556 lines
23 KiB
Objective-C
556 lines
23 KiB
Objective-C
//
|
||
// KBPersonInfoVC.m
|
||
// keyBoard
|
||
//
|
||
// Created by Mac on 2025/11/11.
|
||
// 个人资料
|
||
//
|
||
|
||
#import "KBPersonInfoVC.h"
|
||
#import <Masonry/Masonry.h>
|
||
#import "KBPersonInfoItemCell.h"
|
||
#import <PhotosUI/PhotosUI.h>
|
||
#import "LSTPopView.h"
|
||
#import "KBChangeNicknamePopView.h"
|
||
#import "KBGenderPickerPopView.h"
|
||
#import "KBMyVM.h"
|
||
@interface KBPersonInfoVC () <UITableViewDelegate, UITableViewDataSource, PHPickerViewControllerDelegate, UINavigationControllerDelegate, UIImagePickerControllerDelegate>
|
||
|
||
// 列表
|
||
@property (nonatomic, strong) BaseTableView *tableView; // 懒加载
|
||
|
||
// 头像区（表头）
|
||
@property (nonatomic, strong) UIView *headerView;
|
||
@property (nonatomic, strong) UIImageView *avatarView; // 头像
|
||
@property (nonatomic, strong) UIButton *editBadge; // 头像右下角的小铅笔
|
||
@property (nonatomic, strong) UILabel *modifyLabel; // “Modify” 文案
|
||
|
||
// 底部退出按钮（固定在屏幕底部）
|
||
@property (nonatomic, strong) UIButton *logoutBtn;
|
||
|
||
// 数据
|
||
@property (nonatomic, copy) NSArray<NSDictionary *> *items; // {title,value,arrow,copy}
|
||
// 压缩后的头像 JPEG 数据（可用于上传）
|
||
@property (nonatomic, strong) NSData *avatarJPEGData;
|
||
|
||
@property (nonatomic, strong) KBMyVM *myVM;
|
||
@property (nonatomic, strong) KBMyVM *viewModel; // 我的页面 VM
|
||
@property (nonatomic, strong) KBUser *userModel;
|
||
|
||
@end
|
||
|
||
@implementation KBPersonInfoVC
|
||
|
||
- (void)viewDidLoad {
|
||
[super viewDidLoad];
|
||
self.kb_titleLabel.text = KBLocalized(@"Settings"); // 导航标题
|
||
self.kb_navView.backgroundColor = [UIColor clearColor];
|
||
self.view.backgroundColor = [UIColor colorWithHex:0xF8F8F8];
|
||
|
||
// 构造数据
|
||
// self.items = @[
|
||
// @{ @"title": KBLocalized(@"Nickname"), @"value": @"", @"arrow": @YES, @"copy": @NO },
|
||
// @{ @"title": KBLocalized(@"Gender"), @"value": @"Choose", @"arrow": @YES, @"copy": @NO },
|
||
// @{ @"title": KBLocalized(@"User ID"), @"value": @"", @"arrow": @NO, @"copy": @YES },
|
||
// ];
|
||
|
||
|
||
[self.view addSubview:self.tableView];
|
||
[self.tableView mas_makeConstraints:^(MASConstraintMaker *make) {
|
||
make.left.right.bottom.equalTo(self.view);
|
||
make.top.equalTo(self.view).offset(KB_NAV_TOTAL_HEIGHT + 10);
|
||
}];
|
||
|
||
// 表头
|
||
self.tableView.tableHeaderView = self.headerView;
|
||
|
||
// 底部退出按钮固定在屏幕底部
|
||
[self.view addSubview:self.logoutBtn];
|
||
[self.logoutBtn mas_makeConstraints:^(MASConstraintMaker *make) {
|
||
make.left.equalTo(self.view).offset(16);
|
||
make.right.equalTo(self.view).offset(-16);
|
||
make.bottom.equalTo(self.view.mas_safeAreaLayoutGuideBottom).offset(-12);
|
||
make.height.mas_equalTo(56);
|
||
}];
|
||
|
||
// 列表底部腾出空间，避免被按钮挡住
|
||
UIEdgeInsets inset = self.tableView.contentInset;
|
||
inset.bottom = 56 + 24; // 按钮高度 + 额外间距
|
||
self.tableView.contentInset = inset;
|
||
self.viewModel = [[KBMyVM alloc] init];
|
||
__weak typeof(self) weakSelf = self;
|
||
[self.viewModel fetchUserDetailWithCompletion:^(KBUser * _Nullable user, NSError * _Nullable error) {
|
||
if (user) {
|
||
weakSelf.userModel = user;
|
||
[weakSelf.avatarView kb_setAvatarURL:weakSelf.userModel.avatarUrl placeholder:KBPlaceholderImage];
|
||
weakSelf.modifyLabel.text = weakSelf.userModel.nickName;
|
||
// 根据用户模型的 gender 显示当前性别，支持多语言
|
||
NSString *genderText = [weakSelf kb_genderDisplayText];
|
||
weakSelf.items = @[
|
||
@{ @"title": KBLocalized(@"Nickname"), @"value": weakSelf.userModel.nickName, @"arrow": @YES, @"copy": @NO },
|
||
@{ @"title": KBLocalized(@"Gender"), @"value": genderText, @"arrow": @YES, @"copy": @NO },
|
||
@{ @"title": KBLocalized(@"User ID"), @"value": weakSelf.userModel.userId, @"arrow": @NO, @"copy": @YES },
|
||
];
|
||
[weakSelf.tableView reloadData];
|
||
}
|
||
}];
|
||
}
|
||
|
||
|
||
/// 根据 userModel.gender 生成展示用的性别文案（带多语言）
|
||
- (NSString *)kb_genderDisplayText {
|
||
if (!self.userModel) {
|
||
return KBLocalized(@"Choose");
|
||
}
|
||
switch (self.userModel.gender) {
|
||
case UserSexMan:
|
||
return KBLocalized(@"Male");
|
||
case UserSexWeman:
|
||
return KBLocalized(@"Female");
|
||
case UserSexTwoSex:
|
||
return KBLocalized(@"The Third Gender");
|
||
default:
|
||
return KBLocalized(@"Choose");
|
||
}
|
||
}
|
||
|
||
#pragma mark - UITableView
|
||
|
||
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView { return 1; }
|
||
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { return self.items.count; }
|
||
|
||
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
|
||
return 56.0;
|
||
}
|
||
|
||
- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section { return 12.0; }
|
||
- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section { return [UIView new]; }
|
||
- (CGFloat)tableView:(UITableView *)tableView heightForFooterInSection:(NSInteger)section { return 0.01; }
|
||
|
||
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
|
||
static NSString *cid = @"KBPersonInfoItemCell";
|
||
KBPersonInfoItemCell *cell = [tableView dequeueReusableCellWithIdentifier:cid];
|
||
if (!cell) { cell = [[KBPersonInfoItemCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cid]; }
|
||
NSDictionary *it = self.items[indexPath.row];
|
||
BOOL isTop = (indexPath.row == 0);
|
||
BOOL isBottom = (indexPath.row == self.items.count - 1);
|
||
[cell configWithTitle:it[@"title"]
|
||
value:it[@"value"]
|
||
showArrow:[it[@"arrow"] boolValue]
|
||
showCopy:[it[@"copy"] boolValue]
|
||
isTop:isTop
|
||
isBottom:isBottom];
|
||
return cell;
|
||
}
|
||
|
||
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
|
||
if (indexPath.row == 0) {
|
||
// 昵称编辑 -> 弹窗
|
||
CGFloat width = KB_SCREEN_WIDTH;
|
||
KBChangeNicknamePopView *content = [[KBChangeNicknamePopView alloc] initWithFrame:CGRectMake(0, 0, width, 230)];
|
||
content.prefillNickname = self.items.firstObject[@"value"] ?: @"";
|
||
|
||
