一站式解决,Android 拍照 图库的各种问题.
时间：2014-05-14 10:28:42
收藏：0
阅读：538
在android开发中, 在一些编辑个人信息的时候,经常会有头像这么一个东西,就两个方面,调用系统相机拍照,调用系统图库获取图片.但是往往会遇到各种问题:
1.oom
2.图片方向不对
3.activity result 的时候data == null
4.调用图库的时候没找到软件
嘿嘿..开代码:
首先是调用系统拍照,和图库的代码
|
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 |
package
com.chzh.fitter.util;import java.io.File;import android.app.Activity;import android.content.Context;import android.content.Intent;import android.database.Cursor;import
android.net.Uri;import
android.provider.MediaStore;import
android.widget.Toast;//在onActivityResult方法中根据requestCode和resultCode来获取当前拍照的图片地址。//注意：这里有个问题，在有些机型当中（如SamsungI939、note2等）遇见了当拍照并存储之后，intent当中得到的data为空：/** * data = null 的情况主要是由于拍照的时候横屏了,导致重新create, 普通的解决方法可以在sharedpreference里面保存拍照文件的路径(onSaveInstance保存), * 在onRestoreSaveInstance里面在获取出来. * 最简单的可以用fileUtil 里面的一个静态变量保存起来.. * */public
class CameraUtil { private
static final String IMAGE_TYPE = "image/*"; private
Context mContext; public
CameraUtil(Context context) { mContext = context; } /** * 打开照相机 * @param activity 当前的activity * @param requestCode 拍照成功时activity forResult 的时候的requestCode * @param photoFile 拍照完毕时,图片保存的位置 */ public
void openCamera(Activity activity, int
requestCode, File photoFile) { Intent intent = new
Intent(MediaStore.ACTION_IMAGE_CAPTURE); intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(photoFile)); activity.startActivityForResult(intent, requestCode); } /** * 本地照片调用 * @param activity * @param requestCode */ public
void openPhotos(Activity activity, int
requestCode) { if
(openPhotosNormal(activity, requestCode) && openPhotosBrowser(activity, requestCode) && openPhotosFinally()); } /** * PopupMenu打开本地相册. */ private
boolean openPhotosNormal(Activity activity, int
actResultCode) { Intent intent = new
Intent(Intent.ACTION_PICK, null); intent.setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, IMAGE_TYPE); try
{ activity.startActivityForResult(intent, actResultCode); } catch
(android.content.ActivityNotFoundException e) { return
true; } return
false; } /** * 打开其他的一文件浏览器,如果没有本地相册的话 */ private
boolean openPhotosBrowser(Activity activity, int
requestCode) { Toast.makeText(mContext, "没有相册软件，运行文件浏览器", Toast.LENGTH_LONG).show(); Intent intent = new
Intent(Intent.ACTION_GET_CONTENT); // "android.intent.action.GET_CONTENT" intent.setType(IMAGE_TYPE); // 查看类型 String IMAGE_UNSPECIFIED = // "image/*"; Intent wrapperIntent = Intent.createChooser(intent, null); try
{ activity.startActivityForResult(wrapperIntent, requestCode); } catch
(android.content.ActivityNotFoundException e1) { return
true; } return
false; } /** * 这个是找不到相关的图片浏览器,或者相册 */ private
boolean openPhotosFinally() { Toast.makeText(mContext, "您的系统没有文件浏览器或则相册支持,请安装！", Toast.LENGTH_LONG).show(); return
false; } /** * 获取从本地图库返回来的时候的URI解析出来的文件路径 * @return */ public
static String getPhotoPathByLocalUri(Context context, Intent data) { Uri selectedImage = data.getData(); String[] filePathColumn = { MediaStore.Images.Media.DATA }; Cursor cursor = context.getContentResolver().query(selectedImage, filePathColumn, null, null, null); cursor.moveToFirst(); int
columnIndex = cursor.getColumnIndex(filePathColumn[0]); String picturePath = cursor.getString(columnIndex); cursor.close(); return
picturePath; }} |
接下来是解决oom的
|
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 |
package
com.chzh.fitter.util;import java.io.FileDescriptor;import java.io.FileInputStream;import java.io.IOException;import android.graphics.Bitmap;import android.graphics.Bitmap.Config;import android.graphics.BitmapFactory;import
android.graphics.BitmapFactory.Options;import
android.graphics.Canvas;import
android.graphics.Matrix;import
android.graphics.Paint;import
android.graphics.PorterDuff.Mode;import
android.graphics.PorterDuffXfermode;import
android.graphics.Rect;import
android.graphics.RectF;import
android.media.ExifInterface;import
android.net.Uri;import
android.util.Log;import
android.widget.ImageView;import
com.androidquery.util.AQUtility;/** * @author jarrahwu * */public
class ImageUtil { /** * Utility method for downsampling images. * * @param path * the file path * @param data * if file path is null, provide the image data directly * @param target * the target dimension * @param isWidth * use width as target, otherwise use the higher value of height * or width * @param round * corner radius * @return the resized image */ public
static Bitmap getResizedImage(String path, byte[] data, int
target, boolean
isWidth, int
round) { Options options = null; if
(target > 0) { Options info = new
Options(); info.inJustDecodeBounds = true; //设置这两个属性可以减少内存损耗 info.inInputShareable = true; info.inPurgeable = true; decode(path, data, info); int
dim = info.outWidth; if
(!isWidth) dim = Math.max(dim, info.outHeight); int
ssize = sampleSize(dim, target); options = new
Options(); options.inSampleSize = ssize; } Bitmap bm = null; try
{ bm = decode(path, data, options); } catch
(OutOfMemoryError e) { L.red(e.toString()); e.printStackTrace(); } if
(round > 0) { bm = getRoundedCornerBitmap(bm, round); } return
bm; } private
static Bitmap decode(String path, byte[] data, BitmapFactory.Options options) { Bitmap result = null; if
(path != null) { result = decodeFile(path, options); } else
if (data != null) { // AQUtility.debug("decoding byte[]"); result = BitmapFactory.decodeByteArray(data, 0, data.length, options); } if
(result == null
&& options != null
&& !options.inJustDecodeBounds) { AQUtility.debug("decode image failed", path); } return
result; } private
static Bitmap decodeFile(String path, BitmapFactory.Options options) { Bitmap result = null; if
(options == null) { options = new
Options(); } options.inInputShareable = true; options.inPurgeable = true; FileInputStream fis = null; try
{ fis = new
FileInputStream(path); FileDescriptor fd = fis.getFD(); // AQUtility.debug("decoding file"); // AQUtility.time("decode file"); result = BitmapFactory.decodeFileDescriptor(fd, null, options); // AQUtility.timeEnd("decode file", 0); } catch
(IOException e) { AQUtility.report(e); } finally
{ AQUtility.close(fis); } return
result; } private
static int sampleSize(int
width, int
target) { int
result = 1; for
(int i = 0; i < 10; i++) { if
(width < target * 2) { break; } width = width / 2; result = result * 2; } return
result; } /** * 获取圆角的bitmap * @param bitmap * @param pixels * @return */ private
static Bitmap getRoundedCornerBitmap(Bitmap bitmap, int
pixels) { Bitmap output = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Config.ARGB_8888); Canvas canvas = new
Canvas(output); final
int color = 0xff424242; final
Paint paint = new
Paint(); final
Rect rect = new
Rect(0, 0, bitmap.getWidth(), bitmap.getHeight()); final
RectF rectF = new
RectF(rect); final
float roundPx = pixels; paint.setAntiAlias(true); canvas.drawARGB(0, 0, 0, 0); paint.setColor(color); canvas.drawRoundRect(rectF, roundPx, roundPx, paint); paint.setXfermode(new
PorterDuffXfermode(Mode.SRC_IN)); canvas.drawBitmap(bitmap, rect, rect, paint); return
output; } /** * auto fix the imageOrientation * @param bm source * @param iv imageView if set invloke it‘s setImageBitmap() otherwise do nothing * @param uri image Uri if null user path * @param path image path if null use uri */ public
static Bitmap autoFixOrientation(Bitmap bm, ImageView iv, Uri uri,String path) { int
deg = 0; try
{ ExifInterface exif = null; if
(uri == null) { exif = new
ExifInterface(path); } else
if (path == null) { exif = new
ExifInterface(uri.getPath()); } if
(exif == null) { L.red("exif is null check your uri or path"); return
bm; } String rotate = exif.getAttribute(ExifInterface.TAG_ORIENTATION); int
rotateValue = Integer.parseInt(rotate); System.out.println("orientetion : "
+ rotateValue); switch
(rotateValue) { case
ExifInterface.ORIENTATION_ROTATE_90: deg = 90; break; case
ExifInterface.ORIENTATION_ROTATE_180: deg = 180; break; case
ExifInterface.ORIENTATION_ROTATE_270: deg = 270; break; default: deg = 0; break; } } catch
(Exception ee) { Log.d("catch img error", "return"); if(iv != null) iv.setImageBitmap(bm); return
bm; } Matrix m = new
Matrix(); m.preRotate(deg); bm = Bitmap.createBitmap(bm, 0, 0, bm.getWidth(), bm.getHeight(), m, true); //bm = Compress(bm, 75); if(iv != null) iv.setImageBitmap(bm); return
bm; }} |
这两个东西,是解决这些问题的利器.
如果想要代码Demo的话,可以留言.有什么坑爹的地方,多多拍砖..over.
评论（0）