例如QQ、微信等的說說，評論等功能需要呼叫手機相簿新增並發表圖片。
再此就簡單的介紹一下如何從相簿中新增圖片。

1、首先建立呼叫相簿的按鈕，再次是給UIImageView新增點選手勢來實現。

self.tupianImageview = [[UIImageView alloc]initWithFrame:CGRectMake(SCREEN_WIDTH-69, 50, 20, 20)];
    self.tupianImageview.image = [UIImage imageNamed:@"muzhi_tupian_1"];
    self.tupianImageview.tag = 21
 
;
    [self.view addSubview:self.tupianImageview];

    self.tupianImageview.userInteractionEnabled = YES;
    UITapGestureRecognizer * PicTap = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(addPic:)];
    PicTap.delegate = self;
    [self.tupianImageview addGestureRecognizer:PicTap];
 

2、實現點選手勢的響應方法
這裡新增一個提示框，提示選擇是拍照（目前沒有做，提示框中不顯示）還是從相簿選擇照片。

-(void)addPic:(UITapGestureRecognizer *)tap{
    if (IOS8) {
        UIAlertController * alert = [UIAlertController alertControllerWithTitle:@"獲取圖片" message:nil preferredStyle:UIAlertControllerStyleActionSheet];
        UIAlertAction * defaultActionPic = [UIAlertAction actionWithTitle:@"相簿"
 
 style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
            ZZPhotoController *photoController = [[ZZPhotoController alloc]init];
            photoController.selectPhotoOfMax = 4;
            [photoController showIn:self result:^(id responseObject){
                NSArray *array = (NSArray *)responseObject;
                //  NSLog(@"-------------------%@",responseObject);
              //  [self.imagePickerArray addObjectsFromArray:array];

                self.imagePickerArray = [NSMutableArray arrayWithArray:array];

                [self addbottomImage];
            }];
        }];
        if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]){
            UIAlertAction * defaultActionCamer = [UIAlertAction actionWithTitle:@"相機" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
                ZZCameraController *cameraController = [[ZZCameraController alloc]init];
                cameraController.takePhotoOfMax = 4;
                cameraController.isSaveLocal = NO;
                [cameraController showIn:self result:^(id responseObject){
                    //  NSLog(@"%@",responseObject);
                    NSArray *array = (NSArray *)responseObject;
                    [self.imagePickerArray addObjectsFromArray:array];

                    [self addbottomImage];
                }];
            }];
            [alert addAction:defaultActionCamer];

        }
        UIAlertAction * cancelAction = [UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {

        }];
        [alert addAction:cancelAction];
        [alert addAction:defaultActionPic];
        [self presentViewController:alert animated:YES completion:nil];

    }
    else{
        UIActionSheet * sheet;
        //判斷是否支援相機
        if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
            sheet =[ [UIActionSheet alloc]initWithTitle:@"獲取圖片" delegate:self cancelButtonTitle:nil destructiveButtonTitle:@"取消" otherButtonTitles:@"相機",@"相簿", nil];
        }else{
            sheet = [[UIActionSheet alloc]initWithTitle:@"獲取圖片" delegate:self cancelButtonTitle:nil destructiveButtonTitle:@"取消" otherButtonTitles:@"相簿", nil];
        }
        [sheet showInView:self.view];
    }
}

判斷的是iOS系統版本

#define IOS8 ([[[UIDevice currentDevice] systemVersion] floatValue] >= 8.0 ? YES : NO)

3、實現選擇方法

#import <Foundation/Foundation.h>
#import "Common.h"

typedef void(^ZZCameraResult)(id responseObject);

@interface ZZCameraController : NSObject

@property (assign, nonatomic) BOOL isSaveLocal;

/*
 *   設定最多連拍張數
 */
@property (assign, nonatomic) NSInteger takePhotoOfMax;

/*
 *    設定圖片返回型別
 */
@property (assign, nonatomic) ZZImageType imageType;

-(void)showIn:(UIViewController *)controller result:(ZZCameraResult)result;

@end

#import "ZZCameraController.h"
#import "ZZCameraPickerViewController.h"
@interface ZZCameraController()

@property (strong,nonatomic) ZZCameraPickerViewController *cameraPickerController;

@end

@implementation ZZCameraController

-(ZZCameraPickerViewController *)cameraPickerController
{
    if (!_cameraPickerController) {
        _cameraPickerController = [[ZZCameraPickerViewController alloc]init];
    }
    return _cameraPickerController;
}

-(void)showIn:(UIViewController *)controller result:(ZZCameraResult)result
{
    self.cameraPickerController.CameraResult = result;
    //設定連拍最大張數
    self.cameraPickerController.takePhotoOfMax = self.takePhotoOfMax;
    //設定返回圖片型別
    self.cameraPickerController.imageType = self.imageType;
    self.cameraPickerController.isSavelocal = self.isSaveLocal;
    [controller presentViewController:self.cameraPickerController animated:YES completion:nil];
}

@end

拍照的後續會發布。