webview定义的两张方式:
1,是在xml文件里面进行定义;
![](https://images0.cnblogs.com/blog/554581/201505/142323379709917.png)
2,实在代码里面定义:
![](https://images0.cnblogs.com/blog/554581/201505/142323387515746.png)
3,在webview上显示内容必要的配置:
![](https://images0.cnblogs.com/blog/554581/201505/142323392829417.png)
4常见的设置:
是否支持javascript
![](https://images0.cnblogs.com/blog/554581/201505/142323398609073.png)
是否支持缩放,是否显示缩放工具
//支持javascript
web.getSettings().setJavaScriptEnabled(true);
// 设置可以支持缩放
web.getSettings().setSupportZoom(true);
// 设置出现缩放工具
web.getSettings().setBuiltInZoomControls(true);
//扩大比例的缩放
web.getSettings().setUseWideViewPort(true);
//自适应屏幕
web.getSettings().setLayoutAlgorithm(LayoutAlgorithm.SINGLE_COLUMN);
web.getSettings().setLoadWithOverviewMode(true);
设置默认字体大小
5,功能:
加载网页
![](https://images0.cnblogs.com/blog/554581/201505/142323403765217.png)
加载本地网页
![](https://images0.cnblogs.com/blog/554581/201505/142323408925658.png)
![](https://images0.cnblogs.com/blog/554581/201505/142323414239328.png)
加载数据
![](https://images0.cnblogs.com/blog/554581/201505/142323419851458.png)
![](https://images0.cnblogs.com/blog/554581/201505/142323441736355.png)
6,点击back键回退返回上一页面:
![](https://images0.cnblogs.com/blog/554581/201505/142323451428426.png)