iOS開發之快顯視窗執行個體

來源:互聯網
上載者:User


思路是這個交談視窗,其實也是一個ViewController, 假設是ModalViewController
代碼如下

// 判斷系統版本#define iOSVersionGreaterThanOrEqualTo(v)     ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] != NSOrderedAscending) //  按鈕觸發事件- (void)buttonPressed:(id)sender    ModalViewController *modalVC = [[ModalViewController alloc] init];    modalVC.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;    if ( iOSVersionGreaterThanOrEqualTo(@"8.0") ) {        modalVC.providesPresentationContextTransitionStyle = YES;        modalVC.definesPresentationContext = YES;        modalVC.modalPresentationStyle = UIModalPresentationOverCurrentContext;        [self presentViewController:modalVC animated:YES completion:nil];    } else {        self.view.window.rootViewController.modalPresentationStyle = UIModalPresentationCurrentContext;        [self presentViewController:modalVC animated:NO completion:nil];        self.view.window.rootViewController.modalPresentationStyle = UIModalPresentationFullScreen;    }}

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