Question

我使用WebView创建了一个Android应用程序，但我遇到的唯一问题是文件是在默认浏览器中打开而不是下载。

这是WebActivity代码：

public class WebActivity extends Activity {
private WebView webView;

public void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    webView = (WebView) findViewById(R.id.webView01);
    webView.getSettings().setJavaScriptEnabled(true);
    webView.setWebViewClient(new myWebClient()
    {
    @Override
    public void onPageFinished(WebView view, String url) {

        findViewById(R.id.imageLoading1).setVisibility(View.GONE);

        findViewById(R.id.webView01).setVisibility(View.VISIBLE);
    }


});     
    webView.loadUrl("domain");
    webView.setDownloadListener(new DownloadListener() {
        public void onDownloadStart(String url, String userAgent,
                String contentDisposition, String mimetype,
                long contentLength) {
          Intent i = new Intent(Intent.ACTION_VIEW);
          i.setData(Uri.parse(url));
          startActivity(i);
        }
    }); 

}


public class myWebClient extends WebViewClient
{
    @Override
    public void onPageStarted(WebView view, String url, Bitmap favicon) {
        super.onPageStarted(view, url, favicon);
    }

    @Override
    public boolean shouldOverrideUrlLoading(WebView view, String url) {

        view.loadUrl(url);
        return true;
    }
}

 @Override
  public boolean onKeyDown(int keyCode, KeyEvent event)
  {
   if ((keyCode == KeyEvent.KEYCODE_BACK) && webView.canGoBack()) {
     webView.goBack();
     return true;
 }
 return super.onKeyDown(keyCode, event);
  }
  }

Answer 1

浏览器应用程序正在打开，因为它是用于处理Intent将URL作为其数据的相应应用程序，这是您在DownloadListener中使用的内容。

如果您不希望浏览器启动，请使用InputStream中的URL打开DownloadListener并自行从文件中获取字节。

public void saveUrl(final String filename, final String urlString)
    throws MalformedURLException, IOException {
   BufferedInputStream in = null;
   FileOutputStream fout = null;
   try {
       in = new BufferedInputStream(new URL(urlString).openStream());
       fout = new FileOutputStream(filename);

       final byte data[] = new byte[1024];
       int count;
       while ((count = in.read(data, 0, 1024)) != -1) {
          fout.write(data, 0, count);
       }
   } finally {
       if (in != null) {
           in.close();
       }
       if (fout != null) {
           fout.close();
       }
   }
}

如何强制文件在应用程序中下载而不是在默认浏览器中显示

1 个答案: