IOS开发相册图片多选和删除的功能

照例先上效果图

本次用的第三方框架做这个，但是需要考虑的地方也比较多，怎么把拍照和相册选取结合、删除照片后添加新照片时候的相册状态等等，所有的改变都是在操作数组。还需考虑图片的压缩上传。

本次用的第三方框架为：qbimagepickercontroller

按照惯例，上代码，本次代码较多

第一个控制器 .h里没啥代码

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#import "rrzshoweditviewcontroller.h"

#import "rrzsendshowtextcell.h"

#import "rrzsendshowimagecell.h"

#import "qbimagepickercontroller.h"

#import "showedititem.h"

static nsstring *sendshowtextcellid = @"sendshowtextcellid";

static nsstring *sendshowimagecellid = @"sendshowimagecellid";

@interface rrzshoweditviewcontroller ()<uitableviewdatasource, uitableviewdelegate, uinavigationcontrollerdelegate, uiimagepickercontrollerdelegate, uiscrollviewdelegate,uiactionsheetdelegate,qbimagepickercontrollerdelegate>

@property (strong, nonatomic) uitableview *mytableview;

/** model*/

@property (strong, nonatomic) showedititem *showedititem;

/** textview的text*/

@property (strong, nonatomic) nsstring *valuestr;

/** 文本输入*/

@property (weak, nonatomic) numberofwordstextview *textview;

@property (strong, nonatomic) qbimagepickercontroller *imagepickercontroller;

@end

@implementation rrzshoweditviewcontroller

-(showedititem *)showedititem{

if (!_showedititem) {

_showedititem = [[showedititem alloc]init];

_showedititem.selectedimages = @[].mutablecopy;

_showedititem.selectedasseturls = @[].mutablecopy;

}

return _showedititem;

}

-(qbimagepickercontroller *)imagepickercontroller{

if (!_imagepickercontroller) {

_imagepickercontroller = [[qbimagepickercontroller alloc] init];

_imagepickercontroller.filtertype = qbimagepickercontrollerfiltertypephotos;

_imagepickercontroller.delegate = self;

_imagepickercontroller.allowsmultipleselection = yes;

_imagepickercontroller.maximumnumberofselection = 9;

}

[_imagepickercontroller.selectedasseturls removeallobjects];

[_imagepickercontroller.selectedasseturls addobjectsfromarray:self.showedititem.selectedasseturls];

return _imagepickercontroller;

}

-(void)viewwillappear:(bool)animated{

[super viewwillappear:animated];

}

-(void)viewdidappear:(bool)animated{

[super viewdidappear:animated];

}

- (void)viewdidload {

[super viewdidload];

self.title = @"晒一晒";

[self setuptabelview];

[self setupnavitem];

}

-(void)setupnavitem{

uibarbuttonitem *rightitem = [uibarbuttonitem itemwithtitle:@"发布" hightitle:nil target:self action:@selector(sendclick) norcolor:navitemcolor highcolor:rgb_color(200, 200, 200)];

self.navigationitem.rightbarbuttonitem = rightitem;

}

// 压缩图片

- (nsdata *)resetsizeofimagedata:(uiimage *)source_image maxsize:(nsinteger)maxsize

{

//先调整分辨率

cgsize newsize = cgsizemake(source_image.size.width, source_image.size.height);

cgfloat tempheight = newsize.height / 1024;

cgfloat tempwidth = newsize.width / 1024;

if (tempwidth > 1.0 && tempwidth > tempheight) {

newsize = cgsizemake(source_image.size.width / tempwidth, source_image.size.height / tempwidth);

}

else if (tempheight > 1.0 && tempwidth < tempheight){

newsize = cgsizemake(source_image.size.width / tempheight, source_image.size.height / tempheight);

}

uigraphicsbeginimagecontext(newsize);

[source_image drawinrect:cgrectmake(0,0,newsize.width,newsize.height)];

uiimage *newimage = uigraphicsgetimagefromcurrentimagecontext();

uigraphicsendimagecontext();

//调整大小

nsdata *imagedata;

if (uiimagepngrepresentation(newimage)) {

imagedata = uiimagepngrepresentation(newimage);

}else{

imagedata = uiimagejpegrepresentation(newimage, 0.5);

}

nsuinteger sizeorigin = [imagedata length];

nsuinteger sizeoriginkb = sizeorigin / 1024;

if (sizeoriginkb > maxsize) {

nsdata *finallimagedata = uiimagejpegrepresentation(newimage,0.50);

return finallimagedata;

}

return imagedata;

}

-(void)sendclick{

[self.view endediting:yes];

[hudcontroller showprogresslabel:@""];

nsstring *textstr = self.textview.text;

textstr = [textstr stringbytrimmingcharactersinset:[nscharacterset whitespacecharacterset]];

if (textstr.length > 0 || self.showedititem.selectedimages.count > 0) {

dlog(@"发表晒一晒");

nsmutablearray *tempimages = [[nsmutablearray alloc]init];

for (int i = 0; i < self.showedititem.selectedimages.count; i++) {

uiimage *tempimage = self.showedititem.selectedimages[i];

nsdata *imgdata = [self resetsizeofimagedata:tempimage maxsize:150];

tempimage = [uiimage imagewithdata:imgdata];

[tempimages addobject:tempimage];

}

[[rrznetworkcontroller sharedcontroller]sendshowinfobyremark:self.textview.text myfiles:tempimages success:^(nsdictionary *data) {

nsstring *code = data[@"code"];

if ([code isequaltostring:@"success"]) {

[hudcontroller hidehudwithtext:@"发表成功"];

if (_sendsuccessblock) {

_sendsuccessblock();

}

[self.navigationcontroller popviewcontrolleranimated:yes];

}else{

[hudcontroller hidehud];

nsstring *message = data[@"message"];

if (message.length > 30) {

message = @"上传失败";

}

uialertview *alertview = [[uialertview alloc]initwithtitle:nil message:message delegate:nil cancelbuttontitle:@"确认" otherbuttontitles:nil, nil];

[alertview show];

}

} failure:^(nsdictionary *error) {

[hudcontroller hidehudwithtext:networkerror];

}];

}else{

[hudcontroller hidehudwithtext:@"文字或图片不能为空"];

}

-(void)setuptabelview{

// 添加mytableview

_mytableview = ({

uitableview *tableview = [[uitableview alloc] initwithframe:self.view.bounds style:uitableviewstyleplain];

tableview.backgroundcolor = [uicolor clearcolor];

tableview.datasource = self;

tableview.delegate = self;

tableview.separatorstyle = uitableviewcellseparatorstylenone;

[tableview registerclass:[rrzsendshowtextcell class] forcellreuseidentifier:sendshowtextcellid];

[tableview registerclass:[rrzsendshowimagecell class] forcellreuseidentifier:sendshowimagecellid];

[self.view addsubview:tableview];

[tableview mas_makeconstraints:^(masconstraintmaker *make) {

make.edges.equalto(self.view);

}];

tableview;

});

}

#pragma mark - uitableviewdelegate

-(nsinteger)tableview:(uitableview *)tableview numberofrowsinsection:(nsinteger)section{

return 2;

}

-(uitableviewcell *)tableview:(uitableview *)tableview cellforrowatindexpath:(nsindexpath *)indexpath{

if (indexpath.row == 0) {

rrzsendshowtextcell *cell = [tableview dequeuereusablecellwithidentifier:sendshowtextcellid];

self.textview = cell.numbertextview;

// cell.textvaluechangedblock = ^(nsstring *valuestr){

// weakself.valuestr = valuestr;

// };

return cell;

}else{

rrzsendshowimagecell *cell = [tableview dequeuereusablecellwithidentifier:sendshowimagecellid];

cell.item = self.showedititem;

__weak typeof(self) weakself = self;

cell.addpicturesblock = ^(){

[weakself showactionforphoto];

};

cell.deleteimageblock = ^(showedititem *item){

weakself.showedititem = item;

[weakself.mytableview reloaddata];

};

return cell;

}

-(cgfloat)tableview:(uitableview *)tableview heightforrowatindexpath:(nsindexpath *)indexpath{

if (indexpath.row == 0) {

return 200;

}else{

return 300;

}

#pragma mark uiactionsheet m

- (void)showactionforphoto{

uiactionsheet *actionsheet = [[uiactionsheet alloc]initwithtitle:nil delegate:self cancelbuttontitle:@"取消" destructivebuttontitle:nil otherbuttontitles:@"拍照",@"从相册选取", nil];

[actionsheet showinview:self.view];

}

#pragma mark - uiactionsheetdelegate

-(void)actionsheet:(uiactionsheet *)actionsheet clickedbuttonatindex:(nsinteger)buttonindex{

if (buttonindex == 0) {

dlog(@"拍照");

if (![uiimagepickercontroller issourcetypeavailable:uiimagepickercontrollersourcetypecamera]) {

uialertview *alert= [[uialertview alloc] initwithtitle:nil message:@"该设备不支持拍照" delegate:self cancelbuttontitle:@"确定" otherbuttontitles:null];

[alert show];

}else{

uiimagepickercontroller *picker = [[uiimagepickercontroller alloc] init];

picker.delegate = self;

picker.allowsediting = no;//设置可编辑

picker.sourcetype = uiimagepickercontrollersourcetypecamera;

