iOS从系统相册选取多张照片示例代码
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2024-02-15 19:48:16
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 'ctassetspic...
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]; }]; } }
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