Question

我正在尝试从MvxTabActivity迁移到新的ViewPager。问题在于，当您执行此操作时，您不再拥有默认的ActionBar，并且必须在布局中定义一个。这是我的布局：

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout         xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:local="http://schemas.android.com/apk/res-auto"
    android:id="@+id/main_content"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
    <LinearLayout
        android:orientation="vertical"
        android:layout_width="match_parent"
        android:layout_height="match_parent">
        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            android:background="?attr/colorPrimary"
            local:popupTheme="@style/ThemeOverlay.AppCompat.Light"
            local:layout_scrollFlags="scroll|enterAlways" />
        <android.support.design.widget.TabLayout
            android:id="@+id/tabs"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:paddingLeft="16dp"
            local:tabGravity="center"
            local:tabMode="scrollable" />
        <android.support.v4.view.ViewPager
            android:id="@+id/viewpager"
            android:layout_width="match_parent"
            android:layout_height="fill_parent"
            local:layout_behavior="@string/appbar_scrolling_view_behavior" />
    </LinearLayout>
</android.support.design.widget.CoordinatorLayout>

这是我的活动：

[Activity(Label = "PayItemView", Theme = "@style/MPSTheme")]

public class PayItemView : MvxFragmentActivity
{
    PayItemViewModel vm;
    protected override void OnCreate(Bundle bundle)
    {
        base.OnCreate(bundle);
        Android.Support.V7.Widget.Toolbar myToolbar = (Android.Support.V7.Widget.Toolbar)FindViewById(Resource.Id.toolbar);
        myToolbar.Title = "Current Pay Summary - " + Common.Settings.DriverName;

    }

    protected override void OnViewModelSet()
    {
        base.OnViewModelSet();

        SetContentView(Resource.Layout.PayItemView);

        vm = (this.DataContext as PayItemViewModel) ?? null;

        var viewPager = FindViewById<ViewPager>(Resource.Id.viewpager);
        if (viewPager != null)
        {
            var fragments = new List<MvxCachingFragmentStatePagerAdapter.FragmentInfo>
            {
                new MvxCachingFragmentStatePagerAdapter.FragmentInfo("OTR", typeof (OTRTabView),
                    typeof (OTRTabViewModel)),
                new MvxCachingFragmentStatePagerAdapter.FragmentInfo("LPP", typeof (LPPTabView),
                    typeof (LPPTabViewModel)),
                new MvxCachingFragmentStatePagerAdapter.FragmentInfo("Hours", typeof (HourTabView),
                    typeof (HourTabViewModel)),
            };
            viewPager.Adapter = new MvxCachingFragmentStatePagerAdapter(this, SupportFragmentManager, fragments);
        }

        var tabLayout = FindViewById<TabLayout>(Resource.Id.tabs);
        tabLayout.SetupWithViewPager(viewPager);

    }
}

我创建了我的风格如下：

<style name="MPSTheme" parent="Theme.AppCompat">
    <item name="colorPrimary">#3f51b5</item>
</style>

我在Style的colorPrimary属性中添加了一个随机颜色，它可以正常工作。问题是我的应用程序的其余部分使用ActionBar的设备默认颜色。如果您不使用基于Theme.AppCompat的主题，则不会使您的视图膨胀。有没有办法让我的主题基于Theme.AppCompat并使用设备默认主题中的colorPrimary？

Answer 1

尝试将其包装在android.support.design.widget.AppBarLayout

中

<?xml version="1.0" encoding="utf-8"?> <android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:local="http://schemas.android.com/apk/res-auto" android:id="@+id/main_content" android:layout_width="match_parent" android:layout_height="match_parent"> <android.support.design.widget.AppBarLayout android:id="@+id/appbar" android:layout_width="match_parent" android:layout_height="wrap_content" android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"> <android.support.v7.widget.Toolbar android:id="@+id/toolbar" android:layout_width="match_parent" android:layout_height="wrap_content" android:background="?attr/colorPrimary" local:popupTheme="@style/ThemeOverlay.AppCompat.Light" /> <android.support.design.widget.TabLayout android:id="@+id/tabs" local:tabIndicatorColor="@color/white" android:layout_width="match_parent" android:layout_height="wrap_content" /> </android.support.design.widget.AppBarLayout> <android.support.v4.view.ViewPager android:id="@+id/viewpager" local:layout_behavior="@string/appbar_scrolling_view_behavior" android:layout_width="match_parent" android:layout_height="match_parent" /> </android.support.design.widget.CoordinatorLayout>

MvxFragmentActivity上的MvvmCross设备默认ActionBar颜色

1 个答案: