title: App on release crashes, while on debug doesn't
body: <p>I'm developing an app using Android Studio, and when I switched from <strong>debug</strong> to <strong>release</strong> build variant, it began to crash. While on debug it doesn't happen anything at all. The real problem is that I can't find where is the true error, as every reference is renamed.</p>
  
  <p>Have you faced an error like this, that has happened only on <strong>release</strong>?</p>
  
  <p>The printed stack is this:</p>
  
  <pre><code>04-11 08:28:42.756    5997-5997/com.korcholis.clothio E/ActivityThread﹕ Failed to inflate
      android.view.InflateException: Binary XML file line #10: Error inflating class fragment
              at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:713)
              at android.view.LayoutInflater.rInflate(LayoutInflater.java:755)
              at android.view.LayoutInflater.inflate(LayoutInflater.java:492)
              at android.view.LayoutInflater.inflate(LayoutInflater.java:397)
              at android.view.LayoutInflater.inflate(LayoutInflater.java:353)
              at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:267)
              at android.app.Activity.setContentView(Activity.java:1906)
              at android.support.v7.a.g.a(Unknown Source)
              at android.support.v7.a.n.a(Unknown Source)
              at android.support.v7.a.g.setContentView(Unknown Source)
              at com.korcholis.clothio.SampleListActivity.onCreate(Unknown Source)
              at android.app.Activity.performCreate(Activity.java:5207)
              at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
              at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2309)
              at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2405)
              at android.app.ActivityThread.access$600(ActivityThread.java:156)
              at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1272)
              at android.os.Handler.dispatchMessage(Handler.java:99)
              at android.os.Looper.loop(Looper.java:137)
              at android.app.ActivityThread.main(ActivityThread.java:5303)
              at java.lang.reflect.Method.invokeNative(Native Method)
              at java.lang.reflect.Method.invoke(Method.java:525)
              at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:739)
              at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:555)
              at dalvik.system.NativeStart.main(Native Method)
       Caused by: java.lang.IllegalStateException: Could not find constructor that hast just a (Context) argument for helper class class com.korcholis.clothio.b.c
              at com.a.a.a.a.a.c(Unknown Source)
              at com.a.a.a.a.a.b(Unknown Source)
              at com.a.a.a.a.a.a(Unknown Source)
              at com.korcholis.clothio.fragments.SampleListFragment.a(Unknown Source)
              at android.support.v4.app.Fragment.i(Unknown Source)
              at android.support.v4.app.ae.a(Unknown Source)
              at android.support.v4.app.ae.b(Unknown Source)
              at android.support.v4.app.ae.a(Unknown Source)
              at android.support.v4.app.w.onCreateView(Unknown Source)
              at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:685)
              at android.view.LayoutInflater.rInflate(LayoutInflater.java:755)
              at android.view.LayoutInflater.inflate(LayoutInflater.java:492)
              at android.view.LayoutInflater.inflate(LayoutInflater.java:397)
              at android.view.LayoutInflater.inflate(LayoutInflater.java:353)
              at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:267)
              at android.app.Activity.setContentView(Activity.java:1906)
              at android.support.v7.a.g.a(Unknown Source)
              at android.support.v7.a.n.a(Unknown Source)
              at android.support.v7.a.g.setContentView(Unknown Source)
              at com.korcholis.clothio.SampleListActivity.onCreate(Unknown Source)
              at android.app.Activity.performCreate(Activity.java:5207)
              at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
              at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2309)
              at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2405)
              at android.app.ActivityThread.access$600(ActivityThread.java:156)
              at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1272)
              at android.os.Handler.dispatchMessage(Handler.java:99)
              at android.os.Looper.loop(Looper.java:137)
              at android.app.ActivityThread.main(ActivityThread.java:5303)
              at java.lang.reflect.Method.invokeNative(Native Method)
              at java.lang.reflect.Method.invoke(Method.java:525)
              at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:739)
              at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:555)
              at dalvik.system.NativeStart.main(Native Method)
       Caused by: java.lang.NoSuchMethodException: &lt;init&gt; [class android.content.Context]
              at java.lang.Class.getConstructorOrMethod(Class.java:423)
              at java.lang.Class.getConstructor(Class.java:397)
              at com.a.a.a.a.a.c(Unknown Source)
              at com.a.a.a.a.a.b(Unknown Source)
              at com.a.a.a.a.a.a(Unknown Source)
              at com.korcholis.clothio.fragments.SampleListFragment.a(Unknown Source)
              at android.support.v4.app.Fragment.i(Unknown Source)
              at android.support.v4.app.ae.a(Unknown Source)
              at android.support.v4.app.ae.b(Unknown Source)
              at android.support.v4.app.ae.a(Unknown Source)
              at android.support.v4.app.w.onCreateView(Unknown Source)
              at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:685)
              at android.view.LayoutInflater.rInflate(LayoutInflater.java:755)
              at android.view.LayoutInflater.inflate(LayoutInflater.java:492)
              at android.view.LayoutInflater.inflate(LayoutInflater.java:397)
              at android.view.LayoutInflater.inflate(LayoutInflater.java:353)
              at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:267)
              at android.app.Activity.setContentView(Activity.java:1906)
              at android.support.v7.a.g.a(Unknown Source)
              at android.support.v7.a.n.a(Unknown Source)
              at android.support.v7.a.g.setContentView(Unknown Source)
              at com.korcholis.clothio.SampleListActivity.onCreate(Unknown Source)
              at android.app.Activity.performCreate(Activity.java:5207)
              at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
              at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2309)
              at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2405)
              at android.app.ActivityThread.access$600(ActivityThread.java:156)
              at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1272)
              at android.os.Handler.dispatchMessage(Handler.java:99)
              at android.os.Looper.loop(Looper.java:137)
              at android.app.ActivityThread.main(ActivityThread.java:5303)
              at java.lang.reflect.Method.invokeNative(Native Method)
              at java.lang.reflect.Method.invoke(Method.java:525)
              at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:739)
              at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:555)
              at dalvik.system.NativeStart.main(Native Method)
  04-11 08:28:42.756    5997-5997/com.korcholis.clothio D/AndroidRuntime﹕ Shutting down VM
  04-11 08:28:42.756    5997-5997/com.korcholis.clothio W/dalvikvm﹕ threadid=1: thread exiting with uncaught exception (group=0x41902700)
  04-11 08:28:42.756    5997-5997/com.korcholis.clothio E/AndroidRuntime﹕ FATAL EXCEPTION: main
      java.lang.RuntimeException: Unable to start activity ComponentInfo{com.korcholis.clothio/com.korcholis.clothio.SampleListActivity}: android.view.InflateException: Binary XML file line #10: Error inflating class fragment
              at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2355)
              at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2405)
              at android.app.ActivityThread.access$600(ActivityThread.java:156)
              at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1272)
              at android.os.Handler.dispatchMessage(Handler.java:99)
              at android.os.Looper.loop(Looper.java:137)
              at android.app.ActivityThread.main(ActivityThread.java:5303)
              at java.lang.reflect.Method.invokeNative(Native Method)
              at java.lang.reflect.Method.invoke(Method.java:525)
              at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:739)
              at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:555)
              at dalvik.system.NativeStart.main(Native Method)
       Caused by: android.view.InflateException: Binary XML file line #10: Error inflating class fragment
              at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:713)
              at android.view.LayoutInflater.rInflate(LayoutInflater.java:755)
              at android.view.LayoutInflater.inflate(LayoutInflater.java:492)
              at android.view.LayoutInflater.inflate(LayoutInflater.java:397)
              at android.view.LayoutInflater.inflate(LayoutInflater.java:353)
              at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:267)
              at android.app.Activity.setContentView(Activity.java:1906)
              at android.support.v7.a.g.a(Unknown Source)
              at android.support.v7.a.n.a(Unknown Source)
              at android.support.v7.a.g.setContentView(Unknown Source)
              at com.korcholis.clothio.SampleListActivity.onCreate(Unknown Source)
              at android.app.Activity.performCreate(Activity.java:5207)
              at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
              at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2309)
              at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2405)
              at android.app.ActivityThread.access$600(ActivityThread.java:156)
              at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1272)
              at android.os.Handler.dispatchMessage(Handler.java:99)
              at android.os.Looper.loop(Looper.java:137)
              at android.app.ActivityThread.main(ActivityThread.java:5303)
              at java.lang.reflect.Method.invokeNative(Native Method)
              at java.lang.reflect.Method.invoke(Method.java:525)
              at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:739)
              at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:555)
              at dalvik.system.NativeStart.main(Native Method)
       Caused by: java.lang.IllegalStateException: Could not find constructor that hast just a (Context) argument for helper class class com.korcholis.clothio.b.c
              at com.a.a.a.a.a.c(Unknown Source)
