[英]how to align parent bottom in android linear layout?
我有一個線性布局
我想在它的底部創建一個切片。
我知道有一些選擇,但我有點困惑
1) android:layout_gravity:"bottom"
--> 由於某種原因,這對我不起作用。
2) android:gravity_weight="0"
並在它之前給兄弟android:gravity_weight:"1"
3) android:height="wrap_content"
並在它之前給兄弟android:height:"match_parent"
我知道如何使用相對布局來做到這一點,但我想練習線性布局
你有什么建議?
<?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>
實際上,您可以將父元素的重力設置為底部
<?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>
<LinearLayout
android:orientation="vertical"
... >
<Space
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1" />
<SomeViewThatNeedsGoBottom
... />
</LinearLayout>
試試這個
<?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>
<?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>
用 framelayout 包圍你的線性布局並將重力作為底部......它比你想象的要簡單......使用許多布局只是為了更容易地轉向設計
<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>
`
采用:
android:gravity="bottom"
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>
將Relative放在LinearLayout中並設置Relative為matchparent,這樣就可以使用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>
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