CoordinatorLayout在“设计"视图中不可见 [英] CoordinatorLayout is not visible in Design view
本文介绍了CoordinatorLayout在“设计"视图中不可见的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
说我有一个片段:
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout 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:fitsSystemWindows="true"
>
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="@style/AppTheme.AppBarOverlay"
>
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:popupTheme="@style/AppTheme.PopupOverlay"
/>
</android.support.design.widget.AppBarLayout>
<android.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center_horizontal"
android:paddingLeft="@dimen/registration_activity_horizontal_margin"
android:paddingRight="@dimen/registration_activity_horizontal_margin"
android:paddingTop="@dimen/registration_activity_vertical_margin"
>
...
</android.support.constraint.ConstraintLayout>
</android.support.design.widget.CoordinatorLayout>
在设计"视图中,我得到了这张图片.
In Design view I get this picture.
如何显示正确的布局?
推荐答案
将gradle设置更改为follow->
change gradle setting as follow->
compileSdkVersion 28
targetSdkVersion 28
将依赖项更改为以下->
change dependencies as follow->
implementation 'com.android.support:appcompat-v7:28.0.0-alpha1'
implementation 'com.android.support:support-v4:28.0.0-alpha1'
implementation 'com.android.support:design:28.0.0-alpha1'
implementation 'com.android.support:recyclerview-v7:28.0.0-alpha1'
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