调用系统的相册和摄像头问题

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