我目前正面临另一个问题，这只发生在一些设备上。
这是Stack-trace：
java.lang.RuntimeException: Unable to start activity ComponentInfo{de.android.c/de.android.cc.MainActivity}: android.view.InflateException: Binary XML file line #7: Error inflating class <unknown>
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2295)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2349)
at android.app.ActivityThread.handleRelaunchActivity(ActivityThread.java:3877)
at android.app.ActivityThread.access$800(ActivityThread.java:159)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1322)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:5419)
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:1187)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1003)
at dalvik.system.NativeStart.main(Native Method)
Caused by: android.view.InflateException: Binary XML file line #7: Error inflating class <unknown>
at android.view.LayoutInflater.createView(LayoutInflater.java:626)
at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:56)
at android.view.LayoutInflater.onCreateView(LayoutInflater.java:675)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:700)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:761)
at android.view.LayoutInflater.inflate(LayoutInflater.java:498)
at android.view.LayoutInflater.inflate(LayoutInflater.java:398)
at de.android.cc.clean.a.a.onCreateView(Unknown Source)
at android.support.v4.app.Fragment.performCreateView(Unknown Source)
at android.support.v4.app.q.a(Unknown Source)
at android.support.v4.app.q.a(Unknown Source)
at android.support.v4.app.q.a(Unknown Source)
at android.support.v4.app.q.l(Unknown Source)
at android.support.v4.app.i.onStart(Unknown Source)
at de.android.cc.MainActivity.onStart(Unknown Source)
at android.support.v4.app.Fragment.performCreateView(Unknown Source)
at android.support.v4.app.q.a(Unknown Source)
at android.support.v4.app.q.a(Unknown Source)
at android.support.v4.app.q.a(Unknown Source)
at android.support.v4.app.q.l(Unknown Source)
at android.support.v4.app.i.onStart(Unknown Source)
at de.android.cc.MainActivity.onStart(Unknown Source)
at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1188)
at android.app.Activity.performStart(Activity.java:5382)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2266)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2349)
at android.app.ActivityThread.handleRelaunchActivity(ActivityThread.java:3877)
at android.app.ActivityThread.access$800(ActivityThread.java:159)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1322)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:5419)
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:1187)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1003)
at dalvik.system.NativeStart.main(Native Method)
at android.support.v4.app.Fragment.performCreateView(Unknown Source)
at android.support.v4.app.q.a(Unknown Source)
at android.support.v4.app.q.a(Unknown Source)
at android.support.v4.app.q.a(Unknown Source)
at android.support.v4.app.q.l(Unknown Source)
at android.support.v4.app.i.onStart(Unknown Source)
at de.android.contactscleaner2lib.MainActivity.onStart(Unknown Source)
at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1188)
at android.app.Activity.performStart(Activity.java:5382)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2266)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2349)
at android.app.ActivityThread.handleRelaunchActivity(ActivityThread.java:3877)
at android.app.ActivityThread.access$800(ActivityThread.java:159)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1322)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:5419)
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:1187)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1003)
at dalvik.system.NativeStart.main(Native Method)
at android.support.v4.app.Fragment.performCreateView(Unknown Source)
at android.support.v4.app.q.a(Unknown Source)
at android.support.v4.app.q.a(Unknown Source)
at android.support.v4.app.q.a(Unknown Source)
at android.support.v4.app.q.l(Unknown Source)
at android.support.v4.app.i.onStart(Unknown Source)
at de.android.cc.MainActivity.onStart(Unknown Source)
at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1188)
at android.app.Activity.performStart(Activity.java:5382)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2266)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2349)
at android.app.ActivityThread.handleRelaunchActivity(ActivityThread.java:3877)
at android.app.ActivityThread.access$800(ActivityThread.java:159)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1322)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:5419)
通常会导致这样的错误？
其中一台设备是N7000
编辑：
首先发布错误的Stacktrace