Question

我想在调用API或任何后台方法时在uiview中添加一个加载器。它有任何默认值吗？或者我已经创建了自定义加载器。

Answer 1

试试这个：

{
    "environment": "PROD",
    "auto_renew_status": "false",
    "latest_expired_receipt_info": {
        "original_purchase_date_pst": "2018-01-25 11:59:25 America/Los_Angeles",
        "cancellation_date_ms": "1517150504000",
        "cancellation_reason": "0",
        "original_purchase_date_ms": "1516910365000",
        "expires_date_formatted": "2019-01-25 19:59:23 Etc/GMT",
        "is_in_intro_offer_period": "false",
        "purchase_date_ms": "1516910363000",
        "expires_date_formatted_pst": "2019-01-25 11:59:23 America/Los_Angeles",
        "is_trial_period": "false",
        "expires_date": "1548446363000",
        "cancellation_date": "2018-01-28 14:41:44 Etc/GMT",
        "purchase_date": "2018-01-25 19:59:23 Etc/GMT",
        "cancellation_date_pst": "2018-01-28 06:41:44 America/Los_Angeles",
        "purchase_date_pst": "2018-01-25 11:59:23 America/Los_Angeles",
        "original_purchase_date": "2018-01-25 19:59:25 Etc/GMT"
    },
    "cancellation_date_ms": "1517150504000"
}

现在可以在任何地方调用它 -

-(void)loaderType1 :(UIView *)View
{
    UIActivityIndicatorView *activityView = [[UIActivityIndicatorView alloc]
                                             initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge];

    activityView.center=View.center;
    activityView.color=(UIColor*)[UIColor blackColor]; //change color
    activityView.tag=10;
    [activityView startAnimating];
    //this is for freeze UI when loader appears
    //[[UIApplication sharedApplication] beginIgnoringInteractionEvents];      
    //this is for stop the previous action
    //[[UIApplication sharedApplication] endIgnoringInteractionEvents];
    [View addSubview:activityView];
    [View bringSubviewToFront:activityView];
}

删除装载程序：

[self loaderType1: self.view];

Answer 2

是的，iOS中有默认的activityIndicator。你可以这样添加。

    class ViewController: UIViewController {

        let activityIndicator = UIActivityIndicatorView()

        override func viewDidLoad() {
            super.viewDidLoad()

            activity.center = view.center

            // Customization
            activityIndicator.color                      = UIColor.blue
            activityIndicator.activityIndicatorViewStyle = .gray

            view.addSubview(activityIndicator)
        }
    }

开始动画制作你想要的地方：

activityIndicator.startAnimating()

停止动画制作你想要的地方：

activityIndicator.stopAnimating()

从视图中删除：

activityIndicator.removeFromSuperview()

Answer 3

@property UIActivityIndicatorView * spinner;
_spinner = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge];
[self.view addSubview:_spinner];
[_spinner setFrame:CGRectMake(0, 0, 100, 100)];
_spinner.center = self.view.center;
_spinner.transform = CGAffineTransformMakeScale(2, 2);
[_spinner setColor:[UIColor darkGrayColor]];

//Now start spinner where you want
[self.view bringSubviewToFront:_spinner];
[_spinner startAnimating];
//Stop spinner
dispatch_async(dispatch_get_main_queue(), ^{
    [_spinner stopAnimating];
});

Answer 4

试试这个，您可以在基本uiviewcontroller中编写/粘贴以下代码，并在需要显示/隐藏加载栏时调用相应的/当前viewcontroller。

请注意，我们可以使用UILabel播放/优化阻止视图，例如加载或自定义文本。

-(void)makeScreenBusy {
if(!self.spinner){
    [self createSpinner];
}
[self.view addSubview:self.blockerView];
[self.blockerView setAlpha:0];
self.spinner.center = self.blockerView.center;
[UIView animateWithDuration:kMinimumAnimationDuration animations:^{
    [self.blockerView setAlpha:0.5];
    [self.spinner startAnimating];
}];

}

-(void)makeScreenAvailable {
[UIView animateWithDuration:kMinimumAnimationDuration animations:^{
    [self.blockerView setAlpha:0];
    [self.spinner stopAnimating];
}completion:^(BOOL finished) {
    [self.blockerView removeFromSuperview];
}];

}

-(void)createSpinner {
[self.blockerView setFrame:[UIScreen mainScreen].bounds];
[self.blockerView setAlpha:0.5];

self.spinner = [[UIActivityIndicatorView alloc] init];
[self.spinner setBackgroundColor:[UIColor clearColor]];
[self.spinner setActivityIndicatorViewStyle:UIActivityIndicatorViewStyleWhite];
[self.blockerView addSubview:self.spinner];

}

iOS - 默认活动加载程序，如＆＃34;请稍候＆＃34;

4 个答案: