1.给UITableViewController添加ToolBar。
self.navigationController.toolbarHidden = NO; //默认是隐藏的。
//添加MessageToolBar ,messageToolBar是IBOutlet的一个ToolBar。
self.toolbarItems = [[[NSMutableArray alloc] initWithArray:self.messageToolBar.items] autorelease];
self.navigationController.toolbar.barStyle = self.messageToolBar.barStyle;
2.后台运行一个方法,如果该方法需要修改UI,为了防止出错,应在主线程里修改UI。
[self performSelectorInBackground:@selector(updateInfo)];
在UpdateInfo里如果要修改UI ,
[self performSelectorOnMainThread:@selector(updateUIMethod) withObject:nil waitUntilDone:NO];
同时注意,后台程序的方法应该放在NSAutoRelease pool里的,如下所示:
NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
xxxx
[pool release];
3.在A类里动态的设定B类或者C类的方法。
[self.actionTarget performSelector:self.actionMethod withObject:parameter];
actionTarget -> id类型的属性。设置B 类或者C类。
actionMethod -> Sel类型的属性。设置具体的方法名
parameter -> 参数
4.设置Navigation的提示信息和进度条设置
self.navigationItem.prompt : 提示信息
self.navigationItem.titleView :存放ProgressBar等其它提示信息的View
在进度条显示完了后,需要清空显示进度信息:
self.navigationItem.prompt = nil;
self.navigationItem.titleView = nil;
5.从资源文件xib里加载View的方法
NSArray *nib = [[NSBundle mainBundle] loadNibNamed:@"MyView"
owner:self
options:nil];
MyView *view = [nib objectAtIndex:0];
6. UIAlterView 修改默认的Frame高度
在其委托里实现这个方法
-(void)willPresentAlertView:(UIAlertView*)alertView
{
alertView.frame =CGRectMake(5.f,1.f,100.f,200.f);
}
参考:http://*.com/questions/2763713/change-width-of-uialertview-in-ipad
7.获取iphone屏幕大小
CGRect screenBounds = [ [ UIScreen mainScreen ] bounds ];
CGRect screenRect= [ [ UIScreen mainScreen ] applicationframe ];
8. 修改TableView的样式,让UITableView显示Windows的背景图片。
self.tableView.backgroundColor = [UIColor clearColor];
self.tableView.opaque = NO;
self.tableView.backgroundView = nil;
如果要修改UITableCell的事情backgroundColor需要再 tableView:willDisplayCell:forRowAtIndexPath:里修改。
9.通过图片获取颜色。
[UIColor colorWithPatternImage:[UIImage imageNamed:@"imageName"]];修改分割线颜色
self.tableView.separatorColor = [UIColor blackColor];
显示文本的地方设置透明色
cell.textLabel.opaque = NO;
这样整个cell就有立体感。
10.设置UITableView 的checkmark显示样式
修改cell的 accessoryView
cell.accessoryView = UIImageView
11. 修改TableView距离导航缆的高度。
- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section
{ return 10.0;} - (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section{ return [[[UIView alloc] initWithFrame:CGRectZero] autorelease];;}12. 自定义TableViewCell的背景颜色和选择后的颜色。
方法一:将TableViewCell的backgroundView和SelectBackGroundView修改成指定的View就可以了。
方法二: 在Interface Builder里设置cell的image和SelectImage属性,但是要记得UItableView修改seperator的属性为None
13 颜色定义。
美工一般定义好颜色,然后让程序员去填充颜色,美工一般给的是RGB颜色,那么RGB颜色如果换成UIColor
[UIColor colorWithRed:31.0/255 green:204.0/255 blue:39.0/255 alpha:1.0];
Red,Green,Blue只接受0-1的参数,换算方法是除以255。
14. Xcode 4设置 NSZombieEnabled
if you click on the scheme drop down bar -> edit scheme -> arguments tab and then add NSZombieEnabled in the Environment Variables column and YES in the value column
15.自动生成多语言化的StringTable
如果在代码里全部是通过 NSLocalizedString(@"中文", nil)来对应多语言,最后要整理一个list,手动一个一个粘贴太麻烦。
自动化生成方法:在命令行目录下进入项目根目录:执行 genstrings -a $(find . -name "*.m"),就会自动生成一个文件对应。
参考网址 http://steelwheels.sourceforge.jp/Documents/genstring.html
http://iphone.longearth.net/2009/05/25/%E3%80%90iphone%E3%80%91localizablestrings%E3%82%92%E8%87%AA%E5%8B%95%E3%81%A7%E4%BD%9C%E3%82%8B-genstrings/
16.自定义bond字体
[UIFont fontWithName:@"Helvetica-Bold" size:16.0]
17 无边框透明UITableViewCell
self.tableView.separatorStyle = UITableViewCellSeparatorStyleNone;
self.tableView.separatorColor = [UIColor clearColor];
self.tableView.backgroundColor = [UIColor clearColor];
self.tableView.opaque = NO;
self.tableView.backgroundView = nil;
--Cell修改--
self.backgroundView = [[[UIView alloc] init] autorelease];
self.backgroundView.backgroundColor = [UIColor clearColor];
self.selectedBackgroundView = [[[UIView alloc] init] autorelease];
self.selectedBackgroundView.backgroundColor = [UIColor clearColor];
18. 隐藏Tabbar
SampleViewController*obj =[[SampleViewController alloc] init];
[obj setHidesBottomBarWhenPushed:YES];
[self.navigationController pushViewController:obj animated:YES];
[obj release];
19.从UIView获取UImage
#import QuartzCore/QuartzCore.h- (UIImage *)getImageFromView:(UIView *)orgView
{ UIGraphicsBeginImageContext(orgView.bounds.size);
[orgView.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return image;
}
20. 添加手式识别后,会屏蔽掉touchend方法
21.获取手机号码,和IMEI
获取本地iphone手机号码
[[NSUserDefaults standardUserDefaults] valueForKey:@"SBFormattedPhoneNumber"];
获取手机的imei
#import "Message/NetworkController.h"
NetworkController *ntc=[[NetworkController sharedInstance] autorelease];
NSString *imeistring = [ntc IMEI];
imeistring就是获取的imei。 IMEI(International Mobile Equipment Identity)是国际移动设备身份码的缩写,国际移动装备辨识码,是由15位数字组成的"电子串号",它与每台手机一一对应,而且该码是全世界唯一的。
22 NLog的格式,经常忘记,做个笔记
%@ 对象%d, %i 整数%u 无符整形%f 浮点/双字%x, %X 二进制整数%o 八进制整数%zu size_t%p 指针%e 浮点/双字 (科学计算)%g 浮点/双字%s C 字符串%.*s Pascal字符串%c 字符%C unichar%lld 64位长整数(long long)%llu 无符64位长整数%Lf 64位双字23.更改UISearchBar最下面黑色的边框
#define SEARCHBAR_BORDER_TAG 1337
- (void) viewDidLoad{ // Set a custom border on the bottom of the search bar, so it's not so harsh UISearchBar *searchBar = self.searchDisplayController.searchBar; UIView *bottomBorder = [[UIView alloc] initWithFrame:CGRectMake(0,searchBar.frame.size.height-1,searchBar.frame.size.width, 1)]; [bottomBorder setBackgroundColor:[UIColor colorWithWhite:200.0f/255.f alpha:1.0f]]; [bottomBorder setOpaque:YES]; [bottomBorder setTag:SEARCHBAR_BORDER_TAG]; [searchBar addSubview:bottomBorder]; [bottomBorder release];}
24.设置键盘的默认形式。
比如UITextField 设置为默认数字,和只允许数组数字
//默认数字
textField.keyboardType = UIKeyboardTypeNumbersAndPunctuation
//只允许输入数字
textField.keyboardType = UIKeyboardTypeNumberPad
25.UIButton设置文字左对齐
- emailBtn.contentHorizontalAlignment = UIontrolContentHorizontalAlignmentLeft; - emailBtn.contentEdgeInsets = UIEdgeInsetsMake(0, 10, 0, 0); - CGRect buttonRect = emailBtn.bounds; UILabel *myLabel = [[UILabel alloc] initWithFrame: buttonRect]; myLabel = UITextAlignmentLeft; [emailBtn addSubview:myLabel];[myLabel release];
26. retain异常的时候重载这个方法设置断点查看和分析
- (id) retain
{ // Break here to see who is retaining me. return [super retain];}
27.去掉白色半圆
Plist添加
Icon already includes gloss effects 为YES
UIPrerenderedIcon 设置不起作用(Xcode4 .0.2)
28.tableView reloadRowsAtIndexPaths 如果不在可见区域,将不会重新加载。
29. 设置应用程序的statusbaryanse
再plist里设置Status bar style Opaque black style
30. 设置控件的copy paste的本地化
- 设置Localization native development region =》 china
- 将项目的en.lproj 改成zh_CN.lproj
31. 允许应用程序通过itunes上传文件(ios3.2以上)
在info.plist里设置 UIFileSharingEnabled => YES
32. 获取UICOLOR的rgb值
const CGFloat* components = CGColorGetComponents(SelectedColor.CGColor);NSLog(@"Red: %f", components[0]);NSLog(@"Green: %f", components[1]); NSLog(@"Blue: %f", components[2]);NSLog(@"Alpha: %f", CGColorGetAlpha(SelectedColor.CGColor));
33.获取2个时间之间的天,小时,分钟
+(NSString *)TimeRemainingUntilDate:(NSDate *)date {
NSTimeInterval interval = [date timeIntervalSinceNow]; NSString * timeRemaining = nil; if (interval > 0) { div_t d = div(interval, 86400); int day = d.quot; div_t h = div(d.rem, 3600); int hour = h.quot; div_t m = div(h.rem, 60); int min = m.quot; NSString * nbday = nil; if(day > 1) nbday = @"days"; else if(day == 1) nbday = @"day"; else nbday = @""; NSString * nbhour = nil; if(hour > 1) nbhour = @"hours"; else if (hour == 1) nbhour = @"hour"; else nbhour = @""; NSString * nbmin = nil; if(min > 1) nbmin = @"mins"; else nbmin = @"min"; timeRemaining = [NSString stringWithFormat:@"%@%@ %@%@ %@%@",day ? [NSNumber numberWithInt:day] : @"",nbday,hour ? [NSNumber numberWithInt:hour] : @"",nbhour,min ? [NSNumber numberWithInt:min] : @"00",nbmin]; } else timeRemaining = @"Over"; return timeRemaining;}
34. Icon specified in the Info.plist not found under the top level app wrapper
记住Icon 首字母是大写的,不是icon.png , 是Icon.png
35.
[iphone]Code Sign error: Provisioning profile XXXX can't be foundhttp://www.cnblogs.com/baryon/archive/2010/05/06/1728968.html
http://www.douban.com/note/131009422/
1.关闭你的项目,找到项目文件XXXX.xcodeproj,在文件上点击右键,选择“显示包内容”(Show Package Contents)。会新打开一个Finder。注:其实XXXX.xcodeproj就是一个文件夹,这里新打开的一个Finder里面的三个文件就是该XXXX.xcodeproj文件夹里面的文件。2.在新打开的Finder中找到project.pbxproj,并且打开。在这之中找到你之前的证书的编码信息。我之前报的错误信息是 Code Sign error: Provisioning profile '37D44E7F-0339-4277-9A82-C146A944CD46',所以我用查找的方式找到了所有包括37D44E7F-0339-4277-9A82-C146A944CD46的行,并且删除。 3.保存,重新启动你的项目,再编译。就OK了。
36.获取手机唯一ID
UIDevice *device = [UIDevice currentDevice];//创建设备对象NSString *deviceUID = [[NSString alloc] initWithString:[device uniqueIdentifier]];
NSLog(@"%@",deviceUID); // 输出设备id
37 .动态调用一个类的方法
View Code
NSMethodSignature *signature = [self methodSignatureForSelector:selector];
NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:signature];
[invocation setTarget:self];
[invocation setSelector:selector];
[invocation setArgument:arg atIndex:2];
38.改变NavigationViewController默认动画,让其旋转
navigationController.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
39 .显示和隐藏StatsBar
[[UIApplication sharedApplication] setStatusBarHidden:NO withAnimation:UIStatusBarAnimationNone];
启动隐藏StatusBar info.plist 添加 Status bar is initially hidden 为bool Yes
40 . 点击某个cell的按钮,收藏到tabbar里
http://*.com/questions/5926554/get-uitableviewcell-position-from-visible-area-or-window
41. CoreText用文字填充不规则图形
CGContextRef context = UIGraphicsGetCurrentContext();
// Flip the coordinate system
CGContextSetTextMatrix(context, CGAffineTransformIdentity);
CGContextTranslateCTM(context, 0, self.bounds.size.height);
CGContextScaleCTM(context, 1.0, -1.0);
// Create a path to render text in
CGMutablePathRef path = CGPathCreateMutable();
CGPathAddRect(path, NULL, self.bounds );
// An attributed string containing the text to render
NSAttributedString* attString = [[NSAttributedString alloc]
initWithString:...];
// Create a path to wrap around
CGMutablePathRef clipPath = CGPathCreateMutable();
CGPathAddEllipseInRect(clipPath, NULL, CGRectMake(200, 200, 300, 300) );
// A CFDictionary containing the clipping path
CFStringRef keys[] = { kCTFramePathClippingPathAttributeName };
CFTypeRef values[] = { clipPath };
CFDictionaryRef clippingPathDict = CFDictionaryCreate(NULL,
(const void **)&keys, (const void **)&values,
sizeof(keys) / sizeof(keys[0]),
&kCFTypeDictionaryKeyCallBacks,
&kCFTypeDictionaryValueCallBacks);
// An array of clipping paths -- you can use more than one if needed!
NSArray *clippingPaths = [NSArray arrayWithObject:(NSDictionary*)clippingPathDict];
// Create an options dictionary, to pass in to CTFramesetter
NSDictionary *optionsDict = [NSDictionary dictionaryWithObject:clippingPaths forKey:(NSString*)kCTFrameClippingPathsAttributeName];
// Finally create the framesetter and render text
CTFramesetterRef framesetter = CTFramesetterCreateWithAttributedString((CFAttributedStringRef)attString); //3
CTFrameRef frame = CTFramesetterCreateFrame(framesetter,
CFRangeMake(0, [attString length]), path, optionsDict);
CTFrameDraw(frame, context);
// Clean up
CFRelease(frame);
CFRelease(path);
CFRelease(framesetter);
http://amyworrall.com/post/11098565269/text-wrap-with-core-text
42 . Animation开始和结束callback
UIView
- (void)animateStuff {
[UIView beginAnimations:@"animationName" context:nil];[UIView setAnimationDelegate:self];
[self.view doWhatever];
[UIView commitAnimations];
}
- (void)animationDidStop:(NSString *)animationID finished:(NSNumber *)finished context:(void *)context {
if ([finished boolValue]) {
NSLog(@"Animation Done!");
}
CoreAnimation
CABasicAnimation *anim = [CABasicAnimation animationWithKeyPath:@"position"];
anim.delegate = self;-(void)animationDidStop:(CAAnimation *)anim finished:(BOOL)flag
{
}
43 .UITableView无法接受Touchbegin问题
在UITableViewCell里去实现Touchebegin.
44. ImagePickerView不显示Perview,同时显示自己的coverView一定要设置属性showsCameraControls=NO;
picker.allowsEditing = NO;
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingImage:(UIImage *)img editingInfo:(NSDictionary *)editInfo
{
//do whatever
[self dismissModalViewControllerAnimated:YES];
}