minifyEnabled：在发布应用程序崩溃的支持V4

Question

真当我在的build.gradle文件中添加minifyEnable:true释放buildType，该应用程序崩溃与此日志下：

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) 
    ... 

有人能帮助我吗？我已经在ProGuard的文件中添加了这个：

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

我也跟上应用程序类尝试

Answer 1

-keep class android.support.** { *; }工作很适合我。

试试，因为你只是只保留android.support.v4.app.下的类，并且在android.support.v4.view.