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,
其中的behavior可設定animating屬性與hides when stopped,
本範例為點擊按鈕後啟動indicator,再次點擊則停止。
viewcontroller.m
#import "ViewController.h"
@interface ViewController ()
@property (weak, nonatomic) IBOutlet UIActivityIndicatorView *myIndicator;
- (IBAction)toClick:(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)toClick:(id)sender {
if (_myIndicator.isAnimating == YES) {
[_myIndicator stopAnimating];
}else{
[_myIndicator startAnimating];
}
}
@end
文章標籤
全站熱搜
留言列表