Question

我在主要活动中创建了一个工具栏，我已经设置了滚动标记，但问题是片段隐藏和显示不起作用，除了一个片段，它在所有其他片段中工作，而且我的工厂也是不可见但工厂在预览中显示我不知道我哪里出错了所以如果有人可以帮助我在这里请

MainActivity.java

toolbar = findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

main activity.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
    android:id="@+id/main_content"
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/colorPrimary">

    <!-- AppBarLayout is a wrapper for a Toolbar in order to apply scrolling effects. -->
    <!-- Note that AppBarLayout expects to be the first child nested within a CoordinatorLayout -->
    <android.support.design.widget.AppBarLayout
        android:id="@+id/appBar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:theme="@style/ThemeOverlay.AppCompat.ActionBar">

        <!-- Toolbar is the actual app bar with text and the action items -->
        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            android:background="?attr/colorPrimary"
            app:titleTextColor="@color/White"
            app:layout_scrollFlags="scroll|enterAlways|snap">
        </android.support.v7.widget.Toolbar>
    </android.support.design.widget.AppBarLayout>
<FrameLayout
    android:id="@+id/frame_container"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_above="@+id/bottom_navigation"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"
    android:animateLayoutChanges="true">

</FrameLayout>

    <com.aurelhubert.ahbottomnavigation.AHBottomNavigation
        android:id="@+id/bottom_navigation"
        android:layout_width="match_parent"
        android:layout_height="56dp"
        android:layout_alignParentBottom="true"
        android:layout_gravity="bottom" />
</android.support.design.widget.CoordinatorLayout>

以及无效的片段

<RelativeLayout android:layout_width="match_parent"
    android:layout_height="match_parent"
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto">
    <android.support.v7.widget.RecyclerView
        android:id="@+id/feed_recycler_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:clipToPadding="false"
        app:layout_behavior="@string/appbar_scrolling_view_behavior" />

   <android.support.design.widget.FloatingActionButton
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
       app:fabSize="normal"
        android:layout_marginBottom="5dp"
       android:layout_alignParentRight="true"
       android:layout_alignParentEnd="true"
       android:layout_alignParentBottom="true"
       android:src="@drawable/ic_search_black_24dp" />
</RelativeLayout>

主要活动的工具栏不在片段中工作

0 个答案: