Java 如何在android线性布局中对齐父底部？
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how to align parent bottom in android linear layout?
提问by Elad Benda
I have a linearlayout
我有一个线性布局
and I want to create at the bottom of it a slice.
我想在它的底部创建一个切片。
I know there are some options, but I'm a bit confused
我知道有一些选择，但我有点困惑
1) android:layout_gravity:"bottom"--> this doesn't work for me for some reason.
1) android:layout_gravity:"bottom"--> 出于某种原因，这对我不起作用。
2) android:gravity_weight="0"and give the sibling before it android:gravity_weight:"1"
2）android:gravity_weight="0"并在它之前给兄弟姐妹android:gravity_weight:"1"
3) android:height="wrap_content"and give the sibling before it android:height:"match_parent"
3）android:height="wrap_content"并在它之前给兄弟姐妹android:height:"match_parent"
I know how to do this using relativeLayout, but I want to practice linearLayout
我知道如何使用相对布局来做到这一点，但我想练习线性布局
what would you suggest?
你有什么建议？
<?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:background="@color/blue_bg"
android:orientation="vertical" >
<ImageView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="10dp"
android:layout_marginTop="5dp"
android:src="@drawable/signup_illu_why" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight=""
android:orientation="horizontal" />
<ImageView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:src="@drawable/signup_skip_icon" />
</LinearLayout>
回答by Vaibhav Agarwal
<?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:background="@android:color/black"
android:orientation="vertical"
android:weightSum="1">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:layout_weight="0.8" >
<ImageView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:src="@drawable/ic_launcher" />
<ImageView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:src="@drawable/ic_launcher" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_weight="0.2" />
</LinearLayout>
回答by The Ray of Hope
try this
尝试这个
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="match_parent"
android:background="#ffffff"
android:orientation="vertical" >
<ImageView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:src="@drawable/ic_launcher" />
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:orientation="vertical" >
<ImageView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:src="@drawable/ic_launcher" />
</LinearLayout>
</RelativeLayout>
回答by Rick Royd Aban
Actually, you can set the parent element's gravity to bottom
实际上，您可以将父元素的重力设置为底部
<?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:background="@color/blue_bg"
android:orientation="vertical"
android:gravity="bottom" >
<ImageView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="10dp"
android:layout_marginTop="5dp"
android:src="@drawable/signup_illu_why" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight=""
android:orientation="horizontal" />
<ImageView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:src="@drawable/signup_skip_icon" />
</LinearLayout>
回答by A_rmas
surround your linear layout with framelayout and give gravity as bottom.. its simple than you think... many layouts are used just for easier move towards design
用 framelayout 包围你的线性布局并将重力作为底部......它比你想象的要简单......使用许多布局只是为了更容易地转向设计
<FrameLayout
android:layout_height="fill_parent"
android:layout_width = "fill_parent">
<LinearLayout`
android:layout_height="wrap_content"
android:layout_width = "wrap_content"
android:layout_gravity = "bottom"
android:orientation = "vertical">
<Button
android:layout_height="wrap_content"
android:layout_width = "wrap_content"
android:text = "btn"/>
</LinearLayout>
</FrameLayout>
`
`
回答by Andrey
<LinearLayout
android:orientation="vertical"
... >
<Space
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1" />
<SomeViewThatNeedsGoBottom
... />
</LinearLayout>
回答by sanjeeb
Use:
用：
android:gravity="bottom"
example:
例子：
<LinearLayout
android:layout_weight="7"
android:layout_width="0dp"
android:layout_height="match_parent"
android:orientation="vertical"
android:weightSum="5">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="some text"
android:layout_weight="2"
android:gravity="bottom" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="some text"
android:layout_weight="1" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="some text"android:gravity="center"
android:layout_weight="2" />
</LinearLayout>
回答by gdrive my
Put Relative in LinearLayout and set Relative to matchparent, so you can use the layoutalignparentbottom
将Relative放在LinearLayout中并设置Relative为matchparent，这样就可以使用layoutalignparentbottom
<?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:background="@color/blue_bg"
android:orientation="vertical" >
<ImageView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="10dp"
android:layout_marginTop="5dp"
android:src="@drawable/signup_illu_why" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight=""
android:orientation="horizontal" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:src="@drawable/signup_skip_icon"
android:layout_alignParentBottom="true" />
</RelativeLayout>
</LinearLayout>
