断点续传 app版本更新

来源：互联网发布：gitv电视直播软件好吗编辑：程序博客网时间：2024/06/11 19:49

版本不同，开启服务，根据判断条件，如果未下载或未下载完，开启AsyncTast进行断点下载。

将基本数据保存在了SharedPreferences中

其中字段：

dlversion：版本号存储

dlstate：状态，1，下载中，还没下载完，2，已经下载完

Finished:保存下载的进度

isfirst:是否第一次安装，模拟的版本控制，实际应用中并不需要这个字段

经过测试，可以实现，文件断网或清理后台后，再次下载能够断点下载

还有服务开启一个全局dialog，可是有的手机会禁止悬浮窗，所以下载完后不会弹出dialog，注意手动开启下，还有实际开发中，不建议用此dialog，可以尝试用下窗口activity.

基本的逻辑思路和需要的资源文件都在下面

部分代码：

MainActivity

package com.example.tianf.myapplication;

import android.content.Intent;

import android.content.SharedPreferences;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

import android.widget.Toast;

public class MainActivity extends AppCompatActivity implements View.OnClickListener {

    private Button no_file, file_no_version, file_version;

    private String version;

    private SharedPreferences mSharedPreferences;

    private SharedPreferences.Editor mEditor;

    private boolean isFirst=true;

//    private String url = "http://123.129.203.149/imtt.dd.qq.com/16891/237CB1256C5982BA4697817845F992A4.apk?mkey=58f4936ac26ff6c9&f=a601&c=0&fsname=com.tianci.xueshengzhuan_9.03_903.apk&csr=1bbd&p=.apk";

    private String url ="http://27.221.28.172/imtt.dd.qq.com/16891/F1B90DFC2A91F2E7F54D3F2919C7383B.apk?mkey=58f5f2bbc26ff6c9&f=b208&c=0&fsname=com.mfxsjd_1.3.01.10493_1010301.apk&csr=1bbd&p=.apk";

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        initView();

        initListen();

        mSharedPreferences = getSharedPreferences("DownloadInfo",

                MODE_PRIVATE);

        mEditor = mSharedPreferences.edit();

        boolean isfirst = mSharedPreferences.getBoolean("isfirst", true);

        if(isfirst){

            mEditor.putString("dlversion", "1.0");

            mEditor.putBoolean("isfirst",false);

}

        mEditor.commit();

}

    private void initView() {

        no_file = (Button) findViewById(R.id.no_file);

        file_no_version = (Button) findViewById(R.id.file_no_version);

        file_version = (Button) findViewById(R.id.file_version);

}

    private void initListen() {

        no_file.setOnClickListener(this);

        file_no_version.setOnClickListener(this);

        file_version.setOnClickListener(this);

}

    @Override

    public void onClick(View v) {

        //从服务器获取的版本号

        switch (v.getId()){

            case R.id.no_file:

                break;

            case R.id.file_no_version:

                version="1.0";

                Intent intent=new Intent(this,MyFirstService.class);

                intent.putExtra("version",version);

                intent.putExtra("url",url);

                startService(intent);

                break;

            case R.id.file_version:

                version="2.0";

                Intent intent2=new Intent(this,MyFirstService.class);

                intent2.putExtra("version",version);

                intent2.putExtra("url",url);

                startService(intent2);

                break;

}

}

}

MyFirstService

package com.example.tianf.myapplication;

import android.app.AlertDialog;

import android.app.Dialog;

import android.app.Service;

import android.content.Context;

import android.content.DialogInterface;

import android.content.Intent;

import android.content.SharedPreferences;

import android.net.Uri;

import android.os.Environment;

import android.os.Handler;

import android.os.IBinder;

import android.os.SystemClock;

import android.text.TextUtils;

import android.util.Log;

import android.view.LayoutInflater;

import android.view.View;

import android.view.WindowManager;

import android.widget.Button;

import android.widget.Toast;

import java.io.File;

import java.io.IOException;

import static android.R.attr.version;

import static com.example.tianf.myapplication.Constants.AppName;

/**

 * <pre>

 *    Author :  天府萧炎恋熏儿

 *    Time   :  

 *    Usage  :

 *    desc   :

 *    other  :

 * </pre>

*/

public class MyFirstService extends Service implements MyTast.DoBackListener {

    MyTast myTast;

    File apkFile;

    private String url = "";

    private String myVersion="";

    private SharedPreferences mSharedPreferences;

    private SharedPreferences.Editor mEditor;

    Handler mHandler=new Handler();

    String filePath;

    private final static String MYURL = "http://123.129.203.149/imtt.dd.qq.com/16891/237CB1256C5982BA4697817845F992A4.apk?mkey=58f4936ac26ff6c9&f=a601&c=0&fsname=com.tianci.xueshengzhuan_9.03_903.apk&csr=1bbd&p=.apk";

    // 通过startService方法启动服务时，该方法不会运行

    @Override

    public IBinder onBind(Intent intent) {

        // TODO Auto-generated method stub

        return null;

}

    //当服务对象不存在时，调用此方法

    @Override

    public void onCreate() {

        // TODO Auto-generated method stub

        super.onCreate();

        Log.i("====", "=========  onCreate");

}

    @Override

    public int onStartCommand(Intent intent, int flags, int startId) {

        // TODO Auto-generated method stub

//        getDialog();

//        showClearDialog();

        myVersion=intent.getStringExtra("version");

        url=intent.getStringExtra("url");

        mSharedPreferences = getSharedPreferences("DownloadInfo",

                MODE_PRIVATE);

        mEditor = mSharedPreferences.edit();

            int   dlstate = mSharedPreferences.getInt("dlstate", 3);

            String dlversion=mSharedPreferences.getString("dlversion","");

            //首先判断正在下载的版本和服务器版本是否一致

            if(!TextUtils.isEmpty(dlversion)&&dlversion.equals(myVersion)){

                switch (dlstate){

                    //正在下载，但是还没下载完全

                    case 1:

                        //继续下载

                        getTast();

                        Log.i("state","正在下载，但是还没下载完全");

                        Toast.makeText(this, "正在下载，但是还没下载完全", Toast.LENGTH_SHORT).show();

                        break;

                    //下载完成，拥有完整app包

                    case 2:

                        showClearDialog();

                        Log.i("state","下载完成，拥有完整app包");

                        Toast.makeText(this, "安装版本已是"+myVersion+",不需要下载", Toast.LENGTH_SHORT).show();

                        break;

                    default:

                        getTast();

                        Log.i("state","其它情况");

                        Toast.makeText(this, "其它情况", Toast.LENGTH_SHORT).show();

                        break;

}

            }else {

                //如果服务器版本和本地版本不一致，删除本地重新下载

                //不同则删除之前的版本，重新下载

                mEditor.remove("Finished");

                mEditor.remove("dlstate");

                mEditor.remove("dlversion");

                mEditor.commit();

                getTast();

                Log.i("state", "版本不同，重新下载");

                Toast.makeText(this, "版本不同，重新下载", Toast.LENGTH_SHORT).show();

}

        return START_NOT_STICKY;

}

    @Override

    public void onDestroy() {

        // TODO Auto-generated method stub

        Log.i("====", "=========   onDestroy");

        super.onDestroy();

        stopSelf();

}

/**

     * @Title: installApk @Description: 安装APP @param @param

     * context @param @param file @return void 返回类型 @throws

*/

    public  void installApk(Context context, File file) {

        if (!file.exists()) {

            return;

}

        Intent intent = new Intent();

        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

        intent.setAction(Intent.ACTION_VIEW);

        intent.setDataAndType(Uri.fromFile(file), "application/vnd.android.package-archive");

        context.startActivity(intent);

        stopSelf();

}

    public String getApkDownloadPath() {

        File sdDir = null;

        boolean sdCardExist = Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED); // 判断sd卡是否存在

        if (sdCardExist) {

            sdDir = Environment.getExternalStorageDirectory();// 获取跟目录

        } else {

            sdDir = Environment.getDownloadCacheDirectory();//放到系统下载目录

}

        return sdDir.toString() + Constants.fileName;

}

    Dialog mclearDialog;

    public void showClearDialog() {

        if (mclearDialog == null) {

             mclearDialog = new Dialog(getApplicationContext(), R.style.dialog);

             mclearDialog.getWindow().setType(WindowManager.LayoutParams.TYPE_SYSTEM_ALERT);

            View dialogLayout = LayoutInflater.from(getApplicationContext()).inflate(R.layout.dialog_new_version, null);

            Button next_updata = (Button) dialogLayout.findViewById(R.id.next_updata);

            Button now_updata = (Button) dialogLayout.findViewById(R.id.now_updata);

            next_updata.setOnClickListener(new View.OnClickListener() {

                @Override

                public void onClick(View v) {

                    if (mclearDialog != null) {

                        mclearDialog.dismiss();

                        mclearDialog = null;

}

                    stopSelf();

