Android Support Library ActionBar NullPointerExcep

2019-07-15 13:40发布

站内文章 / Android
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问题:

I am using the v7 Support Library to show an ActionBar on Android 2.x.

When I deploy the app to the device in my IDE (Intellij IDEA) the app works fine.

When I build and package the app to be deployed to the Play Store using maven, I find that I get the following exception when I install and run the packaged app on my device and the app crashes. (It fails on the v8 simulator too). It works fine in both scenarios on android v4.3.

Any idea why this would be crashing when built with maven?

01-07 15:05:22.671      937-937/? E/AndroidRuntime﹕ FATAL EXCEPTION: main
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.triopsis.as.mobile.android/com.triopsis.as.mobile.android.activity.MainMenuActivity}: android.view.InflateException: Binary XML file line #25: Error inflating class android.support.v7.internal.widget.ActionBarView
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
        at android.app.ActivityThread.access$2300(ActivityThread.java:125)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
        at android.os.Handler.dispatchMessage(Handler.java:99)
        at android.os.Looper.loop(Looper.java:123)
        at android.app.ActivityThread.main(ActivityThread.java:4627)
        at java.lang.reflect.Method.invokeNative(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:521)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
        at dalvik.system.NativeStart.main(Native Method)
 Caused by: android.view.InflateException: Binary XML file line #25: Error inflating class android.support.v7.internal.widget.ActionBarView
        at android.view.LayoutInflater.createView(LayoutInflater.java:513)
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:565)
        at android.view.LayoutInflater.rInflate(LayoutInflater.java:618)
        at android.view.LayoutInflater.rInflate(LayoutInflater.java:621)
        at android.view.LayoutInflater.parseInclude(LayoutInflater.java:677)
        at android.view.LayoutInflater.rInflate(LayoutInflater.java:614)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:407)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:320)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:276)
        at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:198)
        at android.app.Activity.setContentView(Activity.java:1647)
        at android.support.v7.app.ActionBarActivity.superSetContentView(ActionBarActivity.java:216)
        at android.support.v7.app.ActionBarActivityDelegateBase.ensureSubDecor(ActionBarActivityDelegateBase.java:180)
        at android.support.v7.app.ActionBarActivityDelegateBase.setContentView(ActionBarActivityDelegateBase.java:134)
        at android.support.v7.app.ActionBarActivity.setContentView(ActionBarActivity.java:76)
        at com.triopsis.as.mobile.android.activity.MainMenuActivity.onCreate(MainMenuActivity.java:43)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
        at android.app.ActivityThread.access$2300(ActivityThread.java:125)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
        at android.os.Handler.dispatchMessage(Handler.java:99)
        at android.os.Looper.loop(Looper.java:123)
        at android.app.ActivityThread.main(ActivityThread.java:4627)
        at java.lang.reflect.Method.invokeNative(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:521)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
        at dalvik.system.NativeStart.main(Native Method)
 Caused by: java.lang.reflect.InvocationTargetException
        at android.support.v7.internal.widget.ActionBarView.<init>(ActionBarView.java:218)
        at java.lang.reflect.Constructor.constructNative(Native Method)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:446)
        at android.view.LayoutInflater.createView(LayoutInflater.java:500)
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:565)
        at android.view.LayoutInflater.rInflate(LayoutInflater.java:618)
        at android.view.LayoutInflater.rInflate(LayoutInflater.java:621)
        at android.view.LayoutInflater.parseInclude(LayoutInflater.java:677)
        at android.view.LayoutInflater.rInflate(LayoutInflater.java:614)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:407)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:320)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:276)
        at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:198)
        at android.app.Activity.setContentView(Activity.java:1647)
        at android.support.v7.app.ActionBarActivity.superSetContentView(ActionBarActivity.java:216)
        at android.support.v7.app.ActionBarActivityDelegateBase.ensureSubDecor(ActionBarActivityDelegateBase.java:180)
        at android.support.v7.app.ActionBarActivityDelegateBase.setContentView(ActionBarActivityDelegateBase.java:134)
        at android.support.v7.app.ActionBarActivity.setContentView(ActionBarActivity.java:76)
        at com.triopsis.as.mobile.android.activity.MainMenuActivity.onCreate(MainMenuActivity.java:43)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
        at android.app.ActivityThread.access$2300(ActivityThread.java:125)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
        at android.os.Handler.dispatchMessage(Handler.java:99)
        at android.os.Looper.loop(Looper.java:123)
        at android.app.ActivityThread.main(ActivityThread.java:4627)
        at java.lang.reflect.Method.invokeNative(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:521)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
        at dalvik.system.NativeStart.main(Native Method)
 Caused by: java.lang.NullPointerException
        at android.support.v7.internal.widget.ActionBarView$HomeView.onFinishInflate(ActionBarView.java:1301)
        at android.view.LayoutInflater.rInflate(LayoutInflater.java:626)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:407)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:320)
        at android.support.v7.internal.widget.ActionBarView.<init>(ActionBarView.java:218)
        at java.lang.reflect.Constructor.constructNative(Native Method)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:446)
        at android.view.LayoutInflater.createView(LayoutInflater.java:500)
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:565)
        at android.view.LayoutInflater.rInflate(LayoutInflater.java:618)
        at android.view.LayoutInflater.rInflate(LayoutInflater.java:621)
        at android.view.LayoutInflater.parseInclude(LayoutInflater.java:677)
        at android.view.LayoutInflater.rInflate(LayoutInflater.java:614)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:407)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:320)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:276)
        at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:198)
        at android.app.Activity.setContentView(Activity.java:1647)
        at android.support.v7.app.ActionBarActivity.superSetContentView(ActionBarActivity.java:216)
        at android.support.v7.app.ActionBarActivityDelegateBase.ensureSubDecor(ActionBarActivityDelegateBase.java:180)
        at android.support.v7.app.ActionBarActivityDelegateBase.setContentView(ActionBarActivityDelegateBase.java:134)
        at android.support.v7.app.ActionBarActivity.setContentView(ActionBarActivity.java:76)
        at com.triopsis.as.mobile.android.activity.MainMenuActivity.onCreate(MainMenuActivity.java:43)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
        at android.app.ActivityThread.access$2300(ActivityThread.java:125)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
        at android.os.Handler.dispatchMessage(Handler.java:99)
        at android.os.Looper.loop(Looper.java:123)
        at android.app.ActivityThread.main(ActivityThread.java:4627)
        at java.lang.reflect.Method.invokeNative(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:521)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
        at dalvik.system.NativeStart.main(Native Method)

