处理我的应用程序中的下载意图 [英] Handle download intents in my app

问题描述

我的webview应用程序已经可以处理外部URL的罚款(打开来自外部应用程序(如viber，浏览器等)的链接)，就像这样-(

My webview app already handles external URL's fine (opens links from external apps like viber, browsers, etc) like this- (i got this code from here)

// get URL from browsable intent filter
    TextView uri = (TextView) findViewById(R.id.urlField);
    // get the url
    url = getIntent().getDataString();
    Uri data = getIntent().getData();
    if (data == null) {
        uri.setText("");
    } else {
        uri.setText(getIntent().getData().toString());
        fadeout();
    }
    // }

在我的网络视图设置中

// Load URL from Browsable intent filter if there is a valid URL pasted
    if (uri.length() > 0)
        webView.loadUrl(url);
    else
        // dont load

这是我在网络视图中处理下载的方式

this is how i handle downloads within my webview

// download manager
    webView.setDownloadListener(new DownloadListener() {
        @Override
        public void onDownloadStart(String url, String userAgent,
                String contentDisposition, String mimeType,
                long contentLength) {
            DownloadManager.Request request = new DownloadManager.Request(
                    Uri.parse(url));
            request.setMimeType(mimeType);
            String cookies = CookieManager.getInstance().getCookie(url);
            request.addRequestHeader("cookie", cookies);
            request.addRequestHeader("User-Agent", userAgent);
            request.setDescription("Downloading file...");
            request.setTitle(URLUtil.guessFileName(url, contentDisposition,
                    mimeType));
            request.allowScanningByMediaScanner();
            request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
            request.setDestinationInExternalPublicDir(
                    Environment.DIRECTORY_DOWNLOADS, URLUtil.guessFileName(
                            url, contentDisposition, mimeType));
            DownloadManager dm = (DownloadManager) getSystemService(DOWNLOAD_SERVICE);
            dm.enqueue(request);
            Toast.makeText(getApplicationContext(), "Downloading File",
                    Toast.LENGTH_LONG).show();
        }
    });
    // download manager

但是，我也想处理其他应用程序传递的下载意图.我该怎么办?

However, I'd like to handle that download intents passed by other apps as well. How do i do that?

这是我用来从另一个应用程序打开系统默认应用程序选择器的功能.(我的应用程序在此处列出)-

This is what i use to open the system default app chooser from another app.(my app is listed here)-

   // download via...
    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);
            Toast.makeText(getApplicationContext(), "don't choose our app as it can't handle download intents, i have posted a question on stackoverflow though.",
                    Toast.LENGTH_SHORT).show();
        }
    });
    // download via..

每当我单击下载链接时，我的应用程序即会打开，但会停滞不前而不是打开URL.我希望它像一个下载器应用一样

Whenever i click a download link, my app opens, but just sits still instead of opening the url. I want it to act like a downloader app

推荐答案

您需要在活动中放入以下代码，以响应意图，

You need to put below code in your activity which response the intent,

void onCreate(Bundle savedInstanceState) {
    // Get intent, action and MIME type
    Intent intent = getIntent();
    String action = intent.getAction();
    String type = intent.getType();

    if (Intent.ACTION_VIEW.equals(action))
    {
        */if (type.startsWith("image/"))
          {*/
            downloadImage(intent); // Download image being sent
        }
    }

void downloadImage(Intent intent) {
    Uri imageUri = (Uri) intent.getParcelableExtra(Intent.EXTRA_STREAM);
    if (imageUri != null) {
        // Write Your Download Code Here
    }
}

这篇关于处理我的应用程序中的下载意图的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！