BitmapRequestKeyImpl.java revision 5030ae34cd5978a8ab8a06f6c3b69b8645873122 
1/*
2 * Copyright (C) 2013 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
17package com.example.bitmapsample;
18
19import com.android.bitmap.RequestKey;
20
21import java.io.IOException;
22import java.io.InputStream;
23import java.net.MalformedURLException;
24import java.net.URL;
25
26public class BitmapRequestKeyImpl implements RequestKey {
27    public final String mUriString;
28    public final URL mUrl;
29
30    private boolean mSlept;
31
32    public BitmapRequestKeyImpl(String uriString) {
33        mUriString = uriString;
34        URL url = null;
35        try {
36            url = new URL(uriString);
37        } catch (MalformedURLException e) {
38            e.printStackTrace();
39        }
40        mUrl = url;
41        mSlept = false;
42    }
43
44    @Override
45    public boolean equals(Object o) {
46        if (o == null || !(o instanceof BitmapRequestKeyImpl)) {
47            return false;
48        }
49        final BitmapRequestKeyImpl other = (BitmapRequestKeyImpl) o;
50        return mUriString.equals(other.mUriString);
51    }
52
53    @Override
54    public int hashCode() {
55        int hash = 17;
56        hash += 31 * hash + mUriString.hashCode();
57        return hash;
58    }
59
60    @Override
61    public String toString() {
62        final StringBuilder sb = new StringBuilder("[");
63        sb.append(mUriString);
64        sb.append("]");
65        return sb.toString();
66    }
67
68    @Override
69    public Cancelable createFileDescriptorFactoryAsync(final RequestKey key,
70            final Callback callback) {
71        return null;
72    }
73
74    @Override
75    public InputStream createInputStream() throws IOException {
76        // Artificially sleep for (deterministically) random amount of time.
77        if (!mSlept) {
78            // Character difference between shortest and longest uri.
79            final long spread = 26;
80            // Maximum amount of time to sleep.
81            final long max = 3;
82            final long duration = (long) ((float) (mUriString.length() % spread) / spread * max
83                    * 1000);
84            try {
85                Thread.sleep(duration);
86            } catch (InterruptedException ignored) {
87            }
88            mSlept = true;
89        }
90        return mUrl.openStream();
91    }
92
93    @Override
94    public boolean hasOrientationExif() throws IOException {
95        return false;
96    }
97
98}