android - How to show a "Clear button" after the first character pressed and hide it when the text is ""? -

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i need show clear button @ right of edit text , hide when text is"". how can that.

i need know how show , hide when text length>0 or =0, nothing more.

try code

field1.addtextchangedlistener(new textwatcher() {       @override       public void aftertextchanged(editable s) {}       @override            public void beforetextchanged(charsequence s, int start,        int count, int after) {       }      @override         public void ontextchanged(charsequence s, int start,        int before, int count) {        if(s.length() != 0)         // set visibility     }      });

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