在我的应用中,用户可以从图库中选择图片,也可以使用相机拍摄图片。
捕获时会将其添加到用户的图库中。
我发现除了相同的图像外,图像的大小也发生了很大的变化。
捕获:33kb
CODE:
if (requestCode == TAKEIMAGE) {
System.out.println("TAKE IMAGE");
int photoLength = 0;
Bitmap photo = (Bitmap) data.getExtras().get("data");
photoLength = GetBitmapLength(photo);
SetSubmissionImage(photo, photoLength);
}
取自画廊:1600kb
CODE:
else if (requestCode == CHOOSEIMAGE) {
System.out.println("CHOOSE IMAGE");
Uri selectedImageUri = data.getData();
selectedImagePath = getPath(selectedImageUri);
try {
FileInputStream fileis=new FileInputStream(selectedImagePath);
BufferedInputStream bufferedstream=new BufferedInputStream(fileis);
byte[] bMapArray= new byte[bufferedstream.available()];
bufferedstream.read(bMapArray);
int photoLength = 0;
Bitmap photo = BitmapFactory.decodeByteArray(bMapArray, 0, bMapArray.length);
bMapArray = null;
fileis.close();
bufferedstream.close();
//rotate to be portrait properly
try {
ExifInterface exif = new ExifInterface(selectedImagePath);
int orientation = exif.getAttributeInt(ExifInterface.TAG_ORIENTATION, 1);
Log.e("EXIF", "Exif: " + orientation);
Matrix matrix = new Matrix();
if (orientation == 6) {
matrix.postRotate(90);
}
else if (orientation == 3) {
matrix.postRotate(180);
}
else if (orientation == 8) {
matrix.postRotate(270);
}
photo = Bitmap.createBitmap(photo, 0, 0, photo.getWidth(), photo.getHeight(), matrix, true); // rotating bitmap
}
catch (Exception e) {
}
//photo = GetCompressedBitmap(photo);
photoLength = GetBitmapLength(photo);
SetSubmissionImage(photo, photoLength);
}
答案 0 :(得分:1)
与评论中的其他人一样,您需要以包含将保存图像的uri的意图启动相机活动:
// create Intent to take a picture and return control to the calling application
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
fileUri = getOutputMediaFileUri(MEDIA_TYPE_IMAGE); // create a file to save the image
intent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri); // set the image file name
// start the image capture Intent
startActivityForResult(intent, CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE);
然后在onActivityResult()方法中,您可以检索uri并从意图中的URI加载图像。