java 在自定义视图中获取上下文？
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Getting the context inside a custom view?
提问by soren.qvist
I have made a small custom view component:
我制作了一个小的自定义视图组件：
public class ActionBar extends RelativeLayout
{
public ActionBar(Context context, AttributeSet attrs)
{
super(context, attrs);
// .. custom logic here
}
private class homeButtonListener implements OnClickListener
{
@Override
public void onClick(View v)
{
// how do i get the context here?
}
}
}
Every ActionBar component comes with a home-button, so I thought it would be appropriate to put it's onClickListener inside the view definition itself. The button should return the user to the main activity when clicked, but I need a Context in order to start activities. Can I create a local reference to the context passed in the constructor, without running into a mess of memory leaks?
每个 ActionBar 组件都带有一个主页按钮，所以我认为将它的 onClickListener 放在视图定义本身中是合适的。单击该按钮时，应将用户返回到主活动，但我需要一个 Context 才能开始活动。我可以创建对构造函数中传递的上下文的本地引用，而不会遇到一团糟的内存泄漏吗？
回答by Noel
The view has a method to get the context. See the android API for getContext().
视图有一个获取上下文的方法。请参阅getContext()的 android API 。
