ios 工作总结的一些常用难记的点
1.nav1.navigationBar.barStyle=UIBarStyleBlack;
//改变导航栏背景颜色系统模式(背景黑色,标题白色);
2.1延时1.2秒执行方法
[self performSelector:@selector(gotoBack) withObject:nil afterDelay:1.2];
2. //设置选项栏项选中和不选中状态下的两张图片
nav1.tabBarItem.image= [[UIImageimageNamed:@"tabbar_mainframe@2x.png"]imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
nav1.tabBarItem.selectedImage= [[UIImageimageNamed:@"tabbar_mainframeHL@2x.png"]imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
//设置选项栏项文字选中和不选中的显示状态(颜色或是大小)
[nav1.tabBarItemsetTitleTextAttributes:dicforState:UIControlStateNormal];
[nav1.tabBarItemsetTitleTextAttributes:selectDicforState:UIControlStateSelected];
//设置选中tabBar选中后图片的颜色额
[self.tabBarsetSelectedImageTintColor:[UIColorwhiteColor]];
//设置tabBar样式
[self.tabBarsetBarStyle:UIBarStyleBlack];
//设置按钮跳转到tabBar的任意一个view
self.tabBarController.selectedViewController=self.tabBarController.viewControllers[1];
3.//导航栏左右按钮图片和文字的颜色(系统自己的图片和文字)
self.navigationController.navigationBar.tintColor= [UIColorwhiteColor];
//UIBarMetricsDefault竖屏格式高度：44
[self.navigationController.navigationBarsetBackgroundImage:[UIImageimageNamed:@"navigationbar.png"]forBarMetrics:UIBarMetricsDefault];
//UIBarMetricsCompact横屏样式高度：32
[self.navigationController.navigationBarsetBackgroundImage:[UIImageimageNamed:@"nav-32.png"]forBarMetrics:UIBarMetricsCompact];
4.//调导航栏标题的的颜色和大小
[self.navigationController.navigationBarsetTitleTextAttributes:@{NSFontAttributeName:[UIFontsystemFontOfSize:18],NSForegroundColorAttributeName:[UIColorblueColor]}];
5.//导航页面的跳转
[self.navigationControllerpushViewController:sevenanimated:YES];
[self.navigationControllerpopToRootViewControllerAnimated:YES];
//self.navigationController.viewControllers找到push过去的页面，并放到数组里面
NSArray*viewController =self.navigationController.viewControllers;
[self.navigationControllerpopToViewController:viewController[2]animated:YES];
#pragma mark -按钮的点击事件
- (void)buttonClick:(UIButton*)button{
//返回任意某一页
//[first, second, third, fourth, fifth]
//[0,1,2,3,4]
//self.navigationController.viewControllers找到push过去的页面，并放到数组里面
NSArray*viewController =self.navigationController.viewControllers;
[self.navigationControllerpopToViewController:viewController[2]animated:YES];
}
6.UINavigation导航
(1)UINavigationBar导航条(2)UINavigationItem导航栏内容
//第一个是共用的设置一个与它非平行界面(就是说用UITabBarController-tabBar.viewControllers=@[nav1,nav2,nav3,nav4];这个加上去的导航栏是平行关系互不影响)第二个是单独设置每个界面
8.//隐藏系统自带的返回按钮,如果设置左按钮，系统自带的返回按钮会被覆盖掉
// [self.navigationItem setHidesBackButton:YES];
9. //整体全局更改title的文字和颜色和大小
NSDictionary*dic =@{NSForegroundColorAttributeName: [UIColorredColor],NSFontAttributeName: [UIFontsystemFontOfSize:17.0]};
[[UINavigationBarappearance]setTitleTextAttributes:dic];
10.UIToolBar工具条
//UIToolBar是导航控制器默认隐藏的工具条
//设置UIToolBar的隐藏状态
11.//图片渲染,图片旋转
imageView.transform=CGAffineTransformRotate(imageView.transform, rotation.rotation);
12.UITableView (表视图)
self.automaticallyAdjustsScrollViewInsets=NO;//每个视图都必须先加这个关闭自动布局
//UITableViewCell
- (UITableViewCell*)tableView:(UITableView*)tableView cellForRowAtIndexPath:(NSIndexPath*)indexPath{
[cell addSubview:lab(imageView……)]直接在行cell任何位置上直接添加上文字或图片
//从复用池里面查找
UITableViewCell*cell = [tableViewdequeueReusableCellWithIdentifier:iden];
//UITableViewCellSelectionStyleNone无选中效果
cell.selectionStyle=UITableViewCellSelectionStyleDefault;
//设置标题头文字
- (NSString*)tableView:(UITableView*)tableView titleForHeaderInSection:(NSInteger)section{
//设置标题尾文字
- (NSString*)tableView:(UITableView*)tableView titleForFooterInSection:(NSInteger)section{
//设置行高：cell的高度：默认44
- (CGFloat)tableView:(UITableView*)tableViewheightForRowAtIndexPath:(NSIndexPath*)indexPath{
//设置标题头的高度
- (CGFloat)tableView:(UITableView*)tableView heightForHeaderInSection:(NSInteger)section{
//设置标题尾的高度
- (CGFloat)tableView:(UITableView*)tableView heightForFooterInSection:(NSInteger)section{
//cell的选中事件
- (void)tableView:(UITableView*)tableView didSelectRowAtIndexPath:(NSIndexPath*)indexPath{
//取消选中效果
[tableViewdeselectRowAtIndexPath:indexPathanimated:YES];
}
//自定义标题头
- (UIView*)tableView:(UITableView*)tableView viewForHeaderInSection:(NSInteger)section{
//自定义标题尾
- (UIView*)tableView:(UITableView*)tableView viewForFooterInSection:(NSInteger)section{
13./*************UIView-层次关系***************/
//添加视图：addSubview
[self.viewaddSubview:view5];
//移除视图：removeFromSuperview
//[view5 removeFromSuperview];
//将某个视图移动到最上面bringSubviewToFront:
[self.viewbringSubviewToFront:view1];
//将某个视图移动到最下面sendSubviewToBack:
[self.viewsendSubviewToBack:view1];
//将某一个视图移动到另一个视图的上面
[self.viewinsertSubview:view1aboveSubview:view3];
//将某一个视图移动到另一个视图的下面
[self.viewinsertSubview:view1belowSubview:view2];
//将某个视图放到指定的位置
//[self.view insertSubview:view1 atIndex:3];
//交换两个视图的位置
[self.viewexchangeSubviewAtIndex:1withSubviewAtIndex:4];
14.
//label添加的按钮想要展示的话需要将clipsToBounds＝YES
//UIView的属性:是否切割多余视图的属性
label.clipsToBounds=YES;
//只有当clipsToBounds＝YES时，label的圆角效果才能出来
label.layer.cornerRadius=20;
//userInteractionEnabled打开用户响应开关的属性当为YES时：可以参与用户响应
只有UILabel和UIImageView默认NO
//只有父视图能够接受用户响应，它上面的子视图才能参与用户响应
label.userInteractionEnabled=YES;
15.View的设置
//变形属性是以中心点为基准的
//变形属性:transform
//大小变形：CGAffineTransformMakeScalewidth*sxheigth*sy
viewTransform.transform=CGAffineTransformMakeScale(10,0.5);
//角度变形：CGAffineTransformMakeRotation
viewTransform.transform=CGAffineTransformMakeRotation(0);//角度实现,大小变形就不会被实现了后面覆盖前面的
//NSStringFromCGPoint将CGPoint类型转成字符串类型
NSLog(@"%@",NSStringFromCGPoint(viewTransform.center));
//圆角设置:layer
//圆角大小:cornerRadius正方形边长的一半为圆
viewLayer.layer.cornerRadius=30;
//边框设置:borderWidth
viewLayer.layer.borderWidth=5;
//设置边框颜色:borderColor默认黑色[UIColor greenColor].CGColor
viewLayer.layer.borderColor= [UIColorgreenColor].CGColor;
viewLayer.layer.borderColor= [[UIColorgreenColor]CGColor];
//是否切割子视图超出圆角的部分:YES:切割掉默认NO:不切割
//如果masksToBounds＝YES阴影效果出不来
viewLayer.layer.masksToBounds=NO;
//阴影
//阴影的透明度：shadowOpacity默认0.0
viewLayer.layer.shadowOpacity=1.0;
//阴影的偏移量:shadowOffset
viewLayer.layer.shadowOffset=CGSizeMake(50,50);
//阴影的颜色:shadowColor
viewLayer.layer.shadowColor= [UIColorblueColor].CGColor;
//阴影角度：shadowRadius带有虚化的效果
viewLayer.layer.shadowRadius=30;
16.动画设置
//获取图片路径:相对路径
//第一个参数：文件的名字
//第二个参数：文件的类型
NSString*path = [[NSBundlemainBundle]pathForResource:@"map"ofType:@"png"];
UIImage*imagePath = [UIImageimageWithContentsOfFile:path];
UIImageView*imageViewPath = [[UIImageViewalloc]initWithFrame:CGRectMake(20,130,200,50)];
imageViewPath.image= imagePath;
/****动画效果相关属性****/
//创建图片数组
//开辟内存空间
NSMutableArray*array = [[NSMutableArrayalloc]initWithCapacity:0];
for(inti =1; i <=12; i ++) {
[arrayaddObject:[UIImageimageNamed:[NSStringstringWithFormat:@"player%d.png",i]]];
}
//设置动画图片，需要接收一个数组，数组里面的类型必须是UIImage类型
imageView.animationImages= array;
//动画时间：数组里面所有的图片转一圈所用时间
imageView.animationDuration=1;
//循环次数：大于0的数：写几就循环几次，结束0:无限循环
imageView.animationRepeatCount=0;
//开始动画
[imageViewstartAnimating];
//按钮点击开始或结束
staticBOOLisAnimation =YES;//static静态变量用过立即释放
if(isAnimation)
{//等价于isAnimation为真(isAnimation==YES)
[imageViewstopAnimating];
isAnimation =NO;
//这时的isAnimation=YES被释放为空,接着
//赋值为NO再次点击按钮时isAnimation=NO;
}
else
{
[imageViewstartAnimating];
isAnimation =YES;
}
//定时器
[NSTimerscheduledTimerWithTimeInterval:0.2target:selfselector:@selector(birdFly:)userInfo:nilrepeats:YES];
17.
#pragma mark -编辑按钮的方法
//如何更改UITableView的编辑状态
//_tableView.editing默认NO
//设置UITableView的编辑状态
[_tableViewsetEditing:!_tableView.editinganimated:YES];
//只有UITableView处于可编辑状态时，才能进行删除、移动等操作
//NO->YES->NO
#pragma mark -刷新按钮的方法
- (void)refreshButtonClick:(UIBarButtonItem*)button
//刷新数据
//reloadData会把UITableView所有的代理方法都会重新执行一次
[_tableViewreloadData];
//更改删除文字
- (NSString*)tableView:(UITableView*)tableView titleForDeleteConfirmationButtonForRowAtIndexPath:(NSIndexPath*)indexPath{
return@"删除";
}
//设置UITableView的编辑类型
- (UITableViewCellEditingStyle)tableView:(UITableView*)tableView editingStyleForRowAtIndexPath:(NSIndexPath*)indexPath{
if(indexPath.section==0) {
//返回删除类型
returnUITableViewCellEditingStyleDelete;
}
//返回新增元素类型
returnUITableViewCellEditingStyleInsert;
}
//单选删除及插入元素对应的方法
- (void)tableView:(UITableView*)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath*)indexPath{
//有关删除元素的方法实现
if(editingStyle ==UITableViewCellEditingStyleDelete) {
//<1>更改数据源
[[_dataArrayobjectAtIndex:indexPath.section]removeObjectAtIndex:indexPath.row];
//<2>删除对应多余的cell
[_tableViewdeleteRowsAtIndexPaths:[NSArrayarrayWithObjects:indexPath,nil]withRowAnimation:UITableViewRowAnimationAutomatic];
}
//有关新增元素的方法实现
if(editingStyle ==UITableViewCellEditingStyleInsert) {
//<1>更改数据源
PersonModel*model = [[PersonModelalloc]init];
model.name=@"我是新来的";
[[_dataArrayobjectAtIndex:indexPath.section]insertObject:modelatIndex:indexPath.row];
//<2>新增一行的cell
[_tableViewinsertRowsAtIndexPaths:@[indexPath]withRowAnimation:UITableViewRowAnimationAutomatic];
}
}
#pragma mark -有关移动元素的方法
- (void)tableView:(UITableView*)tableView moveRowAtIndexPath:(NSIndexPath*)sourceIndexPath toIndexPath:(NSIndexPath*)destinationIndexPath{
//sourceIndexPath原始数据
//destinationIndexPath结果的数据
//<1>保存将要移动的那行cell上面的数据
PersonModel*model = [[_dataArrayobjectAtIndex:sourceIndexPath.section]objectAtIndex:sourceIndexPath.row];
//<2>从原始位置上删除
[[_dataArrayobjectAtIndex:sourceIndexPath.section]removeObject:model];
//<3>放到新的位置上
[[_dataArrayobjectAtIndex:destinationIndexPath.section]insertObject:modelatIndex:destinationIndexPath.row];
[_tableViewreloadData];
}
18.
#pragma mark -系统的编辑按钮的方法
- (void)setEditing:(BOOL)editing animated:(BOOL)animated{
[supersetEditing:editinganimated:animated];
//editingNO->YES->NO
//设置UITableView的编辑状态
[_tableViewsetEditing:editinganimated:YES];//==[_tableView setEditing:!_tableView.editing animated:YES]
[_tableViewsetEditing:editinganimated:YES];
//清空之前选择的元素
[_rubbishArrayremoveAllObjects];************
if(editing) {
[self.navigationItemsetRightBarButtonItem:_rubbishButtonanimated:YES];
}else{
[self.navigationItemsetRightBarButtonItem:nilanimated:YES];
}
}
#pragma mark -一键删除的按钮的方法
- (void)rubbishButtonClick:(UIBarButtonItem*)button{
//清除选中的待删除的数据
[_dataArrayremoveObjectsInArray:_rubbishArray];
//tableView刷新数据
[_tableViewreloadData];
#pragma mark -多选删除的相关方法
//设置编辑类型
- (UITableViewCellEditingStyle)tableView:(UITableView*)tableView editingStyleForRowAtIndexPath:(NSIndexPath*)indexPath{
//如果删除和插入同时返回，就会出现多选删除
returnUITableViewCellEditingStyleDelete|UITableViewCellEditingStyleInsert;
}
//多选删除对应的方法实现
- (void)tableView:(UITableView*)tableView didSelectRowAtIndexPath:(NSIndexPath*)indexPath{
//当tableView处于编辑状态时
if(tableView.editing) {
//将选中的那行cell上面的数据放到将要删除的数组里面
[_rubbishArrayaddObject:[_dataArrayobjectAtIndex:indexPath.row]];
}else{
//当tableView处于不可编辑状态时，爱干嘛干嘛
NSLog(@"hhhh");
}
}
//cell的反选
- (void)tableView:(UITableView*)tableView didDeselectRowAtIndexPath:(NSIndexPath*)indexPath{
if(tableView.editing) {
[_rubbishArrayremoveObject:[_dataArrayobjectAtIndex:indexPath.row]];
}
}
19.搜索
//搜索框
@property(nonatomic,strong)UISearchBar*searchBar;
//搜索控制器
@property(nonatomic,strong)UISearchDisplayController*sdc;
//<5>UISearchBar
//搜索框的大小：全屏的宽*44
//把搜索框放到tableView上面
_tableView.tableHeaderView=_searchBar;
//<6>UISearchDisplayController搜索控制器
//搜索控制器在实例化时会将搜索框与本个控制器关联起来
_sdc= [[UISearchDisplayControlleralloc]initWithSearchBar:_searchBarcontentsController:self];
//UISearchDisplayController本身就存在一个UITableView，这个UITableView也是需要遵守协议和代理，这个tableView只有一段,如果执行这个代理方法的tableView不是我们自己手动创建的，那么他就是UISearchDisplayController管理的那一个tableView并且每个UITableView的代理方法都要判断是不是手动创建的那个if(tableView !=_tableView)
//UISearchDisplayController管理的UITableView的协议代理
_sdc.searchResultsDataSource=self;
_sdc.searchResultsDelegate=self;
//UISearchDisplayController本身又有一个delegate,需要遵守本身的代理方法UISearchDisplayDelegate
_sdc.delegate=self;
if(tableView !=_tableView) {
cell.textLabel.text=_resultArray[indexPath.row];
}else{
cell.textLabel.text=_dataArray[indexPath.section][indexPath.row];
#pragma mark - UISearchDisplayDelegate
//当输入框里面的文字出现改变就执行
- (BOOL)searchDisplayController:(UISearchDisplayController*)controller shouldReloadTableForSearchString:(NSString*)searchString{
//清空之前的搜索结果
[_resultArrayremoveAllObjects];
//searchString输入框里面的文字
for(NSArray*arrin_dataArray) {
for(NSString*strinarr) {
//查找
NSRangerange = [strrangeOfString:searchString];
if(range.length!=0) {
[_resultArrayaddObject:str];
}
}
}
returnYES;
}
20.索引
//设置索引文字颜色:默认蓝色
_tableView.sectionIndexColor= [UIColorredColor];
//设置索引背景条的颜色:默认透明
_tableView.sectionIndexBackgroundColor= [UIColorgrayColor];
//设置点击索引时背景条的颜色:默认透明
_tableView.sectionIndexTrackingBackgroundColor= [UIColorcyanColor];
#pragma mark -索引相关方法
- (NSArray*)sectionIndexTitlesForTableView:(UITableView*)tableView{
NSMutableArray*array = [[NSMutableArrayalloc]initWithCapacity:0];
//搜索小图标
[arrayaddObject:UITableViewIndexSearch];
for(inti ='a'; i <='z'; i ++) {
[arrayaddObject:[NSStringstringWithFormat:@"%c",i]];
}
returnarray;
}
- (NSInteger)tableView:(UITableView*)tableView sectionForSectionIndexTitle:(NSString*)title atIndex:(NSInteger)index{
//index索引的下标
//index能对应到tableView的段
if(index ==0) {
NSLog(@"search");
}
returnindex -1;
}
21.瀑布流
#pragma mark - UIScrollViewDelegate
- (void)scrollViewDidScroll:(UIScrollView*)scrollView{
if(scrollView ==_aTableView) {
_bTableView.contentOffset=_aTableView.contentOffset;
_cTableView.contentOffset=_aTableView.contentOffset;
}elseif(scrollView ==_bTableView){
_aTableView.contentOffset=_bTableView.contentOffset;
_cTableView.contentOffset=_bTableView.contentOffset;
}else{
_aTableView.contentOffset=_cTableView.contentOffset;
_bTableView.contentOffset=_cTableView.contentOffset;
}
}
_bTableView.showsVerticalScrollIndicator=NO;隐藏垂直方向的滚动条
22.解析plist文件Day12;
//找到文件的路径
NSString*path = [[NSBundlemainBundle]pathForResource:@"bookData"ofType:@"plist"];
//plist文件是个数组,里面是字典
//不可变数组接收plist文件
NSArray*array = [NSArrayarrayWithContentsOfFile:path];
for(NSDictionary*dicinarray) {
BookModel*model = [[BookModelalloc]initWithDic:dic];//这个方法在分类里直接调用如下
/************************************************************************************/
- (instancetype)initWithDic:(NSDictionary*)dic
{
if(self=[superinit]) {
[selfsetValuesForKeysWithDictionary:dic];
}
returnself;
}
/************************************************************************************/
[_dataArrayaddObject:model];
}
23.系统的Cell上添加控件
if(cell ==nil) {
cell = [[UITableViewCellalloc]initWithStyle:UITableViewCellStyleDefaultreuseIdentifier:iden];
}
//需要添加else判断,把cell上面的控件清除否则会出现覆盖的情况
else{
//cell.contentView.subviews将cell上面所有的控件放到数组里面
while([cell.contentView.subviewslastObject] !=nil) {
//将最后一个元素移除除去;删除Cell上的控件而不是cell清空
[(UIView*)[cell.contentView.subviewslastObject]removeFromSuperview];
}
}
//将控件添加到cell上面
[cell.contentViewaddSubview:titleLable];
24.自定义Cell上添加控件
//init方法
- (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString*)reuseIdentifier{
self= [superinitWithStyle:stylereuseIdentifier:reuseIdentifier];
if(self) {
//调用creatUI方法
[selfcreatUI];
}
returnself;
}
- (void)creatUI{
}
//内部封装的方法
- (void)textAndImage:(BookModel*)model{
_titleLabel.text= model.title;
_detailLabel.text= model.detail;
_priceLabel.text= model.price;
_iconImageView.image= [UIImageimageNamed:model.icon];
}
25.注册cell不能接收代理传过来的值
//注册cell类：xib类型
[_tableViewregisterNib:[UINibnibWithNibName:@"MyTableViewCell"bundle:nil]forCellReuseIdentifier:@"iden"];
//UITableViewCell的写法
- (UITableViewCell*)tableView:(UITableView*)tableView cellForRowAtIndexPath:(NSIndexPath*)indexPath
{
MyTableViewCell*cell = [tableViewdequeueReusableCellWithIdentifier:@"iden"forIndexPath:indexPath];
BookModel*model =_dataArray[indexPath.row];
cell.titleLabel.text= model.title;
returncell;
}
26.手势Day08
//点击手势
UITapGestureRecognizer*tap
//移动手势
UIPanGestureRecognizer*pan
//添加到视图上面
[imageViewaddGestureRecognizer:pan];
#pragma mark -移动手势的方法
- (void)pan:(UIPanGestureRecognizer*)pan{
//手势的生命：began - changed - ended
//判断手势的状态:state
if(pan.state==UIGestureRecognizerStateBegan|| pan.state==UIGestureRecognizerStateChanged) {
//1、找到手势所在的view
UIImageView*imageView = (UIImageView*)pan.view;
//2、获取手势移动的位移
CGPointpoint = [pantranslationInView:self.view];
//3、更改imageView的位置
imageView.center=CGPointMake(imageView.center.x+ point.x, imageView.center.y+ point.y);
//4、手势的位移是会叠加的，需要把手势移动的位移归零
//CGPointZero == CGPointMake(0,0)
[pansetTranslation:CGPointZeroinView:self.view];
}
}
//缩放手势
UIPinchGestureRecognizer*pinch
//旋转手势
UIRotationGestureRecognizer*rotation
27,动画,视频,音频Day08TomCat
28. scrollView,UIPageControlDay09
//更改UIScrollView的偏移量
[UIViewanimateWithDuration:0.5animations:^{
scrollView.contentOffset=CGPointMake(self.view.frame.size.width* i,0);
}];
29.UITextView
//特有属性
//是否可以滚动
textView.scrollEnabled=YES;
//隐藏滑块
textView.showsVerticalScrollIndicator=NO;
//是否链接网址、电话、日期、地址
textView.dataDetectorTypes=UIDataDetectorTypeAll;
30.
//这个方法可以改变TableViewCell的背景颜色
cell.contentView.backgroundColor= [UIColorbrownColor];
31.
//删除多余的Cell
[_tableViewdeleteRowsAtIndexPaths:@[indexPath]withRowAnimation:UITableViewRowAnimationAutomatic];
32.永久性传值
1.存值
//NSUserDefaults用于永久性存值的一种方式;
//整个工程有且只有一个NSUserDefaults模式：单例plist格式
//NSUserDefaults:key对应valuekey:字符串样式value:NSString、NSArray、NSDictionary、NSData、NSDate、NSURL、NSNumber、BOOL
//NSUserDefaults实例化
NSUserDefaults*user = [NSUserDefaultsstandardUserDefaults];
//添加文件
[usersetObject:textField.textforKey:@"value"];
//执行写入plist的操作，进行实时更新
[usersynchronize];
2.取值
//NSUserDefaults实例化
NSUserDefaults*user = [NSUserDefaultsstandardUserDefaults];
//获取对应key里面的值
NSString*str = [userobjectForKey:@"value"];
3.删除整体
//NSUserDefaults实例化
NSUserDefaults*user = [NSUserDefaultsstandardUserDefaults]
//移除文件
[userremoveObjectForKey:@"value"];
//执行写入plist的操作，进行实时更新
[usersynchronize];
4.删除单个元素
//用来接收的数组,先删除想要去除的元素,再重新存入(相当于把原来存入的值给覆盖了)
[_dataArrayremoveObjectAtIndex:indexPath.row];
NSUserDefaults*user = [NSUserDefaultsstandardUserDefaults];
[usersetObject:_dataArrayforKey:@"user"];
[usersynchronize];
33.
_textField.text.intValue将字符串转成int数字类型;
34.//删除父视图上这个类型的所有元素
//将父视图上的所有元素加到一个数组里面进行遍历
for(UIView*viewinself.view.subviews) {
//从父视图上,判断是不是这个类型的元素
if([viewisKindOfClass:[UICollectionViewCellclass]]) {
//如果是则从父视图上删除
[viewremoveFromSuperview];
}
}
35.json解析的时间转换为当前的时间
NSString*s =@"1445416710";
NSDate*d = [NSDatedateWithTimeIntervalSince1970:[sfloatValue]];
NSDateFormatter*dateformatter=[[NSDateFormatteralloc]init];
[dateformattersetDateFormat:@"yyyy年MM月dd日HH:mm:ss"];
NSString* dateStr=[dateformatterstringFromDate:d];
NSLog(@"%@",dateStr);
36.Unicode转成标准汉字
直接调用方法
- (NSString*)replaceUnicode:(NSString*)unicodeStr
{
NSString*tempStr1 = [unicodeStrstringByReplacingOccurrencesOfString:@"\\u"withString:@"\\U"];
NSString*tempStr2 = [tempStr1stringByReplacingOccurrencesOfString:@"\""withString:@"\\\""];
NSString*tempStr3 = [[@"\""stringByAppendingString:tempStr2]
stringByAppendingString:@"\""];
NSData*tempData = [tempStr3dataUsingEncoding:NSUTF8StringEncoding];
NSString* returnStr = [NSPropertyListSerializationpropertyListFromData:tempDatamutabilityOption:NSPropertyListImmutableformat:NULLerrorDescription:NULL];
NSLog(@"%@",returnStr);
return[returnStrstringByReplacingOccurrencesOfString:@"\\r\\n"withString:@"\n"];
}
37.tableView的cell滑动,显示置顶,删除,或者收藏
- (NSArray *)tableView:(UITableView *)tableView editActionsForRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewRowAction *toTop = [UITableViewRowAction rowActionWithStyle:UITableViewRowActionStyleDestructive title:@"置顶" handler:^(UITableViewRowAction *action, NSIndexPath *indexPath) {
NSLog(@"置顶");
[tableView setEditing:NO animated:YES];
}];
toTop.backgroundColor =[UIColor redColor];
UITableViewRowAction *delege = [UITableViewRowAction rowActionWithStyle:UITableViewRowActionStyleDestructive title:@"删除" handler:^(UITableViewRowAction *action, NSIndexPath *indexPath) {
NSLog(@"删除");
[tableView setEditing:NO animated:YES];
}];
delege.backgroundColor =[UIColor greenColor];
NSArray *arrar = [NSArray arrayWithObjects:toTop,delege, nil];
return arrar;
}
38.tableView的编辑状态下全选,修改每个cell左侧的选择按钮的背景图片 http://www.cocoachina.com/bbs/read.php?tid=248799
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
UITableViewCell * cell = [self.tableView cellForRowAtIndexPath:indexPath];
NSLog(@"%@",cell.subviews);//先看看它的子视图,发现只有一个子视图，叫"
UIView * view1 = cell.subviews[0];
NSLog(@"%@",view1.subviews);/*然后这里你看到它有3个子视图，分别是
">",
"; layer = >",
">"
你一个是你点击了cell之后cell背景变成淡蓝色的背景view，第二个是cell里面常用的contentView，cell的textLabel就是放在这里面的，第三个就是我们要找的，其实这些都是摸索的，我是把第三个view取到，然后把它颜色设成红色，你就会看到那个蓝色的图标就在这个红色区域里，所以可以确定蓝色图标是这个view的子视图，所以从这里继续想下取*/
UIView * CellEditControl = view1.subviews[2];//按输出顺序来，就是这样向下查找，知道找到你想要的那个view
UIImageView * imgView = [[[[cell.subviews[0] subviews] objectAtIndex:2] subviews] objectAtIndex:0];
