一个包含基本功能的WKWebView
2017-08-29 本文已影响0人
有梦想的鸟
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包含的功能
- 进度条
- URL拦截
- 点击返回按钮回退一页
//
// WebLinkViewController.m
// CubeSugarEnglishStudent
//
// Created by seekmac002 on 2017/7/27.
// Copyright © 2017年 Netease. All rights reserved.
//
#import "WebLinkViewController.h"
#import "UIBarButtonItem+Extension.h"
#import "NSString+HMString.h"
#import "NTESPersonalCardViewController.h"
@interface WebLinkViewController ()<WKNavigationDelegate>
@property (nonatomic, strong) UIProgressView *progressView;//设置加载进度条
@end
@implementation WebLinkViewController
-(instancetype)initWithTitle:(NSString *)title urlString:(NSString *)urlString{
if (self = [super init]) {
_navTitle = title;
_urlString = urlString;
}
return self;
}
-(instancetype)initWithTitle:(NSString *)title urlString:(NSString *)urlString goBackBlock:(goBackBlock)goBackBlock{
if (self = [super init]) {
_navTitle = title;
_urlString = urlString;
_goBackBlock = goBackBlock;
}
return self;
}
- (void)viewDidLoad {
[super viewDidLoad];
self.title = self.navTitle;
self.navigationItem.leftBarButtonItem=[UIBarButtonItem itemWithTarget:self action:@selector(comeBack) image:@"btn_back_normal" highImage:@"btn_back_normal"];
WKWebViewConfiguration *configuration = [[WKWebViewConfiguration alloc]init];
self.webView=[[WKWebView alloc]initWithFrame:CGRectMake(0, 0, WIDTH, HEIGHT-64) configuration:configuration];
self.webView.scrollView.showsHorizontalScrollIndicator=NO;
self.webView.scrollView.showsVerticalScrollIndicator=NO;
self.webView.navigationDelegate=self;
[self.webView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:_urlString]]];
[self.webView addObserver:self
forKeyPath:NSStringFromSelector(@selector(estimatedProgress))
options:0
context:nil];
[self.webView addObserver:self forKeyPath:@"title" options:NSKeyValueObservingOptionNew context:nil];
[self.view addSubview:self.webView];
}
-(UIProgressView *)progressView{
if (!_progressView) {
_progressView = [[UIProgressView alloc]initWithProgressViewStyle:UIProgressViewStyleDefault];
_progressView.frame = CGRectMake(0, 0, WIDTH, 5);
[_progressView setTrackTintColor:[UIColor colorWithRed:240.0/255
green:240.0/255
blue:240.0/255
alpha:1.0]];
_progressView.progressTintColor = [UIColor orangeColor];
// [self.view addSubview:_progressView];
}
return _progressView;
}
//kvo 监听进度
-(void)observeValueForKeyPath:(NSString *)keyPath
ofObject:(id)object
change:(NSDictionary<NSKeyValueChangeKey,id> *)change
context:(void *)context{
if ([keyPath isEqualToString:NSStringFromSelector(@selector(estimatedProgress))]
&& object == self.webView) {
[self.progressView setAlpha:1.0f];
BOOL animated = self.webView.estimatedProgress > self.progressView.progress;
[self.progressView setProgress:self.webView.estimatedProgress
animated:animated];
if (self.webView.estimatedProgress >= 1.0f) {
[UIView animateWithDuration:0.3f
delay:0.3f
options:UIViewAnimationOptionCurveEaseOut
animations:^{
[self.progressView setAlpha:0.0f];
}
completion:^(BOOL finished) {
[self.progressView setProgress:0.0f animated:NO];
}];
}
}else if([keyPath isEqualToString:@"title"]){
if ([self.webView.title includeChinese]) {
self.navigationItem.title = self.webView.title;
}else{
self.navigationItem.title = self.navTitle;
}
}else{
[super observeValueForKeyPath:keyPath
ofObject:object
change:change
context:context];
}
}
-(void)dealloc{
[self.webView removeObserver:self forKeyPath:NSStringFromSelector(@selector(estimatedProgress))];
[[NSNotificationCenter defaultCenter] removeObserver:self];
[self.webView removeObserver:self forKeyPath:NSStringFromSelector(@selector(title))];
}
//点击返回按钮
- (void)comeBack
{
if (self.webView.canGoBack) {
[self.webView goBack];
}else{
[self.navigationController popViewControllerAnimated:YES];
if (_goBackBlock) {
_goBackBlock();
}
}
}
#pragma mark --- webkit delegate
/*! @abstract Invoked when a main frame navigation starts.
@param webView The web view invoking the delegate method.
@param navigation The navigation.
*/
- (void)webView:(WKWebView *)webView didStartProvisionalNavigation:(null_unspecified WKNavigation *)navigation{
[self showWithStatus:@""];
}
/*! @abstract Invoked when a server redirect is received for the main
frame.
@param webView The web view invoking the delegate method.
@param navigation The navigation.
*/
- (void)webView:(WKWebView *)webView didReceiveServerRedirectForProvisionalNavigation:(null_unspecified WKNavigation *)navigation{
}
/*! @abstract Invoked when an error occurs while starting to load data for
the main frame.
@param webView The web view invoking the delegate method.
@param navigation The navigation.
@param error The error that occurred.
*/
- (void)webView:(WKWebView *)webView didFailProvisionalNavigation:(null_unspecified WKNavigation *)navigation withError:(NSError *)error{
[self dismiss];
[self showErrorWithStatus:[GlobalFile getDataFail]];
}
/*! @abstract Invoked when content starts arriving for the main frame.
@param webView The web view invoking the delegate method.
@param navigation The navigation.
*/
- (void)webView:(WKWebView *)webView didCommitNavigation:(null_unspecified WKNavigation *)navigation{
}
/*! @abstract Invoked when a main frame navigation completes.
@param webView The web view invoking the delegate method.
@param navigation The navigation.
*/
- (void)webView:(WKWebView *)webView didFinishNavigation:(null_unspecified WKNavigation *)navigation{
[self dismiss];
}
/*! @abstract Invoked when an error occurs during a committed main frame
navigation.
@param webView The web view invoking the delegate method.
@param navigation The navigation.
@param error The error that occurred.
*/
- (void)webView:(WKWebView *)webView didFailNavigation:(null_unspecified WKNavigation *)navigation withError:(NSError *)error{
[self dismiss];
[self showErrorWithStatus:[GlobalFile getDataFail] ];
}
- (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler
{
NSURL *URL = navigationAction.request.URL;
NSString *scheme = [URL scheme];
NSString *resourceSpecifier = [URL resourceSpecifier];
if ([scheme isEqualToString:@"tel"]) {
// [self handleCustomAction:URL];
NTESPersonalCardViewController *vc = [[NTESPersonalCardViewController alloc] initWithUserId:resourceSpecifier];
vc.hidesBottomBarWhenPushed = YES;
[self.navigationController pushViewController:vc animated:YES];
decisionHandler(WKNavigationActionPolicyCancel);
return;
}
decisionHandler(WKNavigationActionPolicyAllow);
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
/*
#pragma mark - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
// Get the new view controller using [segue destinationViewController].
// Pass the selected object to the new view controller.
}
*/
@end
