Android调用手机拍照以及从相册选择照片
文章分类:移动开发
Java代码
1./*用来标识请求照相功能的activity*/
2. private static final int CAMERA_WITH_DATA = 3023; 3.
4. /*用来标识请求gallery的activity*/
5. private static final int PHOTO_PICKED_WITH_DATA = 3021; 6.
7. /*拍照的照片存储位置*/
8. private static final File PHOTO_DIR = new
File(Environment.getExternalStorageDirectory() + "/DCIM/Camera"); 9.
10. private File mCurrentPhotoFile;//照相机拍照得到的图片
/*用来标识请求照相功能的activity*/
private static final int CAMERA_WITH_DATA = 3023;
/*用来标识请求gallery的activity*/
private static final int PHOTO_PICKED_WITH_DATA = 3021;
/*拍照的照片存储位置*/
private static final File PHOTO_DIR = new
File(Environment.getExternalStorageDirectory() + "/DCIM/Camera");
private File mCurrentPhotoFile;//照相机拍照得到的图片
Java代码
1.private void doPickPhotoAction() {
2. Context context = EditContact.this; 3.
4. // Wrap our context to inflate list items using correct theme 5. final Context dialogContext = new ContextThemeWrapper(context,
6. android.R.style.Theme_Light); 7. String cancel="返回";
8. String[] choices;
9. choices = new String[2];
10. choices[0] = getString(R.string.take_photo); //拍照
11. choices[1] = getString(R.string.pick_photo); //从相册中选择
12. final ListAdapter adapter = new ArrayAdapter(dialogContext,
13. android.R.layout.simple_list_item_1, choices); 14.
15. final AlertDialog.Builder builder = new AlertDialog.Builder( 16. dialogContext);
17. builder.setTitle(R.string.attachToContact);
18. builder.setSingleChoiceItems(adapter, -1, 19. new DialogInterface.OnClickListener() {
20. public void onClick(DialogInterface dialog, int which)
{
21. dialog.dismiss(); 22. switch (which) { 23. case 0:{ 24. String status=Environment.getExternalStorageState(); 25.
if(status.equals(Environment.MEDIA_MOUNTED)){//判断是否有SD卡
26. doTakePhoto();// 用户点击了从照相机获取 27. }
28. else{ 29. showToast("没有SD卡");
30. }
31. break; 32.
33. }
34. case 1: 35. doPickPhotoFromGallery();// 从相册中去获取 36. break; 37. }
38. }
39. });
40. builder.setNegativeButton(cancel, new DialogInterface.OnClickListener() {
41.
42. @Override
43. public void onClick(DialogInterface dialog, int which) {
44. dialog.dismiss(); 45. }
46.
47. });
48. builder.create().show(); 49. }
50. }
51.
52. /**
53. * 拍照获取图片
54. *
55. */
56. protected void doTakePhoto() {
57. try {
58. // Launch camera to take photo for selected contact 59. PHOTO_DIR.mkdirs();// 创建照片的存储目录
60. mCurrentPhotoFile = new File(PHOTO_DIR, getPhotoFileName());// 给
新照的照片文件命名
61. final Intent intent = getTakePickIntent(mCurrentPhotoFile); 62. startActivityForResult(intent, CAMERA_WITH_DATA); 63. } catch (ActivityNotFoundException e) {
64. Toast.makeText(this, R.string.photoPickerNotFoundText, 65. Toast.LENGTH_LONG).show();
66. }
67. }
68.
69. public static Intent getTakePickIntent(File f) { 70. Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE, null); 71. intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(f)); 72. return intent;
73. }
74.
75. /**
76. * 用当前时间给取得的图片命名
77. *
78. */
79. private String getPhotoFileName() {
80. Date date = new Date(System.currentTimeMillis()); 81. SimpleDateFormat dateFormat = new SimpleDateFormat( 82. "'IMG'_yyyy-MM-dd HH:mm:ss");
83. return dateFormat.format(date) + ".jpg";
84. }
85.
86. // 请求Gallery程序
87. protected void doPickPhotoFromGallery() {
88. try {
89. // Launch picker to choose photo for selected contact 90. final Intent intent = getPhotoPickIntent(); 91. startActivityForResult(intent, PHOTO_PICKED_WITH_DATA); 92. } catch (ActivityNotFoundException e) {
93. Toast.makeText(this, R.string.photoPickerNotFoundText1, 94. Toast.LENGTH_LONG).show();
95. }
96. }
97.
98. // 封装请求Gallery的intent
99. public static Intent getPhotoPickIntent() {
100. Intent intent = new Intent(Intent.ACTION_GET_CONTENT, null);
101. intent.setType("image/*");
102. intent.putExtra("crop", "true"); 103. intent.putExtra("aspectX", 1); 104. intent.putExtra("aspectY", 1); 105. intent.putExtra("outputX", 80); 106. intent.putExtra("outputY", 80); 107. intent.putExtra("return-data", true); 108. return intent;
109. }
110.
111. // 因为调用了Camera和Gally所以要判断他们各自的返回情况,他们启动时是这样
的startActivityForResult
112. protected void onActivityResult(int requestCode, int resultCode, Intent
data) {
113. if (resultCode != RESULT_OK) 114. return;
115. switch (requestCode) {
116. case PHOTO_PICKED_WITH_DATA: {// 调用Gallery返回的
117. final Bitmap photo = data.getParcelableExtra("data");
118. // 下面就是显示照片了
119. System.out.println(photo); 120. //缓存用户选择的图片
121. img = getBitmapByte(photo); 122. mEditor.setPhotoBitmap(photo); 123. System.out.println("set new photo"); 124. break;
125. }
126. case CAMERA_WITH_DATA: {// 照相机程序返回的,再次调用图片剪辑程序
去修剪图片
127. doCropPhoto(mCurrentPhotoFile); 128. break;
129. }
130. }
131. }
132.
133. protected void doCropPhoto(File f) { 134. try {
135. // 启动gallery去剪辑这个照片
136. final Intent intent = getCropImageIntent(Uri.fromFile(f));
137. startActivityForResult(intent, PHOTO_PICKED_WITH_DATA);
138. } catch (Exception e) {
139. Toast.makeText(this, R.string.photoPickerNotFoundText,
140. Toast.LENGTH_LONG).show();
141. }
142. }
143.
144. /**
145. * Constructs an intent for image cropping. 调用图片剪辑程序
146. */
147. public static Intent getCropImageIntent(Uri photoUri) { 148. Intent intent = new Intent("com.android.camera.action.CROP");
149. intent.setDataAndType(photoUri, "image/*"); 150. intent.putExtra("crop", "true"); 151. intent.putExtra("aspectX", 1); 152. intent.putExtra("aspectY", 1); 153. intent.putExtra("outputX", 80); 154. intent.putExtra("outputY", 80); 155. intent.putExtra("return-data", true); 156. return intent;
157. }
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