UIImageView * testImgView = [[UIImageView alloc]initWithImage:imgView.image];
testImgView.frame = CGRectMake(60, 0, 30, 25);
[cell.contentView addSubview:testImgView];
39.键盘顶端颜色,文字的修改
textField2.attributedPlaceholder=[[NSAttributedStringalloc]initWithString:[[TitleUtilitysharedInstance]getTitleWithKey:@"Password"]attributes:@{NSForegroundColorAttributeName: color}];
40.获取view的名字
[NSStringstringWithUTF8String:object_getClassName(smallView)
41.删除navgationBar最下面的黑色分割线(UIImageView)
UIImageView*imgV = [self.navigationController.navigationBar.subviews[0]subviews][0];
imgV.hidden=YES;
42.cell右边标志符的颜色改变
self.accessoryType = UITableViewCellAccessoryCheckmark;
self.tintColor = [UIColor colorWithRed:140.0/255.0 green:197.0/255.0blue:66.0/255.0alpha:1];
42.slider滑块固定大小分段滑动
/************分段滑动的方法*****************/
//// These number values represent each slider position
//numbers = @[@(500), @(1000), @(1500), @(2000), @(2600)];
//// slider values go from 0 to the number of values in your numbers array
//NSInteger numberOfSteps = ((float)[numbers count] - 1);
//slider.maximumValue = numberOfSteps;
//slider.minimumValue = 0;
//
//// As the slider moves it will continously call the -valueChanged:
//slider.continuous = NO; // NO makes it call only once you let go
//[slider addTarget:self
//action:@selector(valueChanged:)
//forControlEvents:UIControlEventValueChanged];
//}
//- (void)valueChanged:(UISlider *)sender {
//// round the slider position to the nearest index of the numbers array
//NSUInteger index = (NSUInteger)(slider.value + 0.5);
//[slider setValue:index animated:YES];
//NSNumber *number = numbers[index]; // <-- This numeric value you want
//NSLog(@"sliderIndex: %i", (int)index);
//NSLog(@"number: %@", number);
//}
/************分段滑动的方法*****************/
43.cell高度自适应
CGSizelabel2Size = [[_dataDicobjectForKey:@"skill"]boundingRectWithSize:sizeoptions:(NSStringDrawingUsesLineFragmentOrigin|NSStringDrawingUsesFontLeading)attributes:@{NSFontAttributeName:[UIFontsystemFontOfSize:14.0],NSForegroundColorAttributeName:[UIColorblackColor]}context:nil].size;
CGRectframe = [stringboundingRectWithSize:CGSizeMake(WIDTH-15,CGFLOAT_MAX)options:NSStringDrawingUsesLineFragmentOriginattributes:@{NSFontAttributeName:[UIFontsystemFontOfSize:17]}context:nil];
44.cell单个刷新
//一个section刷新
NSIndexSet *indexSet=[[NSIndexSet alloc]initWithIndex:2];
[tableview reloadSections:indexSet withRowAnimation:UITableViewRowAnimationAutomatic];
//一个cell刷新
NSIndexPath *indexPath=[NSIndexPath indexPathForRow:3 inSection:0];
[tableView reloadRowsAtIndexPaths:[NSArray arrayWithObjects:indexPath,nil] withRowAnimation:UITableViewRowAnimationNone];
45.绘制虚线
+ (void)drawDashLine:(UIView*)lineView lineLength:(int)lineLength lineSpacing:(int)lineSpacing lineColor:(UIColor*)lineColor
{
CAShapeLayer*shapeLayer = [CAShapeLayerlayer];
[shapeLayersetBounds:lineView.bounds];
[shapeLayersetPosition:CGPointMake(CGRectGetWidth(lineView.frame) /2,CGRectGetHeight(lineView.frame))];
[shapeLayersetFillColor:[UIColorclearColor].CGColor];
//设置虚线颜色为blackColor
[shapeLayersetStrokeColor:lineColor.CGColor];
//设置虚线宽度
[shapeLayersetLineWidth:CGRectGetHeight(lineView.frame)];
[shapeLayersetLineJoin:kCALineJoinRound];
//设置线宽，线间距
[shapeLayersetLineDashPattern:[NSArrayarrayWithObjects:[NSNumbernumberWithInt:lineLength], [NSNumbernumberWithInt:lineSpacing],nil]];
//设置路径
CGMutablePathRefpath =CGPathCreateMutable();
CGPathMoveToPoint(path,NULL,0,0);
CGPathAddLineToPoint(path,NULL,CGRectGetWidth(lineView.frame),0);
[shapeLayersetPath:path];
CGPathRelease(path);
//把绘制好的虚线添加上来
[lineView.layeraddSublayer:shapeLayer];
}
46.文字复制到粘帖版
UIPasteboard*pasteboard = [UIPasteboardgeneralPasteboard];
pasteboard.string=@“要复制的文字”;
46.文字做富文本
//做富文本
NSMutableAttributedString*attributedText2 =[[NSMutableAttributedStringalloc]initWithString:_weightLab.textattributes:@{NSForegroundColorAttributeName: [UIColorgrayColor]}];
//range为只更改你选中的区域
[attributedText2setAttributes:@{NSForegroundColorAttributeName: [UIColorblackColor]}range:NSMakeRange(0,2)];
_weightLab.attributedText= attributedText2;
[selfaddSubview:_weightLab];
46.cell改变选中颜色背景图片分割线的颜色
1.系统默认的颜色设置
//无色
cell.selectionStyle = UITableViewCellSelectionStyleNone;
//蓝色
cell.selectionStyle = UITableViewCellSelectionStyleBlue;
//灰色
cell.selectionStyle = UITableViewCellSelectionStyleGray;
2.自定义颜色和背景设置
3.改变UITableViewCell选中时背景色：
UIColor *color = [[UIColoralloc]initWithRed:0.0green:0.0blue:0.0alpha:1];//通过RGB来定义自己的颜色
cell.selectedBackgroundView = [[[UIView alloc] initWithFrame:cell.frame] autorelease];
cell.selectedBackgroundView.backgroundColor = [UIColor xxxxxx];
3.自定义UITableViewCell选中时背景
cell.selectedBackgroundView = [[[UIImageView alloc] initWithImage:[UIImage imageNamed:@"cellart.png"]] autorelease];
还有字体颜色
cell.textLabel.highlightedTextColor = [UIColor xxxcolor]; [cell.textLabel setTextColor:color]
4.设置tableViewCell间的分割线的颜色
[theTableView setSeparatorColor:[UIColor xxxx ]];
47.collection的cell重排编组
//长按手势
_longPress = [[UILongPressGestureRecognizer alloc]initWithTarget:selfaction:@selector(lonePressMoving:)];
[self.xtCollectionViewaddGestureRecognizer:_longPress];
- (void)lonePressMoving:(UILongPressGestureRecognizer *)longPress
{
switch(_longPress.state) {
caseUIGestureRecognizerStateBegan: {
{
NSIndexPath*selectIndexPath = [self.xtCollectionViewindexPathForItemAtPoint:[_longPress locationInView:self.xtCollectionView]];
//找到当前的cell
XTCollectCell *cell = (XTCollectCell *)[self.xtCollectionViewcellForItemAtIndexPath:selectIndexPath];
//定义cell的时候btn是隐藏的,在这里设置为NO
[cell.btnDeletesetHidden:NO];
[_xtCollectionView beginInteractiveMovementForItemAtIndexPath:selectIndexPath];
}
break;
}
caseUIGestureRecognizerStateChanged: {
[self.xtCollectionViewupdateInteractiveMovementTargetPosition:[longPress locationInView:_longPress.view]];
break;
}
caseUIGestureRecognizerStateEnded: {
[self.xtCollectionViewendInteractiveMovement];
break;
}
default: [self.xtCollectionViewcancelInteractiveMovement];
break;
}
}
- (void)collectionView:(UICollectionView *)collectionView moveItemAtIndexPath:(nonnull NSIndexPath *)sourceIndexPath toIndexPath:(nonnull NSIndexPath *)destinationIndexPath
{
NSIndexPath *selectIndexPath = [self.xtCollectionView indexPathForItemAtPoint:[_longPress locationInView:self.xtCollectionView]];
//找到当前的cell
XTCollectCell *cell = (XTCollectCell *)[self.xtCollectionView cellForItemAtIndexPath:selectIndexPath];
[cell.btnDelete setHidden:YES];
[self.array exchangeObjectAtIndex:sourceIndexPath.item withObjectAtIndex:destinationIndexPath.item];
[self.xtCollectionView reloadData];
}
48.设置启动页的时间
[NSThread sleepForTimeInterval:3.0];//设置启动页面时间
49.数字用逗号隔开每3位
+(NSString*)countNumAndChangeformat:(NSString*)num
{
intcount =0;
longlonginta = num.longLongValue;
while(a !=0)
{
count++;
a /=10;
}
NSMutableString*string = [NSMutableStringstringWithString:num];
NSMutableString*newstring = [NSMutableStringstring];
while(count >3) {
count -=3;
NSRangerang =NSMakeRange(string.length-3,3);
NSString*str = [stringsubstringWithRange:rang];
[newstringinsertString:stratIndex:0];
[newstringinsertString:@","atIndex:0];
[stringdeleteCharactersInRange:rang];
}
[newstringinsertString:stringatIndex:0];
returnnewstring;
}
50.修改searchBar取消按钮的文字和颜色
- (void)searchBarTextDidBeginEditing:(UISearchBar*)searchBar{
searchBar.showsCancelButton=YES;
NSLog(@"%@",[searchBarsubviews]);
[(UIButton*)searchBar.subviews[0]setTintColor:[UIColorwhiteColor]];
for(UIView*viewin[[[searchBarsubviews]objectAtIndex:0]subviews]) {
if([viewisKindOfClass:[NSClassFromString(@"UINavigationButton")class]]) {
NSLog(@"%@",view.subviews);
UIButton* cancel =(UIButton*)view;
[cancelsetTitle:[[TitleUtilitysharedInstance]getTitleWithKey:@"alertCancel"]forState:UIControlStateNormal];
}
}
}
51.程序自动关闭
