Android 8.0 Oreo crash on focusing TextInputEditTe

问题:

After updating some of our devices to android 8.0 , upon focusing on a TextInputEditText field inside of a TextInputLayout, the app crashes with this Exception:

Fatal Exception: java.lang.NullPointerException: Attempt to invoke virtual method 'void
android.view.View.getBoundsOnScreen(android.graphics.Rect)' on a null object reference
at android.app.assist.AssistStructure$WindowNode.(AssistStructure.java)
at android.app.assist.AssistStructure.(AssistStructure.java)
at android.app.ActivityThread.handleRequestAssistContextExtras(ActivityThread.java:3035)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1807)
at android.os.Handler.dispatchMessage(Handler.java:105)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6541)
at java.lang.reflect.Method.invoke(Method.java)
at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)

When we go to android Settings -> System -> Languages & input -> Advanced -> Auto-fill service -> None , then focusing on the TextInputEditText / TextInputLayout no longer crashes.

How can we prevent the crash from happening without having to disable the new 8.0 Auto-fill service on the devices?

回答1:

I ran into this too. It turns out the issue was caused by setting the hint text on the EditText nested inside the TextInputLayout.

I did some digging and found this nugget in the 26.0.0 Beta 2 release notes. Android Support Release Notes June 2017

TextInputLayout must set hints on onProvideAutofillStructure()

That led me to try setting the hint on the TextInputLayout instead of the nested EditText.

This resolved the crashing issue for me. Example:

<android.support.design.widget.TextInputLayout
    android:id="@+id/textInputLayout"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:hint="Some Hint Text"
    android.support.design:hintAnimationEnabled="true"
    android.support.design:hintEnabled="true"
    android.support.design:layout_marginTop="16dp">

    <android.support.design.widget.TextInputEditText
        android:id="@+id/editText"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"/>

</android.support.design.widget.TextInputLayout>

I posted this as an answer here as I mixed up bookmarks. Sorry for posting the same answer twice.

回答2:

Add below mentioned attribute in your EditText:

android:importantForAutofill="noExcludeDescendants"

回答3:

Luke Simpson almost make it right, just should use "styles.xml" instead of "themes.xml".

I created a new style file with version qualifier, aiming to v26, to make it clearer.
Just copy and paste your AppTheme for the v26/styles.xml and add editTextStyle items the EditTextStyle style.

<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
    ...
    <item name="android:editTextStyle">@style/App_EditTextStyle</item>
    <item name="editTextStyle">@style/App_EditTextStyle</item>
</style>

<style name="App_EditTextStyle" parent="@android:style/Widget.EditText">
    <item name="android:importantForAutofill">noExcludeDescendants</item>
</style>

In this way you make this changes for all your EditTexts without needing to change your layout files.

回答4:

You can set any value for importantForAutofill with a style or in the XML it's fix for NPE when you focus the EditText but it's not fix if your long press the EditText and you click on AutoFill. I found a Bug Report about this bug here, please add a star and share your observations in the bug report also.

Thx.

回答5:

I used the v26/themes.xml to override the EditText style autofill only for Oreo 8.0.0:

<style name="EditTextStyle" parent="Widget.AppCompat.EditText">
    <item name="android:importantForAutofill">noExcludeDescendants</item>
</style>

Note that I had to apply the style inline for each EditText in my layout xml for it to take effect. I tried to apply this change globally in my app theme but it didn't work for some reason.

// HAD TO DO THIS IN LAYOUT XML FOR EACH EDIT TEXT
<EditText
    style="@style/EditTextStyle"
    ... />


// THIS DIDN'T TAKE EFFECT IN THEMES XML (HAS BEEN ADDED TO MANIFEST)
<style name="APP_THEME" parent="@style/Theme.AppCompat.Light">
    <item name="android:editTextStyle">@style/EditTextStyle</item>
    <item name="editTextStyle">@style/EditTextStyle</item>
</style>

回答6:

@Luke Simpson is right. You can use it in themes.XML like:-

<item name="editTextStyle">@style/AppEditTextStyle</item>

and then put
<style name="AppEditTextStyle" parent="Widget.AppCompat.EditText">
        <item name="android:importantForAutofill">auto</item>
 </style>

in V26/app_styles.xml

But, I had to put empty tag also in app_styles.xml in the default folder. Otherwise, all the properties of Edit text were getting overriding by this and my edit text was not working properly. And when you put importantForAutoFill property for v26 and you want autofill to work in 8.1, you can simply put

<style name="AppEditTextStyle" parent="Widget.AppCompat.EditText">
        <item name="android:importantForAutofill">auto</item>
    </style>

So, autofill property works in 8.1. It will be disabled just for 8.0 as the crash is hapenning in 8.0 and it has already been fixed in 8.1.