[self presentviewcontroller:picker animated:yes completion:nil];//进入照相界面

}

}else if (buttonindex == 1){

dlog(@"相册");

if (![uiimagepickercontroller issourcetypeavailable:uiimagepickercontrollersourcetypephotolibrary]) {

uialertview *alert= [[uialertview alloc] initwithtitle:nil message:@"该设备不支持从相册选取文件" delegate:self cancelbuttontitle:@"确定" otherbuttontitles:null];

[alert show];

}else{

uinavigationcontroller *navigationcontroller = [[basenavigationcontroller alloc] initwithrootviewcontroller:self.imagepickercontroller];

[self presentviewcontroller:navigationcontroller animated:yes completion:null];

}

#pragma mark uiimagepickercontrollerdelegate

// 拍照回调

- (void)imagepickercontroller:(uiimagepickercontroller *)picker didfinishpickingmediawithinfo:(nsdictionary *)info{

uiimage *pickerimage = [info objectforkey:uiimagepickercontrolleroriginalimage];

[self.showedititem.selectedimages addobject:pickerimage];

alassetslibrary *assetslibrary = [[alassetslibrary alloc] init];

[assetslibrary writeimagetosavedphotosalbum:[pickerimage cgimage] orientation:(alassetorientation)pickerimage.imageorientation completionblock:^(nsurl *asseturl, nserror *error) {

[self.showedititem.selectedasseturls addobject:asseturl];

// [self.showedititem addaselectedasseturl:asseturl];

[self.mytableview reloadrowsatindexpaths:[nsarray arraywithobject:[nsindexpath indexpathforrow:1 insection:0]] withrowanimation:uitableviewrowanimationfade];

}];

[picker dismissviewcontrolleranimated:yes completion:^{}];

}

- (void)imagepickercontrollerdidcancel:(uiimagepickercontroller *)picker{

[picker dismissviewcontrolleranimated:yes completion:nil];

}

#pragma mark qbimagepickercontrollerdelegate

//相册回调

- (void)qb_imagepickercontroller:(qbimagepickercontroller *)imagepickercontroller didselectassets:(nsarray *)assets{

[self.showedititem.selectedimages removeallobjects];

nsmutablearray *selectedasseturls = [nsmutablearray new];

[imagepickercontroller.selectedasseturls enumerateobjectsusingblock:^(id obj, nsuinteger idx, bool *stop) {

[selectedasseturls addobject:obj];

}];

self.showedititem.selectedasseturls = selectedasseturls;

for (int i = 0; i < assets.count; i++) {

alasset *asset = assets[i];

uiimage *tempimg = [uiimage imagewithcgimage:asset.defaultrepresentation.fullscreenimage];

[self.showedititem.selectedimages addobject:tempimg];

}

@weakify(self);

dispatch_async(dispatch_get_global_queue(dispatch_queue_priority_default, 0), ^{

self.showedititem.selectedasseturls = selectedasseturls;

dispatch_async(dispatch_get_main_queue(), ^{

@strongify(self);

[self.mytableview reloadrowsatindexpaths:[nsarray arraywithobject:[nsindexpath indexpathforrow:1 insection:0]] withrowanimation:uitableviewrowanimationfade];

});

[self dismissviewcontrolleranimated:yes completion:nil];

}

- (void)qb_imagepickercontrollerdidcancel:(qbimagepickercontroller *)imagepickercontroller{

[self dismissviewcontrolleranimated:yes completion:nil];

}

#pragma mark - scrollview

// 滚动结束编辑收起键盘

- (void)scrollviewwillbegindragging:(uiscrollview *)scrollview{

if (scrollview == self.mytableview) {

[self.view endediting:yes];

}

- (void)dealloc

{

_mytableview.delegate = nil;

_mytableview.datasource = nil;

}

@end

第二个控制器 .h

#import <uikit/uikit.h>

#import "numberofwordstextview.h"

@interface rrzsendshowtextcell : uitableviewcell

@property (weak, nonatomic) numberofwordstextview *numbertextview;

@end

第二个控制器 .m

#define ktweetcontentcell_contentfont [uifont systemfontofsize:16]

#import "rrzsendshowtextcell.h"

@interface rrzsendshowtextcell()

@end

@implementation rrzsendshowtextcell

- (void)awakefromnib {

[super awakefromnib];

// initialization code

self.selectionstyle = uitableviewcellselectionstylenone;

}

- (id)initwithstyle:(uitableviewcellstyle)style reuseidentifier:(nsstring *)reuseidentifier

{

self = [super initwithstyle:style reuseidentifier:reuseidentifier];

if (self) {

numberofwordstextview *numbertextview = [[numberofwordstextview alloc] init];

numbertextview.frame = cgrectmake(7, 7, screen_width-7*2, 180);

numbertextview.wordsmaxnumer = 300;

numbertextview.placeholder = @"写点什么来晒一晒吧...";

numbertextview.textfont = [uifont systemfontofsize:14];

