Android:如何以编程方式添加要查看的按钮 [英] Android: How to programmatically add button to view

问题描述

在我的 Android 活动中，我创建了一个扩展 SurfaceView 的自定义视图(使用 MonoDroid 在语法上有细微的变化):

In my Android activity, I create a custom view that extends SurfaceView (using MonoDroid so slight variations in syntax):

class FriendsView : SurfaceView
{
    ...

    public FriendsView(Context context) : base(context)
    {

        ... create my custom view ...

    }


}

在我的 Activity 类中，我将内容视图设置为视图:

In my Activity class, I set the content view to the view:

protected override void OnCreate(Bundle bundle)
{

    base.OnCreate(bundle);

    ViewGroup.LayoutParams layoutParams = new ViewGroup.LayoutParams(ViewGroup.LayoutParams.FillParent, ViewGroup.LayoutParams.FillParent);

    FriendsView friendsView = new FriendsView(this);

    SetContentView(friendsView, layoutParams);

}

我想在视图中添加一个按钮，但不知道如何执行此操作.我读过的所有内容都是从 main.xml 的角度开始的，但我不知道如何使用它来声明在我的视图中可见的按钮.同样，我在 Activity 或 View 类中都找不到允许我以编程方式添加 Button 对象的方法.

I want to add a button to the view, but cannot work out how to do this. Everything I have read starts from the point of view of the main.xml, but I don't see how to use this to declare a button which is visible in my view. Equally, I cannot find a method in either Activity or View classes which lets me add a Button object programatically.

我确信我在概念上遗漏了一些东西，但欢迎任何帮助让我朝着正确的方向前进.

I feel sure I am missing something conceptually, but would welcome any help to get me going in the right direction.

推荐答案

如果我没理解错，你看到你的朋友视图就好了，但是你想给它添加一个按钮?我不知道你的 FriendsView 是什么样的 View，但假设它是你可以添加孩子的东西(比如 linearLayout 或其他东西)，你应该能够做到这一点(只是从我的头顶)

If I understand correctly you see your friendsView just fine, but you want to add a button to it? I don't know what kind of View your FriendsView is, but assuming it is something you can add childs to (like a linearLayout or something), you should be able to do this (just from the top of my head)

 //assuming you have a friendsView object that is some sort of Layout.
 Button yourButton = new ImageButton(this);
 //do stuff like add text and listeners.

 friendsView.addView(yourButton);

如果你想在friendsView中添加一些其他元素，你可以使用findViewById()找到它(如果你想像这样找到它们，则将id添加到你的元素中)

If there is some other element in friendsView you want to add a child to, you can just find it using findViewById() (add ids to your elements if you want to find them like this)

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