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1:使用@protocol实现delegate和datasource模式
#import <UIKit/UIKit.h> @protocol MyViewDataSource,MyViewDelegate; @interface myView : UIView<UIAlertViewDelegate> @property(nonatomic,assign)id<MyViewDelegate> myViewDelegate; @property(nonatomic,assign)id<MyViewDataSource> myViewDataSource; -(void)myShowAlert; @end @protocol MyViewDelegate <NSObject> @optional -(void)alertDidPop:(myView *)myView; -(void)alertConfirmShow:(myView *)myView clickedButtonAtIndex:(NSInteger)buttonIndex; @end @protocol MyViewDataSource <NSObject> @optional -(NSString *)textOfAlert:(myView *)myView; @required - (NSUInteger)numberOfItemsInMyView:(myView *)myView; @required @end
#import "myView.h"
@implementation myView
-(void)myShowAlert
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"测试实例"
message:@"message"
delegate:self
cancelButtonTitle:@"取消"
otherButtonTitles:@"确定",nil];
alert.message = [self.myViewDataSource textOfAlert:self];
[alert show];
}
- (void)didPresentAlertView:(UIAlertView *)alertView
{
[self.myViewDelegate alertDidPop:self];
}
-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
[self.myViewDelegate alertConfirmShow:self clickedButtonAtIndex:buttonIndex];
}
@end
使用方式：
#import "myView.h" @interface ViewController ()<MyViewDataSource,MyViewDelegate> @end
- (void)viewDidLoad {
[super viewDidLoad];
myView *myVw = [[myView alloc]initWithFrame:CGRectMake(0, 0, 320, 460)];
myVw.myViewDataSource = self;
myVw.myViewDelegate = self;
[self.view addSubview:myVw];
[myVw myShowAlert];
}
代理实现的方法：
- (void)alertDidPop:(UIView *)myView
{
myView.backgroundColor = [UIColor yellowColor];
}
-(NSString *)textOfAlert:(myView *)myView
{
return @"信息";
}
-(void)alertConfirmShow:(myView *)myView clickedButtonAtIndex:(NSInteger)buttonIndex
{
NSLog(@"你选中了%d",buttonIndex);
}
2:动画 UIView animateWithDuration 使用详解
+ (void)animateWithDuration:(NSTimeInterval)duration animations:(void (^)(void))animations + (void)animateWithDuration:(NSTimeInterval)duration animations:(void (^)(void))animations completion:(void (^)(BOOL finished))completion + (void)animateWithDuration:(NSTimeInterval)duration delay:(NSTimeInterval)delay options:(UIViewAnimationOptions)options animations:(void (^)(void))animations completion:(void (^)(BOOL finished))completion
duration为动画持续的时间。animations为动画效果的代码块
可设动作属性：
例如一个视图淡出屏幕，另外一个视图出现的代码
[UIView animateWithDuration:1.0 animations:^{
firstView.alpha = 0.0;
secondView.alpha = 1.0;
}];
连续动画（可以在completion代码块中添加动画）：
[UIView animateWithDuration:2.0
animations:^{
oldImageView.alpha = 0.0;
newImageView.alpha = 1.0;
//imageView.center = CGPointMake(500.0, 512.0);
}
completion:^(BOOL finished){
[UIView animateWithDuration:4.0
animations:^{
newImageView.center = CGPointMake(500.0, 512.0);
}];
}];
从上往下一个动作（默认是左上角，把要改变的值放在animations里）：
-(UIView *)myView
{
if (!_myView) {
_myView=[[UIView alloc]initWithFrame:CGRectZero];
_myView.backgroundColor=[UIColor redColor];
}
return _myView;
}
- (IBAction)BtnAction:(id)sender {
self.myView.frame = CGRectMake(0,44, 320, 0);
[self.view addSubview:self.myView];
[UIView animateWithDuration:0.3 animations:^{
self.myView.backgroundColor=[UIColor redColor];
self.myView.frame = CGRectMake(0,44, 320, 100);
} completion:^(BOOL finished) {
}];
}
3：UIView 的旋转和缩放
label.transform = CGAffineTransformMakeRotation(90 *M_PI / 180.0); //顺时针旋转 90度 label.transform = CGAffineTransformMakeRotation(180 *M_PI / 180.0); //顺时针 旋转180度 label.transform = CGAffineTransformMakeRotation(270 *M_PI / 180.0); //顺时针旋转270度 CGAffineTransform transform = label.transform; transform = CGAffineTransformScale(transform, 2,0.5);//前面的2表示横向放大2倍，后边的0.5表示纵向缩小一半 label.transform = transform;
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原文地址：http://www.cnblogs.com/LiLihongqiang/p/5796870.html
