Android更新工具包

实现的逻辑，创建一个UpdateManager类，单例模式构建。第一步网络请求检测是否有更新，通过Handler对象发送消息，提示检测结果或者是否下载。
第二步下载安装包，通过Handler对象发送消息，更新进度条和完成后进行安装。下载的时候先放进临时文件，下载完成后改成正式的安装包名字。
/** * 应用程序更新工具包 */public class UpdateManager {    private static final int DOWN_NOSDCARD = 0;    private static final int DOWN_UPDATE = 1;    private static final int DOWN_OVER = 2;    private static final int DIALOG_TYPE_LATEST = 0;    private static final int DIALOG_TYPE_FAIL   = 1;    private static UpdateManager updateManager;    private Context mContext;    //通知对话框    private Dialog noticeDialog;    //下载对话框    private Dialog downloadDialog;    //'已经是最新' 或者 '无法获取最新版本' 的对话框    private Dialog latestOrFailDialog;    //进度条    private ProgressBar mProgress;    //显示下载数值    private TextView mProgressText;    //查询动画    private ProgressDialog mProDialog;    //进度值    private int progress;    //下载线程    private Thread downLoadThread;    //终止标记    private boolean interceptFlag;    //提示语    private String updateMsg = "";    //返回的安装包url    private String apkUrl = "";    //下载包保存路径    private String savePath = "";    //apk保存完整路径    private String apkFilePath = "";    //临时下载文件路径    private String tmpFilePath = "";    //下载文件大小    private String apkFileSize;    //已下载文件大小    private String tmpFileSize;    private String curVersionName = "";    private int curVersionCode;    private Update mUpdate;    private  String mUpdateVersion;    private Handler mHandler = new Handler(){        public void handleMessage(Message msg) {            switch (msg.what) {                case DOWN_UPDATE:                    mProgress.setProgress(progress);                    mProgressText.setText(tmpFileSize + "/" + apkFileSize);                    break;                case DOWN_OVER:                    downloadDialog.dismiss();                    installApk();                    break;                case DOWN_NOSDCARD:                    downloadDialog.dismiss();                    //Toast.makeText(mContext, "无法下载安装文件，请检查SD卡是否挂载").show();                    break;            }        };    };    public static UpdateManager getUpdateManager() {        if(updateManager == null){            updateManager = new UpdateManager();        }        updateManager.interceptFlag = false;        return updateManager;    }    /**     * 检查App更新     * @param context     * @param isShowMsg 是否显示提示消息     */    public void checkAppUpdate(Context context, final boolean isShowMsg){        this.mContext = context;        getCurrentVersion();        if(isShowMsg){            if(mProDialog == null)                mProDialog = ProgressDialog.show(mContext, null, "正在检测，请稍后...", true, true);            else if(mProDialog.isShowing() || (latestOrFailDialog!=null && latestOrFailDialog.isShowing()))                return;        }        final Handler handler = new Handler(){            public void handleMessage(Message msg) {                //进度条对话框不显示 - 检测结果也不显示                if(mProDialog != null && !mProDialog.isShowing()){                    return;                }                //关闭并释放释放进度条对话框                if(isShowMsg && mProDialog != null){                    mProDialog.dismiss();                    mProDialog = null;                }                //显示检测结果                if(msg.what == 1){                    mUpdate = (Update)msg.obj;                    if(mUpdate != null ){//更新                        if(!mUpdate.getVersionName().equals(AppConfig.APP_Version) ) {                            apkUrl = mUpdate.getDownloadUrl();                            updateMsg =mUpdate.getUpdateLog();                            showNoticeDialog();                        }                        else if(isShowMsg){                            showLatestOrFailDialog(DIALOG_TYPE_LATEST);                        }                    }                }else if(isShowMsg){                    showLatestOrFailDialog(DIALOG_TYPE_FAIL);                }            }        };        new Thread(new Runnable() {            @Override            public void run() {                Message msg = new Message();                Update  update =new Update();                try {                    // Update update = ApiClient.checkVersion((AppContext)mContext.getApplicationContext());                    Document doc = Jsoup.connect("url").timeout(30000).get();                    Element e = doc.select("p.version").first();                    update.setVersionName(e.ownText());                    e = doc.select("p.desc").first();                    update.setUpdateLog(e.ownText());                    e = doc.select("p.url").first();                    update.setDownloadUrl(e.ownText());                } catch (Exception e) {                    update.setVersionName(AppConfig.APP_Version);                }                msg.what = 1;                msg.obj = update;                handler.sendMessage(msg);            }        }).start();    }    /**     * 显示'已经是最新'或者'无法获取版本信息'对话框     */    private void showLatestOrFailDialog(int dialogType) {        if (latestOrFailDialog != null) {            //关闭并释放之前的对话框            latestOrFailDialog.dismiss();            latestOrFailDialog = null;        }        AlertDialog.Builder builder = new Builder(mContext);        builder.setTitle("系统提示");        if (dialogType == DIALOG_TYPE_LATEST) {            builder.setMessage("您当前已经是最新版本");        } else if (dialogType == DIALOG_TYPE_FAIL) {            builder.setMessage("无法获取版本更新信息");        }        builder.setPositiveButton("确定", null);        latestOrFailDialog = builder.create();        latestOrFailDialog.show();    }    /**     * 获取当前客户端版本信息     */    private void getCurrentVersion(){        try {            PackageInfo info = mContext.getPackageManager().getPackageInfo(mContext.getPackageName(), 0);            curVersionName = info.versionName;            curVersionCode = info.versionCode;        } catch (NameNotFoundException e) {            e.printStackTrace(System.err);        }    }    /**     * 显示版本更新通知对话框     */    private void showNoticeDialog(){        AlertDialog.Builder builder = new Builder(mContext);        builder.setTitle("软件版本更新");        builder.setMessage(updateMsg);        builder.setPositiveButton("立即更新", new OnClickListener() {            @Override            public void onClick(DialogInterface dialog, int which) {                dialog.dismiss();                showDownloadDialog();            }        });        builder.setNegativeButton("以后再说", new OnClickListener() {            @Override            public void onClick(DialogInterface dialog, int which) {                dialog.dismiss();            }        });        noticeDialog = builder.create();        noticeDialog.show();    }    /**     * 显示下载对话框     */    private void showDownloadDialog(){        AlertDialog.Builder builder = new Builder(mContext);        builder.setTitle("正在下载新版本");        final LayoutInflater inflater = LayoutInflater.from(mContext);        View v = inflater.inflate(R.layout.update_progress, null);        mProgress = (ProgressBar)v.findViewById(R.id.update_progress);        mProgressText = (TextView) v.findViewById(R.id.update_progress_text);        builder.setView(v);        builder.setNegativeButton("取消", new OnClickListener() {            @Override            public void onClick(DialogInterface dialog, int which) {                dialog.dismiss();                interceptFlag = true;            }        });        builder.setOnCancelListener(new OnCancelListener() {            @Override            public void onCancel(DialogInterface dialog) {                dialog.dismiss();                interceptFlag = true;            }        });        downloadDialog = builder.create();        downloadDialog.setCanceledOnTouchOutside(false);        downloadDialog.show();        downloadApk();    }    private Runnable mdownApkRunnable = new Runnable() {        @Override        public void run() {            try {                String apkName = "YourApp_"+mUpdate.getVersionName()+".apk";                String tmpApk = "YourApp_"+mUpdate.getVersionName()+".tmp";                //判断是否挂载了SD卡                String storageState = Environment.getExternalStorageState();                if(storageState.equals(Environment.MEDIA_MOUNTED)){                    savePath = Environment.getExternalStorageDirectory().getAbsolutePath() + "/YourApp/Update/";                    File file = new File(savePath);                    if(!file.exists()){                        file.mkdirs();                    }                    apkFilePath = savePath + apkName;                    tmpFilePath = savePath + tmpApk;                }                //没有挂载SD卡，无法下载文件                if(apkFilePath == null || apkFilePath == ""){                    mHandler.sendEmptyMessage(DOWN_NOSDCARD);                    return;                }                File ApkFile = new File(apkFilePath);                //是否已下载更新文件                if(ApkFile.exists()){                    downloadDialog.dismiss();                    installApk();                    return;                }                //输出临时下载文件                File tmpFile = new File(tmpFilePath);                FileOutputStream fos = new FileOutputStream(tmpFile);                URL url = new URL(apkUrl);                HttpURLConnection conn = (HttpURLConnection)url.openConnection();                conn.connect();                int length = conn.getContentLength();                InputStream is = conn.getInputStream();                //显示文件大小格式：2个小数点显示                DecimalFormat df = new DecimalFormat("0.00");                //进度条下面显示的总文件大小                apkFileSize = df.format((float) length / 1024 / 1024) + "MB";                int count = 0;                byte buf[] = new byte[1024];                do{                    int numread = is.read(buf);                    count += numread;                    //进度条下面显示的当前下载文件大小                    tmpFileSize = df.format((float) count / 1024 / 1024) + "MB";                    //当前进度值                    progress =(int)(((float)count / length) * 100);                    //更新进度                    mHandler.sendEmptyMessage(DOWN_UPDATE);                    if(numread <= 0){                        //下载完成 - 将临时下载文件转成APK文件                        if(tmpFile.renameTo(ApkFile)){                            //通知安装                            mHandler.sendEmptyMessage(DOWN_OVER);                        }                        break;                    }                    fos.write(buf,0,numread);                }while(!interceptFlag);//点击取消就停止下载                fos.close();                is.close();            } catch (MalformedURLException e) {                e.printStackTrace();            } catch(IOException e){                e.printStackTrace();            }        }    };    /**     * 下载apk     */    private void downloadApk(){        downLoadThread = new Thread(mdownApkRunnable);        downLoadThread.start();    }    /**     * 安装apk     */    private void installApk(){        File apkfile = new File(apkFilePath);        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);    }}
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