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85 lines
3.6 KiB
Objective-C
85 lines
3.6 KiB
Objective-C
//
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// Copyright (c) 2019 Open Whisper Systems. All rights reserved.
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//
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#import <objc/runtime.h>
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@implementation UIAlertController (iOS9)
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+ (void)load {
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static dispatch_once_t onceToken;
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dispatch_once(&onceToken, ^{
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// On iOS9, avoids an exception when presenting an alert controller.
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//
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// *** Assertion failure in -[UIAlertController supportedInterfaceOrientations], /BuildRoot/Library/Caches/com.apple.xbs/Sources/UIKit/UIKit-3512.30.14/UIAlertController.m:542
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// Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'UIAlertController:supportedInterfaceOrientations was invoked recursively!'
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//
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// I'm not sure when this was introduced, or the exact root casue, but this quick workaround
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// seems reasonable given the small size of our iOS9 userbase.
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if (@available(iOS 10, *)) {
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return;
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}
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Class class = [self class];
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// supportedInterfaceOrientation
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SEL originalOrientationSelector = @selector(supportedInterfaceOrientations);
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SEL swizzledOrientationSelector = @selector(ows_iOS9Alerts_swizzle_supportedInterfaceOrientation);
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Method originalOrientationMethod = class_getInstanceMethod(class, originalOrientationSelector);
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Method swizzledOrientationMethod = class_getInstanceMethod(class, swizzledOrientationSelector);
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BOOL didAddOrientationMethod = class_addMethod(class,
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originalOrientationSelector,
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method_getImplementation(swizzledOrientationMethod),
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method_getTypeEncoding(swizzledOrientationMethod));
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if (didAddOrientationMethod) {
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class_replaceMethod(class,
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swizzledOrientationSelector,
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method_getImplementation(originalOrientationMethod),
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method_getTypeEncoding(originalOrientationMethod));
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} else {
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method_exchangeImplementations(originalOrientationMethod, swizzledOrientationMethod);
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}
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// shouldAutorotate
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SEL originalAutorotateSelector = @selector(shouldAutorotate);
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SEL swizzledAutorotateSelector = @selector(ows_iOS9Alerts_swizzle_shouldAutorotate);
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Method originalAutorotateMethod = class_getInstanceMethod(class, originalAutorotateSelector);
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Method swizzledAutorotateMethod = class_getInstanceMethod(class, swizzledAutorotateSelector);
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BOOL didAddAutorotateMethod = class_addMethod(class,
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originalAutorotateSelector,
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method_getImplementation(swizzledAutorotateMethod),
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method_getTypeEncoding(swizzledAutorotateMethod));
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if (didAddAutorotateMethod) {
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class_replaceMethod(class,
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swizzledAutorotateSelector,
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method_getImplementation(originalAutorotateMethod),
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method_getTypeEncoding(originalAutorotateMethod));
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} else {
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method_exchangeImplementations(originalAutorotateMethod, swizzledAutorotateMethod);
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}
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});
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}
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#pragma mark - Method Swizzling
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- (UIInterfaceOrientationMask)ows_iOS9Alerts_swizzle_supportedInterfaceOrientation
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{
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OWSLogInfo(@"swizzled");
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return UIInterfaceOrientationMaskAllButUpsideDown;
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}
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- (BOOL)ows_iOS9Alerts_swizzle_shouldAutorotate
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{
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OWSLogInfo(@"swizzled");
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return NO;
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}
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@end
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