Question

我正在使用意图将我的URL从我的Android应用程序传递到WebBrowser以下载文件。但是一旦下载开始，它就会保留在WebBrowser。所以我想在下载开始后关闭WebBrowser并显示应用程序。

以下是我用来传递URL的代码：

js hide: false console: true babel:

} else if (tabId == R.id.tab_b) {
    webView.loadUrl("file:///android_asset/D.html");
    webView.setDownloadListener(new DownloadListener() {
        public void onDownloadStart(String url, String userAgent, String contentDisposition, String mimetype, long contentLength) {
            Intent intent = new Intent(Intent.ACTION_VIEW);
            intent.setData(Uri.parse(url));
            Toast.makeText(getApplicationContext(), "Downloading File",   To notify the Client that the file is being downloaded
            Toast.LENGTH_LONG).show();
            startActivity(intent);
        }
    });
}

最后，如果可能，我可以在不打开WebBrowser的情况下下载我的应用程序吗？

Answer 1

强行下载：

 webView.setDownloadListener(new DownloadListener() {
        @Override
        public void onDownloadStart(String aUrl, String userAgent, String contentDisposition, String mimetype, long contentLength) {


                    DownloadManager.Request request = new DownloadManager.Request(Uri.parse(aUrl));
                    request.allowScanningByMediaScanner();
                    CookieManager cookieManager = CookieManager.getInstance();
                    String cookie = cookieManager.getCookie(aUrl);
                    request.addRequestHeader("Cookie", cookie);
                    request.addRequestHeader("User-Agent", userAgent);
                    Environment.getExternalStorageDirectory();
                    request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
                    request.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, fileName);
                    DownloadManager dm = (DownloadManager) getSystemService(DOWNLOAD_SERVICE);
                    dm.enqueue(request);
                    registerReceiver(onComplete, new IntentFilter(DownloadManager.ACTION_DOWNLOAD_COMPLETE));





        }


});

并且不要忘记在下载后添加这些方法以打开pdf：

BroadcastReceiver onComplete=new BroadcastReceiver() {
        public void onReceive(Context ctxt, Intent intent) {
// HERE YOU ADD WHAT YOU WANT AFTER DONWLOAD     
 }
            };

同样不要忘记在：

中声明perrmission

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

如何在下载开始后关闭WebBrowser并显示应用程序？

1 个答案: