英文:
Design Page Disappeared in Android Studio when Using Tab Layout
问题
我尝试在我的项目中使用Tab Layout。每当我将TabLayout添加到线性布局中时,设计页面就会消失。刷新无效。甚至在组件树中也看不到选项卡项目。但当我在手机上运行此活动时,它看起来正好应该如何。但无法看到设计面板。看一下-
以下是XML代码,以防存在问题,尽管我非常怀疑-
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#E9EDBD"
android:orientation="vertical"
tools:context=".ChattyActivity">
<com.google.android.material.tabs.TabLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<com.google.android.material.tabs.TabItem
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="星期一" />
<com.google.android.material.tabs.TabItem
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="星期二" />
<com.google.android.material.tabs.TabItem
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="星期三" />
</com.google.android.material.tabs.TabLayout>
</LinearLayout>
有三个渲染错误,分别是-
第一个错误
Style ResourceReference{namespace=apk/res-auto, type=attr, name=textAppearanceButton}不是样式类型(而是属性)
第二个错误
未找到样式,ID为2131033000
第三个错误
java.lang.NullPointerException
at android.content.res.Resources_Theme_Delegate.obtainStyledAttributes(Resources_Theme_Delegate.java:74)
at android.content.res.Resources$Theme.obtainStyledAttributes(Resources.java:1631)
at android.content.Context.obtainStyledAttributes(Context.java:874)
at android.widget.TextView.setTextAppearance(TextView.java:3965)
at androidx.appcompat.widget.AppCompatTextView.setTextAppearance(AppCompatTextView.java:216)
at com.google.android.material.textview.MaterialTextView.setTextAppearance(MaterialTextView.java:106)
at android.widget.TextView.setTextAppearance(TextView.java:3954)
at androidx.core.widget.TextViewCompat.setTextAppearance(TextViewCompat.java:289)
at com.google.android.material.tabs.TabLayout$TabView.updateTab(TabLayout.java:2824)
at com.google.android.material.tabs.TabLayout$TabView.update(TabLayout.java:2853)
at com.google.android.material.tabs.TabLayout$TabView.setTab(TabLayout.java:2765)
at com.google.android.material.tabs.TabLayout.createTabView(TabLayout.java:1725)
at com.google.android.material.tabs.TabLayout.newTab(TabLayout.java:1008)
at com.google.android.material.tabs.TabLayout.addTabFromItemView(TabLayout.java:876)
at com.google.android.material.tabs.TabLayout.addViewInternal(TabLayout.java:1782)
at com.google.android.material.tabs.TabLayout.addView(TabLayout.java:1772)
at android.view.LayoutInflater.rInflate_Original(LayoutInflater.java:1131)
at android.view.LayoutInflater_Delegate.rInflate(LayoutInflater_Delegate.java:72)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:1101)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:1088)
at android.view.LayoutInflater.rInflate_Original(LayoutInflater.java:1130)
at android.view.LayoutInflater_Delegate.rInflate(LayoutInflater_Delegate.java:72)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:1101)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:1088)
at android.view.LayoutInflater.inflate(LayoutInflater.java:686)
at android.view.LayoutInflater.inflate(LayoutInflater.java:505)
at com.android.layoutlib.bridge.impl.RenderSessionImpl.inflate(RenderSessionImpl.java:360)
at com.android.layoutlib.bridge.Bridge.createSession(Bridge.java:443)
at com.android.tools.idea.layoutlib.LayoutLibrary.createSession(LayoutLibrary.java:121)
at com.android.tools.idea.rendering.RenderTask.createRenderSession(RenderTask.java:722)
at com.android.tools.idea.rendering.RenderTask.lambda$inflate$9(RenderTask.java:879)
at com.android.tools.idea.rendering.RenderExecutor$runAsyncActionWithTimeout$3.run(RenderExecutor.kt:194)
at com.android.tools.idea.rendering.RenderExecutor$PriorityRunnable.run(RenderExecutor.kt:292)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at java.base/java.lang.Thread.run(Thread.java:829)
我尝试在谷歌上搜索这个问题,但我找不到任何有用的信息。我找到的解决方案与这个问题不太相关,即使是,我也无法理解。我尝试重新打开Android Studio,重新打开项目,删除XML文件并创建一个具有完全相同代码的新文件。一遍又一遍地刷新活动。
英文:
I was trying to use Tab Layout in my project. Whenever I add a TabLayout to the linear layout the design page disappears. Refreshing doesn't work. I can't even see the tab items in the component tree. But when I run this activity in a phone, it looks exactly how it should. But can't see the design panel. Have a look-
The XML code below in case there is a problem there, though I highly doubt it-
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#E9EDBD"
android:orientation="vertical"
tools:context=".ChattyActivity">
<com.google.android.material.tabs.TabLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<com.google.android.material.tabs.TabItem
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Monday" />
