GWT：如何将UiBinder xml布局添加到我的Widget？ [英] GWT: How can I add UiBinder xml layout to my Widget?

问题描述

我有一个按钮，它是GWT PushButton 的直接后裔。我想将UiBInder xml布局添加到我的按钮以简化其设计。我创建了 MyButton.ui.xml ，并且我有以下内容 MyButton ：

I have a button which is a direct descendant of GWT PushButton. I want to add UiBInder xml layout to my button to simplify its design. I have created MyButton.ui.xml and I have the following contents of MyButton:

class MyButton extends PushButton 
{

interface UI extends UiBinder<Widget, MyButton>
{
}

private static final UI ui = GWT.create(UI.class);

@UiConstructor
public MyButton() {
        super();
        ui.createAndBindUi(this);
}

(...)

}

问题是我的按钮没有被渲染。 GWT创建一些div并将输入元素放置在里面，但是我在uibinder xml文件中创建的布局未应用。哪里出错了？

The problem is that my button is not rendered. GWT creates some div and places input element inside, but the layout I have created inside my uibinder xml file is not applied. Where I went wrong?

推荐答案

我不太确定，但是，可能是因为您没有实现asWidget（ ）方法：

I am not really sure, but, may be it's because you don't implement the asWidget() method:

@Override
public Widget asWidget() {
    return widget;
}

小部件声明：

where widget is declared:

private final Widget widget;

并在您的构造函数中初始化为：

and initialized in you constructor as:

widget = ui.createAndBindUi(this);

希望这可以帮助您

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