LSTPopView *pop = [LSTPopView initWithCustomView:content
|
||
parentView:self.view
|
||
popStyle:LSTPopStyleSmoothFromBottom
|
||
dismissStyle:LSTDismissStyleSmoothToBottom];
|
||
pop.bgColor = [[UIColor blackColor] colorWithAlphaComponent:0.4];
|
||
pop.hemStyle = LSTHemStyleBottom; // 居中
|
||
pop.isClickBgDismiss = YES; // 点击背景关闭
|
||
pop.isAvoidKeyboard = YES; // 规避键盘
|
||
pop.avoidKeyboardSpace = 10;
|
||
|
||
__weak typeof(self) weakSelf = self;
|
||
__weak typeof(pop) weakPop = pop;
|
||
content.closeHandler = ^{ [weakPop dismiss]; };
|
||
content.saveHandler = ^(NSString *nickname) {
|
||
if (nickname.length > 0) {
|
||
// 更新本地模型，避免返回再进入还是旧数据
|
||
weakSelf.userModel.nickName = nickname;
|
||
weakSelf.modifyLabel.text = nickname;
|
||
|
||
// 更新第一行展示
|
||
NSMutableArray *m = [weakSelf.items mutableCopy];
|
||
NSMutableDictionary *d0 = [m.firstObject mutableCopy];
|
||
d0[@"value"] = nickname; m[0] = d0; weakSelf.items = m;
|
||
[weakSelf.tableView reloadRowsAtIndexPaths:@[[NSIndexPath indexPathForRow:0 inSection:0]] withRowAnimation:UITableViewRowAnimationNone];
|
||
|
||
// 将修改后的用户信息同步到服务端
|
||
[weakSelf.myVM updateUserInfo:weakSelf.userModel completion:^(BOOL success, NSError * _Nullable error) {
|
||
if (error) {
|
||
[KBHUD showError:error.localizedDescription ?: KBLocalized(@"Network error")];
|
||
}
|
||
}];
|
||
}
|
||
[weakPop dismiss];
|
||
};
|
||
|
||
[pop pop];
|
||
// dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.15 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{ [content focusInput]; });
|
||
} else if (indexPath.row == 1) {
|
||
// 性别选择 -> 弹窗（性别文案支持多语言）
|
||
NSArray *genders = @[
|
||
@{@"id":@"1",@"name":KBLocalized(@"Male")},
|
||
@{@"id":@"2",@"name":KBLocalized(@"Female")},
|
||
@{@"id":@"3",@"name":KBLocalized(@"The Third Gender")},
|
||
];
|
||
CGFloat width = KB_SCREEN_WIDTH;
|
||
KBGenderPickerPopView *content = [[KBGenderPickerPopView alloc] initWithFrame:CGRectMake(0, 0, width, 300)];
|
||
content.items = genders;
|
||
// 取当前展示值对应的 id（如果有的话）
|
||
NSString *curName = self.items[1][@"value"];
|
||
NSString *selId = nil;
|
||
for (NSDictionary *d in genders) { if ([d[@"name"] isEqualToString:curName]) { selId = d[@"id"]; break; } }
|
||
content.selectedId = selId;
|
||
|
||
LSTPopView *pop = [LSTPopView initWithCustomView:content
|
||
parentView:nil
|
||
popStyle:LSTPopStyleSmoothFromBottom
|
||
dismissStyle:LSTDismissStyleSmoothToBottom];
|
||
pop.bgColor = [[UIColor blackColor] colorWithAlphaComponent:0.4];
|
||
pop.hemStyle = LSTHemStyleBottom;
|
||
pop.isClickBgDismiss = YES;
|
||
|
||
__weak typeof(self) weakSelf = self; __weak typeof(pop) weakPop = pop;
|
||
content.closeHandler = ^{ [weakPop dismiss]; };
|
||
content.saveHandler = ^(NSDictionary *selected) {
|
||
NSString *name = selected[@"name"] ?: @"";
|
||
// 将选择结果同步到本地缓存，供后续登录接口使用
|
||
NSString *genderId = selected[@"id"];
|
||
NSInteger genderValue = 0;
|
||
if ([genderId isKindOfClass:NSString.class]) {
|
||
NSInteger v = [genderId integerValue];
|
||
// 后端/模型使用 0/1/2，对应弹窗里的 1/2/3
|
||
if (v >= 1 && v <= 3) {
|
||
genderValue = v - 1;
|
||
}
|
||
}
|
||
[[NSUserDefaults standardUserDefaults] setInteger:genderValue forKey:KBSexSelectedGenderKey];
|
||
[[NSUserDefaults standardUserDefaults] synchronize];
|
||
|
||
// 同步更新本地 userModel，避免再次进入页面还是旧的性别
|
||
weakSelf.userModel.gender = (UserSex)genderValue;
|
||
|
||
NSMutableArray *m = [weakSelf.items mutableCopy];
|
||
NSMutableDictionary *d1 = [m[1] mutableCopy];
|
||
d1[@"value"] = name; m[1] = d1; weakSelf.items = m;
|
||
[weakSelf.tableView reloadRowsAtIndexPaths:@[[NSIndexPath indexPathForRow:1 inSection:0]] withRowAnimation:UITableViewRowAnimationNone];
|
||
|
||
// 将修改后的用户信息同步到服务端
|
||
[weakSelf.myVM updateUserInfo:weakSelf.userModel completion:^(BOOL success, NSError * _Nullable error) {
|
||
if (error) {
|
||
[KBHUD showError:error.localizedDescription ?: KBLocalized(@"Network error")];
|
||
}
|
||
}];
|
||
|
||
[weakPop dismiss];
|
||
};
|
||
|
||
[pop pop];
|
||
}else if (indexPath.row == 2){
|
||
NSString *userID = self.items[2][@"value"];
|
||
if (userID.length == 0) return;
|
||
UIPasteboard.generalPasteboard.string = userID;
|
||
[KBHUD showInfo:KBLocalized(@"Copy Success")];
|
||
}
|
||
}
|
||
|
||
#pragma mark - Actions
|
||
|
||
- (void)onTapAvatarEdit { [self presentImagePicker]; }
|
||
|
||
- (void)onTapLogout {
|
||
[self.myVM logout];
|
||
}
|
||
|
||
#pragma mark - Lazy UI（懒加载）
|
||
|
||
- (UITableView *)tableView {
|
||
if (!_tableView) {
|
||
// 使用 Plain，自行实现卡片留白与圆角，更贴近设计图
|
||
_tableView = [[BaseTableView alloc] initWithFrame:CGRectZero style:UITableViewStylePlain];
|
||
_tableView.backgroundColor = UIColor.clearColor;
|
||
_tableView.showsVerticalScrollIndicator = NO;
|
||
_tableView.separatorStyle = UITableViewCellSeparatorStyleNone; // 自定义分割
|
||
_tableView.dataSource = self; _tableView.delegate = self;
|
||
_tableView.contentInset = UIEdgeInsetsMake(8, 0, 16, 0);
|
||
}
|
||
return _tableView;
|
||
}
|
||
|
||
- (UIView *)headerView {
|
||
if (!_headerView) {
|
||
CGFloat w = UIScreen.mainScreen.bounds.size.width;
|
||
UIView *hv = [[UIView alloc] initWithFrame:CGRectMake(0, 0, w, 180)];
|
||
hv.backgroundColor = UIColor.clearColor;
|
||
|
||
[hv addSubview:self.avatarView];
|
||
[hv addSubview:self.editBadge];
|
||
[hv addSubview:self.modifyLabel];
|
||
|
||
[self.avatarView mas_makeConstraints:^(MASConstraintMaker *make) {
|
||
make.centerX.equalTo(hv);
|
||
make.top.equalTo(hv).offset(12);
|
||
make.width.height.mas_equalTo(96);
|
||
}];
|
||
[self.editBadge mas_makeConstraints:^(MASConstraintMaker *make) {
|
||
make.width.height.mas_equalTo(24);
|
||
make.centerX.equalTo(self.avatarView.mas_right).offset(-15);
|
||
make.centerY.equalTo(self.avatarView.mas_bottom).offset(-15);
|
||
}];
|
||
[self.modifyLabel mas_makeConstraints:^(MASConstraintMaker *make) {
|
||
make.top.equalTo(self.avatarView.mas_bottom).offset(10);
|
||
make.centerX.equalTo(hv);
|
||
}];
|
||
|
||
// 头像可点击：弹系统相册
|
||
UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(onTapAvatarEdit)];
|
||
[self.avatarView addGestureRecognizer:tap];
|
||
|
||
_headerView = hv;
|
||
}
|
||
return _headerView;
|
||
}
|
||
|
||
- (UIImageView *)avatarView {
|
||
if (!_avatarView) {
|
||
_avatarView = [[UIImageView alloc] init];
|
||
_avatarView.backgroundColor = [UIColor colorWithWhite:0.95 alpha:1.0];
|
||
_avatarView.layer.cornerRadius = 48; _avatarView.layer.masksToBounds = YES;
|
||
// 外白描边
|
||
_avatarView.layer.borderWidth = 3.0; _avatarView.layer.borderColor = UIColor.whiteColor.CGColor;
|
||
// 占位图
|
||
UIGraphicsBeginImageContextWithOptions(CGSizeMake(96, 96), NO, 0);
|
||
CGContextRef ctx = UIGraphicsGetCurrentContext();
|
||
[[UIColor colorWithRed:0.86 green:0.95 blue:0.90 alpha:1] setFill];
|
||
CGContextFillEllipseInRect(ctx, CGRectMake(0, 0, 96, 96));
|
||
UIImage *img = UIGraphicsGetImageFromCurrentImageContext();
|
||
UIGraphicsEndImageContext();
|
||
_avatarView.image = img;
|
||
_avatarView.userInteractionEnabled = YES;
|
||
}
|
||
return _avatarView;
|
||
}
|
||
|
||
- (UIButton *)editBadge {
|
||
if (!_editBadge) {
|
||
_editBadge = [UIButton buttonWithType:UIButtonTypeCustom];
|
||
_editBadge.layer.cornerRadius = 12; _editBadge.layer.masksToBounds = YES;
|
||
UIImage *img = [UIImage imageNamed:@"myperson_edit_icon"];
|
||
[_editBadge setImage:img forState:UIControlStateNormal];
|
||
[_editBadge addTarget:self action:@selector(onTapAvatarEdit) forControlEvents:UIControlEventTouchUpInside];
|
||
}
|
||
return _editBadge;
|
||
}
|
||
|
||
- (UILabel *)modifyLabel {
|
||
if (!_modifyLabel) {
|
||
_modifyLabel = [UILabel new];
|
||
_modifyLabel.text = @"Modify";
|
||
_modifyLabel.textColor = [UIColor colorWithHex:KBBlackValue];
|
||
_modifyLabel.font = [KBFont bold:18];
|
||
}
|
||
return _modifyLabel;
|
||
}
|
||
|
||
- (UIButton *)logoutBtn {
|
||
if (!_logoutBtn) {
|
||
_logoutBtn = [UIButton buttonWithType:UIButtonTypeSystem];
|
||
[_logoutBtn setTitle:KBLocalized(@"Log Out") forState:UIControlStateNormal];
|
||
[_logoutBtn setTitleColor:[UIColor colorWithHex:0xFF0000] forState:UIControlStateNormal];
|
||
_logoutBtn.titleLabel.font = [KBFont medium:16];
|
||
_logoutBtn.backgroundColor = UIColor.whiteColor;
|
||
_logoutBtn.layer.cornerRadius = 12; _logoutBtn.layer.masksToBounds = YES;
|
||
[_logoutBtn addTarget:self action:@selector(onTapLogout) forControlEvents:UIControlEventTouchUpInside];
|
||
}
|
||
return _logoutBtn;
|
||
}
|
||
|
||
#pragma mark - Image Picker
|
||
|
||
- (void)presentImagePicker {
|
||
if (@available(iOS 14.0, *)) {
|
||
PHPickerConfiguration *config = [[PHPickerConfiguration alloc] init];
|
||
config.selectionLimit = 1; // 只选一张
|
||
config.filter = [PHPickerFilter imagesFilter];
|
||
PHPickerViewController *picker = [[PHPickerViewController alloc] initWithConfiguration:config];
|
||
picker.delegate = self;
|
||
[self presentViewController:picker animated:YES completion:nil];
