ios 各种技术
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
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
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