98 lines
2.9 KiB
Objective-C
98 lines
2.9 KiB
Objective-C
//
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// Copyright 2020 The Matrix.org Foundation C.I.C
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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#import "MXKActivityHandlingViewController.h"
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@interface MXKActivityHandlingViewController ()
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@end
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@implementation MXKActivityHandlingViewController
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@synthesize activityIndicator;
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#pragma mark -
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- (void)viewDidLoad
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{
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[super viewDidLoad];
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if ([self providesCustomActivityIndicator]) {
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// If a subclass provides custom activity indicator, the default one will not even be initialized.
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return;
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}
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// Add default activity indicator
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activityIndicator = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhite];
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activityIndicator.backgroundColor = [UIColor colorWithRed:0.8 green:0.8 blue:0.8 alpha:1.0];
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activityIndicator.autoresizingMask = UIViewAutoresizingFlexibleTopMargin | UIViewAutoresizingFlexibleBottomMargin | UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleRightMargin;
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activityIndicator.hidesWhenStopped = YES;
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CGRect frame = activityIndicator.frame;
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frame.size.width += 30;
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frame.size.height += 30;
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activityIndicator.bounds = frame;
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[activityIndicator.layer setCornerRadius:5];
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activityIndicator.center = self.view.center;
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[self.view addSubview:activityIndicator];
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}
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- (void)dealloc
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{
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if (activityIndicator)
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{
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[activityIndicator removeFromSuperview];
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activityIndicator = nil;
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}
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}
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#pragma mark - Activity indicator
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- (BOOL)providesCustomActivityIndicator {
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return NO;
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}
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- (void)startActivityIndicator
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{
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if (activityIndicator && ![self providesCustomActivityIndicator])
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{
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[self.view bringSubviewToFront:activityIndicator];
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[activityIndicator startAnimating];
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// Show the loading wheel after a delay so that if the caller calls stopActivityIndicator
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// in a short future, the loading wheel will not be displayed to the end user.
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activityIndicator.alpha = 0;
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[UIView animateWithDuration:0.3 delay:0.3 options:UIViewAnimationOptionBeginFromCurrentState animations:^{
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self->activityIndicator.alpha = 1;
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} completion:^(BOOL finished)
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{
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}];
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}
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}
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- (BOOL)canStopActivityIndicator {
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return YES;
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}
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- (void)stopActivityIndicator
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{
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if ([self canStopActivityIndicator]) {
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[activityIndicator stopAnimating];
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}
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}
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@end
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