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android - 无法使用服务上下文使用材质组件膨胀布局

问题描述

服务必须膨胀布局以显示为浮动小部件。我可以使用非物质 UI 组件。但是当我使用像按钮这样的材质组件时，应用程序崩溃并出现以下错误。

java.lang.RuntimeException: Unable to create service com.example.WindowService: android.view.InflateException: Binary XML file line #82: Binary XML file line #82: Error inflating class com.google.android.material.button.MaterialButton
    at android.app.ActivityThread.handleCreateService(ActivityThread.java:3740)
    at android.app.ActivityThread.access$1400(ActivityThread.java:235)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1784)
    at android.os.Handler.dispatchMessage(Handler.java:106)
    at android.os.Looper.loop(Looper.java:214)
    at android.app.ActivityThread.main(ActivityThread.java:6981)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1445)
 Caused by: android.view.InflateException: Binary XML file line #82: Binary XML file line #82: Error inflating class com.google.android.material.button.MaterialButton
 Caused by: android.view.InflateException: Binary XML file line #82: Error inflating class com.google.android.material.button.MaterialButton
 Caused by: java.lang.reflect.InvocationTargetException
    at java.lang.reflect.Constructor.newInstance0(Native Method)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:343)
    at android.view.LayoutInflater.createView(LayoutInflater.java:647)
    at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:790)
    at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:730)
    at android.view.LayoutInflater.rInflate(LayoutInflater.java:863)
    at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:824)
    at android.view.LayoutInflater.inflate(LayoutInflater.java:515)
    at android.view.LayoutInflater.inflate(LayoutInflater.java:423)
    at android.view.LayoutInflater.inflate(LayoutInflater.java:374)
    at android.view.View.inflate(View.java:26170)
    at com.example.WindowService.onCreate(WindowService.kt:29)
    at android.app.ActivityThread.handleCreateService(ActivityThread.java:3728)
    at android.app.ActivityThread.access$1400(ActivityThread.java:235)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1784)
    at android.os.Handler.dispatchMessage(Handler.java:106)
    at android.os.Looper.loop(Looper.java:214)
    at android.app.ActivityThread.main(ActivityThread.java:6981)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1445)
 Caused by: java.lang.IllegalArgumentException: The style on this component requires your app theme to be Theme.MaterialComponents (or a descendant).
    at com.google.android.material.internal.ThemeEnforcement.checkTheme(ThemeEnforcement.java:240)
    at com.google.android.material.internal.ThemeEnforcement.checkMaterialTheme(ThemeEnforcement.java:215)
    at com.google.android.material.internal.ThemeEnforcement.checkCompatibleTheme(ThemeEnforcement.java:143)
    at com.google.android.material.internal.ThemeEnforcement.obtainStyledAttributes(ThemeEnforcement.java:78)
    at com.google.android.material.button.MaterialButton.<init>(MaterialButton.java:200)
    at com.google.android.material.button.MaterialButton.<init>(MaterialButton.java:191)
    at java.lang.reflect.Constructor.newInstance0(Native Method) 
    at java.lang.reflect.Constructor.newInstance(Constructor.java:343) 
    at android.view.LayoutInflater.createView(LayoutInflater.java:647) 
    at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:790) 
    at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:730) 
    at android.view.LayoutInflater.rInflate(LayoutInflater.java:863) 
    at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:824) 
    at android.view.LayoutInflater.inflate(LayoutInflater.java:515) 
    at android.view.LayoutInflater.inflate(LayoutInflater.java:423) 
    at android.view.LayoutInflater.inflate(LayoutInflater.java:374) 
    at android.view.View.inflate(View.java:26170) 
    at com.example.WindowService.onCreate(WindowService.kt:29) 
    at android.app.ActivityThread.handleCreateService(ActivityThread.java:3728) 
    at android.app.ActivityThread.access$1400(ActivityThread.java:235) 
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1784) 
    at android.os.Handler.dispatchMessage(Handler.java:106) 
    at android.os.Looper.loop(Looper.java:214) 
    at android.app.ActivityThread.main(ActivityThread.java:6981) 
    at java.lang.reflect.Method.invoke(Native Method) 
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493) 
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1445) 

内部服务 onCreate。该行抛出上述错误。

floatingView = View.inflate(this, R.layout.floating_view, null)

floating_layout 包含带有数据绑定的 ConstraintLayout 和下面的材质小部件。

<com.google.android.material.button.MaterialButton
            android:id="@+id/material_button"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/device_name"/>

我尝试将 AppTheme 更改为几个可用的<application>标签材料主题，但仍然是同样的问题。

标签： androidandroid-layoutmaterial-designandroid-service

解决方案

根据@StanislavBondar的评论，能够使用服务中的材料组件来膨胀布局。

floatingView = View.inflate(new ContextThemeWrapper(this, R.style.AppTheme), R.layout.floating_view)

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