简单粗暴 不定期更新（始于161011）......
- btn对齐
button.contentHorizontalAlignment = UIControlContentHorizontalAlignmentRight;
- 子控件可以继承父控件的alpha，如果只需要设置父视图的alpha可以使用rgb
self.chooseBrandVC = [WMChooseBrandVC new];
self.chooseBrandVC.view.backgroundColor = [UIColor colorWithRed:0 green:0 blue:0 alpha:0.3];
self.chooseBrandVC.view.frame = CGRectMake(0, 0, _width_, _height_);
[self.view addSubview:self.chooseBrandVC.view];
[self addChildViewController:self.chooseBrandVC];
- btn 文字分行
[_sellingClothingBtn setTitle:@" 正经营\n 服装生意" forState:UIControlStateNormal];
_sellingClothingBtn.titleLabel.lineBreakMode = NSLineBreakByTruncatingMiddle;
_sellingClothingBtn.titleLabel.numberOfLines = 2;
- 判断一个触摸点是否在一个区域内
// CGGeometry.h
// CG_EXTERN bool CGRectContainsPoint(CGRect rect, CGPoint point)
// CG_EXTERN bool CGRectContainsRect(CGRect rect1, CGRect rect2)
- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
UITouch *touch = [touches anyObject];
CGPoint point = [touch locationInView:self.view];
if (!CGRectContainsPoint(self.tableView.frame, point)) {
self.didChooseBrandBlock();
}
}
- 延迟执行
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.3 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
// do sth.
});
- IBOutletCollection 今天碰到了这个，先记录，等有时间在详细记录下
@property (nonatomic, strong) IBOutletCollection(UILabel) NSArray *titleLabel;
- 监听textField的文字改变
// 不使用 UIControlEventValueChanged
// 使用 UIControlEventEditingChanged
[_textField addTarget:self action:@selector(textFieldTextDidChange:) forControlEvents:UIControlEventEditingChanged];
- 隐藏导航栏
// 动画YES 会流畅一些
// 方法1
- (void)viewWillDisappear:(BOOL)animated {
[super viewWillDisappear:animated];
[self.navigationController setNavigationBarHidden:NO animated:YES];
}
- (void)viewWillDisappear:(BOOL)animated {
[super viewWillDisappear:animated];
[self.navigationController setNavigationBarHidden:NO animated:YES];
}
// 方法2
self.navigationController.delegate = self;
- (void)navigationController:(UINavigationController *)navigationController willShowViewController:(UIViewController *)viewController animated:(BOOL)animated {
[self.navigationController setNavigationBarHidden:[viewController isKindOfClass:self.class] animated:YES];
}
- 设置rightBarButtonItem的字体
UIBarButtonItem *rightBarButton = [[UIBarButtonItem alloc] initWithTitle:@"确定" style:UIBarButtonItemStylePlain target:self action:@selector(didClickBarButton:)];
self.navigationItem.rightBarButtonItem = rightBarButton;
[self.navigationItem.rightBarButtonItem setTitleTextAttributes:@{NSFontAttributeName : [UIFont systemFontOfSize:13], NSForegroundColorAttributeName : FFColorFromRGB_0x(0x666666)} forState:UIControlStateNormal];
- xib中使用十六进制来设置控件颜色
如图：
- 属性字体嵌套
NSMutableAttributedString *str = [[NSMutableAttributedString alloc] initWithString:@"\t您上周的合伙人"];
NSAttributedString *appendStr = [[NSAttributedString alloc] initWithString:@" 1 " attributes:@{NSForegroundColorAttributeName : FFColorFromRGB_0x(0xb53a34)}];
[str appendAttributedString:appendStr];
appendStr = [[NSAttributedString alloc] initWithString:@"人，还差"];
[str appendAttributedString:appendStr];
appendStr = [[NSAttributedString alloc] initWithString:@" 7 " attributes:@{NSForegroundColorAttributeName : FFColorFromRGB_0x(0xb53a34)}];
[str appendAttributedString:appendStr];
appendStr = [[NSAttributedString alloc] initWithString:@"个才能升级为盟主，本周合伙人数量："];
[str appendAttributedString:appendStr];
appendStr = [[NSAttributedString alloc] initWithString:@"2 " attributes:@{NSForegroundColorAttributeName : FFColorFromRGB_0x(0xb53a34)}];
[str appendAttributedString:appendStr];
appendStr = [[NSAttributedString alloc] initWithString:@"人，还差"];
[str appendAttributedString:appendStr];
appendStr = [[NSAttributedString alloc] initWithString:@" 5 " attributes:@{NSForegroundColorAttributeName : FFColorFromRGB_0x(0xb53a34)}];
[str appendAttributedString:appendStr];
appendStr = [[NSAttributedString alloc] initWithString:@"个才能升级为盟主，您当前的佣金总数："];
[str appendAttributedString:appendStr];
appendStr = [[NSAttributedString alloc] initWithString:@"¥888 " attributes:@{NSForegroundColorAttributeName : FFColorFromRGB_0x(0xb53a34)}];
[str appendAttributedString:appendStr];
appendStr = [[NSAttributedString alloc] initWithString:@"（加油哦，您还不能够升级为盟主）。"];
[str appendAttributedString:appendStr];
self.explainLabel.attributedText = str;
- colloectionView 相关
- (UICollectionView *)collectionView {
if (!_collectionView) {
CGFloat itemWidth = (SCREEN_WIDTH - 30.0) / 2.0;
CGFloat itemHeight = 30;
UICollectionViewFlowLayout *flowLayout = [[UICollectionViewFlowLayout alloc] init];
flowLayout.itemSize = CGSizeMake(itemWidth, itemHeight);
flowLayout.minimumLineSpacing = 5;
flowLayout.minimumInteritemSpacing = 5;
flowLayout.sectionInset = UIEdgeInsetsMake(0, 10, 0, 10); // 距离上下左右
_collectionView = [[UICollectionView alloc] initWithFrame:CGRectZero collectionViewLayout:flowLayout];
_collectionView.delegate = self;
_collectionView.dataSource = self;
_collectionView.showsVerticalScrollIndicator = NO;
_collectionView.backgroundColor = [UIColor clearColor];
[_collectionView registerNib:[UINib nibWithNibName:@"GoodsCategoryCell" bundle:nil] forCellWithReuseIdentifier:@"cellItem"];
[_collectionView registerNib:[UINib nibWithNibName:@"GoodsCategoryHeaderView" bundle:nil] forSupplementaryViewOfKind:UICollectionElementKindSectionHeader withReuseIdentifier:@"headerView"];
}
return _collectionView;
}
- xib中的自适应 （和代码相结合）
// 首先按照最小值设置约束，然后在调整约束为 >= ，记着把label的numberofrows更改
// 在设置label的高度自适应，在heightforrow中 根据文字的宽度或者高度 适配高度
.
.
- label的文字的行间距
NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc] init];
paragraphStyle.alignment = NSTextAlignmentCenter;
paragraphStyle.lineSpacing = 10; // 行间距
NSMutableAttributedString *attString = [[NSMutableAttributedString alloc] initWithString:@"天青色等烟雨 天青色等烟雨 天青色等烟雨 \n 而我在等你" attributes:@{NSParagraphStyleAttributeName : paragraphStyle}];
label.attributedText = attString;
- 调用相机或相册
- (void)choosePhotoButtonClick {
UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"title" message:@"message" preferredStyle:UIAlertControllerStyleActionSheet];
[alertController addAction:[UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {
NSLog(@"\n-----> 取消");
}]];
WeakSelf(self);
[alertController addAction:[UIAlertAction actionWithTitle:@"打开相机呐" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
NSLog(@"\n-----> 打开相机呐");
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
[weakSelf getPhotoWithSourceType:UIImagePickerControllerSourceTypeCamera];
} else {
UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"标题" message:@"您的设备无法拍照，请检查设备" preferredStyle:UIAlertControllerStyleAlert];
[alertController addAction:[UIAlertAction actionWithTitle:@"知道啦" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {
NSLog(@"\n-----> 取消了");
}]];
[weakSelf presentViewController:alertController animated:YES completion:nil];
}
}]];
[alertController addAction:[UIAlertAction actionWithTitle:@"打开相册呐" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
NSLog(@"\n-----> 打开相册呐");
if([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary]) {
[weakSelf getPhotoWithSourceType:UIImagePickerControllerSourceTypePhotoLibrary];
} else {
[weakSelf getPhotoWithSourceType:UIImagePickerControllerSourceTypeSavedPhotosAlbum];
}
}]];
[self presentViewController:alertController animated:YES completion:nil];
}
// 修改头像调用系统相机和系统相册
- (void)getPhotoWithSourceType:(UIImagePickerControllerSourceType)sourceType {
UIImagePickerController *imagePickerController = [[UIImagePickerController alloc] init];
imagePickerController.sourceType = sourceType;
imagePickerController.modalTransitionStyle = UIModalTransitionStyleCoverVertical;
imagePickerController.delegate = self;
imagePickerController.allowsEditing = NO;
[self presentViewController:imagePickerController animated:YES completion:nil];
}
// UIImagePickerControllerDelegate
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
NSLog(@"\n-----> %@", info);
NSString *imgUrl = info[UIImagePickerControllerReferenceURL];
ALAssetsLibrary* assetslibrary = [ALAssetsLibrary new];
[assetslibrary assetForURL:pathStr resultBlock:^(ALAsset *asset) {
CGImageRef ref = [asset thumbnail]; // 缩略图
// CGImageRef ref = [[asset defaultRepresentation] fullScreenImage]; 全屏
// CGImageRef ref = [[asset defaultRepresentation] fullResolutionImage]; 高清
imgView.image = [[UIImage alloc] initWithCGImage:ref];
} failureBlock:^(NSError *error) {
// 请重新选择图片
}];
[picker dismissViewControllerAnimated:YES completion:^{
[UIApplication sharedApplication].statusBarHidden = NO;
[UIApplication sharedApplication].statusBarStyle = UIStatusBarStyleLightContent;
UIImage *image = [info objectForKey:UIImagePickerControllerOriginalImage];
self.imgView.image = image;
}];
}
- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker {
[picker dismissViewControllerAnimated:YES completion:^{
[UIApplication sharedApplication].statusBarHidden = NO;
[UIApplication sharedApplication].statusBarStyle = UIStatusBarStyleLightContent;
}];
}
- 保存图片到相册
// Adds a photo to the saved photos album. The optional completionSelector should have the form:
// - (void)image:(UIImage *)image didFinishSavingWithError:(NSError *)error contextInfo:(void *)contextInfo;
UIKIT_EXTERN void UIImageWriteToSavedPhotosAlbum(UIImage *image, __nullable id completionTarget, __nullable SEL completionSelector, void * __nullable contextInfo) __TVOS_PROHIBITED;
// 参数1：所保存的图片 参数2：保存完成后回调方法所在的对象 参数3：保存完成后的回调 参数4：可选的参数，保存了一个指向context数据的指针，将传递给回调方法
- (void)saveImgClick {
UIImage *img = [UIImage imageNamed:@"default"];
UIImageWriteToSavedPhotosAlbum(img, self, @selector(image:didFinishSavingWithError:contextInfo:), nil);
}
- (void)image:(UIImage *)image didFinishSavingWithError:(NSError *)error contextInfo:(void *)contextInfo {
NSString *message = @"";
if(error == NULL) {
message = @"图片保存相册失败";
} else {
message = @"图片保存相册成功";
}
}
- 复制
UIPasteboard *pasteboard = [UIPasteboard generalPasteboard];
pasteboard.string = textfield.text;
NSString *str = pasteboard.string;
- 当使用tableview自带的分割线的时候会在没有cell的时候出现多余的线 如下设置
self.tableview.tableFooterView = [UIView new];
- 删除线
typedef NS_ENUM(NSInteger, NSUnderlineStyle) { // 下划线 或者 删除线 的样式
NSUnderlineStyleNone = 0x00,
NSUnderlineStyleSingle = 0x01, // 细单
NSUnderlineStyleThick NS_ENUM_AVAILABLE(10_0, 7_0) = 0x02, // 粗单
NSUnderlineStyleDouble NS_ENUM_AVAILABLE(10_0, 7_0) = 0x09, // 细双
NSUnderlinePatternSolid NS_ENUM_AVAILABLE(10_0, 7_0) = 0x0000, // 实线
NSUnderlinePatternDot NS_ENUM_AVAILABLE(10_0, 7_0) = 0x0100, // 样式为点（虚线）－－－
NSUnderlinePatternDash NS_ENUM_AVAILABLE(10_0, 7_0) = 0x0200, // 样式为破折号 —— —— ——
NSUnderlinePatternDashDot NS_ENUM_AVAILABLE(10_0, 7_0) = 0x0300, // 样式为连续的破折号和点 ——－——－——－
NSUnderlinePatternDashDotDot NS_ENUM_AVAILABLE(10_0, 7_0) = 0x0400, // 样式为连续的破折号、点、点 ——－－——－－——－－
NSUnderlineByWord NS_ENUM_AVAILABLE(10_0, 7_0) = 0x8000 // 有空格的地方不设置下划线
} NS_ENUM_AVAILABLE(10_0, 6_0);
[mAttrStr addAttributes:@{NSStrikethroughStyleAttributeName : @(NSUnderlineStyleSingle)} range:[mAttrStr.string rangeOfString:markPri]];
- tableHeaderView tableFooterView
不要和...混淆
// accessory view for above row content. default is nil. not to be confused with section header
@property (nonatomic, strong, nullable) UIView *tableHeaderView;
// accessory view below content. default is nil. not to be confused with section footer
@property (nonatomic, strong, nullable) UIView *tableFooterView;
- 偷巧修改cell内容
图1 -> 图2，如图3设置 为负值
图1
图2
图3
-
xib 和 vc 关联
- shareSDK 授权微信登录
- (void)loginWithWxClick {
WeakSelf(self);
if (![ShareSDK hasAuthorized:SSDKPlatformTypeWechat]) {//未授权
//去授权
[ShareSDK authorize:SSDKPlatformTypeWechat settings:nil onStateChanged:^(SSDKResponseState state, SSDKUser *user, NSError *error) {
if (state == SSDKResponseStateSuccess) {
NSLog(@"微信授权成功！");
// 使用微信信息登录
[weakSelf requestWXLoginWithSSDKUser:user];
} else {
NSLog(@"微信授权失败！ %@",error);
}
}];
} else {
[ShareSDK getUserInfo:SSDKPlatformTypeWechat onStateChanged:^(SSDKResponseState state, SSDKUser *user, NSError *error) {
if (state == SSDKResponseStateSuccess) {
NSLog(@"微信已经授权，获取用户信息");
[weakSelf requestWXLoginWithSSDKUser:user];
} else {
NSLog(@"微信授权失败！ %@",error);
}
}];
}
}
- cell xib 中 存在accessoryType 的布局
cell 的 accessoryType 不一定存在，约束思路：可以在xib中 只约束左侧的label，右侧的label在 代码中约束 （如果在xib中约束了右侧label，然后在 layoutsubviews中重新对其布局 --- 无效）
- (void)layoutSubviews {
[super layoutSubviews];
[self.contentLabel mas_remakeConstraints:^(MASConstraintMaker *make) {
make.top.height.equalTo(self.titleLabel);
make.left.equalTo(self.titleLabel.mas_right).offset(0);
if (self.accessoryType == UITableViewCellAccessoryDisclosureIndicator) {
make.right.mas_equalTo(0);
} else {
make.right.mas_equalTo(-13);
}
}];
}
其实 使用 UITableViewCellStyleValue1，即可 [捂脸][捂脸][捂脸]
- 跳转到评论
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"itms-apps://itunes.apple.com/WebObjects/MZStore.woa/wa/viewContentsUserReviews?type=Purple+Software&id=***"]];
- 监听键盘变化
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(didChangeKeyboardFrameNotification:) name:UIKeyboardWillChangeFrameNotification object:nil];
- (void)didChangeKeyboardFrameNotification:(NSNotification *)notification {
CGRect rect = [notification.userInfo[UIKeyboardFrameEndUserInfoKey] CGRectValue];
[UIView animateWithDuration:[[notification.userInfo objectForKey:UIKeyboardAnimationDurationUserInfoKey] doubleValue] animations:^{
self.view.frame = CGRectMake(0, -self.view.height+rect.origin.y, _width_, _height_);
}];
}
- 两个横向自适应的label 使用xib添加约束
可以固定 a 或 b，其中一边的距离即可，如果两边都添加约束的话 会出现如下图情况
- 监听textview 的键盘右下角点击
textfield 有如下两个代理方法，但是 textview 没有
- (BOOL)textFieldShouldClear:(UITextField *)textField; // called when clear button pressed. return NO to ignore (no notifications)
- (BOOL)textFieldShouldReturn:(UITextField *)textField; // called when 'return' key pressed. return NO to ignore.
// self.textView.returnKeyType = UIReturnKeyDone;
- (BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text {
if ([text isEqualToString:@"\n"]) { // 按下return
// do sth.
[textView resignFirstResponder];
return NO; // 返回NO 代表return失效 （页面上按下return，不会出现换行，如果为yes，则输出页面会换行）
}
return YES;
}
- setter、getter
- (void)setTextNomalColor:(UIColor *)textNomalColor{
if (_textNomalColor != textNomalColor) {
for (UIButton *subButton in self.buttonsArray){
[subButton setTitleColor:textNomalColor forState:UIControlStateNormal];
}
_textNomalColor = textNomalColor;
}
}
- button imgview 或 label 相对位置
[button setTitleEdgeInsets:UIEdgeInsetsMake(0, -6, 0, 0)];
[button setImageEdgeInsets:UIEdgeInsetsMake(0, 64, 0, 0)];
- 数组限制
NSArray *infoArray = ......;
- xib中设置tablecell 下划线左右距离
- button高亮闪烁状态
// 需要在 Custom 状态下才有效
button.adjustsImageWhenHighlighted = NO;
- collection reloadSections 时候 会出现闪烁动画
[UIView performWithoutAnimation:^{
[self.collectionView reloadSections:[NSIndexSet indexSetWithIndex:1]];
}];
- 在storybord或xib中设置 button的圆角
layer.masksToBounds
layer.cornerRadius
- 测试的时候，怎么切换 手机 和 模拟器
- 更换状态栏颜色
UIView *statusBar = [[[UIApplication sharedApplication] valueForKey:@"statusBarWindow"] valueForKey:@"statusBar"];
statusBar.backgroundColor = [UIColor redColor];
不定期更新 不合适的地方 还请指点~ 感激不尽