一：OC基础语法1
//整型
NSInteger a =10;
//NSLog是OC里面的打印函数
NSLog(@"a = %ld",a);
//浮点型
CGFloat b =2.3;
NSLog(@"b = %.2f",b);
//布尔类型
BOOL flag =YES;
//字符串NSString(只要是对象类型，占符全部都是%@)
NSString *str =@"abcde";
NSLog(@"str = %@",str);
//length字符串的长度
NSLog(@"str的长度= %ld",str.length);
//字符串相等（全等，前缀，后缀）
//1，全等
if ([strisEqualToString:@"abcde"]){
NSLog(@"是的");
}
//2,前缀相等
if ([strhasPrefix:@"a"]){
NSLog(@"前缀等于a");
}
//3,后缀相等
if ([strhasSuffix:@"de"]){
NSLog(@"后缀等于de");
}
//格式化创建字符串
NSString *str1 = [NSString stringWithFormat:@"im"];
NSLog(@"str = %@",str1);
二：OC基础语法2
//数组（NSArry/NSMutableArry）
//不可变数组
NSArray *array1 =@[@"a",@"b",@"c",@"d"];
NSLog(@"array1 = %@",array1);
//数组元素个数.count
NSLog(@"count = %ld",array1.count);
//通过下标访问数组里面的元素
NSString *str = array1[0];
NSLog(@"str = %@",str);
//可变数组NSMutableArray
NSMutableArray *mutableArray = [NSMutableArrayarrayWithObjects:@"1",@"2",@"3",@"4",nil];
NSLog(@"mutableArray = %@",mutableArray);
//添加
[mutableArrayaddObject:@"5"];
NSLog(@"已添加-----%@",mutableArray);
//移除
[mutableArrayremoveObject:@"3"];
NSLog(@"已移除-----%@"，mutableArray)；
//字典(存放)（NSDictionary,NSMutableDictionary）
//不可变字典NSDictionary
NSDictionary *dict =@{@"key1":@"value1",@"key2":@"value2",@"key3":@"value3"};
NSLog(@"dict = %@",dict);
NSString *string =[dictobjectForKey:@"key1"];
NSLog(@"string = %@",string);
//所有的key值，所有的value值
NSLog(@"allValue = %@,allValue = %@",dict.allKeys,dict.allValues);
三：OC方法格式
//调用方法用空格，方法调用结束用括号表示
[self func1];
NSInteger num = [self func2];
NSLog(@"num = %ld",num);
NSInteger length = [selflengOfstring:@"12345"];
NSLog(@"length = %ld",length);
//+表示类方法，只能用类来调用，-表示实例方法，用对象调用
//无参数输入的方法格式：+/-(方法的返回值）方法名
- (void)func1
{
NSLog(@"%s",__func__);
}
-(NSInteger)func2{
NSLog(@"%s",__func__);
return20;
}
//有参数输入的方法格式：=+/-（方法的返回值）方法名：(参数1类型)参数1名方法名：（参数2类型）参数2名
//输入字符串，返回字符串长度
-(NSInteger)lengOfstring:(NSString*)string
{
returnstring.length;
}
//内存溢出的时候调用
- (void)didReceiveMemoryWarning {
[superdidReceiveMemoryWarning];
}
四：UI常用控件
//按钮UIButton (UIButton *button =[UIButton buttonWithType:UIButtonTypeInfoDark];
)
//frame表明了控件的坐标和宽高（CGRect类型）
UIButton *button = [[UIButtonalloc]initWithFrame:CGRectMake(20(x),50(y),80(宽),80(高))];
[button setTitle:@"火影" forState:UIControlStateNormal];
//根据名字加载图片
UIImage *image = [UIImageimageNamed:@"left_normal"];
//给按钮设置背景图片（forState表明按钮状态）
[buttonsetBackgroundImage:ImageforState:(UIControlStateNormal)];
//给按钮设置背景图片颜色
button.backgroundColor = [UIColor redColor];
//按钮的监听
[buttonaddTarget:selfaction:@selector(btnClickLister)forControlEvents:UIControlEventTouchUpInside];
//添加按钮到视图上面
[self.viewaddSubview:button];
//相框UIImageView
UIImageView *imageview = [[UIImageViewalloc]initWithFrame:CGRectMake(150(x),50(y),200(宽),200(高))];
UIImage *image1 = [UIImageimageNamed:@"biaoqingdi"];
//设置imageView显示的图片
imageview.image= image1;
[self.viewaddSubview:imageview];
//标签UILabel
UILabel *label = [[UILabelalloc]initWithFrame:CGRectMake(150(x),270(y),150(宽),30(高))];
//设置标签文本
label.text=@"XUANG";
//设置居中方式
label.textAlignment=NSTextAlignmentCenter;
//设置标签文本颜色
label.textColor= [UIColorredColor];
//添加标签到视图上面
[self.viewaddSubview:label];}
例：（实例应用）：显示图片
#import"ViewController.h"
@interfaceViewController()
//标题标签
@property(nonatomic,strong)UILabel*titleLabel;
//左边按钮
@property(nonatomic,strong)UIButton*leftBtn;
//右边按钮
@property(nonatomic,strong)UIButton*rightBtn;
//显示图片
@property(nonatomic,strong)UIImageView*myImageView;
//定义数组名
@property(nonatomic,strong)NSArray*imageNames;
@end
@implementationViewController
- (void)viewDidLoad {
[superviewDidLoad];
self.imageNames=@[@"biaoqingdi",@"bingli",@"chiniupa",@"danteng",@"wangba"];
//定义标签位置与名称
self.titleLabel= [[UILabelalloc]initWithFrame:CGRectMake(150,50,150,30)];
self.titleLabel.text=@"biaoqingdi";
[self.viewaddSubview:self.titleLabel];
//定义做按钮的位置
self.leftBtn= [[UIButtonalloc]initWithFrame:CGRectMake(20,150,45,45)];
//定义按钮的图片
UIImage *leftImage = [UIImageimageNamed:@"left_disablez"];
//设置左按钮的背景图片
[self.leftBtnsetBackgroundImage:leftImageforState:(UIControlStateNormal)];
[self.viewaddSubview:self.leftBtn];
//显示相框名称
self.myImageView= [[UIImageViewalloc]initWithFrame:CGRectMake(85,100,200,200)];
UIImage *image = [UIImageimageNamed:@"biaoqingdi"];
self.myImageView.image= image;
//显示相框图片
[self.viewaddSubview:self.myImageView];
//设置右按钮的位置
self.rightBtn=[[UIButtonalloc]initWithFrame:CGRectMake(305,150,45,45)];
//设置右按钮的图片
UIImage *rightImage = [UIImageimageNamed:@"right_normal"];
//设置右按钮的背景图片
[self.rightBtnsetBackgroundImage:rightImageforState:(UIControlStateNormal)];
[self.viewaddSubview:self.rightBtn];
//按钮的监听
[self.rightBtnaddTarget:selfaction:@selector(rightBtnAction)forControlEvents:(UIControlEventTouchUpInside)];
[self.leftBtnaddTarget:selfaction:@selector(leftBtnAction)forControlEvents:(UIControlEventTouchUpInside)];
}
-(void)rightBtnAction
{
//切换到下一张图片
//获取当前是第几张图片
NSInteger index = [self.imageNamesindexOfObject:self.titleLabel.text];
//不是为最后一张才切换到下一张
if(index <4){
NSString *nextTitle =self.imageNames[index+1];
self.titleLabel.text= nextTitle;
self.myImageView.image= [UIImageimageNamed:nextTitle];
}
}
-(void)leftBtnAction
{
NSInteger index = [self.imageNamesindexOfObject:self.titleLabel.text];
if(index >=0){
NSString *nextTitle =self.imageNames[index-1];
self.titleLabel.text= nextTitle;
self.myImageView.image= [UIImageimageNamed:nextTitle];
}
}
-(void)btnClickLister
{
NSLog(@"click btn");
}
五：序列帧动画
//序列帧动画要播放的图片数组
// imageView.animationImages
//动画时长
// imageView.animationDuration
//动画重复次数
// imageView。animationRepeatCount
//开始动画
// [imageView startAnimating]
//结束动画
// [imageView stopAnimating]
//是否执行动画
// [imageView isAnimating]
//序列帧动画要播放的图片数组
// imageView.animationImages
//动画时长
// imageView.animationDuration
//动画重复次数
// imageView。animationRepeatCount
//开始动画
// [imageView startAnimating]
//结束动画
// [imageView stopAnimating]
//是否执行动画
// [imageView isAnimating]
例：汤姆猫动画（1）
// // ViewController.m //汤姆猫 // // Created by lanou on 16/7/12. //Copyright © 2016年lanou. All rights reserved. // #import"ViewController.h" @interfaceViewController() @property(weak,nonatomic)IBOutletUIImageView*tomcatview; @end @implementationViewController - (void)viewDidLoad { [superviewDidLoad]; } - (IBAction)eatBirdAction:(UIButton*)sender { //创建可变数组 NSMutableArray*images = [NSMutableArrayarray]; for(NSIntegeri =0;i<40;i++) { //根据i来加载图片，然后添加到可变数组image里面 NSString*imageName = [NSStringstringWithFormat:@"eat_%02ld.jpg",i]; //根据格式化的图片名加载图片 UIImage*image = [UIImageimageNamed:imageName]; [imagesaddObject:image]; } //设置动画图片数组 self.tomcatview.animationImages= images; //设置动画时长 self.tomcatview.animationDuration=40*0.075; //设置动画重复次数 self.tomcatview.animationRepeatCount=1; //开始动画 [self.tomcatviewstartAnimating]; } (IBAction)drink:(UIButton*)sender { NSMutableArray*images = [NSMutableArrayarray]; for(NSIntegeri =0;i<81;i++) { //根据i来加载图片，然后添加到可变数组image里面 NSString*imageName = [NSStringstringWithFormat:@"drink_%02ld.jpg",i]; UIImage*image = [UIImageimageNamed:imageName]; [imagesaddObject:image]; } self.tomcatview.animationImages= images; self.tomcatview.animationDuration=81*0.075; self.tomcatview.animationRepeatCount=1; [self.tomcatviewstartAnimating]; } - (IBAction)cymbal:(UIButton*)sender { NSMutableArray*images = [NSMutableArrayarray]; for(NSIntegeri =0;i<13;i++) { //根据i来加载图片，然后添加到可变数组image里面 NSString*imageName = [NSStringstringWithFormat:@"cymbal_%02ld.jpg",i]; UIImage*image = [UIImageimageNamed:imageName]; [imagesaddObject:image]; } self.tomcatview.animationImages= images; self.tomcatview.animationDuration=13*0.075; self.tomcatview.animationRepeatCount=1; [self.tomcatviewstartAnimating]; } - (IBAction)fart:(UIButton*)sender { NSMutableArray*images = [NSMutableArrayarray]; for(NSIntegeri =0;i<28;i++) { //根据i来加载图片，然后添加到可变数组image里面 NSString*imageName = [NSStringstringWithFormat:@"fart_%02ld.jpg",i]; UIImage*image = [UIImageimageNamed:imageName]; [imagesaddObject:image]; } self.tomcatview.animationImages= images; self.tomcatview.animationDuration=28*0.075; self.tomcatview.animationRepeatCount=1; [self.tomcatviewstartAnimating]; } - (IBAction)pie:(UIButton*)sender { NSMutableArray*images = [NSMutableArrayarray]; for(NSIntegeri =0;i<24;i++) { //根据i来加载图片，然后添加到可变数组image里面 NSString*imageName = [NSStringstringWithFormat:@"pie_%02ld.jpg",i]; UIImage*image = [UIImageimageNamed:imageName]; [imagesaddObject:image]; } self.tomcatview.animationImages= images; self.tomcatview.animationDuration=24*0.075; self.tomcatview.animationRepeatCount=1; self.tomcatviewstartAnimating]; } - (IBAction)scratch:(UIButton*)sender { NSMutableArray*images = [NSMutableArrayarray]; for(NSIntegeri =0;i<56;i++) { //根据i来加载图片，然后添加到可变数组image里面 NSString*imageName = [NSStringstringWithFormat:@"scratch_%02ld.jpg",i]; UIImage*image = [UIImageimageNamed:imageName]; [imagesaddObject:image]; } self.tomcatview.animationImages= images; self.tomcatview.animationDuration=56*0.075; self.tomcatview.animationRepeatCount=1; self.tomcatviewstartAnimating]; } - (IBAction)footleft:(UIButton*)sender { NSMutableArray*images = [NSMutableArrayarray]; for(NSIntegeri =0;i<30;i++) { //根据i来加载图片，然后添加到可变数组image里面 