Android WebView, Scaling Image to fit the screen

Question

What I have: I\'m loading image from a URL. I simply do (WebView).loadUrl(imageurl, extraheaders)

What I get: Image i

Answer 1

What worked for me was this: I read that in order to fit the width of the screen you should add this to your HTML or xml inside the field:

width="100%"

So what I did was, instead of scaling and zooming the images, I got the xml, put it in a StringBuilder, found the src="https://blablabla.com/image.png" that is inside the field and just before the "src" substring I inserted the "width="100%"", then y set my webView with the StringBuilder, mi code is this:

public void setWebViewWithImageFit(String content){

        // content is the content of the HTML or XML.
        String stringToAdd = "width=\"100%\" ";

        // Create a StringBuilder to insert string in the middle of content.
        StringBuilder sb = new StringBuilder(content);

        int i = 0;
        int cont = 0;

        // Check for the "src" substring, if it exists, take the index where 
        // it appears and insert the stringToAdd there, then increment a counter
        // because the string gets altered and you should sum the length of the inserted substring
        while(i != -1){
            i = content.indexOf("src", i + 1);
            if(i != -1) sb.insert(i + (cont * stringToAdd.length()), stringToAdd );
            ++cont;
        }

        // Set the webView with the StringBuilder: sb.toString()
        WebView detailWebView = (WebView) findViewById(R.id.web_view);
        detailWebView.loadDataWithBaseURL(null, sb.toString(), "text/html", "utf-8", null);
}

Hope this helps, it took me some hours to figure out how to solve this.