IOS - 删除WebView键盘上的工具条

UIWebView代码：

.h文件

#import "ZSSWebView.h"
@interface ZSSWebView (AccessoryHiding)
@property (nonatomic, assign) BOOL hackishlyHidesInputAccessoryView;
@end

.m文件

#import "ZSSWebView+AccessoryHiding.h"
#import <objc/runtime.h>
@implementation ZSSWebView (AccessoryHiding)
static const char * const hackishFixClassName = "UIWebBrowserViewMinusAccessoryView";
static Class hackishFixClass = Nil;
- (UIView *)hackishlyFoundBrowserView {
    UIScrollView *scrollView = self.scrollView;
    UIView *browserView = nil;
    for (UIView *subview in scrollView.subviews) {
        NSLog(@"%@",NSStringFromClass([subview class]));
        if ([NSStringFromClass([subview class]) hasPrefix:@"UIWebBrowserView"]) {
            browserView = subview;
            break;
        }
    }
    return browserView;
}

- (id)methodReturningNil {
    return nil;
}

- (void)ensureHackishSubclassExistsOfBrowserViewClass:(Class)browserViewClass {
    if (!hackishFixClass) {
        Class newClass = objc_allocateClassPair(browserViewClass, hackishFixClassName, 0);
        IMP nilImp = [self methodForSelector:@selector(methodReturningNil)];
        class_addMethod(newClass, @selector(inputAccessoryView), nilImp, "@@:");
        objc_registerClassPair(newClass);
        hackishFixClass = newClass;
    }
}

- (BOOL) hackishlyHidesInputAccessoryView {
    UIView *browserView = [self hackishlyFoundBrowserView];
    return [browserView class] == hackishFixClass;
}

- (void) setHackishlyHidesInputAccessoryView:(BOOL)value {
    UIView *browserView = [self hackishlyFoundBrowserView];
    if (browserView == nil) {
        return;
    }
    [self ensureHackishSubclassExistsOfBrowserViewClass:[browserView class]];
    if (value) {
        object_setClass(browserView, hackishFixClass);
    } else {
        Class normalClass = objc_getClass("UIWebBrowserView");
        object_setClass(browserView, normalClass);
    }
    [browserView reloadInputViews];
}
@end

WKWebView代码：

.h文件

#import "ZSSWebView.h"
@interface ZSSWebView (AccessoryHiding)
- (void)removeInputAccessoryViewFromWKWebView:(WKWebView *)webView;
@end

.m文件

#import "ZSSWebView+AccessoryHiding.h"
#import <objc/runtime.h>

@implementation ZSSWebView (AccessoryHiding)

- (id)inputAccessoryView {
    return nil;
}

- (void)removeInputAccessoryViewFromWKWebView:(WKWebView *)webView {
    UIView *targetView;
    for (UIView *view in webView.scrollView.subviews) {
        if([[view.class description] hasPrefix:@"WKContent"]) {
            targetView = view;
        }
    }
    if (!targetView) {
        return;
    }
    
    NSString *noInputAccessoryViewClassName = [NSString stringWithFormat:@"%@_NoInputAccessoryView", targetView.class.superclass];
    Class newClass = NSClassFromString(noInputAccessoryViewClassName);
    if(newClass == nil) {
        newClass = objc_allocateClassPair(targetView.class, [noInputAccessoryViewClassName cStringUsingEncoding:NSASCIIStringEncoding], 0);
        if(!newClass) {
            return;
        }
        Method method = class_getInstanceMethod([ZSSWebView class], @selector(inputAccessoryView));
        class_addMethod(newClass, @selector(inputAccessoryView), method_getImplementation(method), method_getTypeEncoding(method));
        objc_registerClassPair(newClass);
    }
    object_setClass(targetView, newClass);
}
@end