<com.google.android.material.tabs.TabItem
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Tuesday" />
<com.google.android.material.tabs.TabItem
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Wednesday" />
</com.google.android.material.tabs.TabLayout>
</LinearLayout>
There are three Render Errors which are-
First Error
Style ResourceReference{namespace=apk/res-auto, type=attr, name=textAppearanceButton} is not of type STYLE (instead attr)
Second Error
Failed to find style with 2131033000
Third Error
java.lang.NullPointerException
at android.content.res.Resources_Theme_Delegate.obtainStyledAttributes(Resources_Theme_Delegate.java:74)
at android.content.res.Resources$Theme.obtainStyledAttributes(Resources.java:1631)
at android.content.Context.obtainStyledAttributes(Context.java:874)
at android.widget.TextView.setTextAppearance(TextView.java:3965)
at androidx.appcompat.widget.AppCompatTextView.setTextAppearance(AppCompatTextView.java:216)
at com.google.android.material.textview.MaterialTextView.setTextAppearance(MaterialTextView.java:106)
at android.widget.TextView.setTextAppearance(TextView.java:3954)
at androidx.core.widget.TextViewCompat.setTextAppearance(TextViewCompat.java:289)
at com.google.android.material.tabs.TabLayout$TabView.updateTab(TabLayout.java:2824)
at com.google.android.material.tabs.TabLayout$TabView.update(TabLayout.java:2853)
at com.google.android.material.tabs.TabLayout$TabView.setTab(TabLayout.java:2765)
at com.google.android.material.tabs.TabLayout.createTabView(TabLayout.java:1725)
at com.google.android.material.tabs.TabLayout.newTab(TabLayout.java:1008)
at com.google.android.material.tabs.TabLayout.addTabFromItemView(TabLayout.java:876)
at com.google.android.material.tabs.TabLayout.addViewInternal(TabLayout.java:1782)
at com.google.android.material.tabs.TabLayout.addView(TabLayout.java:1772)
at android.view.LayoutInflater.rInflate_Original(LayoutInflater.java:1131)
at android.view.LayoutInflater_Delegate.rInflate(LayoutInflater_Delegate.java:72)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:1101)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:1088)
at android.view.LayoutInflater.rInflate_Original(LayoutInflater.java:1130)
at android.view.LayoutInflater_Delegate.rInflate(LayoutInflater_Delegate.java:72)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:1101)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:1088)
at android.view.LayoutInflater.inflate(LayoutInflater.java:686)
at android.view.LayoutInflater.inflate(LayoutInflater.java:505)
at com.android.layoutlib.bridge.impl.RenderSessionImpl.inflate(RenderSessionImpl.java:360)
at com.android.layoutlib.bridge.Bridge.createSession(Bridge.java:443)
at com.android.tools.idea.layoutlib.LayoutLibrary.createSession(LayoutLibrary.java:121)
at com.android.tools.idea.rendering.RenderTask.createRenderSession(RenderTask.java:722)
at com.android.tools.idea.rendering.RenderTask.lambda$inflate$9(RenderTask.java:879)
at com.android.tools.idea.rendering.RenderExecutor$runAsyncActionWithTimeout$3.run(RenderExecutor.kt:194)
at com.android.tools.idea.rendering.RenderExecutor$PriorityRunnable.run(RenderExecutor.kt:292)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at java.base/java.lang.Thread.run(Thread.java:829)
I tried to google this problem but I couldn't find anything helpful. The solutions I found are not really relatable with this problem, even if it is I couldn't understand. I tried reopening android studio, reopening project, deleting the XML file and creating a new one with exact same code in it. refreshing activity over and over.
答案1
得分: 1
后来我找到了解决方案。所以我会把答案留在这里,以防有人需要。
解决方案实际上非常简单。你只需要使用较低版本的Android Material以避免渲染问题。
- 首先进入build.gradle(Module:app)。
- 找到依赖项并定位implementation 'com.google.android.material:material:(你当前使用的版本)'。
- 现在将这行代码覆盖为implementation 'com.google.android.material:material:1.7.0'。
- 点击立即同步。
这应该解决问题,现在你正在使用1.7.0版本。希望对你有帮助。
英文:
Later I found a solution to this problem. So I will leave the answer here in case someone needs it.
The solution is very easy actually. You just need to use a lower version of android material to avoid rendering problem.
- First go to the build:gradle(Module:app)
- Find dependencies and locate implementation 'com.google.android.material:material:(whatever version you have here)
- Now overwrite this line with implementation 'com.google.android.material:material:1.7.0'
- Click sync now.
This should solve the problem, now that you are using 1.7.0 version. Hope it helped you.
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