是否可以允许片段旋转而不是父片段 activity？

Question

我有一个 Activity 和一个全屏片段，它继承自 AppCompatDialogFragment。在 Activity 上创建静态实例并调用 Show 方法启动它。

我希望片段能够旋转但 Activity。

我尝试在 OnCreate 的覆盖中将 activity 的请求方向设置为 'Portrait'，并在片段的 OnCreate 中再次将其设置为 'Unspecified'。问题是当屏幕旋转时，Activity 被重新创建，片段的 OnCreate 在 Activity.w

的 OnCreate 之前被调用

感谢任何帮助。

Answer 1

I have an Activity and a fullscreen fragment, which inherits from AppCompatDialogFragment. A static instance is created on the Activity and the Show method is called to launch it.

I'd like the fragment to be able to rotate but not the Activity.

只需为片段的旋转赋值即可：

public class MainActivity : AppCompatActivity
{
    AppCompatDialogFragment testFragment;
    protected override void OnCreate(Bundle savedInstanceState)
    {
        base.OnCreate(savedInstanceState);

        // Set our view from the "main" layout resource
        SetContentView(Resource.Layout.Main);
        testFragment = new TestFragment();
        testFragment.Show(SupportFragmentManager, "abc");
    }
 }

并且在Fragment中我设置了一个按钮，点击时我将Fragment的Rotation设置为增加5：

public class TestFragment : AppCompatDialogFragment
{
    Button btnClick;
    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.YourFragment, container, false);

       View view=inflater.Inflate(Resource.Layout.test_fragment, container, false);
        btnClick = view.FindViewById<Button>(Resource.Id.btnClick);
        btnClick.Click += BtnClick_Click;
        return view;
    }

    private void BtnClick_Click(object sender, EventArgs e)
    {
        this.View.Rotation += 5f;
    }
}

注意：您必须管理片段的大小，以防视图在旋转后超出边界。

是否可以允许片段旋转而不是父片段 activity？

Is it possible to allow a fragment to rotate and not the parent activity?

android

screen-orientation

xamarin.android

android-fragments

xamarin