从资产目录中的WebView加载HTML

问题描述

我试图从资产目录中加载HTML页面。我想这一点，但它失败。

I'm trying to load a html page from the assets directory. I tried this, but it fails.

public class ViewWeb extends Activity {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        WebView wv;
        wv = (WebView) findViewById(R.id.webView1);
        wv.loadUrl("file:///android_asset/aboutcertified.html");   // fails here
        setContentView(R.layout.webview);
    }
}

我真的没有得到任何有说服力的错误在LogCat中...

I don't really get any telling errors in LogCat...

推荐答案

您所得到的web视图设置内容视图以便WV可能是空了。

You are getting the WebView before setting the Content view so the wv is probably null.

public class ViewWeb extends Activity {
        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.webview);
            WebView wv;
            wv = (WebView) findViewById(R.id.webView1);
            wv.loadUrl("file:///android_asset/aboutcertified.html");   // now it will not fail here
        }
    }

这篇关于从资产目录中的WebView加载HTML的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！