最近升級了Xcode11,也使用了ios13,以前的項目好好的,突然在ios13上就閃退了,可能跟xcode版本和ios13都有關係。個人認爲xcode11有點不穩定。
如果閃退報以下錯誤:
這個問題是由於ios13取消了kvc導致的。
解決辦法:可以把如下代碼作爲NSObject擴展類添加到項目中,引用即可。
+ (void)load{
SEL originalSelector = @selector(doesNotRecognizeSelector:);
SEL swizzledSelector = @selector(sw_doesNotRecognizeSelector:);
Method originalMethod = class_getClassMethod(self, originalSelector);
Method swizzledMethod = class_getClassMethod(self, swizzledSelector);
if(class_addMethod(self, originalSelector, method_getImplementation(swizzledMethod), method_getTypeEncoding(swizzledMethod))){
class_replaceMethod(self, swizzledSelector, method_getImplementation(originalMethod), method_getTypeEncoding(originalMethod));
}else{
method_exchangeImplementations(originalMethod, swizzledMethod);
}
}
+ (void)sw_doesNotRecognizeSelector:(SEL)aSelector{
//處理 _LSDefaults 崩潰問題
if([[self description] isEqualToString:@"_LSDefaults"] && (aSelector == @selector(sharedInstance))){
//冷處理...
return;
}
[self sw_doesNotRecognizeSelector:aSelector];
}
用運行時實現方法交換即可