在Android设备上以编程方式从市场以外的网站下载,安装和删除.apk文件

Question

我已经开发了一些安卓游戏并创建了.apk文件..
我把这些.apk文件放在我的网站上(比如说:http://www.sush19.com/androidApp/apk/myGame1.apk)是否有可能当此网址访问其他应用onClick()事件时直接安装此游戏.

我不希望用户下载.apk罚款到他们的SD卡然后手动安装,事实上游戏应该直接安装到设备上.

我在我的另一个应用onClick()事件中尝试下面的代码:

Intent goToMarket = new Intent(Intent.ACTION_VIEW).setData(Uri.parse("http://www.sush19.com/androidApp/apk/myGame1.apk"));
startActivity(goToMarket);

我知道上面的代码不正确..但任何人都可以对此发表评论..

Answer 1

以下代码允许用户在Android设备上下载,安装和删除.apk文件.我创建了一个Android应用程序(Say App1),它可以在SD卡上下载其他Android应用程序.在按钮上单击App1,它将从我自己的网站上下载.apk文件,在下载完成时它将提示用户安装最近从App1下载的应用程序,安装完成后,下载的.apk文件将从SD卡.

在我的App1主要活动中:我已经包含按钮
在我的情况下,我从App1启动我的其他应用程序,如果没有安装在设备上,我从我的网站下载并安装它.
按钮单击事件方法

public OnClickListener ButtonClicked = new OnClickListener() {
        public void onClick(View v) {
            Intent i;
            PackageManager manager = getPackageManager();
            try {
                i = manager.getLaunchIntentForPackage("com.mycompany.mygame");
                if (i == null)
                    throw new PackageManager.NameNotFoundException();
                i.addCategory(Intent.CATEGORY_LAUNCHER);
                startActivity(i);
            } catch (PackageManager.NameNotFoundException e) {
                InstallAPK downloadAndInstall = new InstallAPK();
                progress.setCancelable(false);
                progress.setMessage("Downloading...");
                downloadAndInstall.setContext(getApplicationContext(), progress);
                downloadAndInstall.execute("http://xyz/android/gamedownload.aspx?name=mygame.apk");
            }
        }
    };

InstallAPK Class

public class InstallAPK extends AsyncTask<String,Void,Void> {

    ProgressDialog progressDialog;
    int status = 0;

    private Context context;
    public void setContext(Context context, ProgressDialog progress){
        this.context = context;
        this.progressDialog = progress;
    }

    public void onPreExecute() {
        progressDialog.show();
    }

    @Override
    protected Void doInBackground(String... arg0) {
        try {
            URL url = new URL(arg0[0]);
            HttpURLConnection c = (HttpURLConnection) url.openConnection();
            c.setRequestMethod("GET");
            c.setDoOutput(true);
            c.connect();

            File sdcard = Environment.getExternalStorageDirectory();
            File myDir = new File(sdcard,"Android/data/com.mycompany.android.games/temp");
            myDir.mkdirs();
            File outputFile = new File(myDir, "temp.apk");
            if(outputFile.exists()){
                outputFile.delete();
            }
            FileOutputStream fos = new FileOutputStream(outputFile);

            InputStream is = c.getInputStream();

            byte[] buffer = new byte[1024];
            int len1 = 0;
            while ((len1 = is.read(buffer)) != -1) {
                fos.write(buffer, 0, len1);
            }
            fos.flush();
            fos.close();
            is.close();

            Intent intent = new Intent(Intent.ACTION_VIEW);
            intent.setDataAndType(Uri.fromFile(new File(sdcard,"Android/data/com.mycompany.android.games/temp/temp.apk")), "application/vnd.android.package-archive");
            intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); // without this flag android returned a intent error!
            context.startActivity(intent);


        } catch (FileNotFoundException fnfe) {
            status = 1;
            Log.e("File", "FileNotFoundException! " + fnfe);
        }

        catch(Exception e)
        {
            Log.e("UpdateAPP", "Exception " + e);
        }
        return null;
    }

    public void onPostExecute(Void unused) {
        progressDialog.dismiss();
        if(status == 1)
            Toast.makeText(context,"Game Not Available",Toast.LENGTH_LONG).show();
    }
}

要从SD卡中删除下载的文件,我使用了BroadcastReceiver类

@Override
    public void onReceive(Context context, Intent intent) { 

        try
        {
            String packageName = intent.getData().toString() + getApplicationName(context, intent.getData().toString(), PackageManager.GET_UNINSTALLED_PACKAGES);

            if(intent.getAction().equals("android.intent.action.PACKAGE_ADDED")){
                File sdcard = Environment.getExternalStorageDirectory();
                File file = new File(sdcard,"Android/data/com.mycompany.android.games/temp/temp.apk");
                file.delete();
            }
        }catch(Exception e){Toast.makeText(context, "onReceive()", Toast.LENGTH_LONG).show();}
    }

不要忘记在AndroidManifest.xml中包含以下权限

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

在我的网站中,我创建了两个.aspx页面,并将它放在Android文件夹和.apk文件中,位于Visual Studio
First页面中的Android/Games文件夹中:marketplace.aspx.cs

public partial class marketplace : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            DirectoryInfo directory = new DirectoryInfo(Server.MapPath("~/Android/Games"));
            int counter = 0;
            foreach (FileInfo file in directory.GetFiles())
            {
                HyperLink link = new HyperLink();
                link.ID = "Link" + counter++;
                link.Text = file.Name;
                link.NavigateUrl = "gamedownload.aspx?name=" + file.Name;

                Page.Controls.Add(link);
                Page.Controls.Add(new LiteralControl("<br/>"));

            }
        }

        protected void Click(object sender, EventArgs e)
        {
            Response.Redirect("gamedownload.aspx");
        }
    }

第二页:gamedownload.aspx.cs

public partial class gamedownload : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            string fileName = Request.QueryString["name"].ToString();
            Response.ContentType = "application/octet-stream";
            Response.AddHeader("Content-Disposition", "attachment;filename=" + fileName);
            Response.TransmitFile(Server.MapPath("~/Android/Games/" + fileName));
            Response.End();
        }
    }

我在Web.config文件中添加了以下代码

<system.webServer>
    <staticContent>
      <mimeMap fileExtension=".apk"
               mimeType="application/vnd.android.package-archive" />
    </staticContent>
  </system.webServer>

我希望这些信息对某些人来说是完全有用的.