Android 自动检测更新apk版本

Android 自动检测更新apk版本

1）、功能类实现public class UpdateManager {    private ProgressBar mProgressBar;//进度条    private TextView tv1;    private TextView tv2;    private Dialog mDownloadDialog;//对话框    private String mSavePath;//apk保存地址    private int mProgress;//进度值    private boolean mIsCancel = false;//是否取消下载标示符    private static final int DOWNLOADING = 1;//apk下载中    private static final int DOWNLOAD_FINISH = 2;//apk下载完毕    private float length;    private static final String PATH = "http://www.jcpeixun.com/app_client_api/app_version.aspx";//更新地址    private String mVersion_code;//软件升级标示号    private String mVersion_name = "开心ing.apk";//apk名    private String mVersion_desc;//更新详情    private String mVersion_path;//apk下载地址    private Context mContext;//上下文    public UpdateManager(Context context) {        mContext = context;    }    private Handler mGetVersionHandler = new Handler(){        public void handleMessage(Message msg) {            JSONObject jsonObject = (JSONObject) msg.obj;            System.out.println(jsonObject.toString());            Log.e("----------",jsonObject.toString());            try {                mVersion_code = jsonObject.getString("version");                //mVersion_name = jsonObject.getString("version_name");                //mVersion_desc = jsonObject.getString("version_desc");                mVersion_path = jsonObject.getString("downurl");                Log.e("version ",jsonObject.getString("version"));                Log.e("downurl ",jsonObject.getString("downurl"));                if (isUpdate()){                    //Toast.makeText(mContext, "需要更新", Toast.LENGTH_SHORT).show();                    // 显示提示更新对话框                    showNoticeDialog();                } else{                    Toast.makeText(mContext, "已是最新版本", Toast.LENGTH_SHORT).show();                }            } catch (Exception e){                e.printStackTrace();            }        };    };    private Handler mUpdateProgressHandler = new Handler(){        public void handleMessage(Message msg) {            switch (msg.what){                case DOWNLOADING:                    // 设置进度条                    mProgressBar.setProgress(mProgress);                    tv1.setText( mProgress + "/100");                    float len = length/1024/1024;//将length转换为M单位                    float b = (float)(Math.round(len*100))/100;//保留两位小数点                    tv2.setText( b+"M");                    break;                case DOWNLOAD_FINISH:                    // 隐藏当前下载对话框                    mDownloadDialog.dismiss();                    // 安装 APK 文件                    installAPK();                    break;                default:                    break;            }        };    };    /*     * 检测软件是否需要更新     */    public void checkUpdate() {        RequestQueue requestQueue = Volley.newRequestQueue(mContext);        JsonObjectRequest request = new JsonObjectRequest(PATH, null, new Listener<JSONObject>() {            @Override            public void onResponse(JSONObject jsonObject) {                Message msg = Message.obtain();                msg.obj = jsonObject;                mGetVersionHandler.sendMessage(msg);            }        }, new Response.ErrorListener() {            @Override            public void onErrorResponse(VolleyError arg0) {                System.out.println(arg0.toString());            }        });        requestQueue.add(request);    }    /*     * 与本地版本比较判断是否需要更新     */    protected boolean isUpdate() {        //int serverVersion = Integer.parseInt(mVersion_code);        double serverVersion = Double.parseDouble(mVersion_code);        double localVersion = 1;        try {            //获得当前apk版本号versionCode            localVersion = mContext.getPackageManager().getPackageInfo(mContext.getPackageName(), 0).versionCode;        } catch (NameNotFoundException e) {            e.printStackTrace();        }        if (serverVersion > localVersion)            return true;        else            return false;    }    /*     * 有更新时显示提示对话框     */    protected void showNoticeDialog() {        AlertDialog.Builder builder = new Builder(mContext);        builder.setTitle("提示");        String message = "软件有更新，要下载安装吗？