1> 直接跳转到打电话页面 __拨打完电话回不到原来的应用,会停留在通讯录里,而且是直接拨打,不弹出提示
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:[NSString stringWithFormat:@“tel://%@",@"4001588168"]]];
2> 自动弹出提示选择后跳转到打电话页面 _ 会回去到原来的程序里(注意这里的telprompt),也会弹出提示 (可能会被拒)
NSString *telNumber = [NSString stringWithFormat:@"telprompt://%@",self.telePhoneNum];
3>这种方法,打完电话后还会回到原来的程序,也会弹出提示,推荐这种
NSMutableString * str=[[NSMutableString alloc] initWithFormat:@"tel:%@",@"186xxxx6979"];
UIWebView * callWebview = [[UIWebView alloc] init];
[callWebview loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:str]]];
titleEdgeInsets应该是最好的方法,如果只是简单的左对齐,也可以如下方法。
btn.contentHorizontalAlignment = UIControlContentHorizontalAlignmentLeft;
- (NSArray*)getImgArrFromImgStr:(NSString*)imgStr
{
return [imgStr componentsSeparatedByString:@","];
}
for(UIView *window in [UIApplication sharedApplication].windows) {
if ([window isKindOfClass:NSClassFromString(@“UIRemoteKeyboardWindow")]) {
[window addSubview:_doneInKeyboardButton];
}
}
- (void)registerForKeyboardNotifications {
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWasShown:) name:UIKeyboardWillShowNotification object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWasHidden:) name:UIKeyboardWillHideNotification object:nil];
}
- (void) keyboardWasShown:(NSNotification *) notification{
// NSNotification中的 userInfo字典中包含键盘的位置和大小等信息
NSDictionary *userInfo = [notification userInfo];
// UIKeyboardAnimationDurationUserInfoKey 对应键盘弹出的动画时间
CGFloat animationDuration = [[userInfo objectForKey:UIKeyboardAnimationDurationUserInfoKey] floatValue];
// UIKeyboardAnimationCurveUserInfoKey 对应键盘弹出的动画类型
NSInteger animationCurve = [[userInfo objectForKey:UIKeyboardAnimationCurveUserInfoKey] integerValue];
//数字彩,数字键盘添加“完成”按钮
if (_doneInKeyboardButton){
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:animationDuration];//设置添加按钮的动画时间
[UIView setAnimationCurve:(UIViewAnimationCurve)animationCurve];//设置添加按钮的动画类型
//设置自定制按钮的添加位置(这里为数字键盘添加“完成”按钮)
_doneInKeyboardButton.transform=CGAffineTransformTranslate(_doneInKeyboardButton.transform, 0, -53);
[UIView commitAnimations];
}
}
- (void) keyboardWasHidden:(NSNotification *)notification {
// NSNotification中的 userInfo字典中包含键盘的位置和大小等信息
NSDictionary *userInfo = [notification userInfo];
// UIKeyboardAnimationDurationUserInfoKey 对应键盘收起的动画时间
CGFloat animationDuration = [[userInfo objectForKey:UIKeyboardAnimationDurationUserInfoKey] floatValue]/3;
if (_doneInKeyboardButton.superview)
{
[UIView animateWithDuration:animationDuration animations:^{
//动画内容,将自定制按钮移回初始位置
_doneInKeyboardButton.transform=CGAffineTransformIdentity;
} completion:^(BOOL finished) {
//动画结束后移除自定制的按钮
[_doneInKeyboardButton removeFromSuperview];
}];
}
}
- (void)configDoneInKeyBoardButton {
CGFloat screenHeight = [UIScreen mainScreen].bounds.size.height;
//初始化
if (_doneInKeyboardButton == nil)
{
UIButton *doneInKeyboardButton = [UIButton buttonWithType:UIButtonTypeCustom];
[doneInKeyboardButton setTitle:@"·" forState:UIControlStateNormal];
[doneInKeyboardButton setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
doneInKeyboardButton.backgroundColor = [UIColor clearColor];
doneInKeyboardButton.frame = CGRectMake(0, screenHeight, (KScreenW - 2)/3, 53);
doneInKeyboardButton.titleLabel.font = [UIFont systemFontOfSize:35];
doneInKeyboardButton.adjustsImageWhenHighlighted = NO;
[doneInKeyboardButton addTarget:self action:@selector(finishAction) forControlEvents:UIControlEventTouchUpInside];
_doneInKeyboardButton = doneInKeyboardButton;
}
//每次必须从新设定“小数点”按钮的初始化坐标位置
_doneInKeyboardButton.frame = CGRectMake(0, screenHeight, (KScreenW - 2)/3, 53);
//由于ios8下,键盘所在的window视图还没有初始化完成,调用在下一次 runloop 下获得键盘所在的window视图
[self performSelector:@selector(addDoneButton) withObject:nil afterDelay:0.0f];
}
#pragma mark - 添加小数点按钮
- (void)addDoneButton{
//获得键盘所在的window视图,直接加到window上
for(UIView *window in [UIApplication sharedApplication].windows)
{
if([window isKindOfClass:NSClassFromString(@"UIRemoteKeyboardWindow")])
{
[window addSubview:_doneInKeyboardButton];
}
}
}
#pragma mark - 点击“小数点”按钮事件
-(void)finishAction {
_czNumTF.text = [NSString stringWithFormat:@"%@.",_czNumTF.text];
}
5.1、UILabel的宽度自适应
adjustsFontSizeToFitWidth
5.2、UILabel的高度自适应
boundingRectWithSize: options: attributes: context:
sizeThatFits:
//第一种
UIColor *color = [UIColor whiteColor];
_userName.attributedPlaceholder = [[NSAttributedString alloc] initWithString:@"用户名" attributes:@{NSForegroundColorAttributeName: color}];
//第二种
[_userName setValue:[UIColor whiteColor] forKeyPath:@"_placeholderLabel.textColor"];
- (IBAction)saveImageToAlbum:(id)sender {
UIImageWriteToSavedPhotosAlbum(self.imageView.image, self, @selector(imageSavedToPhotosAlbum:didFinishSavingWithError:contextInfo:), nil);
}
- (void)imageSavedToPhotosAlbum:(UIImage *)image didFinishSavingWithError:(NSError *)error contextInfo:(void *)contextInfo {
NSString *message = @"呵呵";
if (!error) {
message = @"成功保存到相册";
}else
{
message = [error description];
}
NSLog(@"message is %@",message);
}
edgesForExtendedLayout是一个类型为UIExtendedEdge的属性,指定边缘要延伸的方向。
因为iOS7鼓励全屏布局,它的默认值很自然地是UIRectEdgeAll,四周边缘均延伸,就是说,如果即使视图中上有navigationBar,下有tabBar,那么视图仍会延伸覆盖到四周的区域。
当 automaticallyAdjustsScrollViewInsets 为 NO 时,tableview 是从屏幕的最上边开始,也就是被 导航栏 & 状态栏覆盖。 当 automaticallyAdjustsScrollViewInsets 为 YES 时,也是默认行为,表现就比较正常了,和edgesForExtendedLayout = UIRectEdgeNone 有啥区别? 不注意可能很难觉察, automaticallyAdjustsScrollViewInsets 为YES 时,tableView 上下滑动时,是可以穿过导航栏&状态栏的,在他们下面有淡淡的浅浅红色
首先看下官方解释,默认 NO, 但是Bar 的默认属性是透明的。。。也就是说只有在不透明下才有用但是,测试结果很软肋,基本区别不大。。。但是对于解决一些Bug 是还是起作用的,比如说SearchBar的跳动问题,详情见:http://www.cnblogs.com/skyming/p/4059128.html, 其他UITableView,UIScrollView 位置的问题多数和这3属性相关。
//电话号码
NSString *telPattern = @"\\d{3,4}-)\\d{7,8}$";
//手机号码
NSString *phonePattern = @"^1(3[0-9]|5[0-35-9]|8[025-9])\\d{8}$";
//QQ号码
NSString *QQPattern = @"^[1-9]\\d[4,10]$";
//邮箱地址
NSString *mailPattern = @"^\\w+([-+.]\\w+)*@\\w+([-.]\\w+)*\\.\\w+([-.]\\w+)*$";
//URL网址
NSString *urlPattern = @"((http[s]{0,1}|ftp)://[a-zA-Z0-9\\.\\-]+\\.([a-zA-Z]{2,4})(:\\d+)?(/[a-zA-Z0-9\\.\\-~!@#$%^&*+?:_/=<>]*)?)|(www.[a-zA-Z0-9\\.\\-]+\\.([a-zA-Z]{2,4})(:\\d+)?(/[a-zA-Z0-9\\.\\-~!@#$%^&*+?:_/=<>]*)?)";
//身份证号码
NSString *IDCardPattern = @"\\d{14}[[0-9],0-9xX]";
//数字和字母
NSString *numCharacterPattern = @"^[A-Za-z0-9]+$";
//整数和小数
NSString *allNumPattern = @"^[0-9]+([.]{0,1}[0-9]+){0,1}$";
//汉字
NSString *hansPattern = @"^[\u4e00-\u9fa5]{0,}$";
//iP地址
NSString *ipPattern = @“((2[0-4]\\d|25[0-5]|[01]?\\d\\d?)\\.){3}(2[0-4]\\d|25[0-5]|[01]?\\d\\d?)";
NSString *pattern = [NSString stringWithFormat:@“%@|%@|%@|%@|%@|%@|%@|%@|%@|%@",telPattern,phonePattern,QQPattern,mailPattern,urlPattern,IDCardPattern,numCharacterPattern,allNumPattern,hansPattern,ipPattern];
NSRegularExpression *reges = [[NSRegularExpression alloc] initWithPattern:pattern options:0 error:nil];
NSString *str = @“————“;
NSArray *results = [reges matchesInString:str options:0 range:NSMakeRange(0, str.length)];
for (NSTextCheckingResult *result in results) {
NSLog(@"%@ %@",NSStringFromRange(result.range),[str substringWithRange:result.range]);
}
NSArray *array = [NSArray array];
[array sortedArrayUsingComparator:^NSComparisonResult(id obj1, id obj2) {
if (obj1 > obj2) {
return NSOrderedAscending;//升序
}
return NSOrderedDescending;//降序
}];
3.5英寸——Iphone5 : 320 x 480 640 x 960
4.0英寸——Iphone5s : 320 x 568 640 x 1136
4.7英寸——Iphone6 : 375 x 667 750 x 1334
5.5英寸——Iphone6 plus : 414 x 736 1080 x 1920
打开终端,进入项目所在的文件夹:使用命令find . -type d -name ".svn" |xargs rm -rvf就可将项目的.svn全部删除;
NSPredicate *predicate = [NSPredicate predicateWithFormat:@"key = %@",value];
NSArray *array = [modelArray filteredArrayUsingPredicate:predicate];
image= [image stretchableImageWithLeftCapWidth:image.size.width * 0.5 topCapHeight:image.size.height * 0.5];
NSMutableAttributedString *attr = [[NSMutableAttributedString alloc] initWithString:textField.text];
[attr addAttribute:NSKernAttributeName value:[NSNumber numberWithFloat:4.0] range:NSMakeRange(0, textField.text.length)];
textField.attributedText = attr;
1> NSFontAttributeName 设置字体属性,默认值:字体:Helvetica(Neue) 字号:12
2> NSForegroundColorAttributeName 设置字体颜色,取值为 UIColor对象,默认值为黑色
3> NSBackgroundColorAttributeName 设置字体所在区域背景颜色,取值为 UIColor对象,默认值为nil, 透明色
4> NSLigatureAttributeName 设置连体属性,取值为NSNumber 对象(整数),0 表示没有连体字符,1 表示使用默认的连体字符
5> NSKernAttributeName 设定字符间距,取值为 NSNumber 对象(整数),正值间距加宽,负值间距变窄
6> NSStrikethroughStyleAttributeName 设置删除线,取值为 NSNumber 对象(整数)
7> NSStrikethroughColorAttributeName 设置删除线颜色,取值为 UIColor 对象,默认值为黑色——设置中划线 [NSNumber numberWithInteger:NSUnderlineStyleSingle]
8> NSUnderlineStyleAttributeName 设置下划线,取值为 NSNumber 对象(整数),枚举常量 NSUnderlineStyle中的值,与删除线类似
9> NSUnderlineColorAttributeName 设置下划线颜色,取值为 UIColor 对象,默认值为黑色
10> NSStrokeWidthAttributeName 设置笔画宽度,取值为 NSNumber 对象(整数),负值填充效果,正值中空效果
11> NSStrokeColorAttributeName 填充部分颜色,不是字体颜色,取值为 UIColor 对象
12> NSShadowAttributeName 设置阴影属性,取值为 NSShadow 对象
13> NSTextEffectAttributeName 设置文本特殊效果,取值为 NSString 对象,目前只有图版印刷效果可用:
14> NSBaselineOffsetAttributeName 设置基线偏移值,取值为 NSNumber (float),正值上偏,负值下偏
15> NSObliquenessAttributeName 设置字形倾斜度,取值为 NSNumber (float),正值右倾,负值左倾
16> NSExpansionAttributeName 设置文本横向拉伸属性,取值为 NSNumber (float),正值横向拉伸文本,负值横向压缩文本
17> NSWritingDirectionAttributeName 设置文字书写方向,从左向右书写或者从右向左书写
18> NSVerticalGlyphFormAttributeName 设置文字排版方向,取值为 NSNumber 对象(整数),0 表示横排文本,1 表示竖排文本
19> NSLinkAttributeName 设置链接属性,点击后调用浏览器打开指定URL地址
20> NSAttachmentAttributeName 设置文本附件,取值为NSTextAttachment对象,常用于文字图片混排
21> NSParagraphStyleAttributeName 设置文本段落排版格式,取值为 NSParagraphStyle 对象
//下面code 可以解决
- (void)viewDidLayoutSubviews {
if ([self.tableView respondsToSelector:@selector(setSeparatorInset:)]) {
[self.tableView setSeparatorInset:UIEdgeInsetsZero];
}
if ([self.tableView respondsToSelector:@selector(setLayoutMargins:)]) {
[self.tableView setLayoutMargins:UIEdgeInsetsZero];
}
}
- (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPat{
if ([cell respondsToSelector:@selector(setLayoutMargins:)]) {
[cell setLayoutMargins:UIEdgeInsetsZero];
}
if ([cell respondsToSelector:@selector(setSeparatorInset:)]){
[cell setSeparatorInset:UIEdgeInsetsZero];
}
}
[tableView setTableFooterView:[[UIView alloc] initWithFrame:CGRectZero]];
- (void)conversionCharacterInterval:(NSInteger)maxInteger current:(NSString *)currentString withLabel:(UILabel *)label
{
CGRect rect = [[currentString substringToIndex:1] boundingRectWithSize:CGSizeMake(200,label.frame.size.height) options:NSStringDrawingUsesLineFragmentOrigin |NSStringDrawingUsesFontLeading
attributes:@{NSFontAttributeName: label.font}
context:nil];
NSMutableAttributedString *attrString = [[NSMutableAttributedString alloc] initWithString:currentString];
float strLength = [self getLengthOfString:currentString];
[attrString addAttribute:NSKernAttributeName value:@(((maxInteger - strLength) * rect.size.width)/(strLength - 1)) range:NSMakeRange(0, strLength)];
label.attributedText = attrString;
}
- (float)getLengthOfString:(NSString*)str {
float strLength = 0;
char *p = (char *)[str cStringUsingEncoding:NSUnicodeStringEncoding];
for (NSInteger i = 0 ; i < [str lengthOfBytesUsingEncoding:NSUnicodeStringEncoding]; i++) {
if (*p) {
strLength++;
}
p++;
}
return strLength/2;
}
//注:中文字符长度1,英文字符及数字长度0.5
unsigned int count = 0;
Ivar *ivars = class_copyIvarList([UITextField class], &count);
for (int i = 0; i < count; i ++) {
//取出成员变量
Ivar ivar = *(ivars + i);
//打印成员变量
NSLog(@"%s",ivar_getName(ivar));
}
1、首先的让cell的底部与挨着的子控件底部脱线建立关系;
2、设置估算高度 self.tableView.estimatedRowHeight = 70;
3、设置高度自动计算 self.tableView.rowHeight = UITableViewAutomaticDimension;
View controller-based status bar appearance 在info.plist里边添加它, value为NO,意思是说状态栏的样式更改不是基于控制器,而是由UIApplication决定;如果value=YES 状态栏的样式有控制器决定。
如果修改了nav的leftBarButtonItem就没有此功能,如果需要此功能可以设置self.interactivePopGestureRecognizer.delegate = nil;
先把xxx.app 和 xxx.dSYM 两个文件放在一个文件夹里,再根据crash的地址 ,用终端cd 到该文件夹,输入命令 atos -o xxx.app/xxx -arch arm64 0x113313131003 回车即可;
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