By

文章目录
  1. 1. 数据类
  2. 2. 工具类
  3. 3. layout

数据类

  • Bimp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
public class Bimp {
    public static int max = 0;
    public static boolean act_bool = true;
    public static List<Bitmap> bmp = new ArrayList<Bitmap>();
    // 图片的存放地址
    public static List<String> drr = new ArrayList<String>();
    // 用于压缩图片
    public static Bitmap revitionImageSize(String path)throws IOException {
        BufferedInputStream in = new BufferedInputStream(new FileInputStream(
                new File(path)));
        BitmapFactory.Options options = new BitmapFactory.Options();
        options.inJustDecodeBounds = true;
        BitmapFactory.decodeStream(in, null, options);
        in.close();
        int i = 0;
        Bitmap bitmap = null;
        while (true) {
            if ((options.outWidth >> i <= 1000)
                    && (options.outHeight >> i <= 1000)) {
                in = new BufferedInputStream(
                        new FileInputStream(new File(path)));
                options.inSampleSize = (int) Math.pow(2.0D, i);
                options.inJustDecodeBounds = false;
                bitmap = BitmapFactory.decodeStream(in, null, options);
                break;
            }
            i++;
        }
        return bitmap;
    }
}

工具类

  • BitmapCache类
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
public class BitmapCache {
    public final String TAG = getClass().getSimpleName();
    public Handle h = new Handle();
    private HashMap<String,SoftReference<Bitmap>> imageCache = new HashMap<String,SoftReference<Bitmap>>();
    public void put(String path,Bitmap bmp) {
        if(!TextUtils.isEmpty(path) && bmp != null) {
            imageCache.put(path, new SoftReference<Bitmap>(bmp));
        }
    }
    public void displayBmp(final ImageView iv, final String thumbPath, final String sourcePath, final ImageCallback call ballback) {
        if (TextUtils.isEmpty(thumbPath) && TextUtils.isEmpty(sourcePath)) {
            Log.e(TAG, "no paths pass in");
            return;
        }
        final String path;
        final boolean isThumbPath;
        if (!TextUtils.isEmpty(thumbPath)) {
            path = thumbPath;
            isThumbPath = true;
        }else if (!TextUtils.isEmpty(sourcePath)) {
            path = sourcePath;
            isThumbPath = false;
        }else {
            return;
        }
        // 缓存中是否有该图片
        if(imageCache.containsKey(path)){
            SoftReference<Bitmap> reference = imageCache.get(path);
            if (bmp != null) {
                if (callback != null) {
                    callback.imageLoad(iv, bmp ,sourcePath);
                }
                iv.setImageBitmap(bmp);
                Log.d(TAG,"hit cache");
                return;
            }
        }
        iv.setImageBitmap(null);
        new Thread() {
            Bitmap thumb;
            public void run(){
                try {
                    if (isThumbPath) {
                        thumb = BitmapFactory.decodeFile(thumbPath);
                        if (thumb == null) {
                            thumb = revitionImageSize(sourcePath);
                        } else {
                            thumb = revitionImageSize(thumbPath);
                        }
                    } catch (Exception e){
                        
                    }
                    if (thumb == null) {
                        thumb = revitionImageSize(sourcePath);
                    }
                    put(path,thumb);
                    if(callback != null){
                        h.post(new Runnable(){
                            @Override
                            public void run() {
                            callback.imageLoad(iv, thumb, sourcePath);
                        }
                    });
                }
            }
        }.strat();
    }

    public Bitmap revitionImageSize(String path) throws IOException {
        BufferedInputStream in = new BufferedInputStream(new FileInputStream(
                new File(path)));
        BitmapFactory.Options options = new BitmapFactory.Options();
        options.inJustDecodeBounds = true;
        BitmapFactory.decodeStream(in, null, options);
        in.close();
        int i = 0;
        Bitmap bitmap = null;
        while (true) {
            if ((options.outWidth >> i <= 256)
                    && (options.outHeight >> i <= 256)) {
                in = new BufferedInputStream(
                        new FileInputStream(new File(path)));
                options.inSampleSize = (int) Math.pow(2.0D, i);
                options.inJustDecodeBounds = false;
                bitmap = BitmapFactory.decodeStream(in, null, options);
                break;
            }
            i += 1;
        }
        return bitmap;
    }

    public interface ImageCallback {
        public void imageLoad(ImageView imageView, Bitmap bitmap,
                Object... params);
    }
}
  • AlbumHelper
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
public class AlbumHelper {
    private final String TAG = getClass().getSimpleName();
    private Context context;
    private ContentResolver cr;

