片段应用程序，如何添加页脚? [英] Fragment application, how to add a footer?

问题描述

我正在使用带有4个标签的Android应用程序.

I'm working on an Android application with 4 tabs.

这是我的activity_main.xml

Here is my activity_main.xml

 <android.support.v4.view.ViewPager xmlns:android="http://schemas.android.com/apk/res/android"
     android:id="@+id/pager"
     android:layout_width="match_parent"
     android:layout_height="match_parent">

 </android.support.v4.view.ViewPager>

这是我的标签之一(目前它们都相同)

And here is one of my tab (they are all the same for the moment)

 <?xml version="1.0" encoding="utf-8"?>
 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:orientation="vertical"
     android:background="#ff8400" >

     <TextView android:layout_width="fill_parent"
         android:layout_height="wrap_content"
         android:gravity="center"
         android:text="Top Screen"
         android:textSize="20dp"
         android:layout_centerInParent="true"/>


 </RelativeLayout>

如何添加在每个选项卡上可见的页脚?

How could I add a footer that would be visible on each tab?

要添加一个在滚动标签时仍可见的播放器.

It's to add a player that stays visible while scrolling the tab.

推荐答案

您将需要对您的主要活动布局进行更改.您可以使用LinearLayout或RelativeLayout做到这一点.因为LinearLayout的价格便宜，所以我在这里向您展示.

You're going to need to make a change to your main activity layout. You can do it with a LinearLayout or RelativeLayout. Because a LinearLayout is less expensive I will show you that here.

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <android.support.v4.view.ViewPager
        android:id="@+id/pager"
        android:layout_width="wrap_content"
        android:layout_height="0dp"
        android:layout_weight="1"/>

    <View
        android:id="@+id/music_player"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"/>
</LinearLayout>

该视图可以是任何东西，我建议在那里使用框架布局，如果要像音乐播放器一样复杂，则放入一个片段.这是如何工作的，您可以设置音乐播放器的高度(wrap_content)，然后用layout_height ="0dp"和layout_weight ="1"告诉寻呼机占用其余空间.

The view could been anything, I would recommend using a framelayout there and putting in a fragment if it is going to be as complicated as a music player. How this works is you set the height of the musicplayer (wrap_content) and you tell the pager to take up the rest of the space with layout_height="0dp" and layout_weight="1".

如果您想执行RelativeLayout，则音乐播放器将alignParentBottom ="true"，而传呼机将将layout_above ="@ + id/music_player设置为layout_height =" matchparent或alignParentTop =" true.

If you want to do a RelativeLayout then the musicplayer would alignParentBottom="true" and the pager would have layout_above="@+id/music_player with either layout_height="matchparent" or alignParentTop="true".

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