一共有2中方法：

1.

mWebView.loadUrl("file:///android_asset/index.html");

2,.

private void ProcessWebString() {

// 加载 asset 文件

String tpl = getFromAssets("index.html");

mWebView.loadDataWithBaseURL(null, tpl, "text/html", "utf-8", null);

}

/*

* 获取html文件

*/

public String getFromAssets(String fileName) {

try {

InputStreamReader inputReader = new InputStreamReader(

getResources().getAssets().open(fileName));

BufferedReader bufReader = new BufferedReader(inputReader);

String line = "";

String Result = "";

while ((line = bufReader.readLine()) != null)

Result += line;

return Result;

} catch (Exception e) {

e.printStackTrace();

}

return "";

}