Android调用手机拍照以及从相册选择照片.doc

中国手机开发者联盟-Android调用手机拍照以及从相册选择照片/*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 private void doPickPhotoAction() Context context = EditContact.this; / Wrap our context to inflate list items using correct theme final Context dialogContext = new ContextThemeWrapper(context, android.R.style.Theme_Light); String cancel=返回; String choices; choices = new String2; choices0 = getString(R.string.take_photo); /拍照 choices1 = getString(R.string.pick_photo); /从相册中选择 final ListAdapter adapter = new ArrayAdapter(dialogContext, android.R.layout.simple_list_item_1, choices); final AlertDialog.Builder builder = new AlertDialog.Builder( dialogContext); builder.setTitle(R.string.attachToContact); builder.setSingleChoiceItems(adapter, -1, new DialogInterface.OnClickListener() public void onClick(DialogInterface dialog, int which) dialog.dismiss(); switch (which) case 0: String status=Environment.getExternalStorageState(); if(status.equals(Environment.MEDIA_MOUNTED)/判断是否有SD卡 doTakePhoto();/ 用户点击了从照相机获取 else showToast(没有SD卡); break; case 1: doPickPhotoFromGallery();/ 从相册中去获取 break; ); builder.setNegativeButton(cancel, new DialogInterface.OnClickListener() Override public void onClick(DialogInterface dialog, int which) dialog.dismiss(); ); builder.create().show(); /* * 拍照获取图片 * */ protected void doTakePhoto() try / Launch camera to take photo for selected contact PHOTO_DIR.mkdirs();/ 创建照片的存储目录 mCurrentPhotoFile = new File(PHOTO_DIR, getPhotoFileName();/ 给新照的照片文件命名 final Intent intent = getTakePickIntent(mCurrentPhotoFile); startActivityForResult(intent, CAMERA_WITH_DATA); catch (ActivityNotFoundException e) Toast.makeText(this, R.string.photoPickerNotFoundText, Toast.LENGTH_LONG).show(); public static Intent getTakePickIntent(File f) Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE, null); intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(f); return intent; /* * 用当前时间给取得的图片命名 * */ private String getPhotoFileName() Date date = new Date(System.currentTimeMillis(); SimpleDateFormat dateFormat = new SimpleDateFormat( IMG_yyyy-MM-dd HH:mm:ss); return dateFormat.format(date) + .jpg; / 请求Gallery程序 protected void doPickPhotoFromGallery() try / Launch picker to choose photo for selected contact final Intent intent = getPhotoPickIntent(); startActivityForResult(intent, PHOTO_PICKED_WITH_DATA); catch (ActivityNotFoundException e) Toast.makeText(this, R.string.photoPickerNotFoundText1, Toast.LENGTH_LONG).show(); / 封装请求Gallery的intent public static Intent getPhotoPickIntent() Intent intent = new Intent(Intent.ACTION_GET_CONTENT, null); intent.setType(image/*); intent.putExtra(crop, true); intent.putExtra(aspectX, 1); intent.putExtra(aspectY, 1); intent.putExtra(outputX, 80); intent.putExtra(outputY, 80); intent.putExtra(return-data, true); return intent; / 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 protected void onActivityResult(int requestCode, int resultCode, Intent data) if (resultCode != RESULT_OK) return; switch (requestCode) case PHOTO_PICKED_WITH_DATA: / 调用Gallery返回的 final Bitmap photo = data.getParcelableExtra(data); / 下面就是显示照片了 System.out.println(photo); /缓存用户选择的图片 img = getBitmapByte(photo); mEditor.setPhotoBitmap(photo); System.out.println(set new photo); break; 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 doCropPhoto(mCurrentPhotoFile); break; protected void doCropPhoto(File f) try / 启动gallery去剪辑这个照片 final Intent intent = getCropImageIntent(Uri.fromFile(f); startActivityForResult(intent, PHOTO_PICKED_WITH_DATA); catch (Exception e) Toast.makeText(this, R.string.photoPickerNotFoundText, Toast.LENGTH_LONG).show(); /* * Constructs an intent for image cropping. 调用图片剪辑程序 */ public static Intent getCropImageIntent(Uri photoUri) Intent intent = new Intent(com.android.camera.action.CROP); intent.setDataAndType(photoUri, im