|
||
} else {
|
||
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
|
||
picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
|
||
picker.delegate = self;
|
||
[self presentViewController:picker animated:YES completion:nil];
|
||
}
|
||
}
|
||
|
||
#pragma mark - PHPickerViewControllerDelegate
|
||
|
||
- (void)picker:(PHPickerViewController *)picker didFinishPicking:(NSArray<PHPickerResult *> *)results API_AVAILABLE(ios(14.0)) {
|
||
[picker dismissViewControllerAnimated:YES completion:nil];
|
||
|
||
PHPickerResult *first = results.firstObject;
|
||
if (!first) return;
|
||
|
||
NSItemProvider *p = first.itemProvider;
|
||
if ([p canLoadObjectOfClass:UIImage.class]) {
|
||
__weak typeof(self) weakSelf = self;
|
||
[p loadObjectOfClass:UIImage.class completionHandler:^(__kindof id<NSItemProviderReading> _Nullable object, NSError * _Nullable error) {
|
||
UIImage *img = ([object isKindOfClass:UIImage.class] ? (UIImage *)object : nil);
|
||
if (!img) return;
|
||
NSUInteger targetKB = 50;
|
||
NSData *compressedData = [weakSelf kb_compressImage:img targetKB:targetKB];
|
||
if (!compressedData) return;
|
||
UIImage *compressedImage = [UIImage imageWithData:compressedData];
|
||
dispatch_async(dispatch_get_main_queue(), ^{
|
||
[weakSelf.myVM upLoadAvatarWithData:compressedData completion:^(BOOL success, NSError * _Nullable error) {
|
||
if (error) {
|
||
[KBHUD showError:error.localizedDescription];
|
||
return;
|
||
}
|
||
dispatch_async(dispatch_get_main_queue(), ^{
|
||
weakSelf.avatarView.image = compressedImage;
|
||
});
|
||
|
||
}];
|
||
|
||
});
|
||
}];
|
||
}
|
||
}
|
||
|
||
#pragma mark - UIImagePickerControllerDelegate
|
||
|
||
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary<UIImagePickerControllerInfoKey,id> *)info {
|
||
UIImage *img = info[UIImagePickerControllerEditedImage] ?: info[UIImagePickerControllerOriginalImage];
|
||
if (img) {
|
||
UIImage *compressed = [self kb_compressImage:img maxPixel:512 quality:0.85];
|
||
self.avatarView.image = compressed;
|
||
self.avatarJPEGData = UIImageJPEGRepresentation(compressed, 0.85);
|
||
}
|
||
[picker dismissViewControllerAnimated:YES completion:nil];
|
||
}
|
||
|
||
- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker {
|
||
[picker dismissViewControllerAnimated:YES completion:nil];
|
||
}
|
||
|
||
/// 压缩图片：最长边不超过 maxPixel，输出近似 quality 的 JPEG
|
||
- (UIImage *)kb_compressImage:(UIImage *)image maxPixel:(CGFloat)maxPixel quality:(CGFloat)quality {
|
||
if (!image) return nil;
|
||
maxPixel = MAX(64, maxPixel);
|
||
CGSize size = image.size;
|
||
CGFloat maxSide = MAX(size.width, size.height);
|
||
CGSize target = size;
|
||
if (maxSide > maxPixel) {
|
||
CGFloat scale = maxPixel / maxSide;
|
||
target = CGSizeMake(floor(size.width * scale), floor(size.height * scale));
|
||
}
|
||
UIGraphicsBeginImageContextWithOptions(target, YES, 1.0);
|
||
[image drawInRect:CGRectMake(0, 0, target.width, target.height)];
|
||