[self addsubview:numbertextview];

self.numbertextview = numbertextview;

}

return self;

}

@end

第三个 .h

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#import <uikit/uikit.h>

#import "showedititem.h"

@interface rrzsendshowimagecell : uitableviewcell

@property (copy, nonatomic) void (^addpicturesblock)();

@property (copy, nonatomic) void (^deleteimageblock)(showedititem *todelete);

@property (nonatomic,strong) showedititem *item;

@end

.m

#define kshowimageccell_width floorf((screen_width - 15*2- 10*3)/4)

#import "rrzsendshowimagecell.h"

#import "rrzshoweditimagecell.h"

#import "uicustomcollectionview.h"

static nsstring *cellid = @"rrzshowimageccellid";

@interface rrzsendshowimagecell()<uicollectionviewdelegate,uicollectionviewdatasource>

@property (strong, nonatomic) uicustomcollectionview *mediaview;

@property (strong, nonatomic) nsmutabledictionary *imageviewsdict;

/** <#注释#>*/

@property (strong, nonatomic) nsarray *imgs;

/** <#注释#>*/

@property (weak, nonatomic) uibutton *deletebtn;

@end

@implementation rrzsendshowimagecell

-(instancetype)initwithstyle:(uitableviewcellstyle)style reuseidentifier:(nsstring *)reuseidentifier{

if (self = [super initwithstyle:style reuseidentifier:reuseidentifier]) {

self.height = 300;

[self setupcollectionview];

self.selectionstyle = uitableviewcellselectionstylenone;

uilabel *label = [[uilabel alloc]initwithframe:cgrectmake(10, 0, screen_width - 20, 1)];

label.backgroundcolor = rgb_color(240, 240, 240);

[self.contentview addsubview:label];

}

return self;

}

-(void)setupcollectionview{

uicollectionviewflowlayout *layout = [[uicollectionviewflowlayout alloc]init];

layout.itemsize = cgsizemake(kshowimageccell_width, kshowimageccell_width);

self.mediaview = [[uicustomcollectionview alloc]initwithframe:cgrectmake(15, 10, screen_width - 2 * 15, 280) collectionviewlayout:layout];

self.mediaview.scrollenabled = no;

[self.mediaview setbackgroundcolor:[uicolor clearcolor]];

[self.mediaview registernib:[uinib nibwithnibname:nsstringfromclass([rrzshoweditimagecell class]) bundle:nil] forcellwithreuseidentifier:cellid];

self.mediaview.datasource = self;

self.mediaview.delegate = self;

[self.contentview addsubview:self.mediaview];

}

-(void)setitem:(showedititem *)item{

_item = item;

[self.mediaview reloaddata];

}

#pragma mark - uicollectionviewdelegate

-(nsinteger)collectionview:(uicollectionview *)collectionview numberofitemsinsection:(nsinteger)section{

nsinteger num = self.item.selectedimages.count;

return num < 9? num+ 1: num;

}

-(uicollectionviewcell *)collectionview:(uicollectionview *)collectionview cellforitematindexpath:(nsindexpath *)indexpath{

rrzshoweditimagecell *cell = [collectionview dequeuereusablecellwithreuseidentifier:cellid forindexpath:indexpath];

if (indexpath.row < self.item.selectedimages.count) {

cell.img = self.item.selectedimages[indexpath.row];

}else{

cell.img = nil;

}

cell.deletebtn.tag = indexpath.row;

[cell.deletebtn addtarget:self action:@selector(deletebtnclick:) forcontrolevents:uicontroleventtouchupinside];

self.deletebtn = cell.deletebtn;

return cell;

}

-(void)collectionview:(uicollectionview *)collectionview didselectitematindexpath:(nsindexpath *)indexpath{

if (indexpath.row == self.item.selectedasseturls.count || indexpath.row == self.item.selectedimages.count) {

if (_addpicturesblock) {

_addpicturesblock();

}

-(void)deletebtnclick:(uibutton *)btn{

nsinteger index = btn.tag;

[self.item.selectedimages removeobjectatindex:index];

[self.item.selectedasseturls removeobjectatindex:index];

if (_deleteimageblock) {

_deleteimageblock(_item);

}

@end

rrzshoweditimagecell.h 就不写了，就是自定义一个uicollectionviewcell

numberofwordstextview 在文中也用到了，就不贴代码了

总结

以上就是从相机或相册选取多图上传的代码实现，其他的描述就不写了，希望这篇文章对大家开发ios能有一定的帮助，如果有疑问大家可以留言交流。

IOS开发相册图片多选和删除的功能

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