Android中图片的处置（放大缩小，去色，转换格式，增加水印等）

多张图片四个方位的图片合成，改变bitmap大小，图片去色等功能?

?

?

?

?

?

1. package?com.dzh.operateimage; ??
2. import?android.graphics.Bitmap; ??
3. import?android.graphics.Bitmap.Config; ??
4. import?android.graphics.BitmapFactory; ??
5. import?android.graphics.Canvas; ??
6. import?android.graphics.ColorMatrix; ??
7. import?android.graphics.ColorMatrixColorFilter; ??
8. import?android.graphics.Paint; ??
9. import?android.graphics.PorterDuff.Mode; ??
10. import?android.graphics.PorterDuffXfermode; ??
11. import?android.graphics.Rect; ??
12. import?android.graphics.RectF; ??
13. import?android.graphics.drawable.BitmapDrawable; ??
14. import?android.graphics.drawable.Drawable; ??
15. import?java.io.ByteArrayOutputStream; ??
16. import?java.io.File; ??
17. import?java.io.FileNotFoundException; ??
18. import?java.io.FileOutputStream; ??
19. import?java.io.IOException; ??
20. /**??
21. *?处理图片的工具类.??
22. */??
23. public?class?ImageTools?{ ??
24. public?static?final?int?LEFT?=?0; ??
25. public?static?final?int?RIGHT?=?1; ??
26. public?static?final?int?TOP?=?3; ??
27. public?static?final?int?BOTTOM?=?4; ??
28. /**?*/??
29. /**??
30. *?图片去色,返回灰度图片??
31. *???
32. [email protected]?
33. [email protected]?
34. */??
35. public?static?Bitmap?toGrayscale(Bitmap?bmpOriginal)?{ ??
36. int?width,?height; ??
37. height?=?bmpOriginal.getHeight(); ??
38. width?=?bmpOriginal.getWidth(); ??
39. Bitmap?bmpGrayscale?=?Bitmap.createBitmap(width,?height,?Bitmap.Config.RGB_565); ??
40. Canvas?c?=?new?Canvas(bmpGrayscale); ??
41. Paint?paint?=?new?Paint(); ??
42. ColorMatrix?cm?=?new?ColorMatrix(); ??
43. cm.setSaturation(0); ??
44. ColorMatrixColorFilter?f?=?new?ColorMatrixColorFilter(cm); ??
45. paint.setColorFilter(f); ??
46. c.drawBitmap(bmpOriginal,?0,?0,?paint); ??
47. return?bmpGrayscale; ??
48. } ??
49. /**?*/??
50. /**??
51. *?去色同时加圆角??
52. *???
53. [email protected]?
54. [email protected]?
55. [email protected]?
56. */??
57. public?static?Bitmap?toGrayscale(Bitmap?bmpOriginal,?int?pixels)?{ ??
58. return?toRoundCorner(toGrayscale(bmpOriginal),?pixels); ??
59. } ??
60. /**?*/??
61. /**??
62. *?把图片变成圆角??
63. *???
64. [email protected]?
65. [email protected]?
66. [email protected]?
67. */??
68. public?static?Bitmap?toRoundCorner(Bitmap?bitmap,?int?pixels)?{ ??
69. Bitmap?output?=?Bitmap ??
70. .createBitmap(bitmap.getWidth(),?bitmap.getHeight(),?Config.ARGB_8888); ??
71. Canvas?canvas?=?new?Canvas(output); ??
72. final?int?color?=?0xff424242; ??
73. final?Paint?paint?=?new?Paint(); ??
74. final?Rect?rect?=?new?Rect(0,?0,?bitmap.getWidth(),?bitmap.getHeight()); ??
75. final?RectF?rectF?=?new?RectF(rect); ??
76. final?float?roundPx?=?pixels; ??
77. paint.setAntiAlias(true); ??
78. canvas.drawARGB(0,?0,?0,?0); ??
79. paint.setColor(color); ??
80. canvas.drawRoundRect(rectF,?roundPx,?roundPx,?paint); ??
81. paint.setXfermode(new?PorterDuffXfermode(Mode.SRC_IN)); ??
82. canvas.drawBitmap(bitmap,?rect,?rect,?paint); ??
83. return?output; ??
84. } ??
85. /**?*/??
86. /**??
87. *?使圆角功能支持BitampDrawable??
88. *???
89. [email protected]?
90. [email protected]?
91. [email protected]?
92. */??
93. public?static?BitmapDrawable?toRoundCorner(BitmapDrawable?bitmapDrawable,?int?pixels)?{ ??
94. Bitmap?bitmap?=?bitmapDrawable.getBitmap(); ??
95. bitmapDrawable?=?new?BitmapDrawable(toRoundCorner(bitmap,?pixels)); ??
96. return?bitmapDrawable; ??
97. } ??
98. /**??
99. *?读取路径中的图片，然后将其转化为缩放后的bitmap??
100. *???
101. [email protected]?
102. */??
103. public?static?void?saveBefore(String?path)?{ ??
104. BitmapFactory.Options?options?=?new?BitmapFactory.Options(); ??
105. options.inJustDecodeBounds?=?true; ??
106. //?获取这个图片的宽和高???
107. Bitmap?bitmap?=?BitmapFactory.decodeFile(path,?options);?//?此时返回bm为空???
108. options.inJustDecodeBounds?=?false; ??
109. //?计算缩放比???
110. int?be?=?(int)(options.outHeight?/?(float)200); ??
111. if?(be?<=?0) ??
112. be?=?1; ??
113. options.inSampleSize?=?2;?//?图片长宽各缩小二分之一???
114. //?重新读入图片，注意这次要把options.inJustDecodeBounds?设为?false哦???
115. bitmap?=?BitmapFactory.decodeFile(path,?options); ??
116. int?w?=?bitmap.getWidth(); ??
117. int?h?=?bitmap.getHeight(); ??
118. System.out.println(w?+?"?"?+?h); ??
119. //?savePNG_After(bitmap,path);???
120. saveJPGE_After(bitmap,?path); ??
121. } ??
122. /**??
123. *?保存图片为PNG??
124. *???
125. [email protected]?
126. [email protected]?
127. */??
128. public?static?void?savePNG_After(Bitmap?bitmap,?String?name)?{ ??
129. File?file?=?new?File(name); ??
130. try?{ ??
131. FileOutputStream?out?=?new?FileOutputStream(file); ??
132. if?(bitmap.compress(Bitmap.CompressFormat.PNG,?100,?out))?{ ??
133. out.flush(); ??
134. out.close(); ??
135. } ??
136. }?catch?(FileNotFoundException?e)?{ ??
137. e.printStackTrace(); ??
138. }?catch?(IOException?e)?{ ??
139. e.printStackTrace(); ??
140. } ??
141. } ??
142. /**??
143. *?保存图片为JPEG??
144. *???
145. [email protected]?
146. [email protected]?
147. */??
148. public?static?void?saveJPGE_After(Bitmap?bitmap,?String?path)?{ ??
149. File?file?=?new?File(path); ??
150. try?{ ??
151. FileOutputStream?out?=?new?FileOutputStream(file); ??
152. if?(bitmap.compress(Bitmap.CompressFormat.JPEG,?100,?out))?{ ??
153. out.flush(); ??
154. out.close(); ??
155. } ??
156. }?catch?(FileNotFoundException?e)?{ ??
157. e.printStackTrace(); ??
158. }?catch?(IOException?e)?{ ??
159. e.printStackTrace(); ??
160. } ??
161. } ??
162. /**??
163. *?水印??
164. *???
165. [email protected]?
166. [email protected]?
167. */??
168. public?static?Bitmap?createBitmapForWatermark(Bitmap?src,?Bitmap?watermark)?{ ??
169. if?(src?==?null)?{ ??
170. return?null; ??
171. } ??
172. int?w?=?src.getWidth(); ??
173. int?h?=?src.getHeight(); ??
174. int?ww?=?watermark.getWidth(); ??
175. int?wh?=?watermark.getHeight(); ??
176. //?create?the?new?blank?bitmap???
177. Bitmap?newb?=?Bitmap.createBitmap(w,?h,?Config.ARGB_8888);//?创建一个新的和SRC长度宽度一样的位图???
178. Canvas?cv?=?new?Canvas(newb); ??
179. //?draw?src?into???
180. cv.drawBitmap(src,?0,?0,?null);//?在?0，0坐标开始画入src???
181. //?draw?watermark?into???
182. cv.drawBitmap(watermark,?w?-?ww?+?5,?h?-?wh?+?5,?null);//?在src的右下角画入水印???
183. //?save?all?clip???
184. cv.save(Canvas.ALL_SAVE_FLAG);//?保存???
185. //?store???
186. cv.restore();//?存储???
187. return?newb; ??
188. } ??
189. /**??
190. *?图片合成??
191. *???
192. [email protected]?
193. */??
194. public?static?Bitmap?potoMix(int?direction,?Bitmap...?bitmaps)?{ ??
195. if?(bitmaps.length?<=?0)?{ ??
196. return?null; ??
197. } ??
198. if?(bitmaps.length?==?1)?{ ??
199. return?bitmaps[0]; ??
200. } ??
201. Bitmap?newBitmap?=?bitmaps[0]; ??
202. //?newBitmap?=?createBitmapForFotoMix(bitmaps[0],bitmaps[1],direction);???
203. for?(int?i?=?1;?i?<?bitmaps.length;?i++)?{ ??
204. newBitmap?=?createBitmapForFotoMix(newBitmap,?bitmaps[i],?direction); ??
205. } ??
206. return?newBitmap; ??
207. } ??
208. ??
209. private?static?Bitmap?createBitmapForFotoMix(Bitmap?first,?Bitmap?second,?int?direction)?{ ??
210. if?(first?==?null)?{ ??
211. return?null; ??
212. } ??
213. if?(second?==?null)?{ ??
214. return?first; ??
215. }? ??
216. int?fw?=?first.getWidth(); ??
217. int?fh?=?first.getHeight(); ??
218. int?sw?=?second.getWidth(); ??
219. int?sh?=?second.getHeight(); ??
220. Bitmap?newBitmap?=?null; ??
221. if?(direction?==?LEFT)?{ ??
222. newBitmap?=?Bitmap.createBitmap(fw?+?sw,?fh?>?sh???fh?:?sh,?Config.ARGB_8888); ??
223. Canvas?canvas?=?new?Canvas(newBitmap); ??
224. canvas.drawBitmap(first,?sw,?0,?null); ??
225. canvas.drawBitmap(second,?0,?0,?null); ??
226. }?else?if?(direction?==?RIGHT)?{ ??
227. newBitmap?=?Bitmap.createBitmap(fw?+?sw,?fh?>?sh???fh?:?sh,?Config.ARGB_8888); ??
228. Canvas?canvas?=?new?Canvas(newBitmap); ??
229. canvas.drawBitmap(first,?0,?0,?null); ??
230. canvas.drawBitmap(second,?fw,?0,?null); ??
231. }?else?if?(direction?==?TOP)?{ ??
232. newBitmap?=?Bitmap.createBitmap(sw?>?fw???sw?:?fw,?fh?+?sh,?Config.ARGB_8888); ??
233. Canvas?canvas?=?new?Canvas(newBitmap); ??
234. canvas.drawBitmap(first,?0,?sh,?null); ??
235. canvas.drawBitmap(second,?0,?0,?null); ??
236. }?else?if?(direction?==?BOTTOM)?{ ??
237. newBitmap?=?Bitmap.createBitmap(sw?>?fw???sw?:?fw,?fh?+?sh,?Config.ARGB_8888); ??
238. Canvas?canvas?=?new?Canvas(newBitmap); ??
239. canvas.drawBitmap(first,?0,?0,?null); ??
240. canvas.drawBitmap(second,?0,?fh,?null); ??
241. } ??
242. return?newBitmap; ??
243. } ??
244. /**??
245. *?将Bitmap转换成指定大小??
246. [email protected]?
247. [email protected]?
248. [email protected]?
249. [email protected]?
250. */??
251. public?static?Bitmap?createBitmapBySize(Bitmap?bitmap,int?width,int?height) ??
252. { ??
253. return?Bitmap.createScaledBitmap(bitmap,?width,?height,?true); ??
254. } ??
255. /**??
256. *?Drawable?转?Bitmap??
257. *???
258. [email protected]?
259. [email protected]?
260. */??
261. public?static?Bitmap?drawableToBitmapByBD(Drawable?drawable)?{ ??
262. BitmapDrawable?bitmapDrawable?=?(BitmapDrawable)drawable; ??
263. return?bitmapDrawable.getBitmap(); ??
264. } ??
265. /**??
266. *?Bitmap?转?Drawable??
267. *???
268. [email protected]?
269. [email protected]?
270. */??
271. public?static?Drawable?bitmapToDrawableByBD(Bitmap?bitmap)?{ ??
272. Drawable?drawable?=?new?BitmapDrawable(bitmap); ??
273. return?drawable; ??
274. } ??
275. /**??
276. *?byte[]?转?bitmap??
277. *???
278. [email protected]?
279. [email protected]?
280. */??
281. public?static?Bitmap?bytesToBimap(byte[]?b)?{ ??
282. if?(b.length?!=?0)?{ ??
283. return?BitmapFactory.decodeByteArray(b,?0,?b.length); ??
284. }?else?{ ??
285. return?null; ??
286. } ??
287. } ??
288. /**??
289. *?bitmap?转?byte[]??
290. *???
291. [email protected]?
292. [email protected]?
293. */??
294. public?static?byte[]?bitmapToBytes(Bitmap?bm)?{ ??
295. ByteArrayOutputStream?baos?=?new?ByteArrayOutputStream(); ??
296. bm.compress(Bitmap.CompressFormat.PNG,?100,?baos); ??
297. return?baos.toByteArray(); ??
298. } ??
299. } ?

?