erpsuiteios/common/customUI/commoneditor/CommonEditorWebCell.m

//
//  CommonEditorWebCell.m
//  RedAnt Mobile
//
//  Created by Jack on 2017/11/17.
//  Copyright © 2017年 Ray. All rights reserved.
//

#import "CommonEditorWebCell.h"

//@interface CommonEditorWebCell() <UIWebViewDelegate>

@interface CommonEditorWebCell() <WKNavigationDelegate>

@end

@implementation CommonEditorWebCell

- (void)awakeFromNib {
    [super awakeFromNib];
    // Initialization code
    [self setup];
}

- (void)setSelected:(BOOL)selected animated:(BOOL)animated {
    [super setSelected:selected animated:animated];

    // Configure the view for the selected state
}

- (instancetype)initWithCoder:(NSCoder *)aDecoder {
    if (self = [super initWithCoder:aDecoder]) {
        [self setup];
    }
    return self;
}

- (instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier {
    if (self = [super initWithStyle:style reuseIdentifier:reuseIdentifier]) {
        [self setup];
    }
    return self;
}

- (void)dealloc {
//    [self removeObserver:self forKeyPath:@"self.webview.scrollView.frame"];
}

- (void)setup {
    self.webview.scrollView.bounces=NO;
    self.webview.scrollView.directionalLockEnabled = true;
    
    self.webview.navigationDelegate = self;
    if (@available(iOS 11, *)) {
        self.webview.scrollView.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;
    }
    
//    [self addObserver:self forKeyPath:@"self.webview.scrollView.frame" options:NSKeyValueObservingOptionNew context:nil];
}

- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary<NSKeyValueChangeKey,id> *)change context:(void *)context {
    if ([keyPath isEqualToString:@"self.webview.scrollView.frame"]) {
        [self updateContentHeight];
    }
}

#pragma mark - Web Delegate

- (void)updateContentHeight {
    
    
//    return;
    [self.webview evaluateJavaScript:@"document.body.scrollHeight;" completionHandler:^(id _Nullable fitHeight, NSError * _Nullable error) {
//        NSString *h_str = [self.webview stringByEvaluatingJavaScriptFromString:@"document.body.scrollHeight;"];
        
        NSString *h_str =fitHeight;
        float h = [h_str floatValue];
        
        if (self.webDelegate) {
            [self.webDelegate commonEditorWebCell:self didChangeContentHeight:h];
        }
    }];
    

}
- (void)webView:(WKWebView *)webView didFinishNavigation:(WKNavigation *)navigation
{
    [self updateContentHeight];
        
    
}
//- (void)webViewDidFinishLoad:(UIWebView *)webView {
//    
//    [self updateContentHeight];
//}

//- (void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error {
////    [self updateContentHeight];
//}

@end