随着iOS8推出WKWebVIew之后，很多开发者开始试着用此来替换UIWebView了。闲话少说、直接上代码。
.h
#import
@interface WebViewController : UIViewController
//网页链接
@property(nonatomic,copy)NSString *urlStr;
//html内容
@property(nonatomic,copy)NSString *content;
@end
.m
// 首先引入头文件
#import
static void *WKWebBrowserContext = &WKWebBrowserContext;
@interface WebViewController ()
@property(nonatomic,strong)WKWebView *contentWebView;
@property(nonatomic,strong)UIProgressView *progressView;
@end
@implementation WebViewController
- (void)viewDidLoad {
[super viewDidLoad];
[self.view addSubview:self.contentWebView];
[self.view addSubview:self.progressView];
[self layoutConstraints];
[self loadData];
}
- (void)layoutConstraints {
[self.contentWebView mas_makeConstraints:^(MASConstraintMaker *make) {
make.edges.equalTo(self.view).insets(UIEdgeInsetsMake(64, 0, 0, 0));
}];
[self.progressView mas_makeConstraints:^(MASConstraintMaker *make) {
make.top.mas_equalTo(0);
make.left.right.mas_equalTo(self.view);
make.height.mas_equalTo(2);
}];
}
- (void)loadData {
if (self.urlStr.length) {
NSURL* url=[NSURL URLWithString:self.urlStr relativeToURL:[NSURL URLWithString:@"http://"]];
NSURLRequest *request =[NSURLRequest requestWithURL:url];
[self.contentWebView loadRequest:request];
return;
}
if (self.content.length) {
[self.contentWebView loadHTMLString:self.content baseURL:nil];
return;
}
}
//- (void)leftBtnAction {
// 网页内可以返回
// if ([self.contentWebView canGoBack]) {
// [self.contentWebView goBack];
// }else {
// [AppCommon popViewControllerAnimated:YES];
// }
//}
#pragma mark - WKNavigationDelegate
//开始加载
- (void)webView:(WKWebView *)webView didStartProvisionalNavigation:(WKNavigation *)navigation{
//开始加载的时候，让加载进度条显示
self.progressView.hidden = NO;
}
//网页加载完成
- (void)webView:(WKWebView *)webView didFinishNavigation:(WKNavigation *)navigation{
// 获取加载网页的标题
self.titleLabel.text = self.contentWebView.title;
}
//内容返回时调用
- (void)webView:(WKWebView *)webView didCommitNavigation:(WKNavigation *)navigation {
}
//服务器请求跳转的时候调用
- (void)webView:(WKWebView *)webView didReceiveServerRedirectForProvisionalNavigation:(WKNavigation *)navigation {
}
// 内容加载失败时候调用
- (void)webView:(WKWebView *)webView didFailProvisionalNavigation:(WKNavigation *)navigation withError:(NSError *)error{
}
- (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler {
//如果是跳转一个新页面
if (navigationAction.targetFrame == nil) {
[webView loadRequest:navigationAction.request];
}
NSURL *URL = navigationAction.request.URL;
[self dealSomeThing:URL];
decisionHandler(WKNavigationActionPolicyAllow);
}
- (void)dealSomeThing:(NSURL *)url{
NSString *scheme = [url scheme];
NSString *resourceSpecifier = [url resourceSpecifier];
if ([scheme isEqualToString:@"tel"]) {
NSString *callPhone = [NSString stringWithFormat:@"tel://%@", resourceSpecifier];
/// 防止iOS 10及其之后，拨打电话系统弹出框延迟出现
dispatch_async(dispatch_get_global_queue(0, 0), ^{
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:callPhone]];
});
}
}
//进度条
- (void)webViewWebContentProcessDidTerminate:(WKWebView *)webView {
}
//KVO监听进度条
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context {
if ([keyPath isEqualToString:NSStringFromSelector(@selector(estimatedProgress))] && object == self.contentWebView) {
[self.progressView setAlpha:1.0f];
BOOL animated = self.contentWebView.estimatedProgress > self.progressView.progress;
[self.progressView setProgress:self.contentWebView.estimatedProgress animated:animated];
// Once complete, fade out UIProgressView
if(self.contentWebView.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 {
[super observeValueForKeyPath:keyPath ofObject:object change:change context:context];
}
}
#pragma mark - getters and setters
- (WKWebView *)contentWebView {
if (!_contentWebView) {
_contentWebView = [[WKWebView alloc] init];
_contentWebView.backgroundColor = [UIColor whiteColor];
_contentWebView.opaque = YES;
//适应你设定的尺寸
[_contentWebView sizeToFit];
_contentWebView.scrollView.showsVerticalScrollIndicator = NO;
// 设置代理
_contentWebView.navigationDelegate = self;
//kvo 添加进度监控
[_contentWebView addObserver:self forKeyPath:NSStringFromSelector(@selector(estimatedProgress)) options:0 context:WKWebBrowserContext];
//设置网页的配置文件
WKWebViewConfiguration * Configuration = [[WKWebViewConfiguration alloc]init];
// 此处一定要做判断，因为是iOS9之后才有的方法，否则在iOS8下会崩溃
if ([[UIDevice currentDevice].systemVersion floatValue] >= 9.0) {
//允许视频播放
Configuration.allowsAirPlayForMediaPlayback = YES;
// 允许在线播放
Configuration.allowsInlineMediaPlayback = YES;
//开启手势触摸 默认设置就是NO。在ios8系统中会导致手势问题，程序崩溃
_contentWebView.allowsBackForwardNavigationGestures = YES;
}
// 允许可以与网页交互，选择视图
Configuration.selectionGranularity = YES;
// web内容处理池
Configuration.processPool = [[WKProcessPool alloc] init];
//自定义配置,一般用于 js调用oc方法(OC拦截URL中的数据做自定义操作)
WKUserContentController * UserContentController = [[WKUserContentController alloc]init];
// 是否支持记忆读取
Configuration.suppressesIncrementalRendering = YES;
// 允许用户更改网页的设置
Configuration.userContentController = UserContentController;
}
return _contentWebView;
}
- (UIProgressView *)progressView {
if (!_progressView) {
_progressView = [[UIProgressView alloc]initWithProgressViewStyle:UIProgressViewStyleDefault];
[_progressView setTrackTintColor:[UIColor colorWithRed:240.0/255 green:240.0/255 blue:240.0/255 alpha:1.0]];
_progressView.progressTintColor = [UIColor redColor];
}
return _progressView;
}
// 记得dealloc
- (void)dealloc {
[self.contentWebView removeObserver:self forKeyPath:NSStringFromSelector(@selector(estimatedProgress))];
}
使用起来也是非常方便：
WebViewController *webVC = [[WebViewController alloc] init];
//网页链接(在.h文件中已声明)
webVC.urlStr = @"";
[self.navigationController pushViewController:webVC animated:YES];
基本使用的也就是这些方法，代码就不发了，直接cpoy即可。
本文没有提到，如何用WKWebView加载html本地文件，因为iOS8根iOS9+系统不一样，会单独拿一篇文章出来。