iOS从系统相册选取多张照片示例代码

之前写过UIImagePickerController调取系统相册图片（选取单张照片，多用于用户头像）

1.pod导入

pod 'CTAssetsPickerController'

2.添加头文件

#import <CTAssetsPickerController/CTAssetsPickerController.h>

3.添加delegate

<CTAssetsPickerControllerDelegate>

4.实现

- (void)upLoading {
[PHPhotoLibraryrequestAuthorization:^(PHAuthorizationStatus status){
if (status !=PHAuthorizationStatusAuthorized)return;
dispatch_async(dispatch_get_main_queue(), ^{
CTAssetsPickerController *picker = [[CTAssetsPickerControlleralloc] init];
picker.delegate =self;
// 显示选择的索引
picker.showsSelectionIndex =YES;
// 设置相册的类型：相机胶卷 +自定义相册
picker.assetCollectionSubtypes =@[
@(PHAssetCollectionSubtypeSmartAlbumUserLibrary),
@(PHAssetCollectionSubtypeAlbumRegular)];
// 不需要显示空的相册
picker.showsEmptyAlbums =NO;
[selfpresentViewController:pickeranimated:YEScompletion:nil];
});
}];
}
-(BOOL)assetsPickerController:(CTAssetsPickerController *)picker shouldSelectAsset:(PHAsset *)asset
{
NSInteger max =9;
if (picker.selectedAssets.count >= max) {
UIAlertController *alert = [UIAlertControlleralertControllerWithTitle:@"提示"message:[NSStringstringWithFormat:@"最多选择%zd张图片", max] preferredStyle:UIAlertControllerStyleAlert];
[alert addAction:[UIAlertActionactionWithTitle:@"好的"style:UIAlertActionStyleDefaulthandler:nil]];
[picker presentViewController:alertanimated:YEScompletion:nil];
// 这里不能使用self来modal别的控制器，因为此时self.view不在window上
returnNO;
}
returnYES;
}
-(void)assetsPickerController:(CTAssetsPickerController *)picker didFinishPickingAssets:(NSArray *)assets
{
NSArray *array =NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask,YES);
NSString *documents = [arraylastObject];
NSString *documentPath = [documentsstringByAppendingPathComponent:@"arrayXML.xml"];
NSArray *dataArray = [NSArrayarrayWithArray:assets];
[dataArray writeToFile:documentPathatomically:YES];
NSArray *resultArray = [NSArrayarrayWithContentsOfFile:documentPath];
NSLog(@"%@", documentPath);
// 关闭图片选择界面
[picker dismissViewControllerAnimated:YEScompletion:nil];
// 遍历选择的所有图片
self.plCollection.photoArray = assets;
for (NSInteger i =0; i < assets.count; i++) {
// 基本配置
CGFloat scale = [UIScreenmainScreen].scale;
PHImageRequestOptions *options = [[PHImageRequestOptionsalloc] init];
options.resizeMode  =PHImageRequestOptionsResizeModeExact;
options.deliveryMode =PHImageRequestOptionsDeliveryModeHighQualityFormat;
PHAsset *asset = assets[i];
CGSize size =CGSizeMake(asset.pixelWidth / scale, asset.pixelHeight / scale);
//    // 获取图片
[[PHImageManagerdefaultManager] requestImageForAsset:assettargetSize:size contentMode:PHImageContentModeDefaultoptions:options resultHandler:^(UIImage *_Nullable result,NSDictionary *_Nullable info) {
NSData *imageData =UIImageJPEGRepresentation([selfimageWithImageSimple:resultscaledToSize:CGSizeMake(200,200)], 0.5);
[selfossUpload:imageData];
}];
}
}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。

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