自定义webview，根据网页大小确定webview大小

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public class MyWebView extends WebView {

    public MyWebView(Context context) {

        super(context);

    }

    public MyWebView(Context context, AttributeSet attrs, int defStyle) {

        super(context, attrs, defStyle);

    }

    public MyWebView(Context context, AttributeSet attrs) {

        super(context, attrs);

    }

    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {

        int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2,

                MeasureSpec.AT_MOST);

        super.onMeasure(widthMeasureSpec, expandSpec);

    }

}