在我的Fragment中我有一个ConstraintLayout,layout_height="wrap_content"我希望在视图底部的两个底部之间有一个边距.
当我将这个边距添加layout_marginBottom到上方按钮(button_welcome_signup)时,似乎工作正常.但是,如果我尝试将其添加到底部按钮(button_welcome_signin),因为layout_marginTop它不起作用.
有谁知道这里的问题/如果我做错了什么?
(请注意,我使用wrap_content是有原因的,而且我非常想在底部按钮上使用边距,因此我可以将其添加到其样式中,以便在我的项目中实现更好的UI一致性).
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:MyAppApp="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:background="@color/white"
android:minHeight="@dimen/min_height_welcome_frame"
android:padding="@dimen/margin_all_frame_inner">
<ImageView
android:id="@+id/imageview_welcome_logo"
android:layout_width="wrap_content"
android:layout_height="50dp"
android:adjustViewBounds="true"
android:scaleType="fitCenter"
android:src="@drawable/logo_header"
MyAppApp:layout_constraintTop_toTopOf="parent"
MyAppApp:layout_constraintLeft_toLeftOf="parent"
MyAppApp:layout_constraintRight_toRightOf="parent" />
<TextView
android:id="@+id/textiew_welcome_title"
style="@style/MyAppTextViewTitle"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="@dimen/margin_all_component_l"
android:text="@string/welcome_title"
MyAppApp:layout_constraintTop_toBottomOf="@id/imageview_welcome_logo" />
<TextView
android:id="@+id/textview_welcome_text"
style="@style/MyAppTextViewText"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/welcome_message"
MyAppApp:layout_constraintTop_toBottomOf="@id/textiew_welcome_title" />
<Button
android:id="@+id/button_welcome_signin"
style="@style/MyAppSubButton"
android:layout_width="match_parent"
android:layout_height="46dp"
android:layout_marginTop="@dimen/margin_all_component_s"
android:text="@string/welcome_sign_in"
MyAppApp:layout_constraintBottom_toBottomOf="parent" />
<Button
android:id="@+id/button_welcome_signup"
style="@style/MyAppButton"
android:layout_width="match_parent"
android:layout_height="46dp"
android:layout_marginTop="@dimen/margin_all_component_l"
android:text="@string/welcome_sign_up"
MyAppApp:layout_constraintBottom_toTopOf="@id/button_welcome_signin"
MyAppApp:layout_constraintTop_toBottomOf="@id/textview_welcome_text"
MyAppApp:layout_constraintVertical_bias="1" />
</android.support.constraint.ConstraintLayout>
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styles.xml:
<style name="MyAppButton" parent="Widget.AppCompat.Button">
<item …Run Code Online (Sandbox Code Playgroud) android android-layout android-xml android-constraintlayout android-wrap-content