Android自动安装APK

如何解决Android自动安装APK

| 我有一个webview，基本上可以拦截各种链接，视频，apk，href。 现在，我想要的是一旦我从网址下载了APK，它将自动安装： 这是“ 0”代码的一部分：

        else if(url.endsWith(\".apk\")) 
        {
        mWebView.setDownloadListener(new DownloadListener() {
                    public void onDownloadStart(final String url,String userAgent,String contentDisposition,String mimetype,long contentLength) {   
                    }
                    });
        Intent intent = new Intent(Intent.ACTION_VIEW,Uri.parse(url));
        startActivity(intent);  
        return true;

如果我加

intent.setDataAndType(Uri.parse(url),\"application/vnd.android.package-archive\");

比应用程序崩溃... 关于做什么的任何想法？ 编辑：我能够自动开始下载和安装包（使用sleep（））：

        else if(url.endsWith(\".apk\")) 
        {
        mWebView.setDownloadListener(new DownloadListener() {
                    public void onDownloadStart(final String url,Uri.parse(url));
        startActivity(intent); 
        String fileName = Environment.getExternalStorageDirectory() + \"/download/\" + url.substring( url.lastIndexOf(\'/\')+1,url.length() );
        install(fileName);
        return true;

并且，正如vitamoe建议的那样：

protected void install(String fileName) {
    Intent install = new Intent(Intent.ACTION_VIEW);
    install.setDataAndType(Uri.fromFile(new File(fileName)),\"application/vnd.android.package-archive\");
    startActivity(install);
}

但是，我无法捕获下载完成的确切时间，可能需要创建自己的下载功能并且不使用浏览器的功能，有什么想法吗？     

解决方法

要在没有浏览器的情况下下载文件，请执行以下操作。像这样：

String apkurl = \"http://your.url.apk\";
InputStream is;
try {
    URL url = new URL(apkurl);
    HttpURLConnection con = (HttpURLConnection) url.openConnection();
    con.setRequestMethod(\"GET\");
    con.setDoOutput(true);
    con.connect();
    is = con.getInputStream();
} catch (SSLException e) {
    // HTTPS can end in SSLException \"Not trusted server certificate\"
}

// Path and File where to download the APK
String path = Environment.getExternalStorageDirectory() + \"/download/\";
String fileName = apkurl.substring(apkurl.lastIndexOf(\'/\') + 1);
File dir = new File(path);
dir.mkdirs(); // creates the download directory if not exist
File outputFile = new File(dir,fileName);
FileOutputStream fos = new FileOutputStream(outputFile);

// Save file from URL to download directory on external storage
byte[] buffer = new byte[1024];
int len = 0;
while ((len = is.read(buffer)) != -1) {
    fos.write(buffer,len);
}
fos.close();
is.close();

// finally,install the downloaded file
install(path + fileName);

    ,你可以临时将其下载到sd卡中，并与软件包管理器一起安装，然后再次将其删除。

protected void install(String fileName) {
    Intent install = new Intent(Intent.ACTION_VIEW);
    install.setDataAndType(Uri.fromFile(new File(fileName)),\"application/vnd.android.package-archive\");
    startActivity(install);
}

    ,由于Android安全模型，无法自动安装Apk文件。     ,为什么不尝试下载管理和广播接收器，它们会在下载完成后进行拦截？下载管理器适用于ANDROID 2.3+ 这里的例子：

myWebView.setWebViewClient(new WebViewClient() {
    @Override
    public void onReceivedError(WebView view,int errorCode,String description,String failingUrl) {
            Log.d(\"WEB_VIEW_TEST\",\"error code:\" + errorCode + \" - \" + description);
    }

    @Override
    public boolean shouldOverrideUrlLoading(WebView view,String url) {
            // handle different requests for different type of files
            // this example handles downloads requests for .apk and .mp3 files
            // everything else the webview can handle normally
            if (url.endsWith(\".apk\")) {
                Uri source = Uri.parse(url);
                // Make a new request pointing to the .apk url
                DownloadManager.Request request = new DownloadManager.Request(source);
                // appears the same in Notification bar while downloading
                request.setDescription(\"Description for the DownloadManager Bar\");
                request.setTitle(\"YourApp.apk\");
                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
                    request.allowScanningByMediaScanner();
                    request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
                }
                // save the file in the \"Downloads\" folder of SDCARD
                request.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS,\"SmartPigs.apk\");
                // get download service and enqueue file
                DownloadManager manager = (DownloadManager) getSystemService(Context.DOWNLOAD_SERVICE);
                manager.enqueue(request);
            }
            else if(url.endsWith(\".mp3\")) {
                // if the link points to an .mp3 resource do something else
            }
            // if there is a link to anything else than .apk or .mp3 load the URL in the webview
            else view.loadUrl(url);
            return true;                
    }
});

这里的完整答案：用户bboydflo 将文件下载到Android WebView（代码中没有下载事件或HTTPClient） 广播接收器在下载完成时进行拦截

    private BroadcastReceiver onDownloadComplete = new BroadcastReceiver() {
    @Override
    public void onReceive(Context context,Intent intent) {
        String action = intent.getAction();
        if (DownloadManager.ACTION_DOWNLOAD_COMPLETE.equals(action)) {
            // toast here - download complete 
        }
    }
};

记得像这样在主要活动中调校Recevier：

registerReceiver(onDownloadComplete,new IntentFilter(DownloadManager.ACTION_DOWNLOAD_COMPLETE));