}

});

            now_updata.setOnClickListener(new View.OnClickListener() {

                @Override

                public void onClick(View v) {

                    if (mclearDialog != null) {

                        mclearDialog.dismiss();

                        mclearDialog = null;

}

                    installApk(getApplicationContext(),apkFile);

}

});

            mclearDialog.setContentView(dialogLayout);

}

        mclearDialog.setCanceledOnTouchOutside(true);

        mclearDialog.setCancelable(true);

        mclearDialog.show();

}

    public void getTast(){

        myTast = new MyTast(this);

        myTast.setContext(getApplicationContext());

        myTast.execute(url,getApkDownloadPath(),Constants.AppName,myVersion);

}

    @Override

    public void onBack() {

        String filePath = getApkDownloadPath() + Constants.AppName;

        apkFile = new File(filePath);

        showClearDialog();

}

}

MyTast

package com.example.tianf.myapplication;

import android.content.Context;

import android.content.Intent;

import android.content.SharedPreferences;

import android.os.AsyncTask;

import android.util.Log;

import java.io.File;

import java.io.IOException;

import java.io.InputStream;

import java.io.RandomAccessFile;

import java.net.HttpURLConnection;

import java.net.URL;

import static android.content.Context.MODE_PRIVATE;

/**

 * <pre>

 *    Author :  天府萧炎恋熏儿

 *    Time   : 

 *    Usage  :

 *    desc   :

 *    other  :

 * </pre>

*/

/*

     * 异步处理

*/

class MyTast extends AsyncTask<String, Integer, String> {

    private Context context;

    private int length;

    private int start;

    private SharedPreferences mSharedPreferences;

    private SharedPreferences.Editor mEditor;

    public int mFinished;

    // 下载地址

    private String DIRSTR="";

    private String FILENAME = "";

    private String myVersion="";

    public interface DoBackListener {

        void onBack();

}

    DoBackListener listener;

    public MyTast(DoBackListener listener) {

        this.listener = listener;

}

    @Override

    protected String doInBackground(String... params) {

        // 获取文件长度

        getFileLength(params[0]);

        DIRSTR=params[1];

        FILENAME=params[2];

        myVersion=params[3];

        // 执行下载任务

        return download(params[0]);

}

    @Override

    protected void onPostExecute(String result) {

        super.onPostExecute(result);

        Log.i("mtag", result);

        if("下载完成!".equals(result)){

            listener.onBack();

}

}

    @Override

    protected void onProgressUpdate(Integer... values) {

        super.onProgressUpdate(values);

        // 更新进度条

        Log.i("mtag","更新进度===="+values[0]);

}

/*

     * 获取文件长度

*/

    private void getFileLength(String string) {

        HttpURLConnection connection = null;

        try {

            connection = (HttpURLConnection) new URL(string)

                    .openConnection();

            connection.setRequestMethod("GET");

            connection.setConnectTimeout(3000);

            if (connection.getResponseCode() != 200) {

                return;

}

            length = connection.getContentLength();

        } catch (Exception e) {

            e.printStackTrace();

        } finally {

            if (connection != null) {

                connection.disconnect();

}

}

}

/*

     * 下载任务

*/

    private String download(String string) {

        HttpURLConnection connection = null;

        InputStream in = null;

        RandomAccessFile raf = null;

        try {

            // 从SharedPreferences取出DownloadInfo里的下载进度值

            mSharedPreferences = context.getSharedPreferences("DownloadInfo",

                    MODE_PRIVATE);

            mEditor = mSharedPreferences.edit();

            start = mSharedPreferences.getInt("Finished", 0);

            mEditor.putString("dlversion", myVersion);

            mEditor.putInt("dlstate", 1);

            mEditor.commit();

            mFinished = start;

            connection = (HttpURLConnection) new URL(string)

                    .openConnection();

            connection.setRequestMethod("GET");

            connection.setConnectTimeout(3000);

            Log.d("length: ", length + "");

            connection.setRequestProperty("Range", "bytes=" + start + "-"

                    + length);

            if (connection.getResponseCode() != 206) {

                return "206";

}

            in = connection.getInputStream();

            File file = new File(DIRSTR, FILENAME);

            raf = new RandomAccessFile(file, "rwd");

            Log.d("start:", start + "");

            raf.seek(start);

            byte[] buffer = new byte[1024 * 4];

            int len;

            while ((len = in.read(buffer)) != -1) {

                raf.write(buffer, 0, len);

                mFinished += len;

                mEditor.putInt("Finished", mFinished);

                mEditor.commit();

                // 设置进度条的值

                publishProgress(mFinished * 100 / length);

