Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
1.0k views
in Technique[技术] by (71.8m points)

margin - app:layout_marginBottom is not working well with android constraint layout

Is there any reason why the following layout_marginBottom is not working? However, if I use layout_marginTop on the second view it does work well

<android.support.constraint.ConstraintLayout
    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:background="#ade4ad">
    <TextView
        android:id="@+id/first"
        android:layout_width="90dp"
        android:layout_height="40dp"
        app:layout_marginBottom="10dp"
        android:background="#000"/>
    <TextView
        android:id="@+id/second"
        android:layout_width="90dp"
        android:layout_height="40dp"
        android:background="#fff"
        app:layout_constraintTop_toBottomOf="@+id/first"/>
</android.support.constraint.ConstraintLayout>
question from:https://stackoverflow.com/questions/44931337/applayout-marginbottom-is-not-working-well-with-android-constraint-layout

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

In order to

android:layout_marginBottom="20dp" 

work well, you should use

app:layout_constraintBottom_toBottomOf="parent"

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...