你正在尝试这个，我在我的应用程序注册中执行此代码
// Image Purpose
String selectedImagePath, ServerUploadPath = "" + "", str_response;
public static final int MEDIA_TYPE_IMAGE = 1;
private static final int CAMERA_CAPTURE_IMAGE_REQUEST_CODE = 100;
private static final int SELECT_PICTURE = 1;
private static final String IMAGE_DIRECTORY_NAME = "Hello Camera";
static File mediaFile;
private Uri fileUri; // file url to store image/video
boolean ChangeButton = true, btnChangePic = false;
// ImageView DefaultImage;
Bitmap DefaultImage;
Bitmap rotatedBMP;
public void cameraAndGalaryPicture() {
final String[] opString = { "Take Photo", "Choose From Gallery",
"Cancel" };
AlertDialog.Builder dbuilder = new AlertDialog.Builder(
SignUp_Activity.this);
dbuilder.setTitle("Add Photo!");
dbuilder.setItems(opString, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
if (opString[which].equals("Take Photo")) {
fromCamera();
} else if (opString[which].equals("Choose From Gallery")) {
fromFile();
} else {
dialog.dismiss();
}
}
});
dbuilder.show();
}
public void fromCamera() {
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
fileUri = getOutputMediaFileUri(MEDIA_TYPE_IMAGE);
intent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri);
// start the image capture Intent
startActivityForResult(intent, CAMERA_CAPTURE_IMAGE_REQUEST_CODE);
}
public Uri getOutputMediaFileUri(int type) {
return Uri.fromFile(getOutputMediaFile(type));
}
private static File getOutputMediaFile(int type) {
// External sdcard location
File mediaStorageDir = new File(
Environment
.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES),
IMAGE_DIRECTORY_NAME);
// Create the storage directory if it does not exist
if (!mediaStorageDir.exists()) {
if (!mediaStorageDir.mkdirs()) {
Log.d(IMAGE_DIRECTORY_NAME, "Oops! Failed create "
+ IMAGE_DIRECTORY_NAME + " directory");
return null;
}
}
// Create a media file name
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss",
Locale.getDefault()).format(new Date());
if (type == MEDIA_TYPE_IMAGE) {
mediaFile = new File(mediaStorageDir.getPath() + File.separator
+ "IMG_" + timeStamp + ".jpg");
} else {
return null;
}
Log.e("path", "media file:-" + mediaFile);
return mediaFile;
}
public void fromFile() {
Intent intent = new Intent(Intent.ACTION_PICK,
android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
intent.setType("image/*");
startActivityForResult(Intent.createChooser(intent, "Select File"),
SELECT_PICTURE);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == this.RESULT_OK) {
if (requestCode == SELECT_PICTURE) {
Uri selectedImageUri = data.getData();
selectedImagePath = getPath(selectedImageUri);
System.out.println("Image Path : " + selectedImagePath);
Log.d("select pah", "path" + selectedImagePath);
previewCapturedImage();
}
}
// if the result is capturing Image
if (requestCode == CAMERA_CAPTURE_IMAGE_REQUEST_CODE) {
if (resultCode == this.RESULT_OK) {
// successfully captured the image
// display it in image view
selectedImagePath = mediaFile.toString();
previewCapturedImage();
} else if (resultCode == this.RESULT_CANCELED) {
// user cancelled Image capture
Toast.makeText(getApplicationContext(),
"User cancelled image capture", Toast.LENGTH_SHORT)
.show();
} else {
// failed to capture image
Toast.makeText(getApplicationContext(),
"Sorry! Failed to capture image", Toast.LENGTH_SHORT)
.show();
}
}
}
public String getPath(Uri uri) {
String[] projection = { MediaStore.Images.Media.DATA };
Cursor cursor = this.managedQuery(uri, projection, null, null, null);
int column_index = cursor
.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
}
private void previewCapturedImage() {
try {
int targetW = 380;
int targetH = 800;
Log.d("Get w", "width" + targetW);
Log.d("Get H", "height" + targetH);
// Get the dimensions of the bitmap
BitmapFactory.Options bmOptions = new BitmapFactory.Options();
bmOptions.inJustDecodeBounds = true;
BitmapFactory.decodeFile(selectedImagePath, bmOptions);
int photoW = bmOptions.outWidth;
int photoH = bmOptions.outHeight;
// Determine how much to scale down the image
int scaleFactor = Math.min(photoW / targetW, photoH / targetH);
// Decode the image file into a Bitmap sized to fill the View
bmOptions.inJustDecodeBounds = false;
bmOptions.inSampleSize = scaleFactor << 1;
bmOptions.inPurgeable = true;
Bitmap bitmap = BitmapFactory.decodeFile(selectedImagePath,
bmOptions);
Matrix mtx = new Matrix();
try {
File imageFile = new File(selectedImagePath);
ExifInterface exif = new ExifInterface(
imageFile.getAbsolutePath());
int orientation = exif.getAttributeInt(
ExifInterface.TAG_ORIENTATION,
ExifInterface.ORIENTATION_NORMAL);
Log.e("Orintation", " :-" + orientation);
switch (orientation) {
case ExifInterface.ORIENTATION_ROTATE_270:
mtx.postRotate(270);
rotatedBMP = Bitmap.createBitmap(bitmap, 0, 0,
bitmap.getWidth(), bitmap.getHeight(), mtx, true);
if (rotatedBMP != bitmap)
bitmap.recycle();
iv_SelectPhoto.setImageBitmap(rotatedBMP);
Global.rg_image = rotatedBMP;
break;
case ExifInterface.ORIENTATION_ROTATE_180:
mtx.postRotate(180);
rotatedBMP = Bitmap.createBitmap(bitmap, 0, 0,
bitmap.getWidth(), bitmap.getHeight(), mtx, true);
if (rotatedBMP != bitmap)
bitmap.recycle();
iv_SelectPhoto.setImageBitmap(rotatedBMP);
Global.rg_image = rotatedBMP;
break;
case ExifInterface.ORIENTATION_ROTATE_90:
mtx.postRotate(90);
rotatedBMP = Bitmap.createBitmap(bitmap, 0, 0,
bitmap.getWidth(), bitmap.getHeight(), mtx, true);
if (rotatedBMP != bitmap)
bitmap.recycle();
iv_SelectPhoto.setImageBitmap(rotatedBMP);
Global.rg_image = rotatedBMP;
break;
case ExifInterface.ORIENTATION_NORMAL:
mtx.postRotate(0);
rotatedBMP = Bitmap.createBitmap(bitmap, 0, 0,
bitmap.getWidth(), bitmap.getHeight(), mtx, true);
if (rotatedBMP != bitmap)
bitmap.recycle();
iv_SelectPhoto.setImageBitmap(rotatedBMP);
Global.rg_image = rotatedBMP;
break;
default:
mtx.postRotate(0);
rotatedBMP = Bitmap.createBitmap(bitmap, 0, 0,
bitmap.getWidth(), bitmap.getHeight(), mtx, true);
if (rotatedBMP != bitmap)
bitmap.recycle();
iv_SelectPhoto.setImageBitmap(rotatedBMP);
// img_profilepic.setImageBitmap(BitmapFactory
// .decodeFile(mCurrentPhotoPath));
Global.rg_image = rotatedBMP;
}
Log.i("RotateImage", "Exif orientation: " + orientation);
} catch (Exception e) {
e.printStackTrace();
}
} catch (NullPointerException e) {
e.printStackTrace();
}
}
rg_image 用于在我的应用程序的 Global 类中存储图像。