I have the following dependencies in maven:

<dependencies>
    <dependency>
        <groupId>android</groupId>
        <artifactId>android</artifactId>
        <version>4.0_r3</version>
        <scope>provided</scope>
    </dependency>
    <dependency>
        <groupId>android.support</groupId>
        <artifactId>compatibility-v7-appcompat</artifactId>
        <version>19.0.1</version>
        <type>jar</type>
    </dependency>
    <dependency>
        <groupId>android.support</groupId>
        <artifactId>compatibility-v7-appcompat</artifactId>
        <version>19.0.1</version>
        <type>apklib</type>
    </dependency>
    <dependency>
        <groupId>android.support</groupId>
        <artifactId>compatibility-v13</artifactId>
        <version>19.0.1</version>
        <type>jar</type>
    </dependency>
</dependencies>

and the following maven-android-plugin configured:

<build>
    <plugins>
        <plugin>
            <groupId>com.jayway.maven.plugins.android.generation2</groupId>
            <artifactId>android-maven-plugin</artifactId>
            <version>3.8.2</version>
            <configuration>
                <sdk>
                    <platform>14</platform>
                </sdk>
            </configuration>
            <extensions>true</extensions>
        </plugin>
    </plugins>
</build>

UPDATE

It has taken a while, but I have discovered that when I have the res/xml/preferences.xml file with PreferenceScreen settings then it causes this crash. If I remove this file, then it does not crash. Anyone know why that could cause this issue?

回答1:

Do you abslutely need features of android-maven-plugin version 3.8.2? It seems to be bugy.

A similar problem appeared in our project after updating android-maven-plugin from version 3.8.0 to 3.8.2.

Falling back to version 3.8.0 solved the problem.

Symptoms:
Our conclusion is that the problem was in the linking of the apklib, all ressources (layouts, drawables...) referenced seemed to be disaligned. For example a layout or a drawable was displayed instead of another. Application was crashing when accessing to a missing reference/id in a layout (the reference was not present because the wrong layout was loaded).

See issue http://code.google.com/p/maven-android-plugin/issues/detail?id=441



标签： android maven android-support-library android-maven-plugin
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