              at com.a.a.a.a.a.b(Unknown Source)
              at com.a.a.a.a.a.a(Unknown Source)
              at com.korcholis.clothio.fragments.SampleListFragment.a(Unknown Source)
              at android.support.v4.app.Fragment.i(Unknown Source)
              at android.support.v4.app.ae.a(Unknown Source)
              at android.support.v4.app.ae.b(Unknown Source)
              at android.support.v4.app.ae.a(Unknown Source)
              at android.support.v4.app.w.onCreateView(Unknown Source)
              at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:685)
              at android.view.LayoutInflater.rInflate(LayoutInflater.java:755)
              at android.view.LayoutInflater.inflate(LayoutInflater.java:492)
              at android.view.LayoutInflater.inflate(LayoutInflater.java:397)
              at android.view.LayoutInflater.inflate(LayoutInflater.java:353)
              at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:267)
              at android.app.Activity.setContentView(Activity.java:1906)
              at android.support.v7.a.g.a(Unknown Source)
              at android.support.v7.a.n.a(Unknown Source)
              at android.support.v7.a.g.setContentView(Unknown Source)
              at com.korcholis.clothio.SampleListActivity.onCreate(Unknown Source)
              at android.app.Activity.performCreate(Activity.java:5207)
              at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
              at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2309)
              at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2405)
              at android.app.ActivityThread.access$600(ActivityThread.java:156)
              at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1272)
              at android.os.Handler.dispatchMessage(Handler.java:99)
              at android.os.Looper.loop(Looper.java:137)
              at android.app.ActivityThread.main(ActivityThread.java:5303)
              at java.lang.reflect.Method.invokeNative(Native Method)
              at java.lang.reflect.Method.invoke(Method.java:525)
              at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:739)
              at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:555)
              at dalvik.system.NativeStart.main(Native Method)
       Caused by: java.lang.NoSuchMethodException: &lt;init&gt; [class android.content.Context]
              at java.lang.Class.getConstructorOrMethod(Class.java:423)
              at java.lang.Class.getConstructor(Class.java:397)
              at com.a.a.a.a.a.c(Unknown Source)
              at com.a.a.a.a.a.b(Unknown Source)
              at com.a.a.a.a.a.a(Unknown Source)
              at com.korcholis.clothio.fragments.SampleListFragment.a(Unknown Source)
              at android.support.v4.app.Fragment.i(Unknown Source)
              at android.support.v4.app.ae.a(Unknown Source)
              at android.support.v4.app.ae.b(Unknown Source)
              at android.support.v4.app.ae.a(Unknown Source)
              at android.support.v4.app.w.onCreateView(Unknown Source)
              at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:685)
              at android.view.LayoutInflater.rInflate(LayoutInflater.java:755)
              at android.view.LayoutInflater.inflate(LayoutInflater.java:492)
              at android.view.LayoutInflater.inflate(LayoutInflater.java:397)
              at android.view.LayoutInflater.inflate(LayoutInflater.java:353)
              at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:267)
              at android.app.Activity.setContentView(Activity.java:1906)
              at android.support.v7.a.g.a(Unknown Source)
              at android.support.v7.a.n.a(Unknown Source)
              at android.support.v7.a.g.setContentView(Unknown Source)
              at com.korcholis.clothio.SampleListActivity.onCreate(Unknown Source)
              at android.app.Activity.performCreate(Activity.java:5207)
              at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
              at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2309)
              at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2405)
              at android.app.ActivityThread.access$600(ActivityThread.java:156)
              at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1272)
              at android.os.Handler.dispatchMessage(Handler.java:99)
              at android.os.Looper.loop(Looper.java:137)
              at android.app.ActivityThread.main(ActivityThread.java:5303)
              at java.lang.reflect.Method.invokeNative(Native Method)
              at java.lang.reflect.Method.invoke(Method.java:525)
              at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:739)
              at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:555)
              at dalvik.system.NativeStart.main(Native Method)
  </code></pre>
  
  <p>Thank you guys</p>
  
  <p>EDIT: So as AesSedai101 stated, it was a matter between Proguard and something I am using: Ormlite. So I'll add the tag and a proguard file that worked to me:</p>
  
  <pre><code>-keepattributes Signature
  -keep class com.korcholis.clothio.data.** {     *; }
  -keep class com.j256.**
  -keepclassmembers class com.j256.** { *; }
  -keep enum com.j256.**
  -keepclassmembers enum com.j256.** { *; }
  -keep interface com.j256.**
  -keepclassmembers interface com.j256.** { *; }
  </code></pre>
  
  <p>Replace <code>com.korcholis.clothio.data.**</code> with the package where you store your database models, but don't forget the final <code>.**</code></p>