}

            // 下载完成,从SharedPreferences移除下载进度

            mEditor.remove("Finished");

            mEditor.putInt("dlstate", 2);

            mEditor.commit();

            context.stopService(new Intent(context,MyFirstService.class));

            return "下载完成!";

        } catch (Exception e) {

            e.printStackTrace();

            mEditor.putInt("Finished", mFinished);

            mEditor.commit();

            context.stopService(new Intent(context,MyFirstService.class));

            return e.getMessage();

        } finally {

            try {

                if (raf != null) {

                    raf.close();

}

                if (in != null) {

                    in.close();

}

                if (connection != null) {

                    connection.disconnect();

}

            } catch (IOException e) {

                e.printStackTrace();

                return e.getMessage();

}

}

}

    public void setContext(Context context){

        this.context=context;

}

}

<?xml version="1.0" encoding="utf-8"?><LinearLayout    xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="wrap_content"    android:layout_height="match_parent"    android:background="@drawable/white_radius_bg_shape"    android:orientation="vertical">    <TextView        android:id="@+id/exit"        android:layout_width="250dp"        android:layout_height="wrap_content"        android:layout_gravity="center_horizontal"        android:layout_margin="25dp"        android:gravity="center"        android:text="APP有更新了！"        android:textColor="@color/black"        android:textSize="15sp"        android:drawableTop="@mipmap/ic_launcher"        />    <View        android:layout_width="match_parent"        android:layout_height="2px"        android:background="@color/gray_line"/>    <LinearLayout        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:orientation="horizontal">        <Button            android:id="@+id/next_updata"            android:layout_width="0dp"            android:layout_height="wrap_content"            android:layout_weight="1"            android:background="@null"            android:text="下次再说"            android:padding="15dp"            android:textColor="@color/black"            android:textSize="15sp"/>        <View            android:layout_width="2px"            android:layout_height="match_parent"            android:background="@color/gray_line"/>        <Button            android:id="@+id/now_updata"            android:layout_width="0dp"            android:layout_height="wrap_content"            android:layout_weight="1"            android:background="@null"            android:text="立即更新"            android:padding="15dp"            android:textColor="@color/black"            android:textSize="15sp"/>    </LinearLayout></LinearLayout>

<?xml version="1.0" encoding="utf-8"?><resources>    <color name="colorPrimary">#3F51B5</color>    <color name="colorPrimaryDark">#5daee7</color>    <color name="colorAccent">#5daee7</color>    <!-- 米色 -->    <color name="wheat">#F5DEB3</color>    <color name="white">#FFFFFF</color>    <color name="red">#f10303</color>    <color name="black">#1e1d1d</color>    <color name="round_outside_color">#FFFEFF</color>    <color name="round_inside_color">#FFFEFF</color>    <color name="theme_blue">#5daee7</color>    <color name="line_color">#ebebeb</color>    <color name="hui_1">#666</color>    <color name="hui_1ban">#3f666666</color>    <color name="hui2">#888</color>    <color name="hui2_ban">#ee888888</color>    <color name="hui3">#ebebeb</color>    <color name="hui4">#d6d7dc</color>    <color name="theme_background">@color/white</color>    <color name="theme_background2">#F3F4F6</color>    <color name="light_green">#82DA43</color>    <color name="theme_title">#5daee7</color>    <color name="side_bar_text">#4A4A4A</color>    <color name="shadow_bg">#66000000</color>    <color name="edit_bg">#EFEFF4</color>    <color name="darker_gray">#9b9b9b</color>    <color name="navpage">#FFE1E8EB</color>    <!--灰色分割线-->    <color name="gray_line">#cccccc</color>    <!--bigpictrue-->    <color name="bigpicture_background">#55000000</color>    <color name="bigpicture_backgroundselcect">#2bc912</color>    <!--动态圈名字颜色-->    <color name="dy_namered">#f04f43</color>    <!--我的页面名字颜色-->    <color name="mine_name">#2a2a2a</color>    <!--所有button里面的文字的字体颜色-->    <color name="all_bt_textcolor">#ffffff</color></resources>

<style name="dialog" parent="@android:style/Theme.Dialog">    <item name="android:windowFrame">@null</item>    <item name="android:windowIsFloating">true</item>    <item name="android:windowIsTranslucent">true</item>    <item name="android:windowNoTitle">true</item>    <item name="android:background">@android:color/transparent</item>    <item name="android:windowBackground">@android:color/transparent</item>    <item name="android:backgroundDimEnabled">true</item>    <item name="android:backgroundDimAmount">0.6</item></style>

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