NSString*imageName = [NSStringstringWithFormat:@"footleft_%02ld.jpg",i]; UIImage*image = [UIImageimageNamed:imageName]; [imagesaddObject:image]; } self.tomcatview.animationImages= images; self.tomcatview.animationDuration=30*0.075; self.tomcatview.animationRepeatCount=1; [self.tomcatviewstartAnimating]; } - (IBAction)footright:(UIButton*)sender { NSMutableArray*images = [NSMutableArrayarray]; for(NSIntegeri =0;i<30;i++) { //根据i来加载图片，然后添加到可变数组image里面 NSString*imageName = [NSStringstringWithFormat:@"footright_%02ld.jpg",i]; UIImage*image = [UIImageimageNamed:imageName]; [imagesaddObject:image]; } self.tomcatview.animationImages= images; self.tomcatview.animationDuration=30*0.075; self.tomcatview.animationRepeatCount=1; [self.tomcatviewstartAnimating]; } - (IBAction)stomach:(UIButton*)sender { NSMutableArray*images = [NSMutableArrayarray]; for(NSIntegeri =0;i<34;i++) { //根据i来加载图片，然后添加到可变数组image里面 NSString*imageName = [NSStringstringWithFormat:@"stomach_%02ld.jpg",i]; UIImage*image = [UIImageimageNamed:imageName]; [imagesaddObject:image]; } self.tomcatview.animationImages= images; self.tomcatview.animationDuration=34*0.075; self.tomcatview.animationRepeatCount=1; [self.tomcatviewstartAnimating]; } - (IBAction)angry:(UIButton*)sender { NSMutableArray*images = [NSMutableArrayarray]; for(NSIntegeri =0;i<26;i++) { //根据i来加载图片，然后添加到可变数组image里面 NSString*imageName = [NSStringstringWithFormat:@"angry_%02ld.jpg",i]; UIImage*image = [UIImageimageNamed:imageName]; [imagesaddObject:image]; } self.tomcatview.animationImages= images; self.tomcatview.animationDuration=26*0.075; self.tomcatview.animationRepeatCount=1; [self.tomcatviewstartAnimating]; } - (IBAction)knockout:(UIButton*)sender { NSMutableArray*images = [NSMutableArrayarray]; for(NSIntegeri =0;i<81;i++) { //根据i来加载图片，然后添加到可变数组image里面 NSString*imageName = [NSStringstringWithFormat:@"knockout_%02ld.jpg",i]; UIImage*image = [UIImageimageNamed:imageName]; [imagesaddObject:image]; } self.tomcatview.animationImages= images; self.tomcatview.animationDuration=81*0.075; self.tomcatview.animationRepeatCount=1; [self.tomcatviewstartAnimating]; } -(void)didReceiveMemoryWarning { [superdidReceiveMemoryWarning]; // Dispose of any resources that can be recreated. } @end
例：汤姆猫动画（2）
// // ViewController.m // 汤姆猫 // // Created by lanou on 16/7/12. // Copyright ?0?8 2016年 lanou. All rights reserved. // #import "ViewController.h" @interface ViewController () @property (weak, nonatomic) IBOutlet UIImageView *tomcatview; @end @implementation ViewController - (void)viewDidLoad { [super viewDidLoad]; } - (IBAction)eatBirdAction:(UIButton *)sender { [self tomCatAnimationWithName:@"eat" withCount:40];(调用编好的代码组，方便快捷） } - (IBAction)drink:(UIButton *)sender { [self tomCatAnimationWithName:@"drink" withCount:81];(调用编好的代码组，方便快捷） } - (IBAction)cymbal:(UIButton *)sender { [self tomCatAnimationWithName:@"cymbal" withCount:13];(调用编好的代码组，方便快捷） } - (IBAction)fart:(UIButton *)sender { [self tomCatAnimationWithName:@"fart" withCount:28];(调用编好的代码组，方便快捷） } - (IBAction)pie:(UIButton *)sender { [self tomCatAnimationWithName:@"pie" withCount:24];(调用编好的代码组，方便快捷） } - (IBAction)scratch:(UIButton *)sender { [self tomCatAnimationWithName:@"scratch" withCount:56];(调用编好的代码组，方便快捷） } - (IBAction)footleft:(UIButton *)sender { [self tomCatAnimationWithName:@"footleft" withCount:30];(调用编好的代码组，方便快捷） } - (IBAction)footright:(UIButton *)sender { [self tomCatAnimationWithName:@"footright" withCount:30];(调用编好的代码组，方便快捷） } - (IBAction)stomach:(UIButton *)sender { [self tomCatAnimationWithName:@"stomach" withCount:34];(调用编好的代码组，方便快捷） } - (IBAction)angry:(UIButton *)sender { [self tomCatAnimationWithName:@"angry" withCount:26];(调用编好的代码组，方便快捷） } - (IBAction)knockout:(UIButton *)sender { [self tomCatAnimationWithName:@"knockout" withCount:81];(调用编好的代码组，方便快捷） } //代码组 -(void)tomCatAnimationWithName:(NSString*)name withCount:(NSInteger)count { if([self.tomcatview isAnimating]){ return; } //创建可变数组 NSMutableArray *images = [NSMutableArray array]; for (NSInteger i = 0;i< count;i++) { // 根据i来加载图片，然后添加到可变数组image里面 NSString *imageName = [NSString stringWithFormat:@"%@_%02ld.jpg",name,i]; // 根据格式化的图片名加载图片 UIImage *image = [UIImage imageNamed:imageName]; [images addObject:image]; } // 设置动画图片数组 self.tomcatview.animationImages = images; // 设置动画时长 self.tomcatview.animationDuration = count*0.075; // 设置动画重复次数 self.tomcatview.animationRepeatCount = 1; // 开始动画 [self.tomcatview startAnimating]; } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; //Dspose of any resources that can be recreated. } @end
六：访问系统相册
//ViewController.m //访问系统相册 // //Created by lanou on 16/7/12. //Copyright?0?8 2016年lanou.All rights reserved. // #import"ViewController.h" //遵守协议 @interface ViewController() @property(nonatomic,strong)UIButton*userBtn; @end @implementation ViewController -(void)viewDidLoad{ [superviewDidLoad]; //所有能看到的UI控件创建初始化方式都可以采用alloc initWithFrame self.userBtn=[[UIButtonalloc]initWithFrame:CGRectMake(20,60,80,80)]; //设置颜色 self.userBtn.backgroundColor=[UIColorredColor]; //设置圆形半径 self.userBtn.layer.cornerRadius=40; self.userBtn.layer.masksToBounds=YES; //添加点击事件：去访问系统相册 [self.userBtnaddTarget:selfaction:@selector(setUserImage)forControlEvents:(UIControlEventTouchUpInside)]; //添加按钮到屏幕上来 [self.viewaddSubview:self.userBtn]; } //访问系统相册 -(void)setUserImage { //创建系统相册 UIImagePickerController*imagePicker=[[UIImagePickerControlleralloc]init]; //设置代理，到@interface后面遵守协议 imagePicker.delegate=self; //弹出系统相册 [selfpresentViewController:imagePickeranimated:YEScompletion:nil]; } //这个方法是协议UIImagePickerControllerDelegate里面的，选择图片结束的时候就会自动调用 -(void)imagePickerController:(UIImagePickerController*)picker didFinishPickingImage:(UIImage*)image editingInfo:(nullableNSDictionary
*)editingInfo { //设置头像 [self.userBtnsetBackgroundImage:imageforState:(UIControlStateNormal)]; //将系统相册消失 [pickerdismissViewControllerAnimated:YEScompletion:nil]; } -(void)didReceiveMemoryWarning{ [superdidReceiveMemoryWarning]; //Dispose of any resources that can be recreated. } @end