UIImage *scaled = UIGraphicsGetImageFromCurrentImageContext();
|
||
UIGraphicsEndImageContext();
|
||
|
||
NSData *jpeg = UIImageJPEGRepresentation(scaled ?: image, MIN(MAX(quality, 0.2), 0.95));
|
||
UIImage *result = [UIImage imageWithData:jpeg] ?: scaled ?: image;
|
||
return result;
|
||
}
|
||
/// 按目标大小（KB）压缩图片：
|
||
/// 1. 先逐步降低 JPEG 质量；
|
||
/// 2. 如果质量已经降到下限仍然太大，再按比例缩小尺寸，并重复尝试。
|
||
- (nullable NSData *)kb_compressImage:(UIImage *)image targetKB:(NSUInteger)targetKB {
|
||
if (!image || targetKB == 0) { return nil; }
|
||
|
||
NSUInteger maxBytes = targetKB * 1024;
|
||
|
||
// 初始质量参数
|
||
CGFloat compression = 0.9f;
|
||
CGFloat minCompression = 0.1f; // 不建议再低了，太低会糊
|
||
NSData *data = UIImageJPEGRepresentation(image, compression);
|
||
if (!data) return nil;
|
||
|
||
// 如果一开始就小于目标大小，直接返回
|
||
if (data.length <= maxBytes) {
|
||
return data;
|
||
}
|
||
|
||
// 1) 先通过降低质量来压缩
|
||
while (data.length > maxBytes && compression > minCompression + 0.01f) {
|
||
compression -= 0.1f;
|
||
data = UIImageJPEGRepresentation(image, compression);
|
||
if (!data) return nil;
|
||
}
|
||
|
||
if (data.length <= maxBytes) {
|
||
return data;
|
||
}
|
||
|
||
// 2) 质量降到下限还是太大 -> 等比缩放尺寸
|
||
UIImage *currentImage = image;
|
||
|
||
// 防止死循环，限定最多缩放几次
|
||
NSInteger maxResizeCount = 6;
|
||
NSInteger resizeCount = 0;
|
||
|
||
while (data.length > maxBytes && resizeCount < maxResizeCount) {
|
||
resizeCount++;
|
||
|
||
// 按面积比例来算缩放因子：新的面积约等于 (maxBytes / 当前字节数) * 原面积
|
||
CGFloat ratio = (CGFloat)maxBytes / (CGFloat)data.length;
|
||
// 为了更激进一点，可以乘个经验系数，比如 0.8
|
||
ratio *= 0.8f;
|
||
if (ratio <= 0.0f) {
|
||
ratio = 0.5f; // 兜底，至少缩小一半
|
||
}
|
||
|
||
CGFloat scale = sqrt(ratio);
|
||
if (scale >= 1.0f) {
|
||
scale = 0.5f; // 理论上不会走到这里，兜底
|
||
}
|
||
|
||
CGSize newSize = CGSizeMake(currentImage.size.width * scale,
|
||
currentImage.size.height * scale);
|
||
if (newSize.width < 10 || newSize.height < 10) {
|
||
// 太小就没意义了，直接 break，返回目前能做到的最小值
|
||
break;
|
||
}
|
||
|
||
// 绘制缩小后的图片
|
||
UIGraphicsBeginImageContextWithOptions(newSize, NO, currentImage.scale);
|
||
[currentImage drawInRect:CGRectMake(0, 0, newSize.width, newSize.height)];
|
||
UIImage *resizedImage = UIGraphicsGetImageFromCurrentImageContext();
|
||
UIGraphicsEndImageContext();
|
||
|
||
if (!resizedImage) {
|
||
break;
|
||
}
|
||
|
||
currentImage = resizedImage;
|
||
|
||
// 每次尺寸缩小之后，再重新从稍高一点的质量开始压一轮
|
||
compression = 0.9f;
|
||
data = UIImageJPEGRepresentation(currentImage, compression);
|
||
if (!data) return nil;
|
||
|
||
// 再次在质量范围内往下压
|
||
while (data.length > maxBytes && compression > minCompression + 0.01f) {
|
||
compression -= 0.1f;
|
||
data = UIImageJPEGRepresentation(currentImage, compression);
|
||
if (!data) return nil;
|
||
}
|
||
}
|
||
|
||
// 最终返回当前能做到的最小数据（可能略大于目标，但已经尽力）
|
||
return data;
|
||
}
|
||
|
||
|
||
- (KBMyVM *)myVM{
|
||
if (!_myVM) {
|
||
_myVM = [[KBMyVM alloc] init];
|
||
}
|
||
return _myVM;
|
||
}
|
||
|
||
@end
|