    // 缩略图列表
    public HashMap<String, String> thumbnailList = new HashMap<String, String>();
    // 专辑列表
    private List<HashMap<String, String>> albumList = new ArrayList<HashMap<String, String>>();
    private HashMap<String, ImageBucket> bucketList = new HashMap<String, ImageBucket>();

    private static AlbumHelper instance;

    private AlbumHelper() {
    }

    public static AlbumHelper getHelper() {
        if (instance == null) {
            instance = new AlbumHelper();
        }
        return instance;
    }

    /**
     * 初始化
     * 
     * @param context
     */
    public void init(Context context) {
        if (this.context == null) {
            this.context = context;
            cr = context.getContentResolver();
        }
    }

    /**
     * 得到缩略图
     */
    private void getThumbnail() {
        String[] projection = { Thumbnails._ID, Thumbnails.IMAGE_ID,
                Thumbnails.DATA };
        Cursor cursor = cr.query(Thumbnails.EXTERNAL_CONTENT_URI, projection,
                null, null, null);
        getThumbnailColumnData(cursor);
    }

    /**
     * 从数据库中得到缩略图
     * 
     * @param cur
     */
    private void getThumbnailColumnData(Cursor cur) {
        if (cur.moveToFirst()) {
            int _id;
            int image_id;
            String image_path;
            int _idColumn = cur.getColumnIndex(Thumbnails._ID);
            int image_idColumn = cur.getColumnIndex(Thumbnails.IMAGE_ID);
            int dataColumn = cur.getColumnIndex(Thumbnails.DATA);

            do {
                _id = cur.getInt(_idColumn);
                image_id = cur.getInt(image_idColumn);
                image_path = cur.getString(dataColumn);
                thumbnailList.put("" + image_id, image_path);
            } while (cur.moveToNext());
        }
    }

    /**
     * 得到原图
     */
    private void getAlbum() {
        String[] projection = { Albums._ID, Albums.ALBUM, Albums.ALBUM_ART,
                Albums.ALBUM_KEY, Albums.ARTIST, Albums.NUMBER_OF_SONGS };
        Cursor cursor = cr.query(Albums.EXTERNAL_CONTENT_URI, projection, null,
                null, null);
        getAlbumColumnData(cursor);

    }

    /**
     * 从本地数据库中得到原图
     * 
     * @param cur
     */
    private void getAlbumColumnData(Cursor cur) {
        if (cur.moveToFirst()) {
            int _id;
            String album;
            String albumArt;
            String albumKey;
            String artist;
            int numOfSongs;

            int _idColumn = cur.getColumnIndex(Albums._ID);
            int albumColumn = cur.getColumnIndex(Albums.ALBUM);
            int albumArtColumn = cur.getColumnIndex(Albums.ALBUM_ART);
            int albumKeyColumn = cur.getColumnIndex(Albums.ALBUM_KEY);
            int artistColumn = cur.getColumnIndex(Albums.ARTIST);
            int numOfSongsColumn = cur.getColumnIndex(Albums.NUMBER_OF_SONGS);

            do {
                _id = cur.getInt(_idColumn);
                album = cur.getString(albumColumn);
                albumArt = cur.getString(albumArtColumn);
                albumKey = cur.getString(albumKeyColumn);
                artist = cur.getString(artistColumn);
                numOfSongs = cur.getInt(numOfSongsColumn);

                Log.i(TAG, _id + " album:" + album + " albumArt:" + albumArt
                        + "albumKey: " + albumKey + " artist: " + artist
                        + " numOfSongs: " + numOfSongs + "---");
                HashMap<String, String> hash = new HashMap<String, String>();
                hash.put("_id", _id + "");
                hash.put("album", album);
                hash.put("albumArt", albumArt);
                hash.put("albumKey", albumKey);
                hash.put("artist", artist);
                hash.put("numOfSongs", numOfSongs + "");
                albumList.add(hash);
            } while (cur.moveToNext());
        }
    }

