Question

所以我第一次将我的应用程序上传到Google Play商店（在Alpha中）。

但是当我安装并打开应用程序时，它会崩溃。但是如果我只是通过Android Studio运行它就可以了。

这是Firebase崩溃报告导致崩溃的错误：

Exception java.lang.NullPointerException: Attempt to invoke virtual method 'int java.lang.Integer.intValue()' on a null object reference
android.support.design.widget.CoordinatorLayout.onLayout (CoordinatorLayout.java)
android.view.View.layout (View.java:18793)
android.view.ViewGroup.layout (ViewGroup.java:5952)
android.support.v4.widget.DrawerLayout.onLayout (DrawerLayout.java)
android.view.View.layout (View.java:18793)
android.view.ViewGroup.layout (ViewGroup.java:5952)
android.widget.FrameLayout.layoutChildren (FrameLayout.java:323)
android.widget.FrameLayout.onLayout (FrameLayout.java:261)
android.view.View.layout (View.java:18793)
android.view.ViewGroup.layout (ViewGroup.java:5952)
android.widget.LinearLayout.setChildFrame (LinearLayout.java:1741)
android.widget.LinearLayout.layoutVertical (LinearLayout.java:1585)
android.widget.LinearLayout.onLayout (LinearLayout.java:1494)
android.view.View.layout (View.java:18793)
android.view.ViewGroup.layout (ViewGroup.java:5952)
android.widget.FrameLayout.layoutChildren (FrameLayout.java:323)
android.widget.FrameLayout.onLayout (FrameLayout.java:261)
android.view.View.layout (View.java:18793)
android.view.ViewGroup.layout (ViewGroup.java:5952)
android.widget.LinearLayout.setChildFrame (LinearLayout.java:1741)
android.widget.LinearLayout.layoutVertical (LinearLayout.java:1585)
android.widget.LinearLayout.onLayout (LinearLayout.java:1494)
android.view.View.layout (View.java:18793)
android.view.ViewGroup.layout (ViewGroup.java:5952)
android.widget.FrameLayout.layoutChildren (FrameLayout.java:323)
android.widget.FrameLayout.onLayout (FrameLayout.java:261)
com.android.internal.policy.DecorView.onLayout (DecorView.java:818)
android.view.View.layout (View.java:18793)
android.view.ViewGroup.layout (ViewGroup.java:5952)
android.view.ViewRootImpl.performLayout (ViewRootImpl.java:2625)
android.view.ViewRootImpl.performTraversals (ViewRootImpl.java:2341)
android.view.ViewRootImpl.doTraversal (ViewRootImpl.java:1493)

可能导致此错误的原因是什么？如果在此错误中没有列出任何类，我怎么能推断出问题是什么？

Answer 1

找到解决方案：

我正在使用Retrofit以及一些POJO模型类。我需要将以下行添加到proguard-rules.pro文件中：

-keep class package.to.models.** { *; }

从Google Play商店安装应用后，应用崩溃了

1 个答案: