) {
                //如果内存有问题
                updateNotification.tickerText = appName + "下载失败";
                updateNotification.when = System.currentTimeMillis();
                updateNotification.contentView.setTextViewText(
                        R.id.download_notice_speed_tv,
                        getString(R.string.update_notice_nomemory));
                updateNotification.flags |= Notification.FLAG_AUTO_CANCEL;
                updateNotification.defaults = Notification.DEFAULT_SOUND;
                updateNotificationManager.notify(0, updateNotification);
                stopSelf();
            } else if (result == DOWNLOAD_FAIL) {
                //下载失败
                updateNotification.tickerText = appName + "下载失败";
                updateNotification.when = System.currentTimeMillis();
                updateNotification.contentView.setTextViewText(
                        R.id.download_notice_speed_tv,
                        getString(R.string.update_notice_error));
                updateNotification.flags |= Notification.FLAG_AUTO_CANCEL;
                updateNotification.defaults = Notification.DEFAULT_SOUND;
                updateNotificationManager.notify(0, updateNotification);
                stopSelf();
            }
        }

    }

    /**
     * 下载更新程序文件
     * @param downloadUrl   下载地址
     * @return
     */
    private int downloadUpdateFile(String downloadUrl) {
        int count = 0;
        long totalSize = 0;   //总大小
        long downloadSize = 0;   //下载的大小
        URI uri = null;

        //这个已经舍弃了,要用的话,就要加上org.apache.http.legacy.jar这个jar包
        HttpGet httpGet = null;
        try {
            uri = new URI(downloadUrl);
            httpGet = new HttpGet(uri);
        } catch (URISyntaxException e) {
            String encodedUrl = downloadUrl.replace(' ', '+');
            httpGet = new HttpGet(encodedUrl);
            e.printStackTrace();
        }
        HttpClient httpClient = new DefaultHttpClient();
        HttpResponse httpResponse = null;
        FileOutputStream fos = null;
        InputStream is = null;
        try {
            httpResponse = httpClient.execute(httpGet);
            if (httpResponse != null) {
                int stateCode = httpResponse.getStatusLine().getStatusCode();
                if (stateCode == HttpStatus.SC_OK) {
                    HttpEntity entity = httpResponse.getEntity();
                    if (entity != null) {
                        totalSize = entity.getContentLength();
                        //如果内存可用
                        if (MemoryAvailable(totalSize)) {
                            is = entity.getContent();
                            if (is != null) {
                                fos = new FileOutputStream(updateFile, false);
                                byte buffer[] = new byte[4096];
                                int readsize = 0;
                                while ((readsize = is.read(buffer)) > 0) {
                                    fos.write(buffer, 0, readsize);
                                    downloadSize += readsize;
                                    if ((count == 0)
                                            || (int) (downloadSize * 100 / totalSize) >= count) {
                                        count += 5;
                                        updateNotification.contentView
                                                .setTextViewText(
                                                        R.id.download_notice_speed_tv,
                                                        getMsgSpeed(downloadSize,totalSize));
                                        updateNotificationManager.notify(0,
                                                updateNotification);
                                    }
                                }
                                fos.flush();
                                if (totalSize >= downloadSize) {
                                    return DOWNLOAD_COMPLETE;
                                } else {
                                    return DOWNLOAD_FAIL;
                                }
                            }
                        } else {
                            if (httpGet != null) {
                                httpGet.abort();
                            }
                            return DOWNLOAD_NOMEMORY;
                        }
                    }
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                if (fos != null) {
                    fos.close();
                }
                if (is != null) {
                    is.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
            if (httpClient != null) {
                httpClient.getConnectionManager().shutdown();
            }
        }
        return DOWNLOAD_FAIL;
    }

    /**
     * 可用内存大小
     * @param fileSize
     * @return
     */
    private boolean MemoryAvailable(long fileSize) {
        fileSize += (1024 << 10);
        if (MemoryStatus.externalMemoryAvailable()) {
            if ((MemoryStatus.getAvailableExternalMemorySize() <= fileSize)) {
                if ((MemoryStatus.getAvailableInternalMemorySize() > fileSize)) {
                    createFile(false);
                    return true;
                } else {
                    return false;
                }
            } else {
                createFile(true);
                return true;
            }
        } else {
            if (MemoryStatus.getAvailableInternalMemorySize() <= fileSize) {
                return false;
            } else {
                createFile(false);
                return true;
            }
        }
    }

    /**
     * 获取下载进度
     * @param downSize
     * @param allSize
     * @return
     */
    public static String getMsgSpeed(long downSize, long allSize) {
        StringBuffer sBuf = new StringBuffer();
        sBuf.append(getSize(downSize));
        sBuf.append("/");
        sBuf.append(getSize(allSize));
        sBuf.append(" ");
        sBuf.append(getPercentSize(downSize, allSize));
        return sBuf.toString();
    }

    /**
     * 获取大小
     * @param size
     * @return
     */
    public static String getSize(long size) {
        if (size >= 0 && size < SIZE_BT) {
            return (double) (Math.round(size * 10) / 10.0) + "B";
        } else if (size >= SIZE_BT && size < SIZE_KB) {
            return (double) (Math.round((size / SIZE_BT) * 10) / 10.0) + "KB";
        } else if (size >= SIZE_KB && size < SIZE_MB) {
            return (double) (Math.round((size / SIZE_KB) * 10) / 10.0) + "MB";
        }
        return "";
    }