    /**
     * 是否创建了图片集
     */
    private boolean hasBuildImagesBucketList = false;

    /**
     * 得到图片集
     */
    private void buildImagesBucketList() {
        long startTime = System.currentTimeMillis();

        // 构造缩略图索引
        getThumbnail();

        // 构造相册索引
        String columns[] = new String[] { Media._ID, Media.BUCKET_ID,
                Media.PICASA_ID, Media.DATA, Media.DISPLAY_NAME, Media.TITLE,
                Media.SIZE, Media.BUCKET_DISPLAY_NAME };
        // 得到一个游标
        Cursor cur = cr.query(Media.EXTERNAL_CONTENT_URI, columns, null, null,
                null);
        if (cur.moveToFirst()) {
            // 获取指定列的索引
            int photoIDIndex = cur.getColumnIndexOrThrow(Media._ID);
            int photoPathIndex = cur.getColumnIndexOrThrow(Media.DATA);
            int photoNameIndex = cur.getColumnIndexOrThrow(Media.DISPLAY_NAME);
            int photoTitleIndex = cur.getColumnIndexOrThrow(Media.TITLE);
            int photoSizeIndex = cur.getColumnIndexOrThrow(Media.SIZE);
            int bucketDisplayNameIndex = cur
                    .getColumnIndexOrThrow(Media.BUCKET_DISPLAY_NAME);
            int bucketIdIndex = cur.getColumnIndexOrThrow(Media.BUCKET_ID);
            int picasaIdIndex = cur.getColumnIndexOrThrow(Media.PICASA_ID);
            // 获取图片总数
            int totalNum = cur.getCount();

            do {
                String _id = cur.getString(photoIDIndex);
                String name = cur.getString(photoNameIndex);
                String path = cur.getString(photoPathIndex);
                String title = cur.getString(photoTitleIndex);
                String size = cur.getString(photoSizeIndex);
                String bucketName = cur.getString(bucketDisplayNameIndex);
                String bucketId = cur.getString(bucketIdIndex);
                String picasaId = cur.getString(picasaIdIndex);

                Log.i(TAG, _id + ", bucketId: " + bucketId + ", picasaId: "
                        + picasaId + " name:" + name + " path:" + path
                        + " title: " + title + " size: " + size + " bucket: "
                        + bucketName + "---");

                ImageBucket bucket = bucketList.get(bucketId);
                if (bucket == null) {
                    bucket = new ImageBucket();
                    bucketList.put(bucketId, bucket);
                    bucket.imageList = new ArrayList<ImageItem>();
                    bucket.bucketName = bucketName;
                }
                bucket.count++;
                ImageItem imageItem = new ImageItem();
                imageItem.imageId = _id;
                imageItem.imagePath = path;
                imageItem.thumbnailPath = thumbnailList.get(_id);
                bucket.imageList.add(imageItem);

            } while (cur.moveToNext());
        }
        // Interator为迭代器，Entry为Map接口
        // 遍历所有图片
        Iterator<Entry<String, ImageBucket>> itr = bucketList.entrySet()
                .iterator();
        while (itr.hasNext()) {
            Map.Entry<String, ImageBucket> entry = (Map.Entry<String, ImageBucket>) itr
                    .next();
            ImageBucket bucket = entry.getValue();
            Log.d(TAG, entry.getKey() + ", " + bucket.bucketName + ", "
                    + bucket.count + " ---------- ");
            for (int i = 0; i < bucket.imageList.size(); ++i) {
                ImageItem image = bucket.imageList.get(i);
                Log.d(TAG, "----- " + image.imageId + ", " + image.imagePath
                        + ", " + image.thumbnailPath);
            }
        }
        hasBuildImagesBucketList = true;
        long endTime = System.currentTimeMillis();
        Log.d(TAG, "use time: " + (endTime - startTime) + " ms");
    }

