1 /*
2  * Copyright (C) 2006 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 android.text.style;
18 
19 import android.annotation.NonNull;
20 import android.content.ActivityNotFoundException;
21 import android.content.Context;
22 import android.content.Intent;
23 import android.net.Uri;
24 import android.os.Parcel;
25 import android.provider.Browser;
26 import android.text.ParcelableSpan;
27 import android.text.TextUtils;
28 import android.util.Log;
29 import android.view.View;
30 
31 /**
32  * Implementation of the {@link ClickableSpan} that allows setting a url string. When
33  * selecting and clicking on the text to which the span is attached, the <code>URLSpan</code>
34  * will try to open the url, by launching an an Activity with an {@link Intent#ACTION_VIEW} intent.
35  * <p>
36  * For example, a <code>URLSpan</code> can be used like this:
37  * <pre>
38  * SpannableString string = new SpannableString("Text with a url span");
39  * string.setSpan(new URLSpan("http://www.developer.android.com"), 12, 15, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
40  * </pre>
41  * <img src="{@docRoot}reference/android/images/text/style/urlspan.png" />
42  * <figcaption>Text with <code>URLSpan</code>.</figcaption>
43  */
44 public class URLSpan extends ClickableSpan implements ParcelableSpan {
45 
46     private final String mURL;
47 
48     /**
49      * Constructs a {@link URLSpan} from a url string.
50      *
51      * @param url the url string
52      */
URLSpan(String url)53     public URLSpan(String url) {
54         mURL = url;
55     }
56 
57     /**
58      * Constructs a {@link URLSpan} from a parcel.
59      */
URLSpan(@onNull Parcel src)60     public URLSpan(@NonNull Parcel src) {
61         mURL = src.readString();
62     }
63 
64     @Override
getSpanTypeId()65     public int getSpanTypeId() {
66         return getSpanTypeIdInternal();
67     }
68 
69     /** @hide */
70     @Override
getSpanTypeIdInternal()71     public int getSpanTypeIdInternal() {
72         return TextUtils.URL_SPAN;
73     }
74 
75     @Override
describeContents()76     public int describeContents() {
77         return 0;
78     }
79 
80     @Override
writeToParcel(@onNull Parcel dest, int flags)81     public void writeToParcel(@NonNull Parcel dest, int flags) {
82         writeToParcelInternal(dest, flags);
83     }
84 
85     /** @hide */
86     @Override
writeToParcelInternal(@onNull Parcel dest, int flags)87     public void writeToParcelInternal(@NonNull Parcel dest, int flags) {
88         dest.writeString(mURL);
89     }
90 
91     /**
92      * Get the url string for this span.
93      *
94      * @return the url string.
95      */
getURL()96     public String getURL() {
97         return mURL;
98     }
99 
100     @Override
onClick(View widget)101     public void onClick(View widget) {
102         Uri uri = Uri.parse(getURL());
103         Context context = widget.getContext();
104         Intent intent = new Intent(Intent.ACTION_VIEW, uri);
105         intent.putExtra(Browser.EXTRA_APPLICATION_ID, context.getPackageName());
106         try {
107             context.startActivity(intent);
108         } catch (ActivityNotFoundException e) {
109             Log.w("URLSpan", "Actvity was not found for intent, " + intent.toString());
110         }
111     }
112 }
113