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Monday, July 5, 2010

Linkify

Linkify take a piece of text and a regular expression and turns all of the regex matches in the text into clickable links. This is particularly useful for matching things like email addresses, web urls, etc. and making them actionable. Alone with the pattern that is to be matched, a url scheme prefix is also required. Any pattern match that does not begin with the supplied scheme will have the scheme prepended to the matched text when the clickable url is created.

Linkify

main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello"
/>
<EditText
android:id="@+id/editfield"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>
</LinearLayout>


AndroidLinkify.java
package com.exercise.AndroidLinkify;

import android.app.Activity;
import android.os.Bundle;
import android.text.util.Linkify;
import android.view.KeyEvent;
import android.view.View;
import android.widget.EditText;

public class AndroidLinkify extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);

final EditText editField = (EditText)findViewById(R.id.editfield);
editField.setOnKeyListener(new EditText.OnKeyListener(){

@Override
public boolean onKey(View v, int keyCode, KeyEvent event) {
// TODO Auto-generated method stub
Linkify.addLinks(editField,
Linkify.EMAIL_ADDRESSES|
Linkify.MAP_ADDRESSES|
Linkify.PHONE_NUMBERS|
Linkify.WEB_URLS);
return false;
}});
}
}


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