使用HMS推送定义了EMUI的样式导致TimePicker初始化失败

文章目录

昨天遇到一个很奇葩的问题，使用了华为HMS SDK中的推送功能，然后插件布局文件中的TimePicker初始化时，会报如下错误：

android.view.InflateException: Binary XML file line #47: Error inflating class huawei.android.widget.TimePicker

很奇怪，TimePicker在布局文件中使用<TimePicker/>标签，当布局文件被inflate后，在android.widget.TimePicker前面加了一个huawei.。如果使用<android.widget.TimePicker/>标签，则不会有问题；而其他有地方会出现这个新的错误：

android.view.InflateException: Binary XML file line #20: Error inflating class <unknown>
at android.view.LayoutInflater.createView(LayoutInflater.java:620)
at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:56)
at android.view.LayoutInflater.onCreateView(LayoutInflater.java:669)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:694)
at android.view.LayoutInflater.inflate(LayoutInflater.java:469)
at android.view.LayoutInflater.inflate(LayoutInflater.java:397)
at android.view.LayoutInflater.inflate(LayoutInflater.java:353)
at android.app.TimePickerDialog.<init>(TimePickerDialog.java:103)
at android.app.TimePickerDialog.<init>(TimePickerDialog.java:74)
at android.view.View.performClick(View.java:4447)
at android.view.View$PerformClick.run(View.java:18457)
at android.os.Handler.handleCallback(Handler.java:733)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5119)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:605)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.reflect.InvocationTargetException
at java.lang.reflect.Constructor.constructNative(Native Method)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at android.view.LayoutInflater.createView(LayoutInflater.java:594)
... 20 more
Caused by: java.lang.NullPointerException
at android.view.ViewGroup.addView(ViewGroup.java:3353)
at com.huawei.android.hwcontrol.TimePickerFactory.updateAmPmStart(TimePickerFactory.java:92)
at android.widget.TimePicker.<init>(TimePicker.java:265)
at android.widget.TimePicker.<init>(TimePicker.java:139)
... 23 more
java.lang.reflect.InvocationTargetException
at java.lang.reflect.Constructor.constructNative(Native Method)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at android.view.LayoutInflater.createView(LayoutInflater.java:594)
at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:56)
at android.view.LayoutInflater.onCreateView(LayoutInflater.java:669)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:694)
at android.view.LayoutInflater.inflate(LayoutInflater.java:469)
at android.view.LayoutInflater.inflate(LayoutInflater.java:397)
at android.view.LayoutInflater.inflate(LayoutInflater.java:353)
at android.app.TimePickerDialog.<init>(TimePickerDialog.java:103)
at android.app.TimePickerDialog.<init>(TimePickerDialog.java:74)
at android.view.View.performClick(View.java:4447)
at android.view.View$PerformClick.run(View.java:18457)
at android.os.Handler.handleCallback(Handler.java:733)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5119)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:605)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.NullPointerException
at android.view.ViewGroup.addView(ViewGroup.java:3353)
at com.huawei.android.hwcontrol.TimePickerFactory.updateAmPmStart(TimePickerFactory.java:92)
at android.widget.TimePicker.<init>(TimePicker.java:265)
at android.widget.TimePicker.<init>(TimePicker.java:139)
... 23 more

但如果不使用插件，在主应用中使用TimePicker之类的组件，就一切OK。

好吧，问题很严重，已经定位到是集成了推送的功能之后出现的。但很难定位为什么出现这种问题，注册Token后，跨进程通讯问题？后台推送服务导致的？

看到这个huawei.android.widget.TimePicker在想，华为又调皮了，又改了系统的源码。因为google官方的android系统源中有这样一个逻辑，发现布局文件中的View没有包名，会自动加上android.widget.前缀。

已经在怀疑是在AndroidManifest.xml文件中配置了什么导致了问题，所以一行一行的排查。果然，在去掉下面这行后，就正常了。

<application>

	<meta-data android:name="hwc-theme"
            android:value="androidhwext:style/Theme.Emui.NoActionBar" />

</application>

这个meta-data定义是放在applicaton标签中，所以会针对整个App。把这行干掉之后，问题解决。

这种问题也只能是在这种特定场景中被遇到，一般还真遇不到。三生有幸！