    /**
     * 获取到当前的下载百分比
     * @param downSize   下载大小
     * @param allSize    总共大小
     * @return
     */
    public static String getPercentSize(long downSize, long allSize) {
        String percent = (allSize == 0 ? "0.0" : new DecimalFormat("0.0")
                .format((double) downSize / (double) allSize * 100));
        return "(" + percent + "%)";
    }


    /**
     * 创建file文件
     * @param sd_available    sdcard是否可用
     */
    private void createFile(boolean sd_available) {
        if (sd_available) {
            updateDir = new File(Environment.getExternalStorageDirectory(),
                    UpdateInformation.downloadDir);
        } else {
            updateDir = getFilesDir();
        }
        updateFile = new File(updateDir.getPath(), appName + ".apk");
        if (!updateDir.exists()) {
            updateDir.mkdirs();
        }
        if (!updateFile.exists()) {
            try {
                updateFile.createNewFile();
            } catch (IOException e) {
                e.printStackTrace();
            }
        } else {
            updateFile.delete();
            try {
                updateFile.createNewFile();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}

MemoryStatus工具类:

public class MemoryStatus {
    private static final int ERROR = -1;

    // 判断SD卡是否存�?
    static public boolean externalMemoryAvailable() {
        return Environment.getExternalStorageState().equals(
                Environment.MEDIA_MOUNTED);
    }

    // 获取内部存储器有用空间大�?
    static public long getAvailableInternalMemorySize() {
        File path = Environment.getDataDirectory();
        StatFs stat = new StatFs(path.getPath());
        long blockSize = stat.getBlockSize();
        long availableBlocks = stat.getAvailableBlocks();
        return availableBlocks * blockSize;
    }

    // 获取内部存储器空间�?大小
    static public long getTotalInternalMemorySize() {
        File path = Environment.getDataDirectory();
        StatFs stat = new StatFs(path.getPath());
        long blockSize = stat.getBlockSize();
        long totalBlocks = stat.getBlockCount();
        return totalBlocks * blockSize;
    }

    // 获取SD卡有用空间大小,错误返回-1
    static public long getAvailableExternalMemorySize() {
        if (externalMemoryAvailable()) {
            File path = Environment.getExternalStorageDirectory();
            StatFs stat = new StatFs(path.getPath());
            long blockSize = stat.getBlockSize();
            long availableBlocks = stat.getAvailableBlocks();
            return availableBlocks * blockSize;
        } else {
            return ERROR;
        }
    }

    // 获取SD卡�?空间大小,错误返�?1
    static public long getTotalExternalMemorySize() {
        if (externalMemoryAvailable()) {
            File path = Environment.getExternalStorageDirectory();
            StatFs stat = new StatFs(path.getPath());
            long blockSize = stat.getBlockSize();
            long totalBlocks = stat.getBlockCount();
            return totalBlocks * blockSize;
        } else {
            return ERROR;
        }
    }

    /**
     * 根据给定的文件的路径来计算文件夹的大�?
     * 
     * @param dir
     *            文件的路�?
     * @return 文件夹的大小
     */
    static public long getFileSize(File dir) {
        if (dir == null) {
            return 0;
        }
        if (!dir.isDirectory()) {
            return 0;
        }
        long dirSize=0;
        File[] files=dir.listFiles();
        for (File file : files) {
            if(file.isFile())
            {
                dirSize+=file.length();
            }else if (file.isDirectory()) {
                dirSize+=getFileSize(file); //如果是目�?那就进行递归 来计算文件的大小
            }
        }
        return dirSize;
    }

    // 把文件大小转化字符串
    static public String formatSize(long size) {
        Log.d("zttjiangqq", "文件的大小为:"+size);
        String suffix = null;

        if(size==0)
        {
            return "";
        }

        if (size >= 1024) {
            suffix = "KB";
            size /= 1024;
            if (size >= 1024) {
                suffix = "MB";
                size /= 1024;
                if (size >= 1024) {
                    suffix = "G";
                    size /= 1024;
                }
            }
        }
        StringBuilder resultBuffer = new StringBuilder(Long.toString(size));
        int commaOffset = resultBuffer.length() - 3;
        while (commaOffset > 0) {
            resultBuffer.insert(commaOffset, ',');
            commaOffset -= 3;
        }
        if (suffix != null)
            resultBuffer.append(suffix);
        return resultBuffer.toString();
    }
}

这个时候,可能看到服务怎么这么多代码啊,我头都大了,不要着急,我们一步一步说明一下,这里逻辑很简单,就是在通知栏中,用到了通知,这个时候我们有三种情况,造成了我们好多代码的重复,(你也可以不必考虑那么多情况),还有,里面有了几个工具类,没有提取出来,分别是获取sdcard大小是否可用(创建文件夹),获取当前下载进度,获取应用大小,下载文件,这里也可以使用第三方框架来下载。

里面的重要的地方都有注释,如果有疑问,可用互相讨论一下。

这里我们就简单的上几张图看看吧:

提示更新图:

android app如何自动更新 安卓自动更新app_android app如何自动更新

更新下载通知:

android app如何自动更新 安卓自动更新app_ide_02


下载完成后安装图:

android app如何自动更新 安卓自动更新app_android app如何自动更新_03


最新版应用主界面图(这里我下载的是36kr官方的app,我在应用中心下载好的,嘿嘿):

android app如何自动更新 安卓自动更新app_服务器_04


当然了哈,这里我写的还是有点问题的,每次进入都会提示,如果有必要,也可以实现是否要自动更新,用服务,也就是点击是否自动更新,如果不是自动更新,就不会去触发服务端接口信息,如果是自动更新,就去触发,来获取最新的app版本。