UIWebView 是苹果提供的用来展示网页的UI控件,它也是最占内存的控件。
iOS8.0之后出现了webkit框架,WKWebView相比UIWebView节省了1/4~1/3的内存,速度快,但是没缓存功能。
对于一些购物类app网页的展示是必不可免的,因此UIWebView对于我们来说也是必须精通的控件。
下面给大家先简单展示一下UIWebView。
//
// ViewController.m
// UIWebView
// #import "ViewController.h" @interface ViewController ()<UIWebViewDelegate> @property (nonatomic, strong) UIWebView * webView; @end @implementation ViewController - (void)viewDidLoad {
[super viewDidLoad];
//初始化webView
_webView = [[UIWebView alloc]initWithFrame:CGRectMake(, , self.view.frame.size.width, CGRectGetHeight(self.view.frame) - )]; NSURL * url = [NSURL URLWithString:@"http://www.baidu.com"]; [_webView loadRequest:[NSURLRequest requestWithURL:url]];
//把webView添加到View上
[self.view addSubview:_webView]; }
/*
- (void)reload; 刷新
- (void)stopLoading; 停止load - (void)goBack; 返回
- (void)goForward; 前进
*/
@end
UIWebView
运行结果
接下来我们来一个Webkit的demo
//
// ViewController.m
// 句子迷
//
// Created by ma c on 16/4/7.
// Copyright © 2016年 晓宁. All rights reserved.
// #import "ViewController.h"
#import <WebKit/WebKit.h>
@interface ViewController ()
@property(nonatomic,strong)WKWebView*webView;
@end @implementation ViewController - (void)viewDidLoad {
[super viewDidLoad];
self.webView=[[WKWebView alloc]initWithFrame:self.view.bounds];
[self.view addSubview:self.webView];
[self.webView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@"http://m.juzimi.com"]]];
// Do any additional setup after loading the view, typically from a nib.
} - (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
} @end
WebKit
展示结果如下