1.NSlog 发布后不打印
#ifdef DEBUG// 如果有DEBUG这个宏就编译下面一句代码
#define DDLog(...) NSLog(__VA_ARGS__)
#else // 如果没有DEBUG这个宏就编译下面一句代码
#define DDLog(...)
#endif
2.三方库及其他整理
用过的三方库：
1.AFNetworking HTTP 网络请求库
2.SDWebImage 图片缓存
3.MBProgressHUD 加载中展示
4.MMDrawerController 抽屉视图（自己也可以模仿再重写）
5.FMDB sqlite
6.MJRefresh tableview 下拉刷新上拉加载
7.WebViewJavascriptBridge 实现OC与JS交互
8.SBJSON json解析
9.MJExtension 模型转换
10.SVPullToRefresh scrollview 上加下拉刷新
11.Masonry/SnapKit 自适应布局 （类安卓的相对布局，由于本人1年安卓2年iOS 用起来挺顺手）
12.AFPopupView 实现炫酷的跳转
13.AwesomeMenu 实现炫酷工具栏效果
14.MJPhotoBrowser 实现图片浏览效果，有个导致crash的bug，之后会更
15.ZXingObjC 二维码
16.MKNetworkKit 轻量级HTTP 网络请求库
17.jpush 推送
18.alipay 支付宝支付
19.微信支付
20.友盟 分享、三方登陆、推送、数据记录、crash记录
21.iCarousel 实现Coverflow效果。
22.SDCycleScrollView 无限轮播器
没有过的：
1.JSPatch js脚本更新线上代码（应急用）
2.CocoaPod 三方库的管理工具
3.更新Xcode后，三方插件不能用的解决方法
1.在终端中输入 defaults read /Applications/Xcode.app/Contents/Info DVTPlugInCompatibilityUUID 会得到一串码即本版本xocde的UUID，复制留用。
2.前往文件夹~/Library/Application Support/Developer/Shared/Xcode/Plug-ins/
这个插件目录是所谓的插件目录，找到相应的插件，右击显示报内容，打开里面的info.plist,找到DVTPlugInCompatibilityUUIDs 字段，将操作 1 中得到的UUID 添加到此处即可。重启xcode就可以使用了
4.获取带毫秒的NSDate
NSDateFormatter *dateFormatter = [[NSDateFormatteralloc] init];
[dateFormatter setDateStyle:NSDateFormatterMediumStyle];
[dateFormatter setTimeStyle:NSDateFormatterShortStyle];
//[dateFormatter setDateFormat:@"hh:mm:ss"]
[dateFormatter setDateFormat:@"yyyy-MM-dd HH:mm:ss.SSS"];
NSLog(@"-------0Date%@", [dateFormatter stringFromDate:[NSDate date]]);
5.WebViewJavascriptBridge的使用
转载2015-07-07 16:21:25
1.初始化一个webview（viewdidload）
@property (nonatomic, strong) WebViewJavascriptBridge *mainbridge;
UIWebView* webView = [[UIWebView alloc] initWithFrame:self.view.bounds];
[self.view addSubview:webView];
2.将此webview与WebViewJavascriptBridge关联（viewdidload）
[WebViewJavascriptBridgeenableLogging];
self.mainbridge = [WebViewJavascriptBridgebridgeForWebView:weakSelf webViewDelegate:(WVJB_WEBVIEW_DELEGATE_TYPE*)weakSelf.delegatehandler:^(id data, WVJBResponseCallback responseCallback) {
根据data 就可以判断了
}
（3）oc给js传值（通过 response接受返回值 ）
[mainbridge send:@"A string sent from ObjC before Webview has loaded."responseCallback:^(id responseData) {
NSLog(@"objc got response! %@", responseData);
}];
6.swift 中AnyObject 转string 转 array
从json数组取得AnyObject 类型的anyData
var anyData: AnyObject! = resultDic.objectForKey("wxts1")
转string
var Datatext: String! = String(stringInterpolationSegment: anyData)
转array
1. let DataArray: AnyObject! = anyData
2. var DataArray:NSArray = (anyData as! NSArray) asArray
7.在swift中使用oc库
只要用到的是个.h 文件
1.先创建一个.h文件，可命名为Bridging-Header.h
2.在build setting 中找到Object-C Bridging Header 中添加Bridging-Header.h 的相对路径
3.在Bridging-Header.h 中引入锁需的三方库或者oc类 如：#import"AFNetworking.h"
8.NSString 打印为(null)，为空判断
NSString* remain_delivery_day = [resultDic objectForKey:@"remain_delivery_day"]
服务器返回为空的话remain_delivery_day便会输出（null），
发现remain_delivery_day isKindOfClass:[NSNull class]、[remain_delivery_day isEqualToString:@"(null)"] 都不可判断其为空，＝＝nil也不行
解决方案最常用的是remain_delivery_day length]==0
还有[remain_delivery_day isEqual:[NSNullnull]]
其实明白：nil是一个对象指针为空，Nil是一个类指针为空，NULL是基本数据类型为空。区别就是nil是一个对象，而NULL只是一个值 看这个问题就不是那么难了
9.放大一个imageview
#define CONST_animation_time 0.5
#define CONST_enlarge_proportion 15.0
CGPoint UpPointOfView(UIView *view)
{
return (CGPoint){view.center.x, 200+2+55/2};
};
- (void) circleAnimate:(UIImageView*)view
{
CGContextRef context = UIGraphicsGetCurrentContext();
[UIView beginAnimations:nil context:context];
[UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
[UIView setAnimationDuration:CONST_animation_time];
[view setCenter:UpPointOfView(view)];
CABasicAnimation *scalingAnimation = (CABasicAnimation *)[view.layer animationForKey:@"scaling"];
if (!scalingAnimation)
{
scalingAnimation = [CABasicAnimation animationWithKeyPath:@"transform"];
scalingAnimation.repeatCount=1;
scalingAnimation.duration=CONST_animation_time;
scalingAnimation.autoreverses=NO;
scalingAnimation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseOut];
scalingAnimation.fromValue=[NSValue valueWithCATransform3D:CATransform3DMakeScale(1.0, 1.0, 1.0)];
scalingAnimation.toValue=[NSValue valueWithCATransform3D:CATransform3DMakeScale(CONST_enlarge_proportion,CONST_enlarge_proportion, 1.0)];
}
[view.layer addAnimation:scalingAnimation forKey:@"scaling"];
view.layer.transform = CATransform3DMakeScale(CONST_enlarge_proportion,CONST_enlarge_proportion, 1.0);
[UIView commitAnimations];
}
10.利用手势给图片添加点击事件
UITapGestureRecognizer *singleTap = [[UITapGestureRecognizeralloc]initWithTarget:selfaction:@selector(imageviewclick)];
[imageview addGestureRecognizer:singleTap];//点击图片事件，
imageview.userInteractionEnabled = YES;
11.iOS伪表单上传图片
- (void) imageUpload:(UIImage *) image{
//把图片转换成imageDate格式
NSData *imageData = UIImageJPEGRepresentation(image, 0.5);
//传送路径
NSString *urlString = @"http://www.呃呃呃呃呃.com/ImageUpload/uploadImg";
//建立请求对象
NSMutableURLRequest * request = [[NSMutableURLRequestalloc] init];
//设置请求路径
[request setURL:[NSURLURLWithString:urlString]];
//请求方式
[request setHTTPMethod:@"POST"];
//一连串上传头标签
NSString *boundary = (NSString*)@"---------------------------14737809831466499882746641449";
NSString *contentType = [NSStringstringWithFormat:@"multipart/form-data; boundary=%@",boundary];
[request addValue:contentType forHTTPHeaderField: @"Content-Type"];
NSMutableData *body = [NSMutableDatadata];
[body appendData:[[NSStringstringWithFormat:@"\r\n--%@\r\n",boundary]dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[@"Content-Disposition: form-data; name=\"upfile\"; filename=\"bb\"\r\n"dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[@"Content-Type: application/octet-stream\r\n\r\n"dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[NSDatadataWithData:imageData]];
[body appendData:[[NSStringstringWithFormat:@"\r\n--%@--\r\n",boundary]dataUsingEncoding:NSUTF8StringEncoding]];
[request setHTTPBody:body];
//上传文件开始
//+ (NSData *)sendSynchronousRequest:(NSURLRequest *)request returningResponse:(NSURLResponse **)response error:(NSError **)error;
NSData *returnData = [NSURLConnectionsendSynchronousRequest:requestreturningResponse:nilerror:nil];
//获得返回值
NSString *returnString = [[NSStringalloc] initWithData:returnDataencoding:NSUTF8StringEncoding];
NSData *data = [returnString dataUsingEncoding:NSUTF8StringEncoding];
NSDictionary *resultDic = [NSJSONSerializationJSONObjectWithData:dataoptions:NSJSONReadingMutableLeaveserror:nil];
// NSLog(@"%@",resultDic);
NSString * str11 = [NSStringstringWithFormat:@",%@",[resultDicobjectForKey:@"img_url"]];
[urlImageHeadappendString:str11];
}
12.iOS简单post
NSString *postString = [NSStringstringWithFormat:@" {\\"userName\\":\\"%@\\",\\"userPass\\":\\"%@\\",\\"version\\":\\"1.0\\"}",self.userField.text,self.passwordField.text];
NSLog(@"%@",postString);
//一般转化称UTF-8，这里服务器需要ASCII
NSData* postData = [postStringdataUsingEncoding:NSASCIIStringEncodingallowLossyConversion:YES];
NSMutableURLRequest *request = [[[NSMutableURLRequestalloc] init] autorelease];
[requestsetURL:[NSURLURLWithString:@"http://lib.wap.zol.com.cn/test/login.php"]];
[requestsetCachePolicy:NSURLRequestUseProtocolCachePolicy];
[requestsetTimeoutInterval:100.0];
[request setHTTPMethod:@"POST"];
[request setHTTPBody:postData];
// 应该是application/x-www-form-urlencoded，但对方服务器写成了appliction/x-www-form-urlencoded，告诉服务器是一个表单提交数据方式
[requestsetValue:@"appliction/x-www-form-urlencoded"forHTTPHeaderField:@"Content-Type"];
//得到提交数据的长度
NSString* len = [NSString stringWithFormat:@"%d", [postData length]];
//添加一个http包头告诉服务器数据长度是多少
[requestsetValue:len forHTTPHeaderField:@"Content-Length"];
[NSURLConnectionconnectionWithRequest:request delegate:self];
13.iOS原生json解析
NSData *jsonData = [[NSData alloc] initWithContentsOfFile:JSON_PATH];
NSError *error = nil;
id jsonObject = [NSJSONSerialization JSONObjectWithData:jsonData options:NSJSONReadingAllowFragments error:&error;];
if (jsonObject != nil && error == nil){
NSLog(@"Successfully deserialized...");
if ([jsonObject isKindOfClass:[NSDictionary class]]){
NSDictionary *deserializedDictionary = (NSDictionary *)jsonObject;
NSLog(@"Dersialized JSON Dictionary = %@", deserializedDictionary);
} elseif ([jsonObject isKindOfClass:[NSArray class]]){
NSArray *deserializedArray = (NSArray *)jsonObject;
NSLog(@"Dersialized JSON Array = %@", deserializedArray);
} else {
NSLog(@"An error happened while deserializing the JSON data.");
}
}
14.模仿MBProgressHUD 成功
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:nil
message:[@"Alert"
delegate:nil
cancelButtonTitle:nil//NSLocalizedString(@"OK", @"OK") //
otherButtonTitles:nil];
//[alert setBounds:CGRectMake(alert.bounds.origin.x, alert.bounds.origin.y, alert.bounds.size.width, alert.bounds.size.height+30.0)];
[alert show];
UIActivityIndicatorView *indicator = [[UIActivityIndicatorViewalloc]initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge];
// Adjust the indicator so it is up a few pixels from the bottom of the alert
indicator.center = CGPointMake(alert.bounds.size.width/2, alert.bounds.size.height-40.0);
[indicator startAnimating];
[alert insertSubview:indicator atIndex:0];
[indicator release];
[NSTimer scheduledTimerWithTimeInterval:3.0f
target:self
selector:@selector(dismissAlert:)
userInfo:[NSDictionary dictionaryWithObjectsAndKeys:alert, @"alert", @"testing ", @"key" ,nil] //nil.
repeats:NO];
NSLog(@"release alert");
[alert release];
-(void) dismissAlert:(NSTimer *)timer{
NSLog(@"release timer");
NSLog([[timer userInfo] objectForKey:@"key"]);
UIAlertView* alert = [[timer userInfo] objectForKey:@"alert"];
[alert dismissWithClickeonIndex:0 animated:YES];
}
//
[timer invalidate];
timer = nil;
15.UITableView 滑动到某一行
创建NSIndexPath
NSIndexPath*scrollIndexPath =[NSIndexPath indexPathForRow:10 inSection:0];
自己的tableview开始滚动
[[self tableView] scrollToRowAtIndexPath:scrollIndexPath atScrollPosition:UITableViewScrollPositionTop animated:YES];
16.常用小代码
[[[UIApplication sharedApplication] keyWindow] endEditing:YES];//关闭键盘
取消cell的选中状态cell.selectionStyle = UITableViewCellSelectionStyleNone;
状态栏 [[UIApplication sharedApplication]setStatusBarStyle:UIStatusBarStyleDefault];
self.navigationController.navigationBarHidden = yes;隐藏引导栏
17.关于Unbalanced calls to begin/end appearance transitions for
在自定义的tabbarvc里添加
- (void)viewWillAppear:(BOOL)animated
{
[self.selectedViewController beginAppearanceTransition: YES animated: animated];
}
-(void) viewDidAppear:(BOOL)animated
{
[self.selectedViewController endAppearanceTransition];
}
-(void) viewWillDisappear:(BOOL)animated
{
[self.selectedViewController beginAppearanceTransition: NO animated: animated];
}
-(void) viewDidDisappear:(BOOL)animated
{
[self.selectedViewController endAppearanceTransition];
}
18.CUICatalog: Invalid asset name supplied: (null)
[UIImage imageNamed:name];但是这个name却是空的，所以就报了这个错了。
解决方法，在项目中搜索[UIImage imageNamed:,然后打印看看所谓的name是否为空。找到后替换