Android OSS license plugin crash on tapping menu items

问题

I've been trying out the Google APIs for Android OSS licenses tool and come across an issue.

The activity is being launched from a library module that contains the preferences aspect to my app. However, the Play Services code is crashing a lot! Has anyone seen this upon tapping the found OSS list items?

java.lang.RuntimeException: Unable to start activity ComponentInfo{com.oceanlife/com.google.android.gms.oss.licenses.OssLicensesActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.support.v7.app.ActionBar.setTitle(java.lang.CharSequence)' on a null object reference
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2665)
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2726)
    at android.app.ActivityThread.-wrap12(ActivityThread.java)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1477)
    at android.os.Handler.dispatchMessage(Handler.java:102)
    at android.os.Looper.loop(Looper.java:154)
    at android.app.ActivityThread.main(ActivityThread.java:6119)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)
 Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.support.v7.app.ActionBar.setTitle(java.lang.CharSequence)' on a null object reference
    at com.google.android.gms.oss.licenses.OssLicensesActivity.onCreate(Unknown Source)
    at android.app.Activity.performCreate(Activity.java:6679)
    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1118)
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2618)
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2726) 
    at android.app.ActivityThread.-wrap12(ActivityThread.java) 
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1477) 
    at android.os.Handler.dispatchMessage(Handler.java:102) 
    at android.os.Looper.loop(Looper.java:154) 
    at android.app.ActivityThread.main(ActivityThread.java:6119) 
    at java.lang.reflect.Method.invoke(Native Method) 
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886) 
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)

Here are the actions leading to that action;

回答1:

Just specify appropriate theme in the AndroidManifest.xml file for 2 activities OssLicensesMenuActivity and OssLicensesActivity. For example:

<activity android:name="com.google.android.gms.oss.licenses.OssLicensesMenuActivity"
    android:theme="@style/Theme.AppCompat.DayNight.DarkActionBar"/>

<activity android:name="com.google.android.gms.oss.licenses.OssLicensesActivity"
    android:theme="@style/Theme.AppCompat.DayNight.DarkActionBar"/>

回答2:

Application tag

<application
        android:theme="@style/AppTheme">

application/>

and styles.xml

 <!-- Base application theme. -->
    <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
        <!-- Customize your theme here. -->
        <item name="colorPrimary">@color/colorPrimary</item>
    </style>

I hope ActionBar required to set Title of activity

来源：https://stackoverflow.com/questions/46124863/android-oss-license-plugin-crash-on-tapping-menu-items

标签

android

google-play-services

gms-licenses-plugin