工作中小技巧总结(一)

工作中小技巧总结(一)

OC和swift混编

swift调用OC
1、创建一个swift或者oc的工程：我这里是创建的Swift语言的工程，工程名SwiftTest
2、在工程中代码目录下创建一个oc的类，选择oc语言， 会出一个对话框，选择YES
3、这时会在工程里看到下图这样一个头文件  *-Bridging-Header.h
4、在这个头文件里添加你的OC文件的.h文件，就可以在任意swift文件中自行调用所包含的oc文件了。 #import “aaa.h”

OC调用swift
在工程的target-》build Setting->package下个性如下两项
Defines Module 改为YES
Product Module Name的值加上“-swift.h”作为头文件被OC包含

图片拉伸填满

//拉伸填满
+(UIImage *)resizeImageWithImageName:(NSString *)imageName{
UIImage *image=[self imageNamed:imageName];
//从中间开始拉伸
return [image stretchableImageWithLeftCapWidth:image.size.width*0.5 topCapHeight:image.size.height*0.5];
}

改变图片大小

- (UIImage *)scaleToSize:(UIImage *)img size:(CGSize)size{
UIGraphicsBeginImageContext(size);
[img drawInRect:CGRectMake(0, 0, size.width, size.height)];
UIImage* scaledImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return scaledImage;
}

隐藏状态栏

-(BOOL)prefersStatusBarHidden{
return YES;
}

跳转时隐藏tabbar

viewController.hidesBottomBarWhenPushed=YES;

Json和NSString转换

//将json对象装换成json字符串
+(NSString *)coverseObj2JsonStrWithObj:(id)obj{
NSError *error=nil;
NSData *data=[NSJSONSerialization dataWithJSONObject:obj options:0 error:&error];
if(!error){
return [[NSString alloc]initWithData:data encoding:NSUTF8StringEncoding];
}else{
return nil;
}
}
//将json字符串转换成json对象
+(id)converseJsonStr2ObjWithJsonStr:(NSString *)jsonStr{
NSError *error=nil;
NSData *data=[jsonStr dataUsingEncoding:NSUTF8StringEncoding];
id obj =[NSJSONSerialization JSONObjectWithData:data options:0 error:&error];
if(!error){
return obj;
}else{
return nil;
}
}

改变状#改变状态栏的颜色

self.navigationController.navigationBar.barStyle = UIBarStyleBlack;

改变导航栏上左右视图的位置

_weatherView=[[WeatherView alloc]initWithFrame:CGRectMake(0, 0, 45, 50)];
UIBarButtonItem *leftBarButon = [[ UIBarButtonItem alloc ] initWithCustomView :_weatherView];
if(([[[UIDevice currentDevice] systemVersion] floatValue]>=7.0?20:0)){
UIBarButtonItem *negativeSpacer = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace target:nil action:nil];
negativeSpacer.width = -10;//这个数值可以根据情况自由变化
self.navigationItem.leftBarButtonItems = @[negativeSpacer, leftBarButon];
}else{
self.navigationItem.leftBarButtonItem = leftBarButon;
}

AF网络检测

-(void)internet{

[[AFNetworkReachabilityManager sharedManager] startMonitoring];
//设置网络变化回调
[[AFNetworkReachabilityManager sharedManager] setReachabilityStatusChangeBlock:^(AFNetworkReachabilityStatus status) {
switch (status) {

case AFNetworkReachabilityStatusNotReachable:{
NSLog(@"无网络");
break;
}
case AFNetworkReachabilityStatusReachableViaWiFi:{
NSLog(@"WiFi网络");
if (!_weatherView.isLoad) {//如果weather没加载
[_weatherView download];
}
break;
}
case AFNetworkReachabilityStatusReachableViaWWAN:{
NSLog(@"无线网络");
if (!_weatherView.isLoad) {//如果weather没加载
[_weatherView download];
}
break;
}
default:
break;
}
}];
}

AF的接受数据类型设置

manger.responseSerializer.acceptableContentTypes=[NSSet setWithObjects:@"application/json",@"text/html",@"text/plain", nil];

弹簧动画

[UIView animateWithDuration:0.2 delay:0.0 usingSpringWithDamping:1 initialSpringVelocity:0.5 options:UIViewAnimationOptionCurveEaseIn animations:^{
_imageview.transform=CGAffineTransformMakeTranslation(0,-3);
} completion:^(BOOL finished) {
[UIView animateWithDuration:0.5 delay:0.0 usingSpringWithDamping:0.3  initialSpringVelocity:5.0 options:UIViewAnimationOptionCurveLinear animations:^{
_imageview.transform=CGAffineTransformMakeTranslation(0, 0);
} completion:^(BOOL finished) {

}];
}];

判断代理实现代理方法

if(self.delegate&&[self.delegate respondsToSelector:@selector(SignBtnClick: ScoreLabel:)]){
[self.delegate SignBtnClick:_TitleLabel ScoreLabel:_ScoreLabel];
}

tabbar按钮自定义图片

user.tabBarItem.image = [[UIImage imageNamed:@"user"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];

富文本改颜色

NSDictionary *dic =@{NSForegroundColorAttributeName:UIColorFromRGB(0xFE4500),NSFontAttributeName:[UIFont systemFontOfSize:13]};
[home.tabBarItem setTitleTextAttributes:dic forState:UIControlStateSelected];

态栏的颜色

self.navigationController.navigationBar.barStyle = UIBarStyleBlack;

改变导航栏上左右视图的位置

_weatherView=[[WeatherView alloc]initWithFrame:CGRectMake(0, 0, 45, 50)];
UIBarButtonItem *leftBarButon = [[ UIBarButtonItem alloc ] initWithCustomView :_weatherView];
if(([[[UIDevice currentDevice] systemVersion] floatValue]>=7.0?20:0)){
UIBarButtonItem *negativeSpacer = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace target:nil action:nil];
negativeSpacer.width = -10;//这个数值可以根据情况自由变化
self.navigationItem.leftBarButtonItems = @[negativeSpacer, leftBarButon];
}else{
self.navigationItem.leftBarButtonItem = leftBarButon;
}

AF网络检测

-(void)internet{

[[AFNetworkReachabilityManager sharedManager] startMonitoring];
//设置网络变化回调
[[AFNetworkReachabilityManager sharedManager] setReachabilityStatusChangeBlock:^(AFNetworkReachabilityStatus status) {
switch (status) {

case AFNetworkReachabilityStatusNotReachable:{
NSLog(@"无网络");
break;
}
case AFNetworkReachabilityStatusReachableViaWiFi:{
NSLog(@"WiFi网络");
if (!_weatherView.isLoad) {//如果weather没加载
[_weatherView download];
}
break;
}
case AFNetworkReachabilityStatusReachableViaWWAN:{
NSLog(@"无线网络");
if (!_weatherView.isLoad) {//如果weather没加载
[_weatherView download];
}
break;
}
default:
break;
}
}];
}

AF的接受数据类型设置

manger.responseSerializer.acceptableContentTypes=[NSSet setWithObjects:@"application/json",@"text/html",@"text/plain", nil];

弹簧动画

[UIView animateWithDuration:0.2 delay:0.0 usingSpringWithDamping:1 initialSpringVelocity:0.5 options:UIViewAnimationOptionCurveEaseIn animations:^{
_imageview.transform=CGAffineTransformMakeTranslation(0,-3);
} completion:^(BOOL finished) {
[UIView animateWithDuration:0.5 delay:0.0 usingSpringWithDamping:0.3  initialSpringVelocity:5.0 options:UIViewAnimationOptionCurveLinear animations:^{
_imageview.transform=CGAffineTransformMakeTranslation(0, 0);
} completion:^(BOOL finished) {

}];
}];

判断代理实现代理方法

if(self.delegate&&[self.delegate respondsToSelector:@selector(SignBtnClick: ScoreLabel:)]){
[self.delegate SignBtnClick:_TitleLabel ScoreLabel:_ScoreLabel];
}

tabbar按钮自定义图片

user.tabBarItem.image = [[UIImage imageNamed:@"user"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];

富文本改颜色

NSDictionary *dic =@{NSForegroundColorAttributeName:UIColorFromRGB(0xFE4500),NSFontAttributeName:[UIFont systemFontOfSize:13]};
[home.tabBarItem setTitleTextAttributes:dic forState:UIControlStateSelected];

富文本划线

NSString *str=[NSString stringWithFormat:@"¥%.2f",[moudel.lastPrice floatValue]];
NSDictionary *dict=@{NSStrikethroughStyleAttributeName:@(NSUnderlineStyleSingle|NSUnderlinePatternSolid),NSStrikethroughColorAttributeName:[UIColor grayColor]};
NSMutableAttributedString *aStr=[[NSMutableAttributedString alloc]initWithString:str attributes:dict];
_myLastPriceLabel.attributedText=aStr;

重写button上图片和文字的位置

-(CGRect)titleRectForContentRect:(CGRect)contentRect{
return CGRectMake(0, 0, CGRectGetWidth(contentRect)*RATIO, CGRectGetHeight(contentRect));
}
//改变image的位置
-(CGRect)imageRectForContentRect:(CGRect)contentRect{
return CGRectMake(CGRectGetWidth(contentRect)*RATIO, 0, CGRectGetWidth(contentRect)*(1-RATIO), CGRectGetHeight(contentRect));
}

设置导航栏标题

[self.navigationController.navigationBar setTitleTextAttributes:@{NSFontAttributeName:[UIFont systemFontOfSize:24],NSForegroundColorAttributeName:[UIColor magentaColor]}];

把图片存进相册

UIImageWriteToSavedPhotosAlbum(imageview.image, nil, nil, nil);

重绘系统cell图片大小

CGSize itemSize = CGSizeMake(60, 60);
UIGraphicsBeginImageContext(itemSize);
CGRect imageRect = CGRectMake(0.0, 0.0, itemSize.width, itemSize.height);
[cell.imageView.image drawInRect:imageRect];
cell.imageView.image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();

设置cell选中后得背景颜色

cell.selectedBackgroundView=bgView;

隐藏cell分界线

Tableview.separatorStyle=UITableViewCellSeparatorStyleNone;

cell自适应会用重绘

[cell setNeedsDisplay];//将cell标识为需要重绘
[cell layoutIfNeeded];//cell如果需要重绘就重新绘制
tableView.estimatedRowHeight=CGRectGetMaxY(cell.MyCol.frame)+10;//预估算高度
tableView.rowHeight=UITableViewAutomaticDimension;//自适应高度

检测键盘弹出

[[NSNotificationCenter defaultCenter]addObserver:self   selector:@selector()  name:UIKeyboardWillShowNotification  object:nil];