如何使用视图分页器将底视图添加到协调员布局？

gstyhher 于 2022-10-09 发布在 Android

关注(0)|答案(3)|浏览(138)

我想在Coordinator布局中添加一个底视图，底视图将位于fragment之上，由view pager加载，独立于fragment。

我添加了一个linear layout

layout_gravity = "bottom"

但是底视图linear layout根本没有显示

以下是我的activity布局。

<android.support.design.widget.CoordinatorLayout

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.support.design.widget.AppBarLayout
    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/maintoolbar"
        android:layout_width="match_parent"
        android:layout_height="?attr/actionBarSize"
        android:background="?attr/colorPrimary"
        app:layout_scrollFlags="scroll|enterAlways"
        app:popupTheme="@style/ThemeOverlay.AppCompat.Light" />
    <android.support.design.widget.TabLayout
        android:id="@+id/maintabs"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:tabMode="fixed"
        app:tabGravity="fill" />
</android.support.design.widget.AppBarLayout>

<android.support.v4.view.ViewPager
    android:id="@+id/mainviewpager"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"  />

<LinearLayout
    android:id="@+id/completeBottomView"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical">

    <ProgressBar
        android:id="@+id/progressBarBottomView"
        style="?android:attr/progressBarStyleHorizontal"
        android:layout_width="match_parent"
        android:layout_height="5dp"
        android:indeterminate="false"
        android:visibility="gone"
        android:max="100"
        android:progress="1"/>

    <HorizontalScrollView
        android:id="@+id/limiter_scroller"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="bottom|start"
        android:background="#FF3399"
        >
        <LinearLayout
            android:id="@+id/limiter_layout"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal"
            android:onClick="clickFromBottomView"/>
    </HorizontalScrollView>

</LinearLayout>

</android.support.design.widget.CoordinatorLayout>

android

来源：https://stackoverflow.com/questions/36047028/how-to-add-bottom-view-to-a-coordinator-layout-with-view-pager

3条答案

按热度按时间

soat7uwm1#

正如@Dhawal在评论中指出的那样……解决方案是将LinearLayout CompleteBottomView Package 在包含android:layout_gravity="bottom"的FrameLayout中

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9rygscc12#

Android协调员Layout底层布局行为。

Activity_bottom.xml*

<android.support.design.widget.CoordinatorLayout 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.support.design.widget.AppBarLayout
        android:id="@+id/app_bar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            android:background="?attr/colorPrimaryDark"
            app:layout_scrollFlags="scroll|enterAlways"
            app:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar" />
    </android.support.design.widget.AppBarLayout>

    <android.support.v7.widget.RecyclerView
        android:id="@+id/list"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="#C0C0C0"
        app:layout_behavior="@string/appbar_scrolling_view_behavior" />

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="200dp"
        android:layout_gravity="bottom"            
        app:layout_behavior="com.utils.behaviour.BottomLayoutBehavior">

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="#007432"
            android:gravity="center"
            android:text="Footer View"
            android:textColor="@android:color/white"
            android:textSize="25sp" />
    </LinearLayout>

</android.support.design.widget.CoordinatorLayout>

BottomLayoutBehavior.kt*

package com.utils.behaviour

import android.content.Context
import android.util.AttributeSet
import android.view.View
import androidx.coordinatorlayout.widget.CoordinatorLayout
import androidx.core.view.ViewCompat
import kotlin.math.max
import kotlin.math.min

class BottomLayoutBehavior<V : View>(context: Context?, attrs: AttributeSet?) :
    CoordinatorLayout.Behavior<V>(context, attrs) {

    override fun onStartNestedScroll(
        coordinatorLayout: CoordinatorLayout, child: V,
        directTargetChild: View, target: View, axes: Int, type: Int
    ): Boolean {
        return axes == ViewCompat.SCROLL_AXIS_VERTICAL
    }

    override fun onNestedPreScroll(
        coordinatorLayout: CoordinatorLayout, child: V,
        target: View, dx: Int, dy: Int, consumed: IntArray, type: Int
    ) {
        child.translationY = max(
            0f,
            min(child.height.toFloat(), child.translationY + dy)
        )
        super.onNestedPreScroll(coordinatorLayout, child, target, dx, dy, consumed, type)
    }
}

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qybjjes13#

这个代码在我身上起作用了。将android.support.v7.widget.Toolbar的app:layout_scrollFlags="scroll|enterAlways"属性更改为app:layout_scrollFlags="scroll"。更多详细信息here

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