由于在一个程序中我们有很多地方需要上传图片，我们会通过摄像头或者是相册调取图片。如果每用到一个地方我们就重新写一次代码会造成文件的大量冗余，因此将他们进行封装到一个UIView中，只需要引入头文件，在UIViewController中使用两句代码就可以。由于代码比较多，粘贴到下面看着也会非常厌烦，因此将下载路径给出直接打开工程查看就好：http://code.cocoachina.com/view/134281
下面是UIView中的代码：
.h中的代码
#import <UIKit/UIKit.h>
typedef void(^ImageBlock)(UIImage *image);
@interface SZImageView : UIView
@property(nonatomic,copy)ImageBlock imageBlock;
+(SZImageView *)shareImageView;
-(void)getFrame:(CGSize)size viewController:(id)viewController;
@end
.m中的代码
#define Widthscale(scale) ((([UIScreen mainScreen].bounds.size.width) * scale) / (375))
#define Heightscale(scale) ((([UIScreen mainScreen].bounds.size.height) * scale) / (667))
#import "SZImageView.h"
#import <MobileCoreServices/MobileCoreServices.h>
@interface SZImageView()<UINavigationControllerDelegate,UIImagePickerControllerDelegate>
@property(nonatomic,strong)UINavigationController *navigation;
@property(nonatomic,strong) UIView *viewbg;
@property(nonatomic,strong)UIViewController *viewImageController;
@end
@implementation SZImageView
+(SZImageView *)shareImageView{
static SZImageView *imageview = nil;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
imageview = [[[NSBundle mainBundle]loadNibNamed:@"SZImageView" owner:nil options:nil]lastObject];
});
return imageview;
}
-(void )getFrame:(CGSize)size viewController:(id)viewController{
self.viewImageController = viewController;
UIWindow *window = [UIApplication sharedApplication].keyWindow;
window.frame = [UIScreen mainScreen].bounds;
_viewbg = [[UIView alloc]initWithFrame:window.frame];
_viewbg.backgroundColor = [[UIColor blackColor]colorWithAlphaComponent:0.3];
[window addSubview:_viewbg];
[_viewbg addSubview:self];
self.frame = CGRectMake(0, 0,Widthscale(size.width), Heightscale(size.height));
self.center = window.center;
}
- (IBAction)openCamera:(UIButton*)sender {
[self configImagePickerController:1];
}
- (IBAction)openPhoto:(UIButton*)sender {
[self configImagePickerController:0];
}
- (IBAction)delect:(UIButton *)sender {
[self delectAllView];
}
-(void)delectAllView{
[self removeFromSuperview];
[self.viewbg removeFromSuperview];
}
-(void)configImagePickerController:(NSInteger)number{
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
picker.allowsEditing = YES; //可编辑
switch (number) {
case 0:
//判断是否可以打开相册
if ([self isPhotoLibrary]) {
picker.sourceType =UIImagePickerControllerSourceTypePhotoLibrary;
}else{
NSLog(@"无法打开相册");
return;
}
break;
case 1:
if ([self isCameravail]){
//摄像头
picker.sourceType = UIImagePickerControllerSourceTypeCamera;
}else{
NSLog(@"没有摄像头");
return;
}
break;
default:
break;
}
[self delectAllView];
[self.viewImageController presentViewController:picker animated:YES completion:nil];
}
//判断相机是否可用
-(BOOL)isCameravail{
return [UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera];
}
-(BOOL)isPhotoLibrary{
return [UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary];
}
-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary<NSString *,id> *)info{
NSString *mdeiaType = [info objectForKey:UIImagePickerControllerMediaType];
if ([mdeiaType isEqualToString:(__bridge NSString*)kUTTypeImage]) {
UIImage *image = [info objectForKey:UIImagePickerControllerOriginalImage];
if (picker.sourceType == UIImagePickerControllerSourceTypeCamera) {
SEL saveImage = @selector(ImageWasSaveSuccessfully:didFinishSavingWithError:contextInfo:);
UIImageWriteToSavedPhotosAlbum(image, self, saveImage, nil);
}
self.imageBlock(image);
}else{
}
[picker dismissViewControllerAnimated:YES completion:nil];
}
-(void)imagePickerControllerDidCancel:(UIImagePickerController *)picker{
[picker dismissViewControllerAnimated:YES completion:nil];
}
-(void)ImageWasSaveSuccessfully:(UIImage *)paraImage didFinishSavingWithError:(NSError *)error contextInfo:(NSDictionary<NSString *,id> *)paraInfo{
if (error == nil) {
NSLog(@"保存成功");
}else{
NSLog(@"%@",error);
}
}
/* 下面的代码是一些相关的设置，如果想了解自己可以看一看
*/
//-(void)configImagePickerController{
//
// [self removeFromSuperview];
// [self.viewbg removeFromSuperview];
//
// UIImagePickerController *controller =[[UIImagePickerController alloc]init];
//
// controller.sourceType = UIImagePickerControllerSourceTypeCamera;
// NSString * requireMediaType = (__bridge NSString*)kUTTypeImage;
// controller.mediaTypes = [[NSArray alloc]initWithObjects:requireMediaType, nil];
//
// controller.allowsEditing = false;
// controller.delegate = self;
// //打开闪光灯
// controller.cameraFlashMode= UIImagePickerControllerCameraFlashModeOn;
// [self.viewImageController presentViewController:controller animated:YES completion:nil];
//
//
//}
//
////前置闪光灯是否可用
//-(BOOL)isCameraFlashavailFront{
// return [UIImagePickerController isFlashAvailableForCameraDevice:UIImagePickerControllerCameraDeviceFront];
//}
////后置闪光灯是否可用
//-(BOOL)isCameraFlashavailRear{
// return [UIImagePickerController isFlashAvailableForCameraDevice:UIImagePickerControllerCameraDeviceRear];
//}
//
////前摄像头是否可用
//-(BOOL)isCameraavailFront{
// return [UIImagePickerController isCameraDeviceAvailable:UIImagePickerControllerCameraDeviceFront];
//}
////后置摄像头会否可用
//-(BOOL)isCameraavailRear{
// return [UIImagePickerController isCameraDeviceAvailable:UIImagePickerControllerCameraDeviceRear];
//}
////判断是否支持拍照和录像
//-(BOOL)isCameraSupportMedia:(NSString *)paraMediaType
//{
// NSArray *avaiablemedia = [UIImagePickerController availableMediaTypesForSourceType:UIImagePickerControllerSourceTypeCamera];
// for (NSString *item in avaiablemedia) {
// if ([item isEqualToString:paraMediaType]) {
// return true;
// }
// }
// return false;
//}
@end
ViewController中的代码
#import "ViewController.h"
#import "SZImageView.h"
@interface ViewController ()
@property (weak, nonatomic) IBOutlet UIImageView *imageView;
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
[SZImageView shareImageView].imageBlock = ^(UIImage *image){
self.imageView.image = image;
};
}
- (IBAction)photoAlbum:(UIButton *)sender {
[[SZImageView shareImageView]getFrame:CGSizeMake(200, 300) viewController:self];
}
- (IBAction)cameraClick:(UIButton *)sender {
[[SZImageView shareImageView]getFrame:CGSizeMake(200, 300) viewController:self];
}
@end
大家看看就好，只是一个粗体大框，只是提供一个思路而已，可以根据具体需求更改