MLSelectPhoto類似微信多選圖片

先看下效果展示：

這個是基於MLSelectPhoto做了一點的修改
demo地址：https://github.com/tuwanli/MutplyPhotos
主要代碼：

#import "ViewController.h"
#import "MLSelectPhotoPickerViewController.h"
#import "MLSelectPhotoAssets.h"
#import <MobileCoreServices/MobileCoreServices.h>
#import "UIImage+MyResize.h"

#import <AssetsLibrary/ALAsset.h>

#import <AssetsLibrary/ALAssetsLibrary.h>

#import <AssetsLibrary/ALAssetsGroup.h>

#import <AssetsLibrary/ALAssetRepresentation.h>

#define p_w (self.view.frame.size.width-5*20)/4
@interface ViewController ()<UIActionSheetDelegate,UIImagePickerControllerDelegate,UINavigationControllerDelegate,UITableViewDataSource,UITableViewDelegate>

@property (nonatomic,strong)UITableView *tableView;
@property (nonatomic,strong)NSMutableArray *photoArr;
@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib
    _photoArr = [[NSMutableArray alloc]init];
    [self.view addSubview:self.tableView];
}

- (UITableView *)tableView
{

    if (!_tableView) {
        _tableView = [[UITableView alloc]initWithFrame:CGRectMake(0, _clickBtn.frame.origin.y+_clickBtn.frame.size.height, self.view.frame.size.width, self.view.frame.size.height-30-_clickBtn.frame.size.height) style:UITableViewStyleGrouped];
        _tableView.delegate = self;
        _tableView.dataSource = self;
    }
    return _tableView;
}
- (IBAction)clickAction {
    UIActionSheet *sheet = [[UIActionSheet alloc]initWithTitle:@"選擇照片" delegate:self cancelButtonTitle:@"取消" destructiveButtonTitle:@"拍照" otherButtonTitles:@"從相冊中選擇", nil];
    [sheet showInView:self.view];
}
#pragma mark--選取相冊圖片
- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex
{
    if (buttonIndex == 0) {

        [self selectFromCamera];
    }
    if (buttonIndex == 1) {
        MLSelectPhotoPickerViewController *selectVC = [[MLSelectPhotoPickerViewController alloc]init];
        selectVC.status = PickerViewShowStatusCameraRoll;
        selectVC.maxCount = 4;
        [selectVC showPickerVc:self];
        selectVC.callBack = ^(NSArray *assets){

            [assets enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
                MLSelectPhotoAssets *tempAsset = obj;
                //縮略圖
                UIImage *thumbImage  = tempAsset.thumbImage;
                UIImage *originImage = tempAsset.originImage;
                NSLog(@"縮略圖:%@\n原圖:%@",thumbImage,originImage);
                [_photoArr addObject:thumbImage];
            }];
            [_tableView reloadData];
        };

    }
}
- (void)selectFromCamera
{
    if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
        UIImagePickerController *picker = [[UIImagePickerController alloc] init];
        picker.delegate = self;
        picker.allowsEditing = YES;
        picker.sourceType = UIImagePickerControllerSourceTypeCamera;

        [self presentViewController:picker animated:YES completion:^{}];
    }else{
        //如果沒有提示用戶
        UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"提示" message:@"您的設備沒有相機" delegate:nil cancelButtonTitle:@"確定" otherButtonTitles:nil];
        [alert show];
    }
}
#pragma mark--相機拍照
-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{

    NSData *imageData = nil;
    UIImage *image = nil;
    if ([[info objectForKey:UIImagePickerControllerMediaType] isEqualToString:(NSString*)kUTTypeImage]){

        image = [info objectForKey:UIImagePickerControllerEditedImage];

        if( image == nil)
        {
            image = [info objectForKey:UIImagePickerControllerOriginalImage];
        }

        NSURL *url = [info objectForKey:UIImagePickerControllerReferenceURL];
        imageData = [NSData dataWithContentsOfFile:url.path];
        if( imageData == nil)
        {
            imageData = UIImageJPEGRepresentation(image, 1);
        }
        else if ([[info objectForKey:UIImagePickerControllerMediaType] isEqualToString:(NSString*)kUTTypeMovie]) {

            NSURL* url = [info objectForKey:UIImagePickerControllerMediaURL];
            imageData = [NSData dataWithContentsOfFile:url.path];
        }
        if( image != nil)
        {
            if(image.size.width*image.size.height > 1280*1280*8)
            {
                UIAlertView* alert = [[UIAlertView alloc] initWithTitle:@"圖片最大不能超過2560x5120！" message:nil delegate:nil cancelButtonTitle:@"確定" otherButtonTitles:nil];
                [alert show];
                return;
            }
            else
            {
                image = [image resizedImageToFitInSize:CGSizeMake(1280, 1280) scaleIfSmaller:NO];
                if(image != nil)
                {
                    imageData = UIImageJPEGRepresentation(image, 1);
                }
            }
            [picker dismissViewControllerAnimated:YES completion:^{
                NSLog(@"%@",image);
                [_photoArr addObject:image];
                [_tableView reloadData];
            }];

        }
    }
}

- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker{
    [self dismissViewControllerAnimated:YES completion:nil];
}
#pragma mark--UITableViewDelegate/UITableViewDatasource

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{

    return 1;
}
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{

    CGFloat height;
    if (_photoArr.count%4!=0) {
        height = (_photoArr.count/4+1)*p_w+(_photoArr.count/4+2)*20;
    }
    else{

        height = (_photoArr.count/4)*p_w+(_photoArr.count/4+1)*20;
    }
    return height;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{


    static NSString *cellID = @"cell";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellID];
    if (cell == nil) {
        cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellID];

        }
    CGFloat oneX = 20;
    CGFloat oneY = 20;
    for (int i=0; i<_photoArr.count; i++) {
        UIImageView *photoView = [[UIImageView alloc]init];
        [cell.contentView addSubview:photoView];
        int col = i%4;
        int row = i/4;
        CGFloat x = oneX + (p_w+oneX)*col;
        CGFloat y = oneY + (p_w+oneX)*row;
        photoView.frame = CGRectMake(x, y, p_w, p_w);
        [photoView setImage:_photoArr[i]];
    }


    return cell;
}
- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}
@end

可以獲取原圖或者縮略圖