minifyEnabled:true 发布应用崩溃支持 v4

Question

当我在发布 buildType 下的 build.gradle 文件中添加 minifyEnable:true 时，应用程序崩溃并显示以下日志：

Fatal Exception: java.lang.NullPointerException: Attempt to invoke virtual method 'int android.support.v4.view.ViewPager.getCurrentItem()' on a null object reference
   at com.myapp.springindicator.SpringIndicator.createPoints(Unknown Source)
   at com.myapp.springindicator.SpringIndicator.onLayout(Unknown Source)
   at android.view.View.layout(View.java:16636)
   at android.view.ViewGroup.layout(ViewGroup.java:5437)
   at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1735)
   at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1579)
   at android.widget.LinearLayout.onLayout(LinearLayout.java:1488)
   at android.view.View.layout(View.java:16636)
   at android.view.ViewGroup.layout(ViewGroup.java:5437)
   at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1735)
   at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1579)
   at android.widget.LinearLayout.onLayout(LinearLayout.java:1488)
   ...

有人可以帮助我吗？我已经在 proguard 文件中添加了这个：

-keep class android.support.v4.app.** { *; } -keep interface android.support.v4.app.** { *; } -keep class android.support.v7.app.** { *; } -keep interface android.support.v7.app.** { *; }

我也尝试使用 keep 应用类

Answer 1

-keep class android.support.** { *; } 对我来说效果很好。

尝试一下，因为您只是将类保持在 android.support.v4.app. 之下，并在 android.support.v4.view.

处崩溃

minifyEnabled:true 发布应用崩溃支持 v4

minifyEnabled:true in release app crash support v4

android

proguard

minify

gradle