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(2*NSEC_PER_SEC)),dispatch_get_main_queue(), ^{
[theViewremoveFromSuperview];
exit(0);
});
52.数组元素按字母排序
_enStateArr= [_stateDicallKeys];
_enStateArr= [_enStateArrsortedArrayUsingComparator:^NSComparisonResult(idobj1,idobj2){
NSComparisonResultresult = [obj1compare:obj2];
returnresult==NSOrderedDescending;
}];
53.控件的晃动
#import
-(void)loadShakeAnimationForView:(UIView*)view
{
CALayer*lbl = [viewlayer];
CGPoint posLbl = [lblposition];
CGPoint y = CGPointMake(posLbl.x-10, posLbl.y);
CGPoint x = CGPointMake(posLbl.x+10, posLbl.y);
CABasicAnimation* animation = [CABasicAnimationanimationWithKeyPath:@"position"];
[animationsetTimingFunction:[CAMediaTimingFunction
functionWithName:kCAMediaTimingFunctionEaseInEaseOut]];
[animationsetFromValue:[NSValuevalueWithCGPoint:x]];
[animationsetToValue:[NSValuevalueWithCGPoint:y]];
[animationsetAutoreverses:YES];
[animationsetDuration:0.08];
[animationsetRepeatCount:3];
[lbladdAnimation:animationforKey:nil];
}
54.判断字符串中是否包含某个字符
//判断字符是否包含某字符串；
NSString*string =@"hello,shenzhen,martin";
//字条串是否包含有某字符串
if([string rangeOfString:@"martin"].location ==NSNotFound) {
NSLog(@"string不存在martin");
}else{
NSLog(@"string包含martin");
}
//字条串开始包含有某字符串
if([string hasPrefix:@"hello"]) {
NSLog(@"string包含hello");
}else{
NSLog(@"string不存在hello");
}
//字符串末尾有某字符串；
if([string hasSuffix:@"martin"]) {
NSLog(@"string包含martin");
}else{
NSLog(@"string不存在martin");
}
在iOS8以后，还可以用下面的方法来判断是否包含某字符串：
//在iOS8中你可以这样判断
NSString*str =@"hello world";
if([str containsString:@"world"]) {
NSLog(@"str包含world");
}else{
NSLog(@"str不存在world");
}
50.//去掉返回手势
//去掉返回按钮
self.navigationItem.leftBarButtonItem= [[UIBarButtonItemalloc]initWithTitle:@""style:(UIBarButtonItemStyleDone)target:selfaction:nil];
//去掉返回手势
if([self.navigationControllerrespondsToSelector:@selector(interactivePopGestureRecognizer)]) {
self.navigationController.interactivePopGestureRecognizer.enabled=NO;
}
51.字典转换成字符串
- (NSString*)parseParams:(NSDictionary*)params{
NSString*keyValueFormat;
NSMutableString*result = [NSMutableStringnew];
NSMutableArray*array = [NSMutableArraynew];
//实例化一个key枚举器用来存放dictionary的key
NSEnumerator*keyEnum = [paramskeyEnumerator];
idkey;
inti=0;
while(key = [keyEnumnextObject]) {
if(i==0) {
keyValueFormat = [NSStringstringWithFormat:@"%@=%@",key,[paramsvalueForKey:key]];
}else
{
keyValueFormat = [NSStringstringWithFormat:@"&%@=%@",key,[paramsvalueForKey:key]];
}
//NSLog(@"%@",keyValueFormat);
[resultappendString:keyValueFormat];
[arrayaddObject:keyValueFormat];
i++;
}
returnresult;
}
52.按钮文字居左
button.contentHorizontalAlignment = UIControlContentHorizontalAlignmentLeft;这行代码，把按钮的内容（控件）
的对齐方式修改为水平左对齐，但是这们会紧紧靠着左边，不好看，
所以我们还可以修改属性：
button.titleEdgeInsets = UIEdgeInsetsMake(0, 10, 0, 0);
这行代码可以让按钮的内容（控件）距离左边10个像素，这样就好看多了
53.Xcode8内部自动集成了VVDocumenter
Xcode8注释快捷键为option＋command＋／
54.四舍五入
-(float)roundFloat:(float)price{
return(floorf(price*100+0.5))/100;
}
55.两个时间比较大小
/************
日期格式请传入：2013-08-05 12:12:12；如果修改日期格式，比如：2013-08-05，则将[df setDateFormat:@"yyyy-MM-dd HH:mm:ss"];修改为[df setDateFormat:@"yyyy-MM-dd"];
***********/
+(int)compareDate:(NSString*)date01 withDate:(NSString*)date02{
intci;
NSDateFormatter*df = [[NSDateFormatteralloc]init];
[dfsetDateFormat:@"yyyy-MM-dd HH:mm:ss"];
NSDate*dt1 = [[NSDatealloc]init];
NSDate*dt2 = [[NSDatealloc]init];
dt1 = [dfdateFromString:date01];
dt2 = [dfdateFromString:date02];
NSComparisonResultresult = [dt1compare:dt2];
switch(result)
{
//date02比date01大
caseNSOrderedAscending: ci=1;break;
//date02比date01小
caseNSOrderedDescending: ci=-1;break;
//date02=date01
caseNSOrderedSame: ci=0;break;
default:NSLog(@"erorr dates %@, %@", dt2, dt1);break;
}
returnci;
}
56.修改输入框提示文字的颜色
UIColor *color = [UIColor whiteColor];
userNameTextField.attributedPlaceholder = [[NSAttributedString alloc]
initWithString:@"请输入手机号"
attributes:@{NSForegroundColorAttributeName : color}];
