使用 Mono for Android {example} 以编程方式/动态方式将按钮控件添加到视图 [英] Programmatically/Dynamically Add Button Controls to View using Mono for Android {example}
问题描述
正在寻找如何从 Activity 动态添加控件的示例.
Looking for an example of how to dynamically add controls from the activity.
在一个活动中,我们称之为Activity2.cs",动态地将可变数量的按钮添加到MyView.axml"中.
Inside an activity, lets call it "Activity2.cs", dynamically add a variable number of buttons to "MyView.axml".
我正在寻找如下代码(实际工作的代码除外):
I'm looking for code like below (except code that actually works):
string[] textArray = new string[] { "button1", "button2", "button3", "button4" };
int counter= 3;
for (int i = 0; i < length; i++)
{
var mytest = new button(this);
mytest.Text = textArray[i];
mytest.id= textArray[i];
View(MyView.axml).add(mytest);
}
结果是在视图底部添加了四个按钮.我可以找到有关如何在 Android 中动态添加控件的示例,但在使用 Mono for Android(即在 Visual Studio 中)时则无法找到.
The result would be that four buttons are added at the bottom of the view. I can find examples for how to dynamically add controls in Android, but not when using Mono for Android (ie in Visual Studio).
推荐答案
假设您的布局文件如下所示 (Main.axml):
Let's say your layout file looks like this (Main.axml):
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="@+id/Buttons">
</LinearLayout>
然后在您的活动中,您可以将 Button 对象添加到布局中,如下所示:
Then in your activity you can add Button objects to the layout like this:
[Activity(Label = "Buttons", MainLauncher = true, Icon = "@drawable/icon")]
public class ButtonActivity : Activity
{
protected override void OnCreate(Bundle bundle)
{
base.OnCreate(bundle);
SetContentView(Resource.Layout.Main);
var buttons = FindViewById<LinearLayout>(Resource.Id.Buttons);
for (int i = 1; i <= 4; i++)
{
var button = new Button(this);
button.Text = "Button " + i;
button.LayoutParameters = new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MatchParent,
ViewGroup.LayoutParams.WrapContent);
buttons.AddView(button);
}
}
}
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