IOS打开照相机与本地相册选择图片实例详解

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

#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：

// 
// imagepickerviewcontroller.m 
// testauto 
// 
// created by silicon on 15/5/9. 
// copyright (c) 2015年 silicon. all rights reserved. 
// 
 
#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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