如何创建自定义的 UIImagePickerController 与全屏图像 ios

解决方法 :
第一个项目符号点，我想你可以使用 cameraOverlayView 属性的 UIImagePickerController 要在选取器默认接口添加您的自定义 UI 对象：
- (IBAction)pick:(id)sender {
NSLog(@"abc");
picker = [[UIImagePickerController alloc] init];
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
[picker setSourceType:UIImagePickerControllerSourceTypeCamera];
} else {
[picker setSourceType:UIImagePickerControllerSourceTypePhotoLibrary];
}

// Add here your custom UI here
[picker setCameraOverlayView:self.customCameraOverlayView];

[picker setDelegate:self];
[self presentViewController:picker animated:YES completion:nil];

}

已经测试了 UIImagePickerController ，它将返回带有它的全尺寸 （PixelXDimension 和 PixelYDimension） 的图像：
UIImagePickerControllerMediaMetadata = {
DPIHeight = 72;
DPIWidth = 72;
Orientation = 6;
"{Exif}" = {
ApertureValue = "2.526068811667588";
BrightnessValue = "-0.5779073354035674";
ColorSpace = 1;
DateTimeDigitized = "2013:04:07 22:30:03";
DateTimeOriginal = "2013:04:07 22:30:03";
ExposureMode = 0;
ExposureProgram = 2;
ExposureTime = "0.05882352941176471";
FNumber = "2.4";
Flash = 24;
FocalLenIn35mmFilm = 35;
FocalLength = "4.28";
ISOSpeedRatings = (
800
);
MeteringMode = 3;
PixelXDimension = 3264;
PixelYDimension = 2448;
SceneType = 1;
SensingMethod = 2;
ShutterSpeedValue = "4.058893689053568";
SubjectArea = (
1874,
1478,
610,
612
);
WhiteBalance = 0;
};
"{TIFF}" = {
DateTime = "2013:04:07 22:30:03";
Make = Apple;
Model = "iPhone 4S";
Software = "6.1.3";
XResolution = 72;
YResolution = 72;
};
};

此外你可以设置为图像视图内容的模式来调整和适应的容器的视图：
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
[self dismissViewControllerAnimated:YES completion:nil];
UIImage *image = [info objectForKey:UIImagePickerControllerOriginalImage];
[imageView setContentMode:UIViewContentModeScaleAspectFill];
[imageView setImage:image];
}

及后，以适应 imageView 当你需要在你的视图控制器以考虑设备的屏幕 (4 英寸或不） 使用 auto layout 或 auto sizing 。