    /**
     * 得到图片集
     * 
     * @param refresh
     * @return
     */
    public List<ImageBucket> getImagesBucketList(boolean refresh) {
        if (refresh || (!refresh && !hasBuildImagesBucketList)) {
            buildImagesBucketList();
        }
        List<ImageBucket> tmpList = new ArrayList<ImageBucket>();
        Iterator<Entry<String, ImageBucket>> itr = bucketList.entrySet()
                .iterator();
        while (itr.hasNext()) {
            Map.Entry<String, ImageBucket> entry = (Map.Entry<String, ImageBucket>) itr
                    .next();
            tmpList.add(entry.getValue());
        }
        return tmpList;
    }

    /**
     * 根据图片的_ID得到原始图像路径
     * 
     * @param image_id
     * @return
     */
    public String getOriginalImagePath(String image_id) {
        String path = null;
        Log.i(TAG, "---(^o^)----" + image_id);
        String[] projection = { Media._ID, Media.DATA };
        Cursor cursor = cr.query(Media.EXTERNAL_CONTENT_URI, projection,
                Media._ID + "=" + image_id, null, null);
        if (cursor != null) {
            cursor.moveToFirst();
            path = cursor.getString(cursor.getColumnIndex(Media.DATA));
        }
        return path;
    }
}

layout

相册选取layout

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="# f1eff5"
    android:orientation="vertical" >
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="60dp"
        android:background="# ff495a" >
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerInParent="true"
            android:text="相册"
            android:textColor="# ffffff"
            android:textSize="20sp" />
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="40dp"
            android:gravity="center"
            android:layout_alignParentRight="true"
            android:layout_centerVertical="true"
            android:layout_marginRight="8dp"         
            android:textColor="@drawable/text_while"
            android:text="取消"
            android:textSize="20sp" />
    </RelativeLayout>
    <GridView
        android:id="@+id/gridview"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_margin="10dp"
        android:horizontalSpacing="20dp"
        android:numColumns="2"
        android:scrollbars="none"
        android:verticalSpacing="20dp" >
    </GridView>
</LinearLayout>
  • 图片选取layout
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="# f1eff5"
    android:orientation="vertical" >
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="60dp"
        android:background="# ff495a" >
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerInParent="true"
            android:text="相册"
            android:textColor="# ffffff"
            android:textSize="20sp" />
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="40dp"
            android:gravity="center"
            android:layout_alignParentRight="true"
            android:layout_centerVertical="true"
            android:layout_marginRight="8dp"         
            android:textColor="@drawable/text_while"
            android:text="取消"
            android:textSize="20sp" />
    </RelativeLayout>
    <GridView
        android:id="@+id/gridview"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_margin="10dp"
        android:horizontalSpacing="20dp"
        android:numColumns="2"
        android:scrollbars="none"
        android:verticalSpacing="20dp" >
    </GridView>
</LinearLayout>
  • 图片预览layout
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >
    <android.support.v4.view.ViewPager
        android:id="@+id/viewpager"
        android:layout_width="match_parent"
        android:layout_height="match_parent" >
    </android.support.v4.view.ViewPager>
    <RelativeLayout
        android:id="@+id/photo_relativeLayout"
        android:layout_width="match_parent"
        android:layout_height="60dp"
        android:layout_alignParentBottom="true" > 
        <Button
            android:id="@+id/photo_bt_exit"  
            android:layout_width="50dp"
            android:layout_height="50dp"
            android:layout_alignParentLeft="true"
            android:layout_centerVertical="true"
            android:background="@drawable/bt_quxiao" />
        <Button
            android:id="@+id/photo_bt_del"
            android:layout_width="50dp"
            android:layout_height="50dp"
            android:layout_centerInParent="true"
            android:background="@drawable/bt_shanchu" />
        <Button
            android:id="@+id/photo_bt_enter"
            android:layout_width="50dp"
            android:layout_height="50dp"
            android:layout_alignParentRight="true"
            android:layout_centerVertical="true"
            android:background="@drawable/bt_queding" />
    </RelativeLayout>
</RelativeLayout>
文章目录
  1. 1. 数据类
  2. 2. 工具类
  3. 3. layout