klickbarer HTML Link im Textview (clickable html link in textview)

package com.example.bmiapp; 
import java.util.regex.Pattern; 


import android.app.Activity; 
import android.os.Bundle; 
import android.text.util.Linkify; 
import android.view.View; 
import android.widget.EditText;import android.widget.TextView; 
public class Main extends Activity { 








@Overrideprotected void onCreate(Bundle savedInstanceState) { 
super.onCreate(savedInstanceState);setContentView(R.layout.activity_main); 
} 


public void calculateClickHandler(View view) { 
// make sure we handle the click of the calculator button 
if (view.getId() == R.id.btn_ergebnis) { 


// get the references to the widgetsEditText weightText = (EditText)findViewById(R.id.gewicht); 
EditText heightText = (EditText)findViewById(R.id.groesse); 
TextView resultText = (TextView)findViewById(R.id.bmi); 


// get the users values from the widget references 
float weight = Float.parseFloat(weightText.getText().toString());float height = Float.parseFloat(heightText.getText().toString()); 


// calculate the bmi value 
float bmiValue = calculateBMI(weight, height); 


// interpret the meaning of the bmi value 
String bmiInterpretation = interpretBMI(bmiValue); 


// now set the value in the result text 
resultText.setText( bmiValue + "-" + bmiInterpretation); 
} 
} 


// the formula to calculate the BMI index 


// check for http://en.wikipedia.org/wiki/Body_mass_indexprivate float calculateBMI (float weight, float height) { 
return (int) (weight/(height*height)); 


} 




// interpret what BMI meansprivate String interpretBMI(double bmiValue) { 
if (bmiValue < 16) { 
return "Severely underweight";} else if (bmiValue < 18.5) { 
return "Untergewicht";} else if (bmiValue < 25) { 


return "Normales Gewicht";} else if (bmiValue < 30) { 
return "Übergewichtig"; 
} else {return "Obese"; 
} 


} 


//HTML-Link im Textview, nach Klick soll zur Homepage gesprungen werden! 
public class Html { 
public TextView padding_medium; 
private final TextView HTMLTextview = null; 


{ 
setContentView(R.layout.activity_main); 
TextView HTMLTextview = (TextView) findViewById(R.id.HTMLTextview); 
String text = "Besuchen Sie uns: .de - Wir helfen weiter!"; 


HTMLTextview.setText(text); 


// Jetzt einen Link erstellen:Pattern pattern = Pattern.compile("gmx.de"); 


// http:// voranstellen:Linkify.addLinks(HTMLTextview, pattern, "http://"); 
}} 
}

public class Main extends Activity { 


@Override 
protected void onCreate(Bundle savedInstanceState) { 
super.onCreate(savedInstanceState);setContentView(R.layout.activity_main); 


//HTML-Link im Textview, nach Klick soll zur Homepage gesprungen werden! 


TextView HTMLTextview = (TextView) findViewById(R.id.HTMLTextview); 
String text = "http://www.gmx.de"; 
HTMLTextview.setText(Html.fromHtml(text)); 
HTMLTextview.setMovementMethod(LinkMovementMethod.getInstance()); 
}