Fit image in webview

Question

I am planning to display images from SD card in a webview in order to take advantage of he built in zoom capabilities of webview. However, I am facing an issue with displaying images that are bigger than screen size (e.g. 1800x1200) to fit the screen initially, like in an ImageView. I want the image to be displayed in full at first and provide zoom control to the users. I have tried using WRAP_CONTENT for webview's width and height, but that does not work. Any ideas? Following is a code snippet I am using:

    String path = getRealPathFromURI(mUriList.get(0)); // this gets the file path
    webView = (WebView) findViewById(R.id.WebView01);
 WebSettings settings= webView.getSettings();
 settings.setBuiltInZoomControls(true);
 settings.setSupportZoom(true);     
 webView.loadUrl("file://" + path);

Answer 1

 private WebView mWebView2;
    mWebView2 = (WebView)findViewById(R.id.webview);
    mWebView2.getSettings().setJavaScriptEnabled(true);
    mWebView2.getSettings().setLoadWithOverviewMode(true);
    mWebView2.getSettings().setUseWideViewPort(true);
    mWebView2.setScrollBarStyle(WebView.SCROLLBARS_OUTSIDE_OVERLAY);
    mWebView2.setScrollbarFadingEnabled(true);
    mWebView2.loadDataWithBaseURL("file:///android_asset/", "<img src=\"banner5.png\" height=\"98%\" width=\"100%\"/>", "text/html", "utf-8", null);

Images are in the assets folder

Answer 2

If you write your HTML correctly, you don't have to do any "setLoadWithOverviewMode", "setUseWideViewPort" or "setInitialScale". And there is absolutely no reason to enable JavaScript.

This one line worked for me:

webView.loadDataWithBaseURL("file://" + directory, "<img src=\"" + name + "\" width=\"100%\"/>", "text/html", "utf-8", null);

The underlining HTML code is:

<img src=YourImage.png width="100%" />, by not setting a height, its aspect ratio will be kept.

Answer 3

That did the trick for me:

webView.setInitialScale(30);
WebSettings webSettings = webView.getSettings();
webSettings.setUseWideViewPort(true);