iOS,视图相关

1.移除视图的所以子视图

2.自定义视图(UIView)

3.处理悬浮窗口(类似微信视频)，等比缩放

4.自定义前面视图(可以手写字)

5.图片拉伸的几种方式，计算文本占用空间大小

6.UILable相关

7.UIButton相关

8.UISegmentedControl分段控件

9.UIScrollView相关

10.UISearchController相关

11.UICollectionView相关

12.单元格右侧样式

13.自定义UISlider样式

移除视图的所以子视图

[[self.viewsubviews]makeObjectsPerformSelector:@selector(removeFromSuperview)];

或者

NSArray *viewsToRemove = [self.view subviews];

for (UIView *v in viewsToRemove) {

[v removeFromSuperview];

}

自定义视图(UIView)

//FaceView.m文件
@implementation FaceView

-(id)initWithFrame:(CGRect)frame{

self=[super initWithFrame:frame];

if (self) {

}

return self;

}

//自己实现drawRect方法重绘 ,也可以不实现该方法，自己定义执行界面处理方法执行
-(void) drawRect:(CGRect)rect{ //省略实现。。。

}@end

处理悬浮窗口(类似微信视频)，等比缩放

将要加载的view放在主window上或者根视图控制器上，利用transform将视图等比缩放

下面将一个视图在AppDelegate中处理

FloatingView *view=[[FloatingView alloc] initWithFrame:CGRectMake(50, 50, 200, 200)];

//添加拖动手势，使视图达到悬浮窗的拖动效果

UIPanGestureRecognizer *panGestures=[[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(handlePanGestures:)];

[view addGestureRecognizer:panGestures];

//单击视图手势

UITapGestureRecognizer *tapGestures=[[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(narrowView:)];

[view addGestureRecognizer:tapGestures];

[self.window addSubview:view];

//点击等比缩小视图

-(void)narrowView:(UITapGestureRecognizer *)sender{

//等比缩放视图

sender.view.transform=CGAffineTransformScale(sender.view.transform, 0.5, 0.5);

}

//处理视频视图拖动事件

-(void)handlePanGestures:(UIPanGestureRecognizer *)sender{

if(sender.state!=UIGestureRecognizerStateEnded&&sender.state!=UIGestureRecognizerStateFailed) {

//通过使用 locationInView 这个方法,来获取到手势的坐标

CGPoint location=[sender locationInView:sender.view.superview];

sender.view.center=location;

}

自定义前面视图(可以手写字)

//TouchView.h文件

#import <UIKit/UIKit.h>

@interface TouchView : UIView

@property(nonatomic,strong) NSMutableArray *points,*pointsTem;

@end

//TouchView.m文件

#import "TouchView.h"

@implementation TouchView

- (instancetype)initWithFrame:(CGRect)frame

{

self = [super initWithFrame:frame];

if (self) {

self.backgroundColor=[UIColor whiteColor];

self.points=[[NSMutableArray alloc] init];

}

return self;

}

//设置为单点触控，不支持多点触控

-(BOOL)isMultipleTouchEnabled{

return NO;

}

//开始触摸，创建一个新的pointsTem的array，并记录点

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{

self.pointsTem=[[NSMutableArray alloc] init];

CGPoint pt=[[touches anyObject] locationInView:self];

//将点通过NSValue包装成对象类型

[self.pointsTem addObject:[NSValue valueWithCGPoint:pt]];

[self.points addObject:self.pointsTem];

}

//移动过程中记录各个点

-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event{

CGPoint pt=[[touches anyObject] locationInView:self];

//将点通过NSValue包装成对象类型

[self.pointsTem addObject:[NSValue valueWithCGPoint:pt]];

[self.points addObject:self.pointsTem];

//标志着接收机的整个边界矩形需要重绘,这又会调用drawRect:的调用

[self setNeedsDisplay];

}

//绘制

-(void)drawRect:(CGRect)rect{

if (!self.points) {

return;

}

if (!(self.points.count>0)) {

return;

}

//设置后面绘制线条的颜色

[[UIColor blackColor] set];

//设置Quartz2D的绘制环境

CGContextRef context=UIGraphicsGetCurrentContext();

//图像上下文和线宽设置

CGContextSetLineWidth(context, 4.0f);

NSValue *objectFromArray;

//通过获取array里面的arry实现画多条线

for (int i=0; i<(self.points.count-1); i++) {

if (![self.points objectAtIndex:i]) {

continue;

}

NSMutableArray *pointsTemDraw=[self.points objectAtIndex:i];

if (pointsTemDraw.count<2) {

continue;

}

for (int j=0; j<(pointsTemDraw.count-1); j++) {

objectFromArray=[pointsTemDraw objectAtIndex:j];

CGPoint pt1=[objectFromArray CGPointValue];

objectFromArray=[pointsTemDraw objectAtIndex:(j+1)];

CGPoint pt2=[objectFromArray CGPointValue];

//开始一个新的移动点

CGContextMoveToPoint(context, pt1.x, pt1.y);

//附件一条线到当前点

CGContextAddLineToPoint(context, pt2.x, pt2.y);

//在当前路径画一条线

CGContextStrokePath(context);

}

@end

//上面的方式笔画太多后UI效果跟不上性能太差，下面是新的方式

// TKTouchView.h

// 手势签名

// Created by Vie on 15/8/31.

#import <UIKit/UIKit.h>

@interface TKTouchView : UIView

@property(nonatomic,strong) UIButton *cleanBtn;//清除按钮

@end

// TouchView.m

// DrawImageView

// Created by Vie on 15/8/31.

#import "TKTouchView.h"

@implementation TKTouchView

{

UIBezierPath *beizerPath;

UIImage *incrImage;

CGPoint points[5];

uint control;

}

- (instancetype)initWithFrame:(CGRect)frame

{

self = [super initWithFrame:frame];

if (self) {

self.backgroundColor=[UIColor whiteColor];

float cleanBtnWidth=38;

float cleanBtnHeight=33;

self.cleanBtn=[[UIButton alloc] initWithFrame:CGRectMake(0, self.frame.size.height-cleanBtnHeight-5, cleanBtnWidth, cleanBtnHeight)];

self.cleanBtn.layer.cornerRadius=2.0f;

self.cleanBtn.layer.borderColor=[[UIColor grayColor] CGColor];

self.cleanBtn.layer.borderWidth=0.3f;

[self.cleanBtn setTitle:@"清除" forState:UIControlStateNormal];

[self.cleanBtn.titleLabel setFont:[UIFont fontWithName:@"Helvetica-Bold"size:16.0f]];

[self.cleanBtn setTitleColor:[UIColor grayColor] forState:UIControlStateNormal];

self.cleanBtn.transform=CGAffineTransformMakeRotation(M_PI/2);

[self.cleanBtn addTarget:self action:@selector(cleanAction:) forControlEvents:UIControlEventTouchUpInside];

[self addSubview:self.cleanBtn];

[self setMultipleTouchEnabled:NO];

beizerPath = [UIBezierPath bezierPath];

[beizerPath setLineWidth:4.0];

}

return self;

}

//清除签名

-(void)cleanAction:(UIButton *)sender{

incrImage = nil;

[self setNeedsDisplay];

}

//设置为单点触控，不支持多点触控

-(BOOL)isMultipleTouchEnabled{

return NO;

}

//开始触摸，创建一个新的pointsTem的array，并记录点

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{

control = 0;

UITouch *touch = [touches anyObject];

points[0] = [touch locationInView:self];

CGPoint startPoint = points[0];

CGPoint endPoint = CGPointMake(startPoint.x + 1.5, startPoint.y

+ 2);

[beizerPath moveToPoint:startPoint];

[beizerPath addLineToPoint:endPoint];

}

//移动过程中记录各个点

-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event{

UITouch *touch = [touches anyObject];

CGPoint touchPoint = [touch locationInView:self];

control++;

points[control] = touchPoint;

if (control == 4)

{

points[3] = CGPointMake((points[2].x + points[4].x)/2.0, (points[2].y + points[4].y)/2.0);

[beizerPath moveToPoint:points[0]];

[beizerPath addCurveToPoint:points[3] controlPoint1:points[1] controlPoint2:points[2]];

[self setNeedsDisplay];

points[0] = points[3];

points[1] = points[4];

control = 1;

}

- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event

{

[self drawBitmapImage];

[self setNeedsDisplay];

[beizerPath removeAllPoints];

control = 0;

}

- (void)drawBitmapImage

{

UIGraphicsBeginImageContextWithOptions(self.bounds.size, YES, 0.0);

if (!incrImage)

{

UIBezierPath *rectpath = [UIBezierPath bezierPathWithRect:self.bounds];

[[UIColor whiteColor] setFill];

[rectpath fill];

}

[incrImage drawAtPoint:CGPointZero];

//Set final color for drawing

UIColor *strokeColor = [UIColor redColor];

[strokeColor setStroke];

[beizerPath stroke];

incrImage = UIGraphicsGetImageFromCurrentImageContext();

UIGraphicsEndImageContext();

}

- (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event

{

[self touchesEnded:touches withEvent:event];

}

//绘制

-(void)drawRect:(CGRect)rect{

[incrImage drawInRect:rect];

[beizerPath stroke];

// Set initial color for drawing

UIColor *fillColor = [UIColor redColor];

[fillColor setFill];

UIColor *strokeColor = [UIColor redColor];

[strokeColor setStroke];

[beizerPath stroke];

}

@end

图片拉伸的几种方式，计算文本占用空间大小

*ios4提供的方法：

　　- (UIImage *)stretchableImageWithLeftCapWidth:(NSInteger)leftCapWidth topCapHeight:(NSInteger)topCapHeight

　　这个函数是UIImage的一个实例函数，它的功能是创建一个内容可拉伸，而边角不拉伸的图片，需要两个参数，第一个是不拉伸区域距离左边框的宽度，第二个参数是不拉伸区域距离上边框的宽度，其操作本质是对一个像素的复制拉伸，故没有渐变效果，这也是其缺点所在。

　　参数的意义是，如果参数指定10，5。那么，图片左边10个点，上边5个点。不会被拉伸，x坐标为11的点会被横向复制，y坐标为6的点会被纵向复制。注意：只是对一个点像素进行复制到指定的宽度。

*ios5提供的方法:

　　- (UIImage *)resizableImageCapInsets:(UIEdgeInsets)Insets

　　其中Insets这个参数的格式是(top,left,bottom,right)，从上、左、下、右分别在图片上画了一道线，这样就给一个图片指定了一个矩形区域。只有在框里面的部分才会被拉伸，而框外面的部分则保持改变。比如(20,5,10,5)，意思是下图矩形里面的部分可以被拉伸，而其余部分不变。

*ios6提供的方法：

　　- (UIImage *)resizableImageWithCapInsets:(UIEdgeInsets)capInsets resizingMode:(UIImageResizingMode)resizingMode

　　关于Insets参数，与ios5是相同的，不同的是其后增加了一个拉伸的模式，ios6.0的版本提供了

　　UIImageResizingModeTile和 UIImageResizingModeStretch两种模式，从名字就可以看出，是平铺模式和拉伸模式。平铺就是复制你Insets指定的矩形区域块来填充你所指定的图片区域，而拉伸就是通过拉伸你Insets指定的矩形区域块来填充你所需的图片区域。图片的resize由一个点变成了一个矩形块，这样你的所指定块的渐变效果，也是可以呈现出来的。

示例：float bgImgViewX=self.frame.size.width-90-messageSize.width;

//背影图片

UIImage *bgImg=[UIImage imageNamed:@"send_bg.png"];

self.bgImgView=[[UIImageView alloc] initWithImage:[bgImg resizableImageWithCapInsets:UIEdgeInsetsMake(10, 10, 10, 15) resizingMode:UIImageResizingModeStretch]];

self.bgImgView.frame = CGRectMake(bgImgViewX, 14.0f, messageSize.width+30.0f, messageSize.height+20.0f);

计算文本要占用的空间大小；CGSizeMake(200, 500)是允许最大占范围

CGSize messageSize=[messageText boundingRectWithSize:CGSizeMake(200, 500) options:NSStringDrawingUsesLineFragmentOrigin attributes:@{NSFontAttributeName:[UIFont systemFontOfSize:20.0f]} context:nil].size;

UILable相关

UILable文字增加阴影效果

//文本加阴影

self.messageLable.shadowColor=[UIColor blackColor];

//正数右下角有阴影效果，负数左上角有阴影效果

self.messageLable.shadowOffset=CGSizeMake(0, 1.0);

UIButton相关

设置按钮边框颜色，边框线大小

//设置按钮边框线粗细

[self.twoVideoBtn.layer setBorderWidth:1.0f];

//设置按钮边框颜色

self.twoVideoBtn.layer.borderColor = [[UIColor colorWithRed:193/255.0green:193/255.0 blue:193/255.0 alpha:1] CGColor];

UISegmentedControl分段控件

UISegmentedControl *segmentedControl=[[UISegmentedControl alloc] initWithItems:@[@"One",@"Two",@"Three"]];

//设置默认选中栏，按下标从零开始。

segmentedControl.selectedSegmentIndex=0;

//momentary设置为YES，不显示选择状态

// segmentedControl.momentary=YES;

[segmentedControl addTarget:self action:@selector(changedValue:) forControlEvents:UIControlEventValueChanged];

self.navigationItem.titleView=segmentedControl;

-(void)changedValue:(UISegmentedControl *)sender{

// int x= sender.selectedSegmentIndex;

}

UIScrollView相关

UIScrollView(滚动视图)和UIPageControl(指示器)简单使用

//Test4ViewController.m"文件

#import "Test4ViewController.h"

@interface Test4ViewController ()

@property (strong,nonatomic)UIScrollView *scrollView;

@property (strong,nonatomic)UIPageControl *pageControl;

@end

@implementation Test4ViewController

- (void)viewDidLoad {

[super viewDidLoad];

[self.view setBackgroundColor:[UIColor whiteColor]];

//初始化scrollView视图大小

_scrollView=[[UIScrollView alloc] initWithFrame:CGRectMake(0, self.view.frame.size.height*0.1, self.view.frame.size.width, self.view.frame.size.height*0.8)];

//是否支持分页

_scrollView.pagingEnabled=YES;

//指定控件是否只能在一个方向上滚动(默认为NO)

_scrollView.directionalLockEnabled=YES;

//设置水平指示滚动标不可见

_scrollView.showsHorizontalScrollIndicator = NO;

//设置内容尺寸，内容比视图大即可滑动，什么方向滑动取决于内容什么方向上比视图大

CGSize newSize = CGSizeMake(self.view.frame.size.width * 3, self.view.frame.size.height*0.2);

[_scrollView setContentSize:newSize];

//设置滚动的开始视图

_scrollView.contentOffset = CGPointMake(0, 0);

//设置委托

_scrollView.delegate = self;

[self.view addSubview:_scrollView];

// 初始化 pagecontrol提供一行点来指示当前显示的是多页面视图的哪一页，以便让页面控件看起来更像一个指示器

_pageControl=[[UIPageControl alloc] initWithFrame:CGRectMake(self.view.frame.size.width*0.3, 200, self.view.frame.size.width*0.3, 18)];

//pageControl长度

_pageControl.numberOfPages=3;

//pageControl初始化值

_pageControl.currentPage=0;

//当前页面指示器颜色

[_pageControl setCurrentPageIndicatorTintColor:[UIColor redColor]];

//非当前页面指示器颜色

[_pageControl setPageIndicatorTintColor:[UIColor blackColor]];

[_pageControl addTarget:self action:@selector(changePage:) forControlEvents:UIControlEventValueChanged];

[self.view addSubview:_pageControl];

UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(0, 200, 320, self.view.frame.size.height*0.2)];

label.backgroundColor = [UIColor yellowColor];

label.text = @"学习scrolleview";

[_scrollView addSubview:label];

UILabel *label2 = [[UILabel alloc] initWithFrame:CGRectMake(self.view.frame.size.width, 200, 320, self.view.frame.size.height*0.2)];

label2.backgroundColor = [UIColor yellowColor];

label2.text = @"学习scrolleviewtwo";

[_scrollView addSubview:label2];

UILabel *label3 = [[UILabel alloc] initWithFrame:CGRectMake(self.view.frame.size.width*2, 200, 320, self.view.frame.size.height*0.2)];

label3.backgroundColor = [UIColor yellowColor];

label3.text = @"学习scrolleview333";

[_scrollView addSubview:label3];

}

//开始滚动委托函数

-(void)scrollViewDidScroll:(UIScrollView *)scrollView{

//获取当前视图页面的的x坐标计算下为page值

int page=scrollView.contentOffset.x/(self.view.frame.size.width);

//改变指示器值

self.pageControl.currentPage=page;

}

//结束滚动委托函数

-(void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView{

}

-(void)changePage:(UIPageControl *)sender{

//获取当前页面的page值

int page=sender.currentPage;

//改名scrollView界面

self.scrollView.contentOffset = CGPointMake(self.view.frame.size.width*page, 0);

}

@end

用UIScrollView实现，tableView的cell左侧滑动

效果图：

//SlideTableViewController.h文件

#import <UIKit/UIKit.h>

@interface SlideTableViewController : UIViewController<UITableViewDataSource,UITableViewDelegate>

@property (strong,nonatomic) NSMutableArray *tbArray;//数据

@property (strong,nonatomic) UIScrollView *myScrollView;//用于记住滑动完成的scrollView

@end

//SlideTableViewController.m文件

#import "SlideTableViewController.h"

@implementation SlideTableViewController

- (void)viewDidLoad {

[super viewDidLoad];

[self.view setBackgroundColor:[UIColor whiteColor]];

//创建视图

UITableView *uiTable=[[UITableView alloc] initWithFrame:self.view.frame];

//分割线颜色

uiTable.separatorColor=[UIColor lightGrayColor];

[uiTable.layer setCornerRadius:5.0];

//完成布局

[self.view addSubview:uiTable];

uiTable.dataSource=self;

uiTable.delegate=self;

self.tbArray=[[NSMutableArray alloc] initWithObjects:@"风继续吹",@"真的爱你",@"透明的你",@"爱的太迟",@"Dear friends",@"永远不回头",@"突然想起你",@"遥远的他",@"一颗滚石",@"真的爱你", nil];

}

//指定每个分区的单元格数量

-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{

return [self.tbArray count];

}

//设置单元格

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{

static NSString *cellDo=@"cellDo";

UITableViewCell *cell=(UITableViewCell *)[tableView dequeueReusableCellWithIdentifier:cellDo];

if (!cell) {

cell=[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefaultreuseIdentifier:cellDo];

}

// cell.textLabel.text=[self.tbArray objectAtIndex:indexPath.row];

UITextView *textView=[[UITextView alloc] initWithFrame:CGRectMake(10, 0, self.view.frame.size.width-10, 44)];

textView.text=[self.tbArray objectAtIndex:indexPath.row];;

textView.textColor=[UIColor blackColor];

textView.textAlignment=NSTextAlignmentLeft;

textView.editable=false;

UIButton *btn3 = [UIButton buttonWithType:UIButtonTypeRoundedRect];

btn3.frame = CGRectMake(self.view.frame.size.width,0, 44, 44.0f);

btn3.backgroundColor=[UIColor blackColor];

[btn3 setTitle:@"粉丝" forState:UIControlStateNormal];

UIButton *btn4 = [UIButton buttonWithType:UIButtonTypeRoundedRect];

btn4.frame = CGRectMake(self.view.frame.size.width+44, 0, 44, 44.0f);

[btn4 setTitle:@"话题" forState:UIControlStateNormal];

//设置视图大小

UIScrollView *scrollView=[[UIScrollView alloc] initWithFrame:CGRectMake(0,0, self.view.frame.size.width, 44)];

//设置水平指示滚动标不可见

scrollView.showsHorizontalScrollIndicator = NO;

//设置范围，每块分区以视图大小为准

CGSize newSize = CGSizeMake(self.view.frame.size.width+88, 44);

[scrollView setContentSize:newSize];

scrollView.delegate=self;

//添加单机手势

UITapGestureRecognizer *tapGes=[[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapAction:)];

//设置点按次数

[tapGes setNumberOfTapsRequired:1];

[scrollView addGestureRecognizer:tapGes];

[scrollView addSubview:btn3];

[scrollView addSubview:btn4];

[scrollView addSubview:textView];

//添加视图

[cell.contentView addSubview:scrollView];

return cell;

}

//将上一个滚动视图还原

-(void)tapAction:(UITapGestureRecognizer *)sender{

self.myScrollView.contentOffset=CGPointMake(0, 0);

}

//开始滚动时，如果上一个是改视图，则不还原

-(void)scrollViewDidScroll:(UIScrollView *)scrollView{

if (!(self.myScrollView==scrollView)) {

self.myScrollView.contentOffset=CGPointMake(0, 0);

}

-(BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath*)indexPath{

return YES;

}

//结束滚动时，获取到scrollview

-(void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView{

self.myScrollView=scrollView;

}

@end

UISearchController相关

// ViewController.m

// TableViewTest

// Created by Vie on 15/9/14.

#import "ViewController.h"

#define MAINLABEL ((UILabel *)self.navigationItem.titleView)

//遵守协议

@interface ViewController ()<UITableViewDataSource,UITableViewDelegate,UISearchBarDelegate,UISearchResultsUpdating>

@property(nonatomic,strong) UITableView *tbView;

@property(nonatomic,strong) NSMutableArray *array,*searchArray;

@property (nonatomic, strong) UISearchController *searchController;

@end

@implementation ViewController

- (void)viewDidLoad {

[super viewDidLoad];

[self.view setBackgroundColor:[UIColor whiteColor]];

self.navigationItem.titleView=[[UILabel alloc] initWithFrame:CGRectMake(0.0f, 0.0f, 200.0f, 30.0f)];

[MAINLABEL setTextColor:[UIColor blackColor]];

[MAINLABEL setTextAlignment:NSTextAlignmentCenter];

[MAINLABEL setText:@"Default"];

self.navigationItem.leftBarButtonItem=[[UIBarButtonItem alloc] initWithTitle:@"Add" style:UIBarButtonItemStylePlain target:selfaction:@selector(addAction:)];

self.tbView=[[UITableView alloc] initWithFrame:self.view.frame];

self.tbView.dataSource=self;

self.tbView.delegate=self;

self.array=[[NSMutableArray alloc] init];

//将字体样式值赋给array

for (int i=0; i<[UIFont familyNames].count; i++) {

[self.array addObject:[[UIFont familyNames] objectAtIndex:i]];

}

self.searchArray=[[NSMutableArray alloc] init];

//设置为可编辑

// [self.tbView setEditing:YES animated:YES];

[self.view addSubview:self.tbView];

_searchController = [[UISearchController alloc] initWithSearchResultsController:nil];

_searchController.searchResultsUpdater = self;

_searchController.dimsBackgroundDuringPresentation = NO;

_searchController.hidesNavigationBarDuringPresentation = NO;

_searchController.searchBar.frame = CGRectMake(self.searchController.searchBar.frame.origin.x, self.searchController.searchBar.frame.origin.y, self.searchController.searchBar.frame.size.width, 44.0);

_searchController.searchBar.placeholder=@"输入查找内容";

self.tbView.tableHeaderView = self.searchController.searchBar;

}

//创建分段索引

-(NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView{

NSMutableArray *array=[NSMutableArray arrayWithObjects:@"X",@"Y",@"Z", nil];

return array;

}

//搜索栏改变时回调

-(void)updateSearchResultsForSearchController:(UISearchController*)searchController{

NSString *searchString=[self.searchController.searchBar text];

NSPredicate *preicate=[NSPredicate predicateWithFormat:@"SELF CONTAINS[c] %@",searchString];

if (self.searchArray!=nil) {

[self.searchArray removeAllObjects];

}

//过滤数据

self.searchArray=[NSMutableArray arrayWithArray:[self.arrayfilteredArrayUsingPredicate:preicate]];

//刷新表格

[self.tbView reloadData];

}

//完成移动的触发事件，不添加该方法不能实现移动功能

-(void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath*)sourceIndexPath toIndexPath:(NSIndexPath *)destinationIndexPath{

//在移动的时候将被移动的单元格数据按照新的位置放置数据源中

NSString *moveStr=[self.array objectAtIndex:sourceIndexPath.row];

[self.array removeObjectAtIndex:sourceIndexPath.row];

[self.array insertObject:moveStr atIndex:destinationIndexPath.row];

//重新加载数据，验证数据源的位置是否对应改变(用完注释掉)

// [self.tbView reloadData];

}

//添加数据到arry，重新加载数据，实现添加单元格

-(void)addAction:(id)sender{

[self.array insertObject:@"add" atIndex:0];

[self.tbView reloadData];

}

//处理tableView对象编辑

-(void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath*)indexPath{

if (editingStyle==UITableViewCellEditingStyleDelete) {

//搜索时将搜索的数据也删除,其他删除源数据

if (self.searchController.active){

[self.searchArray removeObjectAtIndex:indexPath.row];

}else{

[self.array removeObjectAtIndex:indexPath.row];

}

[tableView deleteRowsAtIndexPaths:[NSArray arrayWithObjects:indexPath, nil] withRowAnimation:UITableViewRowAnimationFade];

}

//用户选中单元格时回调

-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath*)indexPath{

//改变导航栏的文字和字体。

NSString *font=[self.array objectAtIndex:indexPath.row];

[MAINLABEL setText:font];

[MAINLABEL setFont:[UIFont fontWithName:font size:18.0f]];

//获取到单元格

UITableViewCell *cell=[tableView cellForRowAtIndexPath:indexPath];

//改变左侧图像

cell.imageView.image=[UIImage imageNamed:@"娜美.jpg"];

//单元格右侧添加蓝色勾选样式

cell.accessoryType=UITableViewCellAccessoryCheckmark;

}

//绘制单元格cell

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{

//以indexPath来唯一确定cell，每个单元格重用标示唯一，防止重用机制导致的内容出错

NSString *CellIdentifier = [NSString stringWithFormat:@"cell%ld%ld", (long)[indexPath section], (long)[indexPath row]];

//返回一个可重用的表视图单元格对象位置的标识符,并转换为单元格类型

UITableViewCell *cell=(UITableViewCell *)[tableView dequeueReusableCellWithIdentifier:CellIdentifier];

if (!cell) {

cell=[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitlereuseIdentifier:CellIdentifier];

}

//去掉单元格选中高亮状态样式

cell.selectionStyle=UITableViewCellSelectionStyleNone;

if (self.searchController.active) {

cell.textLabel.text=[self.searchArray objectAtIndex:indexPath.row];

}else{

cell.textLabel.text=[self.array objectAtIndex:indexPath.row];

}

return cell;

}

//指定分区

-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{

return 1;

}

//指定分区单元格数

-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{

if (self.searchController.active) {

return self.searchArray.count;

}else{

return self.array.count;

}

// return self.array.count;

}

@end

UICollectionView相关

效果图

ViewController.h

// ViewController.h

// UseUICollectionView

// Created by Vie on 2016/11/3.

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController

@end

ViewController.m

// ViewController.m

// UseUICollectionView

// Created by Vie on 2016/11/3.

#import "ViewController.h"

#import "MyCollectionViewCell.h"

@interface ViewController ()<UICollectionViewDelegate,UICollectionViewDataSource>

@property(nonatomic,strong) NSArray *array;

@end

@implementation ViewController

- (void)viewDidLoad {

[super viewDidLoad];

// Do any additional setup after loading the view, typically from a nib.

UICollectionViewFlowLayout *layout=[[UICollectionViewFlowLayout alloc] init];

UICollectionView *collView=[[UICollectionView alloc] initWithFrame:self.view.bounds collectionViewLayout:layout];

collView.backgroundColor=[UIColor whiteColor];

collView.dataSource=self;

collView.delegate=self;

//注册单元格使用的类型，必须先注册，否则会报异常

[collView registerClass:[MyCollectionViewCell class] forCellWithReuseIdentifier:NSStringFromClass([MyCollectionViewCell class])];

//注册头

[collView registerClass:[UICollectionReusableView class] forSupplementaryViewOfKind:UICollectionElementKindSectionHeader withReuseIdentifier:@"header"];

//注册脚

[collView registerClass:[UICollectionReusableView class] forSupplementaryViewOfKind:UICollectionElementKindSectionFooter withReuseIdentifier:@"footer"];

[self.view addSubview:collView];

}

#pragma mark -设置当前item是否可以点击

-(BOOL)collectionView:(UICollectionView *)collectionView shouldSelectItemAtIndexPath:(NSIndexPath *)indexPath{

if (indexPath.row%2==0) {

return NO;

}else{

return YES;

}

#pragma mark -点击item时触发

-(void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath{

NSLog(@"您点击了item%@",[[self array] objectAtIndex:indexPath.row]);

if ([collectionView cellForItemAtIndexPath:indexPath].backgroundColor==[UIColor blackColor]) {

[collectionView cellForItemAtIndexPath:indexPath].backgroundColor=[UIColor colorWithRed:arc4random()%255/255.0 green:arc4random()%255/255.0 blue:arc4random()%255/255.0 alpha:1];

}else{

[collectionView cellForItemAtIndexPath:indexPath].backgroundColor=[UIColor blackColor];

}

#pragma mark -设置分区

-(NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView{

return 1;

}

#pragma mark -设置分区内单元格数量

-(NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section{

return self.array.count;

}

#pragma mark -设置每个item的大小

-(CGSize)collectionView:(UICollectionView *)collectionView layout:(nonnull UICollectionViewLayout *)collectionViewLayout sizeForItemAtIndexPath:(nonnull NSIndexPath *)indexPath{

if (indexPath.row%2==0) {

return CGSizeMake(99, 99);

}else{

return CGSizeMake(99, 99);

}

#pragma mark -设置每个分区的边距

-(UIEdgeInsets)collectionView:(UICollectionView *)collectionView layout:(nonnull UICollectionViewLayout *)collectionViewLayout insetForSectionAtIndex:(NSInteger)section{

return UIEdgeInsetsMake(20, 10, 20, 10);

}

#pragma mark -设置单元格

-(UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(nonnull NSIndexPath *)indexPath{

//设置的单元格要与Identifier注册的一致

MyCollectionViewCell *cell=[collectionView dequeueReusableCellWithReuseIdentifier:NSStringFromClass([MyCollectionViewCell class]) forIndexPath:indexPath];

NSLog(@"%@",[[self array] objectAtIndex:indexPath.row]);

cell.titleStr=[[self array] objectAtIndex:indexPath.row];

cell.backgroundColor = [UIColor colorWithRed:arc4random()%255/255.0 green:arc4random()%255/255.0 blue:arc4random()%255/255.0 alpha:1];

return cell;

}

-(NSArray *)array{

if (!_array) {

_array=[NSArray arrayWithObjects:@"李一",@"虎二",@"张三",@"李四",@"王五",@"赵六",@"陈七",@"刘九",@"夏十", nil];

}

return _array;

}

- (void)didReceiveMemoryWarning {

[super didReceiveMemoryWarning];

// Dispose of any resources that can be recreated.

}

@end

MyCollectionViewCell.h

// MyCollectionViewCell.h

// UseUICollectionView

// Created by Vie on 2016/11/3.

#import <UIKit/UIKit.h>

@interface MyCollectionViewCell : UICollectionViewCell

@property(nonatomic,strong) NSString *titleStr;

@end

MyCollectionViewCell.m

// MyCollectionViewCell.m

// UseUICollectionView

// Created by Vie on 2016/11/3.

#import "MyCollectionViewCell.h"

@interface MyCollectionViewCell()

@property(nonatomic,strong) UILabel *titleLable;

@end

@implementation MyCollectionViewCell

-(instancetype)initWithFrame:(CGRect)frame{

self=[super initWithFrame:frame];

if (self) {

[self darwView];

}

return self;

}

-(void)setTitleStr:(NSString *)titleStr{

_titleLable.text=titleStr;

}

-(void)darwView{

[self addSubview:[self titleLable]];

}

-(UILabel *)titleLable{

if (!_titleLable) {

_titleLable=[[UILabel alloc] initWithFrame:CGRectMake(0, 0, 99, 99)];

_titleLable.textColor=[UIColor whiteColor];

_titleLable.textAlignment=NSTextAlignmentCenter;

}

return _titleLable;

}

@end

单元格右侧样式

//右侧小红勾

cell.accessoryType=UITableViewCellAccessoryCheckmark;

cell.tintColor=[UIColor redColor];

//右侧灰色小箭头

cell.accessoryType=UITableViewCellAccessoryDisclosureIndicator;

//右侧蓝色i符号加灰色小箭头

cell.accessoryType=UITableViewCellAccessoryDetailDisclosureButton;

//右侧蓝色i符号

cell.accessoryType=UITableViewCellAccessoryDetailButton;

自定义UISlider样式

//左右侧的图片

UIImage *stetchLeftTrack= [UIImage imageNamed:@"left_bar.png"];

UIImage *stetchRightTrack = [UIImage imageNamed:@"right_bar.png"];

//滑块图片

UIImage *thumbImage = [UIImage imageNamed:@"mark.png"];

UISlider *slider=[[UISlider alloc]initWithFrame:CGRectMake(30, 320, 257, 7)];

slider.backgroundColor = [UIColor clearColor];

slider.value=0.3;

slider.minimumValue=0.0;

slider.maximumValue=1.0;

[slider setMinimumTrackImage:stetchLeftTrack forState:UIControlStateNormal];

[slider setMaximumTrackImage:stetchRightTrack forState:UIControlStateNormal];

//注意这里要加UIControlStateHightlighted的状态，否则当拖动滑块时滑块将变成原生的控件

[slider setThumbImage:thumbImage forState:UIControlStateHighlighted];

[slider setThumbImage:thumbImage forState:UIControlStateNormal];

//滑块拖动时的事件

[slider addTarget:self action:@selector(sliderValueChanged:) forControlEvents:UIControlEventValueChanged];

//滑动拖动后的事件

[slider addTarget:self action:@selector(sliderDragUp:) forControlEvents:UIControlEventTouchUpInside];

[self.view addSubview:slider];