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Enrique Espinosa
Asked: 2020-03-07 10:26:55 +0800 CST 2020-03-07 10:26:55 +0800 CST

How can I clean a text string that I receive from a web service?

  • 772

I have a problem when I recover a text string, it recovers fine but it has some HTML tags and characters that I don't want to show, for example, from the following text I only want to recover the link that is between the href, but I don't know how I can extract that fragment or how remove everything I don't need, I don't know if it is possible for android to interpret the HTML tags.

This is an example of how it returns the text strings, I just want to keep the link:

 <div><a
 href=\"https://sitioWeb.org.mx/wp-content/uploads/2018/06/documento.pdf\"
 class=\"pdfemb-viewer\" style=\"\" data-width=\"max\"
android

2 Answers

  1. Best Answer

    You can use this method which applies to get the value of any html tag:

    private String getUrlFromString(String htmlText, String tag){

    int pos = htmlText.toLowerCase().indexOf(tag) + tag.length() +1;
    String cut1 = htmlText.substring(pos, htmlText.length());

    int pos2 = cut1.indexOf("\"");
    return cut1.substring(0,pos2);

}

    In this case, according to the information you provide, if you want to obtain the value of the url defined in the tag href, you would do it this way:

    String valorUrl = getUrlFromString(a, "href=");
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  2. In the name of the site I see that you are working with Java, if this is the case you can use the replaceAll method, to eliminate all the \ it should be noted that these are added to be able to escape the double quotes.

    String ejemplo ="<a href=\"https://sitioWeb.org.mx/wp-content/uploads/2018/06/documento.pdf\" class=\"pdfemb-viewer\" style=\"\" data-width=\"max\"";
String replaceString=ejemplo.replace("\\","");//replaces all occurrences of "is" to "was"  
System.out.println(replaceString);

    result

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