我想要以下屏幕:
当我单击IMAGE 1
和IMAGE 2
按钮时,我希望在IMAGE ZONE
中分别显示Image1.jpg
和Image2.jpg
。我希望Image1.jpg
和Image2.jpg
位于不同的片段中,并在单击按钮时替换这些片段,而不是仅在单击按钮时更改android:src
中ImageView
的IMAGE ZONE
。我希望Image1.jpg
是打开活动时出现的第一张图像。我在Xamarin.Android
您可以先创建两个Fragment
及其xml
。
FragmentOne:
public class Fragment1 : Android.Support.V4.App.Fragment
{
public override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
// Create your fragment here
}
public override View OnCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
// Use this to return your custom view for this Fragment
return inflater.Inflate(Resource.Layout.layoutFragment1, container, false);
//return base.OnCreateView(inflater, container, savedInstanceState);
}
}
及其xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/fragment1">
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="fitXY"
android:src="@drawable/th2"/>
</LinearLayout>
FragementTwo:
public class Fragment2 : Android.Support.V4.App.Fragment
{
public override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
// Create your fragment here
}
public override View OnCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
// Use this to return your custom view for this Fragment
return inflater.Inflate(Resource.Layout.layoutFragment2, container, false);
//return base.OnCreateView(inflater, container, savedInstanceState);
}
}
及其xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/fragment2">
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="fitXY"
android:src="@drawable/th2"/>
</LinearLayout>
然后在MainActivity中,可以如下设置其xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
android:gravity="center_horizontal"
android:layout_width="match_parent"
android:layout_height="80dip"
android:orientation="horizontal">
<Button
android:id="@+id/buttonone"
android:layout_width="150dip"
android:layout_height="80dip"
android:text="FragmentOne"/>
<Button
android:id="@+id/buttontwo"
android:layout_width="150dip"
android:layout_height="80dip"
android:text="FragmentTwo"/>
</LinearLayout>
<RelativeLayout
android:id="@+id/containerView"
android:layout_width="match_parent"
android:layout_height="430dip">
</RelativeLayout>
</LinearLayout>
最后,在MainActivity.cs中实现此功能:
public class MainActivity : AppCompatActivity
{
Android.Support.V4.App.Fragment fragmentOne;
Android.Support.V4.App.Fragment fragmentTwo;
Android.Support.V4.App.FragmentTransaction fragmentManager;
[Obsolete]
protected override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
Xamarin.Essentials.Platform.Init(this, savedInstanceState);
// Set our view from the "main" layout resource
SetContentView(Resource.Layout.activity_main);
Button buttonone = FindViewById<Button>(Resource.Id.buttonone);
buttonone.Click += Buttonone_Click;
Button buttontwo = FindViewById<Button>(Resource.Id.buttontwo);
buttontwo.Click += Buttontwo_Click;
fragmentOne = new Fragment1();
fragmentTwo = new Fragment2();
//fragmentManager = FragmentManager.BeginTransaction();
fragmentManager = SupportFragmentManager.BeginTransaction();
fragmentManager.Add(Resource.Id.containerView, fragmentOne);
fragmentManager.Add(Resource.Id.containerView, fragmentTwo);
fragmentManager.Commit();
}
private void Buttonone_Click(object sender, System.EventArgs e)
{
//throw new System.NotImplementedException();
Console.WriteLine("Buttonone_Click");
fragmentManager = SupportFragmentManager.BeginTransaction();
fragmentManager.Hide(fragmentTwo);
fragmentManager.Show(fragmentOne);
fragmentManager.Commit();
//fragmentManager.Replace(Resource.Id.containerView, fragmentOne);
//fragmentManager.Commit();
}
private void Buttontwo_Click(object sender, System.EventArgs e)
{
//throw new System.NotImplementedException();
Console.WriteLine("Buttontwo_Click");
fragmentManager = SupportFragmentManager.BeginTransaction();
fragmentManager.Hide(fragmentOne);
fragmentManager.Show(fragmentTwo);
fragmentManager.Commit();
//fragmentManager.Replace(Resource.Id.containerView, fragmentTwo);
//fragmentManager.Commit();
}
}
效果如下: