Question

我正在尝试使用.pdf链接在WebView中加载URL。链接没有出现在JELLY_BEAN设备上[经过4.1,4.1.1和4.1的测试; 4.2] 但是，该链接在所有KITKAT及以上设备上均可见。

以下是代码：

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.directory_browser);
    webView = (ExtendedWebView) findViewById(R.id.webBrowser); 
    webSettings = webView.getSettings();
    progressBar = (ProgressBar) findViewById(R.id.browserProgressBar);
    progressTextView = (TextView) findViewById(R.id.browserProgressText);
    preparewebView();
    webView.loadUrl(getIntent().getStringExtra("medicalUrl"));

}

private void preparewebView() {
    webSettings.setJavaScriptEnabled(true);
    webSettings.setBuiltInZoomControls(true);
    webSettings.setAllowFileAccess(true);
    webSettings.setDomStorageEnabled(true);
    webView.requestFocusFromTouch();
    webView.setInitialScale(getResources().getInteger(R.integer.medical_webview_initialScale));
    webSettings.setBuiltInZoomControls(false);
    webView.setPadding(0, 0, 0, 0);
    webView.getSettings().setTextZoom(100);
    webView.getSettings().setRenderPriority(RenderPriority.HIGH);
    webView.setWebViewClient(new WebViewClient() {
        @Override
        public boolean shouldOverrideUrlLoading(WebView view, String url) {
            return super.shouldOverrideUrlLoading(view, url);
        }
        @Override
        public void onPageStarted(WebView view, String url, Bitmap favicon) {
            //Decide whether to set a download listener
            String prefix = com.theteamie.android.uwc.Webservice.URL.getUwcseaWebappDownloadUrl();
            if (!url.startsWith(prefix)){
                Log.v("WebViewClient", "Appending downloader");
                view.setDownloadListener(new Downloader());
            }
            super.onPageStarted(view, url, favicon);
        }
    });
    webView.setWebChromeClient(new WebChromeClient() {
        public void onProgressChanged(WebView view, int progress) {
            // Activities and WebViews measure progress with different
            // scales.
            // The progress meter will automatically disappear when we
            // reach 100%
            try {
                String progressText = getResources().getString(R.string.loading) + "... ";
                if (progress != 100) {
                    progressBar.setVisibility(ProgressBar.VISIBLE);
                    progressBar.setProgress(progress);
                    progressTextView.setVisibility(TextView.VISIBLE);
                    progressTextView.setText(progressText + Integer.toString(progress));
                } else {
                    progressBar.setVisibility(ProgressBar.GONE);
                    progressTextView.setVisibility(TextView.GONE);
                }
            } catch (IllegalStateException e) {
                Log.e(TAG, Log.getStackTraceString(e));
            }
        }

        @Override
        public void onReceivedTitle(WebView view, String title) {
            super.onReceivedTitle(view, title);
        }
    });
}

任何建议可能是为什么链接在WebView中对这些设备不可见的原因。感谢

Answer 1

尝试这种方式可以帮助您

  webview.getSettings().setJavaScriptEnabled(true); 
  String pdf = "YourLink.pdf";
  webview.loadUrl("http://docs.google.com/gview?embedded=true&url=" + pdf);

Answer 2

尝试这样： -

webview.getSettings().setJavaScriptEnabled(true);
            webview.setWebViewClient(new WebViewClient() {
            public boolean shouldOverrideUrlLoading(WebView view, String url) {
            view.loadUrl(url);
            return true;
                }
            });
              webview.loadUrl(your_url);

PDF链接不会出现在19以下的Android WebView API中

2 个答案: