目前我正在学习ConstraintLayout
下面是到目前为止我尝试过的代码
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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:background="#000000"
android:fitsSystemWindows="true"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
tools:context=".activity.PhaseListActivity">
<androidx.core.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:weightSum="1">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="0.8"
android:background="@color/colorAccent">
<VideoView
android:id="@+id/myVideoView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:visibility="visible" />
<TextSwitcher
android:id="@+id/tvAnimText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:layout_gravity="center"
android:fontFamily="@font/knowledge_bold"
android:textColor="@color/greenColor"
android:textSize="@dimen/_100ssp"
android:textStyle="bold"
tools:text="1" />
</FrameLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="0.2"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:padding="10dp"
android:text="Scrollbale view below my videoView"
android:textColor="#ff00"
android:textStyle="bold" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:padding="10dp"
android:text="Scrollbale view below my videoView"
android:textColor="#ff00"
android:textStyle="bold" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:padding="10dp"
android:text="Scrollbale view below my videoView"
android:textColor="#ff00"
android:textStyle="bold" />
</LinearLayout>
</LinearLayout>
</androidx.core.widget.NestedScrollView>
<LinearLayout
android:id="@+id/bottomView"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_gravity="bottom"
android:background="@color/greenColor"
android:orientation="vertical"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent">
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:text="Fixed Bottombar"
android:textColor="#ff00"
android:textStyle="bold" />
</LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
我不想在LinearLayout
内使用嵌套的ConstraintLayout
在以上布局中,我的NestedScrollView
也没有滚动
我想使用ConstraintLayout
我的预期输出
我尝试设置Guideline
,但对我来说无效,因为我不知道如何在上述布局中使用Guideline
有人可以只使用ConstraintLayout
来帮助我创建此屏幕吗
如果需要更多信息,请告诉我。提前致谢。您的努力将不胜感激。
答案 0 :(得分:1)
因此,在查看了您的xml文件之后,我想出了以下解决方案来摆脱嵌套的LinearLayout
层次结构:
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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:background="#000000"
android:fitsSystemWindows="true"
app:layout_behavior="@string/appbar_scrolling_view_behavior">
<androidx.core.widget.NestedScrollView
android:layout_width="0dp"
android:layout_height="0dp"
android:fillViewport="true"
app:layout_constraintBottom_toTopOf="@id/tv_bottom_view"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<VideoView
android:id="@+id/myVideoView"
android:layout_width="0dp"
android:layout_height="0dp"
android:visibility="visible"
app:layout_constrainedHeight="true"
app:layout_constraintBottom_toTopOf="@id/tv1"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHeight_default="percent"
app:layout_constraintHeight_percent="0.85"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_chainStyle="packed" />
<TextSwitcher
android:id="@+id/tvAnimText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:layout_gravity="center"
android:fontFamily="@font/knowledge_bold"
android:textColor="@color/greenColor"
android:textSize="@dimen/_100ssp"
android:textStyle="bold"
app:layout_constraintBottom_toBottomOf="@id/myVideoView"
app:layout_constraintEnd_toEndOf="@id/myVideoView"
app:layout_constraintStart_toStartOf="@id/myVideoView"
app:layout_constraintTop_toTopOf="@id/myVideoView"
tools:text="1" />
<TextView
android:id="@+id/tv1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:padding="10dp"
android:text="Scrollbale view below my videoView"
android:textColor="#ff00"
android:textStyle="bold"
app:layout_constraintBottom_toTopOf="@id/tv2"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@id/myVideoView" />
<TextView
android:id="@+id/tv2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:padding="10dp"
android:text="Scrollbale view below my videoView"
android:textColor="#ff00"
android:textStyle="bold"
app:layout_constraintBottom_toTopOf="@id/tv3"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@id/tv1" />
<TextView
android:id="@+id/tv3"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:padding="10dp"
android:text="Scrollbale view below my videoView"
android:textColor="#ff00"
android:textStyle="bold"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@id/tv2" />
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.core.widget.NestedScrollView>
<TextView
android:id="@+id/tv_bottom_view"
android:layout_width="0dp"
android:layout_height="0dp"
android:gravity="center"
android:text="Fixed Bottombar"
android:textColor="#ff00"
android:textStyle="bold"
app:layout_constrainedHeight="true"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHeight_default="percent"
app:layout_constraintHeight_percent="0.08"
app:layout_constraintStart_toStartOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
让我知道评论中是否有任何查询。对于固定的底部栏TextView
,现在您可以将高度百分比更改为要动态更改其高度的任何值。
答案 1 :(得分:0)
您可以对底部视图使用以下代码,以删除嵌套的LinearLayout:
<TextView
android:id="@+id/bottomView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:text="Fixed Bottombar"
android:textColor="#ff00"
android:background="#00ff00"
android:padding="15dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
android:textStyle="bold" />