IOS入门-基础控件
基础控件
- UILable（文本标签）
- UIButton（按钮）
- UIView（视图）
- UITextView（文本输入框）
- UIImageView（图片显示）
- UITextView（能滚动的文字显示控件）
- UIActivityIndicator（菊花圈圈）
- UISwitch（开关按钮）
- UIPickView（滚轮选择器）
- UIDatePicker（日期选择器）
- UIToolBar（工具条）
- UIProgressView（进度条）
- UISlider（滑块）
- UISegmentControl（选项卡）
- UIPageControl（分页控件）
- UIScrollView（滑动的控件）
- UITableView（表格）
- 创建一个UITableViewCell
- 创建另一个UITableViewCell
- 使用UITableViewCell创建UITableView
- UICollectionView（九宫格）
- 创建一个UITableViewCell
- 使用UITableViewCell创建UICollectionView
- UIWebView (网页显示控件)
- UIAlertView (对话框（中间弹框）)
- UINavigationBar（导航条）
UILable（文本标签）
// ViewController.m
// UILabel
#import "ViewController.h"
@interface ViewController ()
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
//UILabel
UILabel *label = [[UILabel alloc]init];
label.text = @"文本控件";
label.font = [UIFont systemFontOfSize:20];
label.textColor = [UIColor whiteColor];
label.backgroundColor = [UIColor redColor];
label.numberOfLines = 0;//0 不限制行数
label.textAlignment = NSTextAlignmentCenter;//right center
[self.view addSubview:label];
label.frame = CGRectMake(20, 20, 100, 100);
}
@end
UIButton（按钮）
// ViewController.m
// UIButton
#import "ViewController.h"
@interface ViewController ()
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
//UIControlStateHighlighted:按钮按下时状态
UIButton *button=[[]UIButton buttomWithType:UIButtonTypeCustom]
[button setTitle:@"按钮" forState:UIControlStateNormal];
[button setTitle:@"按下高亮" forState:UIControlStateHighlighted];
UIColor *color = [UIColor redColor];
[button setBackgroundColor:color];
[button setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
[button setTitleColor:[UIColor grayColor] forState:UIControlStateHighlighted];
[button addTarget:self action:@selector(buttonClick:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:button];
button.frame = CGRectMake(0, 0, 100, 100);
}
- (void)buttonClick:(UIButton *)sender{
NSLog(@"按钮点击触发");
}
@end
UIView（视图）
UIView是窗口上的一块区域，是iOS中所有控件的基类
// ViewController.m
// UIView
#import "ViewController.h"
@interface ViewController ()
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
self.view.backgroundColor = [UIColor yellowColor];
UIView *customView = [[UIView alloc]init];
customView.backgroundColor = [UIColor redColor];
[self.view addSubview:customView];
customView.frame = CGRectMake(0, 0, 100, 100);
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
[button setTitle:@"按钮" forState:UIControlStateNormal];
[button setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
[button setBackgroundColor:[UIColor whiteColor]];
[customView addSubview:button];
button.frame = CGRectMake(0, 0,customView.frame.size.width, 30);
}
@end
UITextView（文本输入框）
// ViewController.m
// UITextField
#import "ViewController.h"
@interface ViewController ()<UITextFieldDelegate>
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
//UItextField
UITextField *textField = [[UITextField alloc]init];
textField.delegate = self;
textField.backgroundColor = [UIColor redColor];
textField.textColor = [UIColor whiteColor];
textField.font = [UIFont systemFontOfSize:18];
textField.placeholder = @"请输入账户名";
[self.view addSubview:textField];
textField.frame = CGRectMake(0, 50, self.view.frame.size.width, 50);
}
//指明是否允许在按下回车键时结束编辑
- (BOOL)textFieldShouldReturn:(UITextField *)textField{
[textField resignFirstResponder];
return YES;
}
- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField{
NSLog(@"开始编辑");
return YES;
}
- (void)textFieldDidEndEditing:(UITextField *)textField{
NSLog(@"编辑结束 = %@",textField.text);
}
@end
UIImageView（图片显示）
// ViewController.m
// UIImageView
#import "ViewController.h"
@interface ViewController ()
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
UIImage *image = [UIImage imageNamed:@"image_pic"];
UIImageView *imageView = [[UIImageView alloc]init];
imageView.image = image;
imageView.backgroundColor = [UIColor blackColor];
//UIViewContentModeScaleToFill，表示通过缩放来填满view，也就是说图片会变形。
//UIViewContentModeScaleAspectFit，表示按比例缩放并且图片要完全显示出来，意味着view可能会留有空白
//UIViewContentModeScaleAspectFill，表示按比例缩放并且填满view，意味着图片可能超出view，可能被裁减掉
imageView.contentMode = UIViewContentModeScaleAspectFill;//,UIViewContentModeScaleAspectFit,UIViewContentModeScaleAspectFill
imageView.clipsToBounds = YES;
[self.view addSubview:imageView];
imageView.frame = CGRectMake(0, 0, 100, 100);
}
@end
UITextView（能滚动的文字显示控件）
// ViewController.m
// UITextView
#import "ViewController.h"
@interface ViewController ()<UITextViewDelegate>
@property(nonatomic,strong)UITextView *textView;
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
self.textView = [[UITextView alloc]init];
self.textView.delegate = self;
self.textView.textColor = [UIColor blackColor];
self.textView.layer.borderWidth = 0.5;
self.textView.layer.borderColor = [UIColor redColor].CGColor;
[self.view addSubview:self.textView];
self.textView.frame = CGRectMake(20, 200, 300, 200);
}
- (BOOL)textViewShouldBeginEditing:(UITextView *)textView{
NSLog(@"开始编辑");
return YES;
}
- (void)textViewDidEndEditing:(UITextView *)textView{
NSLog(@"结束编辑 = %@",textView.text);
}
- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{
[self.textView resignFirstResponder];
}
@end
UIActivityIndicator（菊花圈圈）
//
// ViewController.m
// UIActivityIndicatorView
#import "ViewController.h"
@interface ViewController ()
@property(nonatomic,strong)UIActivityIndicatorView *activityIndicatorView;
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
self.activityIndicatorView = [[UIActivityIndicatorView alloc]initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleGray];
self.activityIndicatorView.color = [UIColor whiteColor];
self.activityIndicatorView.backgroundColor = [UIColor blackColor];
[self.view addSubview:self.activityIndicatorView];
self.activityIndicatorView.frame = CGRectMake(100, 100, 100, 100);
self.activityIndicatorView.hidesWhenStopped = NO;
self.activityIndicatorView startAnimating
}
@end
UISwitch（开关按钮）
//
// ViewController.m
// UISwitch
#import "ViewController.h"
@interface ViewController ()
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
UISwitch *mySwitch = [[UISwitch alloc]init];
//内置控件的大小
mySwitch.on = YES;
mySwitch.tintColor = [UIColor redColor];//关闭状态的边框颜色
mySwitch.onTintColor = [UIColor yellowColor];
mySwitch.thumbTintColor = [UIColor blueColor];
[self.view addSubview:mySwitch];
mySwitch.frame = CGRectMake(100, 100, 300, 300);
[mySwitch addTarget:self action:@selector(click) forControlEvents:UIControlEventValueChanged];
}
- (void)click{
NSLog(@"触发");
}
@end
UIPickView（滚轮选择器）
// ViewController.m
// UIPickerView
#import "ViewController.h"
@interface ViewController ()<UIPickerViewDataSource,UIPickerViewDelegate>
@property(nonatomic,strong)UIPickerView *pickerView;
@property(nonatomic,strong)NSMutableArray *numberArray;
@property(nonatomic,strong)NSMutableArray *titleArray;
@property(nonatomic,copy)NSString *selctedNumStr;
@property(nonatomic,copy)NSString *selectedTitleStr;
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
self.view.backgroundColor = [UIColor whiteColor];
//UIPickerView
self.pickerView = [[UIPickerView alloc]initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, 300)];
self.pickerView.backgroundColor = [UIColor yellowColor];
[self.view addSubview:self.pickerView];
self.pickerView.dataSource = self;
self.pickerView.delegate = self;
self.numberArray = [[NSMutableArray alloc]init];
for (int i = 0; i<10; i++) {
NSString *tempStr = [NSString stringWithFormat:@"%d",i];
[self.numberArray addObject:tempStr];
}
self.titleArray = [[NSMutableArray alloc]init];
for (int i = 0; i<5; i++) {
NSString *tempStr = [NSString stringWithFormat:@"title%d",i];
[self.titleArray addObject:tempStr];
}
}
//有几列
- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView{
return 2;
}
///设置指定列包含的行数
- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component{
if (component == 0) {
return self.numberArray.count;
}else{
return self.titleArray.count;
}
}
//每个选项显示的内容
- (nullable NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component{
if (component == 0) {
return self.numberArray[row];
}else{
return self.titleArray[row];
}
}
//滚轮高度
- (CGFloat)pickerView:(UIPickerView *)pickerView rowHeightForComponent:(NSInteger)component{
return 44;
}
//滚轮宽度
- (CGFloat)pickerView:(UIPickerView *)pickerView widthForComponent:(NSInteger)component{
if (component == 0) {
return 50;
}
return 200;
}
//获取当前选中的选项
- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component{
if (component == 0) {
NSString *numStr = self.numberArray[row];
NSLog(@"numStr = %@",numStr);
self.selctedNumStr = numStr;
}else{
NSString *titleStr = self.titleArray[row];
self.selectedTitleStr = titleStr;
}
}
@end
UIDatePicker（日期选择器）
// ViewController.m
// UIDatePicker
#import "ViewController.h"
@interface ViewController ()
@property(nonatomic,strong)UIDatePicker *datePicker;
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
// UIDatePicker
self.datePicker = [[UIDatePicker alloc]initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, 300)];
[self.view addSubview:self.datePicker];
[self.datePicker addTarget:self action:@selector(dateChange:) forControlEvents:UIControlEventValueChanged];
//默认显示今天
//最小时间 离当前时间：明天
self.datePicker.minimumDate = [NSDate dateWithTimeIntervalSinceNow:86400];
//最大时间 离当前时间：后天
self.datePicker.maximumDate = [NSDate dateWithTimeIntervalSinceNow:172800];
[self.datePicker setDatePickerMode:UIDatePickerModeTime];
}
- (void)dateChange:(UIDatePicker *)sender{
NSLog(@"sender.date = %@",sender.date);
}
@end
UIToolBar（工具条）
// ViewController.m
// UIToolBar
#import "ViewController.h"
@interface ViewController ()
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
//UIToolBar
UIToolbar *toolBar = [[UIToolbar alloc]initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, 44)];
toolBar.barStyle = UIBarStyleDefault;
toolBar.backgroundColor = [UIColor orangeColor];
//UIBarButtonItem
[self.view addSubview:toolBar];
UIBarButtonItem *cancelItem = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemCancel target:self action:@selector(cancelAction:)];
UIBarButtonItem *spaceItem = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:self action:NULL];
UIBarButtonItem *addItem = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:@selector(addAction)];
[toolBar setItems:@[cancelItem,spaceItem,addItem] animated:YES];
}
- (void)cancelAction:(UIBarButtonItem *)sender{
NSLog(@"取消");
}
- (void)addAction{
NSLog(@"添加");
}
@end
UIProgressView（进度条）
// ViewController.m
// UIProgressView
#import "ViewController.h"
@interface ViewController ()
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
// UIProgressView
UIProgressView *progressView = [[UIProgressView alloc]initWithFrame:CGRectMake(100, 100, 200, 40)];
progressView.progress = 0.5;//表示进度
progressView.progressTintColor = [UIColor redColor];
progressView.trackTintColor = [UIColor greenColor];
progressView.progressViewStyle = UIProgressViewStyleBar;
[self.view addSubview:progressView];
}
@end
UISlider（滑块）
// ViewController.m
// UISlider
#import "ViewController.h"
@interface ViewController ()
@property(nonatomic,strong)UISlider *slider;
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
// UISlider
self.slider = [[UISlider alloc]init];
self.slider.minimumTrackTintColor = [UIColor greenColor];
self.slider.maximumTrackTintColor = [UIColor redColor];
[self.slider setThumbImage:[UIImage imageNamed:@"椭圆5"] forState:UIControlStateNormal];
[self.slider addTarget:self action:@selector(changeProgress:) forControlEvents:UIControlEventValueChanged];
[self.view addSubview:self.slider];
self.slider.frame = CGRectMake(100, 100, 200, 30);
}
- (void)changeProgress:(UISlider *)sender{
NSLog(@"进度 = %f",sender.value);
}
@end
UISegmentControl（选项卡）
// ViewController.m
// UISegmentControl
#import "ViewController.h"
@interface ViewController ()
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
//UISegmentControl
NSArray *data = @[@"1",@"2",@"3"];
UISegmentedControl *segment = [[UISegmentedControl alloc]initWithItems:data];
[segment addTarget:self action:@selector(click:) forControlEvents:UIControlEventValueChanged];
[segment insertSegmentWithTitle:@"4" atIndex:3 animated:YES];
[segment removeSegmentAtIndex:0 animated:YES];
[segment setTintColor:[UIColor greenColor]];
[segment setBackgroundColor:[UIColor redColor]];
[self.view addSubview:segment];
segment.frame = CGRectMake(20, 20, 200, 44);
}
- (void)click:(UISegmentedControl *)sender{
NSLog(@"第%ld个",(long)sender.selectedSegmentIndex);
}
@end
UIPageControl（分页控件）
**一般UIPageControl会配合ScrollView一起使用
// ViewController.m
// UIPageControl
#import "ViewController.h"
@interface ViewController ()
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
UIPageControl *pageControl = [[UIPageControl alloc]init];
pageControl.numberOfPages = 5;
pageControl.currentPage = 1;
pageControl.currentPageIndicatorTintColor = [UIColor whiteColor];
pageControl.pageIndicatorTintColor = [UIColor blackColor];
[self.view addSubview:pageControl];
pageControl.frame = CGRectMake(0, 100, self.view.frame.size.width, 50);
pageControl.backgroundColor = [UIColor redColor];
}
@end
UIScrollView（滑动的控件）
**一般UIPageControl会配合ScrollView一起使用
// ViewController.m
// UIScrollView
#import "ViewController.h"
@interface ViewController ()<UIScrollViewDelegate>
@property(nonatomic,strong)UIScrollView *scrollView;
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
//UIScrollView
self.scrollView = [[UIScrollView alloc]initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height-100)];
self.scrollView.contentSize = CGSizeMake(self.view.frame.size.width * 2, self.view.frame.size.height);
self.scrollView.backgroundColor = [UIColor grayColor];
[self.view addSubview:self.scrollView];
UIView *view1 = [[UIView alloc]init];
view1.backgroundColor = [UIColor redColor];
[self.scrollView addSubview:view1];
view1.frame = CGRectMake(0, 0, self.scrollView.frame.size.width, self.scrollView.frame.size.height-100);
UIView *view2 = [[UIView alloc]init];
view2.backgroundColor = [UIColor yellowColor];
[self.scrollView addSubview:view2];
view2.frame = CGRectMake(self.scrollView.frame.size.width, 0, self.scrollView.frame.size.width, self.scrollView.frame.size.height - 100);
self.scrollView.bounces = NO;
self.scrollView.pagingEnabled = YES;
self.scrollView.scrollEnabled = YES;
self.scrollView.showsVerticalScrollIndicator = YES;
self.scrollView.showsHorizontalScrollIndicator = YES;
self.scrollView.delegate = self;
}
- (void)scrollViewDidScroll:(UIScrollView *)scrollView{
NSLog(@"滚动的时候触发");
}
- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView{
NSLog(@"结束滑动");
}
- (void)scrollViewDidEndScrollingAnimation:(UIScrollView *)scrollView{
NSLog(@"结束滚动");
}
- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{
[self.scrollView setContentOffset:CGPointMake(self.view.frame.size.width, 0) animated:YES];
}
@end
UITableView（表格）
创建一个UITableViewCell
// TestCell.h
// UITableView
#import // TestCell.m
// UITableView
#import "TestCell.h"
@implementation TestCell
- (instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier
{
self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
if (self) {
self.selectionStyle = UITableViewCellSelectionStyleNone;
}
return self;
}
@end
创建另一个UITableViewCell
// Test2Cell.h
// UITableView
#import // Test2Cell.m
// UITableView
#import "Test2Cell.h"
@implementation Test2Cell
- (instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier
{
self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
if (self) {
self.selectionStyle = UITableViewCellSelectionStyleNone;
self.contentView.backgroundColor = [UIColor yellowColor];
self.backgroundColor = [UIColor yellowColor];
}
return self;
}
@end
使用UITableViewCell创建UITableView
// ViewController.m
// UITableView
#import "ViewController.h"
#import "TestCell.h"
#import "Test2Cell.h"
@interface ViewController ()<UITableViewDelegate,UITableViewDataSource>
@property(nonatomic,strong)UITableView *tableView;
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
//UITableView 重点
self.tableView = [[UITableView alloc]initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height) style:UITableViewStyleGrouped];
self.tableView.delegate = self;
self.tableView.dataSource = self;
[self.view addSubview:self.tableView];
//uitableviewCell
[self.tableView registerClass:[TestCell class] forCellReuseIdentifier:@"TestCell"];
[self.tableView registerClass:[Test2Cell class] forCellReuseIdentifier:@"Test2Cell"];
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{
return 2;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
if (section == 0) {
return 10;
}
return 5;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
if (indexPath.section == 0) {
TestCell *cell = [tableView dequeueReusableCellWithIdentifier:@"TestCell" forIndexPath:indexPath];
cell.textLabel.text = [NSString stringWithFormat:@"第%ld组 第%ld行",(long)indexPath.section,indexPath.row + 1];
return cell;
}
Test2Cell *cell = [tableView dequeueReusableCellWithIdentifier:@"Test2Cell" forIndexPath:indexPath];
cell.textLabel.text = [NSString stringWithFormat:@"第%ld组 第%ld行",(long)indexPath.section,indexPath.row + 1];
return cell;
}
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{
if (indexPath.section == 0) {
return 50;
}
return 78;
}
- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section{
