iOS打开照相机与本地相册选择图片

最近正好项目里面要集成“打开照相机与本地相册选择图片”的功能，今天就在这边给大家写一个演示程序；打开相机拍摄后或者在相册中选择一张照片，然后将它显示在界面上。好了废话不多说，因为比较简单直接上源码。

首先，我们在头文件中添加需要用到的actionSheet控件，显示图片的UIImageView控件，并且加上所需要的协议

[objc] view plain copy

#import <UIKit/UIKit.h>
@interface ImagePickerViewController : UIViewController<UIImagePickerControllerDelegate,UIActionSheetDelegate,UINavigationControllerDelegate>
@property (strong, nonatomic) IBOutlet UIImageView *headImage;
@property (strong, nonatomic) UIActionSheet *actionSheet;
- (IBAction)clickPickImage:(id)sender;
@end

通过点击我设置在界面中的按钮来呼出actionSheet控件，来选择相应的操作拍照或是在相册中选择相片，代码如下：

[objc] view plain copy

//
// ImagePickerViewController.m
// testAuto
//
// Created by silicon on 15/5/9.
//
#import "ImagePickerViewController.h"
@interface ImagePickerViewController ()
@end
@implementation ImagePickerViewController
@synthesize actionSheet = _actionSheet;
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
/**
@ 调用ActionSheet
*/
- (void)callActionSheetFunc{
if([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]){
self.actionSheet = [[UIActionSheet alloc] initWithTitle:@"选择图像" delegate:self cancelButtonTitle:@"取消" destructiveButtonTitle:nil otherButtonTitles:@"拍照", @"从相册选择", nil nil];
}else{
self.actionSheet = [[UIActionSheet alloc] initWithTitle:@"选择图像" delegate:self cancelButtonTitle:@"取消"destructiveButtonTitle:nil otherButtonTitles:@"从相册选择", nil nil];
}
self.actionSheet.tag = 1000;
[self.actionSheet showInView:self.view];
}
// Called when a button is clicked. The view will be automatically dismissed after this call returns
- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex{
if (actionSheet.tag == 1000) {
NSUInteger sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
// 判断是否支持相机
if([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
switch (buttonIndex) {
case 0:
//来源:相机
sourceType = UIImagePickerControllerSourceTypeCamera;
break;
case 1:
//来源:相册
sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
break;
case 2:
return;
}
}
else {
if (buttonIndex == 2) {
return;
} else {
sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum;
}
}
// 跳转到相机或相册页面
UIImagePickerController *imagePickerController = [[UIImagePickerController alloc] init];
imagePickerController.delegate = self;
imagePickerController.allowsEditing = YES;
imagePickerController.sourceType = sourceType;
[self presentViewController:imagePickerController animated:YES completion:^{
}];
}
}
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
[picker dismissViewControllerAnimated:YES completion:^{
}];
UIImage *image = [info objectForKey:UIImagePickerControllerOriginalImage];
self.headImage.image = image;
}
/*
#pragma mark - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
// Get the new view controller using [segue destinationViewController].
// Pass the selected object to the new view controller.
}
*/
- (IBAction)clickPickImage:(id)sender {
[self callActionSheetFunc];
}
@end

代码比较简单，也容易理解，运行的效果如下：

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