1 /*
2  * Copyright (C) 2007 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.example.android.apis.text;
18 
19 import com.example.android.apis.R;
20 
21 import android.app.Activity;
22 import android.graphics.Typeface;
23 import android.os.Bundle;
24 import android.text.Html;
25 import android.text.SpannableString;
26 import android.text.Spanned;
27 import android.text.method.LinkMovementMethod;
28 import android.text.style.StyleSpan;
29 import android.text.style.URLSpan;
30 import android.widget.TextView;
31 
32 public class Link extends Activity {
33     @Override
onCreate(Bundle savedInstanceState)34     protected void onCreate(Bundle savedInstanceState) {
35         super.onCreate(savedInstanceState);
36 
37         setContentView(R.layout.link);
38 
39         // text1 shows the android:autoLink property, which
40         // automatically linkifies things like URLs and phone numbers
41         // found in the text.  No java code is needed to make this
42         // work.
43 
44         // text2 has links specified by putting <a> tags in the string
45         // resource.  By default these links will appear but not
46         // respond to user input.  To make them active, you need to
47         // call setMovementMethod() on the TextView object.
48 
49         TextView t2 = (TextView) findViewById(R.id.text2);
50         t2.setMovementMethod(LinkMovementMethod.getInstance());
51 
52         // text3 shows creating text with links from HTML in the Java
53         // code, rather than from a string resource.  Note that for a
54         // fixed string, using a (localizable) resource as shown above
55         // is usually a better way to go; this example is intended to
56         // illustrate how you might display text that came from a
57         // dynamic source (eg, the network).
58 
59         TextView t3 = (TextView) findViewById(R.id.text3);
60         t3.setText(
61             Html.fromHtml(
62                 "<b>text3: Constructed from HTML programmatically.</b>  Text with a " +
63                 "<a href=\"http://www.google.com\">link</a> " +
64                 "created in the Java source code using HTML."));
65         t3.setMovementMethod(LinkMovementMethod.getInstance());
66 
67         // text4 illustrates constructing a styled string containing a
68         // link without using HTML at all.  Again, for a fixed string
69         // you should probably be using a string resource, not a
70         // hardcoded value.
71 
72         SpannableString ss = new SpannableString(
73             "text4: Manually created spans. Click here to dial the phone.");
74 
75         ss.setSpan(new StyleSpan(Typeface.BOLD), 0, 30,
76                    Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
77         ss.setSpan(new URLSpan("tel:4155551212"), 31+6, 31+10,
78                    Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
79 
80         TextView t4 = (TextView) findViewById(R.id.text4);
81         t4.setText(ss);
82         t4.setMovementMethod(LinkMovementMethod.getInstance());
83     }
84 }
85