if (section == 0) {
return CGFLOAT_MIN;
}
return 44;
}
- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section{
if (section == 0) {
return nil;
}
UIView *view = [[UIView alloc]init];
view.backgroundColor = [UIColor redColor];
return view;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
NSLog(@"我触发了 组 = %ld 行 = %ld",(long)indexPath.section,(long)indexPath.row);
}
@end
UICollectionView（九宫格）
创建一个UITableViewCell
// TestCell.h
// UITableView
#import // TestCell.m
// UITableView
#import "TestCell.h"
@implementation TestCell
- (instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier
{
self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
if (self) {
self.selectionStyle = UITableViewCellSelectionStyleNone;
}
return self;
}
@end
使用UITableViewCell创建UICollectionView
//
// ViewController.m
// UICollectionView
#import "ViewController.h"
#import "TestCell.h"
@interface ViewController ()<UICollectionViewDelegate,UICollectionViewDataSource>
@property(nonatomic,strong)UICollectionView *collectionView;
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
//UICollectionView
UICollectionViewFlowLayout *layout = [[UICollectionViewFlowLayout alloc]init];
[layout setScrollDirection:UICollectionViewScrollDirectionVertical];
layout.minimumLineSpacing = 20;
layout.minimumInteritemSpacing = 20;
layout.itemSize = CGSizeMake((self.view.frame.size.width - 20*3 - 1) / 4.0, (self.view.frame.size.width - 20*2) / 4.0 + 15);
self.collectionView = [[UICollectionView alloc]initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, 200) collectionViewLayout:layout];
self.collectionView.backgroundColor = [UIColor redColor];
self.collectionView.delegate = self;
self.collectionView.dataSource = self;
[self.view addSubview:self.collectionView];
//必须复用
[self.collectionViewregisterClass:[TestCell class] forCellReuseIdentifier:@"TestCell"];
}
- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section{
return 10;
}
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath{
TestCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"TestCell" forIndexPath:indexPath];
cell.contentLabel.text = [NSString stringWithFormat:@"第%ld个",(long)indexPath.row];
return cell;
}
- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath{
NSLog(@"第%ld个",indexPath.row + 1);
//把indexpath.row
if (self.didSelected) {
self.didSelected(indexPath.row);
}
}
@end
UIWebView (网页显示控件)
//
// ViewController.m
// UIWebView
#import "ViewController.h"
#import UIAlertView (对话框（中间弹框）)
//
// ViewController.m
// UIAlertController
//
// Created by clz on 2019/8/25.
// Copyright © 2019年 clz. All rights reserved.
//
#import "ViewController.h"
@interface ViewController ()
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
//UIAlertController
}
- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{
// UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"温馨提示" message:@"确认删除吗？" preferredStyle:UIAlertControllerStyleAlert];
//
// UIAlertAction *action = [UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
// NSLog(@"我点击了确定");
// }];
//
// UIAlertAction *cancel = [UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {
// NSLog(@"我选择了取消");
// }];
//
// [alert addAction:action];
// [alert addAction:cancel];
//
// [self presentViewController:alert animated:YES completion:^{
//
// }];
UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"拍照" message:@"" preferredStyle:UIAlertControllerStyleActionSheet];
UIAlertAction *action = [UIAlertAction actionWithTitle:@"从相册选择" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
NSLog(@"我点击了确定");
}];
UIAlertAction *action1 = [UIAlertAction actionWithTitle:@"拍照" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
NSLog(@"我点击了确定");
}];
UIAlertAction *cancel = [UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {
NSLog(@"我选择了取消");
}];
[alert addAction:action];
[alert addAction:action1];
[alert addAction:cancel];
[self presentViewController:alert animated:YES completion:^{
}];
}
@end
UINavigationBar（导航条）
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view.
self.view.backgroundColor = [UIColor redColor];
self.navigationItem.title = @"导航栏";
UIBarButtonItem *backItem = [[UIBarButtonItem alloc]initWithTitle:@"返回" style:UIBarButtonItemStylePlain target:self action:nil];
self.navigationItem.backBarButtonItem = backItem;
}