objective-c - 如何在 OSX 上自动关闭 NSAlert？

Question

我想创建 NSAlert(弹出)显示然后自动关闭。同样点击 Button，它显示弹出窗口 Scanning...，在找到任何项目后，弹出窗口 Scanning auto dismiss。当弹出窗口显示时，用户无法单击我的应用程序上的任何按钮。我怎样才能做到这一点？非常感谢。

Answer 1

下面的代码可以帮到你

- (IBAction)showAlert:(id)sender {
    //display the alert
    self.myAlert = [NSAlert alertWithMessageText:@"Sample Test" defaultButton:@"OK" alternateButton:@"DO Nothing" otherButton:@"CANCEL" informativeTextWithFormat:@"TEST",nil];
    [self.myAlert beginSheetModalForWindow:[self window]
                         modalDelegate:self
                        didEndSelector:@selector(errorAlertDidEnd:returnCode:contextInfo:)
                           contextInfo:nil];

    NSArray *buttonArray = [self.myAlert buttons];
    NSLog(@"Button Arrays %@",buttonArray);

    //Close by itself without a mouse click by the user
    //Assuming the Default Button as the Second one "Do Nothing
    NSButton *myBtn = [buttonArray objectAtIndex:2];
    [myBtn performClick:self.myAlert];