\n" + mVersion_desc;        builder.setMessage(message);        builder.setPositiveButton("更新", new OnClickListener() {            @Override            public void onClick(DialogInterface dialog, int which) {                // 隐藏当前对话框                dialog.dismiss();                // 显示下载对话框                showDownloadDialog();            }        });        builder.setNegativeButton("下次再说", new OnClickListener() {            @Override            public void onClick(DialogInterface dialog, int which) {                // 隐藏当前对话框                dialog.dismiss();            }        });        builder.create().show();    }    /*     * 显示正在下载对话框     */    protected void showDownloadDialog() {        AlertDialog.Builder builder = new Builder(mContext);        builder.setTitle("下载中");        View view = LayoutInflater.from(mContext).inflate(R.layout.dialog_progress, null);        mProgressBar = (ProgressBar) view.findViewById(R.id.id_progress);        tv1 = (TextView) view.findViewById(R.id.tv1);        tv2 = (TextView) view.findViewById(R.id.tv2);        builder.setView(view);        // 设置按钮(左)        builder.setNegativeButton("取消", new OnClickListener() {            @Override            public void onClick(DialogInterface dialog, int which) {                // 隐藏当前对话框                dialog.dismiss();                // 设置下载状态为取消                mIsCancel = true;            }        });        // 设置按钮(右)        builder.setNeutralButton("隐藏", new OnClickListener() {            @Override            public void onClick(DialogInterface dialog, int which) {                dialog.dismiss();            }        });        mDownloadDialog = builder.create();        mDownloadDialog.show();        // 下载文件        downloadAPK();    }    /*     * 开启新线程下载文件     */    private void downloadAPK() {        new Thread(new Runnable() {            @Override            public void run() {                try{//检查sd是否挂载                    if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)){                        String sdPath = Environment.getExternalStorageDirectory() + "/";                        mSavePath = sdPath + "MyDownload";                        File dir = new File(mSavePath);                        if (!dir.exists())                            dir.mkdir();                        // 下载文件                        HttpURLConnection conn = (HttpURLConnection) new URL(mVersion_path).openConnection();                        conn.connect();                        InputStream is = conn.getInputStream();                        length = conn.getContentLength();                        File apkFile = new File(mSavePath, mVersion_name);                        FileOutputStream fos = new FileOutputStream(apkFile);                        int count = 0;                        byte[] buffer = new byte[1024];                        while (!mIsCancel){                            int numread = is.read(buffer);                            count += numread;                            // 计算进度条的当前位置                            mProgress = (int) ((count/length) * 100);                            // 更新进度条                            mUpdateProgressHandler.sendEmptyMessage(DOWNLOADING);                            // 下载完成                            if (numread < 0){                                mUpdateProgressHandler.sendEmptyMessage(DOWNLOAD_FINISH);                                break;                            }                            fos.write(buffer, 0, numread);                        }                        fos.close();                        is.close();                    }                }catch(Exception e){                    e.printStackTrace();                }            }        }).start();    }    /*     * 下载到本地后执行安装     */    protected void installAPK() {        File apkFile = new File(mSavePath, mVersion_name);        if (!apkFile.exists())            return;        Intent intent = new Intent(Intent.ACTION_VIEW);        Uri uri = Uri.parse("file://" + apkFile.toString());        intent.setDataAndType(uri, "application/vnd.android.package-archive");        mContext.startActivity(intent);    }}2）、进度条对话框布局dialog_progress.xml<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical"    tools:context=".MainActivity">    <ProgressBar        android:id="@+id/id_progress"        style="?android:attr/progressBarStyleHorizontal"        android:layout_width="match_parent"        android:layout_height="14dp"        android:layout_marginLeft="7dp"        android:layout_marginRight="7dp"        android:layout_marginTop="5dp"        android:progress="14" />    <LinearLayout        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:layout_marginBottom="14dp"        android:orientation="horizontal">        <TextView            android:id="@+id/tv1"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_marginLeft="16dp"            android:layout_weight="1"            android:gravity="left|center"            android:text="左"            android:textSize="16dp" />        <TextView            android:id="@+id/tv2"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_gravity="right"            android:layout_marginRight="16dp"            android:layout_weight="1"            android:gravity="right|center"            android:text="右"            android:textSize="16dp" />    </LinearLayout></LinearLayout>3）、调用实现new UpdateManager(this).checkUpdate();4）、原项目视频地址：http://www.jikexueyuan.com/course/1607.html5）、效果图展示：