Will的部落格

UIPageControl用於提示此用者此頁面有多重顯示，
此元件的行為類似翻頁的動作，本範例為放置三張圖片，
滑動頁面與點擊UIPageControl替換圖片顯示，
並添加一個UIViewAnimationOptionTransitionFlipFromRight動畫效果。

UIPageControl用於提示此用者此頁面有多重顯示，
此元件的行為類似翻頁的動作，
本範例為放置三張圖片，點擊UIPageControl替換圖片顯示
#import "ViewController.h"

@interface ViewController ()

@property (weak, nonatomic) IBOutlet UIImageView *myImage;
- (IBAction)pageChanged:(UIPageControl*)sender;

@end

@implementation ViewController

- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
}

- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}

- (IBAction)pageChanged:(UIPageControl*)sender {

_myImage.image = [UIImage imageNamed:[NSString stringWithFormat:@"photo%ld.jpg",sender.currentPage+1]];

}
@end

此範例為點擊按鈕，顯示UIAlertView，
透過buttonIndex可得知點擊了哪個按鈕
viewController.m
#import "ViewController.h"

@interface ViewController ()

- (IBAction)toShow:(id)sender;

@end

@implementation ViewController

- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
}

- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}

- (IBAction)toShow:(id)sender {

UIAlertView *alertView = [[UIAlertView alloc]initWithTitle:@"alertView" message:@"plz choice" delegate:self cancelButtonTitle:@"cancle:" otherButtonTitles:@"save",@"load", nil];
[alertView show];
}

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{

NSLog(@"%ld",(long)buttonIndex);
}

@end

UIProgressView可顯示正工作正在進行的進度，
此範例為點擊按鈕，並借助NSTimer去增加progress得值，
讓UIProgressView執行結束並跳出alertView提示user工作已完成。
viewController.m

UIActivityIndicatorView是用於當執行一個複雜作業時，
可使用IndicatorView提示使用者現在正在執行一個複雜作業，
並提示使用者等待此作業完成。
storyboard可設定indicator的樣式、顏色、初始狀態、停止時隱藏等等，