Caused by: java.lang.NullPointerException: Attempt to write to field 'int android.app.Fragment.mNextAnim' on a null object reference

【Caused by: java.lang.NullPointerException: Attempt to write to field 'int android.app.Fragment.mNextAnim' on a null object reference】的更多相关文章

Caused by: java.lang.NullPointerException: Attempt to write to field 'int android.app.Fragment.mNextAnim' on a null object reference

原因fragment必须先add(),才能remove(),故remove前先做判空操作参考:http://www.cnblogs.com/hixin/p/4427276.html…

Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.app.ActionBar.setDisplayShowHomeEnabled(boolean)' on a null object reference

/********************************************************************************* * Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.app.ActionBar.setDisplayShowHomeEnabled(boolean)' on a null object referenc…

java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.love5/com.example.love5.Main11Activity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.

若有 java.lang.RuntimeException和 java.lang.NullPointerException: Attempt to invoke virtual method 'void android.一起的异常报错, 很大几率是因为控件实列写错了,好好检查R.id.xx有没有写错, 多次的粗心大意犯的同样的错误,以此记录.…

java.lang.NullPointerException: Attempt to invoke virtual method 'int com.example.xxx.Json.NewsBean.getError_code()' on a null object reference错误解决

AS在运行的过程中出现了错误: java.lang.NullPointerException: Attempt to invoke virtual method 'int com.example.xxx.Json.NewsBean.getError_code()' on a null object reference AS会报异常:异常:No Network Security Config specified, using platform default.是高版本联网失败的问题解决办法:在清…

Attempt to write to field 'android.support.v4.app.FragmentManagerImpl android.support.v4.app.Fragment.mFragmentManager' on a null object reference

E/AndroidRuntime﹕ FATAL EXCEPTION: mainProcess: org.example.magnusluca.drawertestapp, PID: 3624java.lang.NullPointerException: Attempt to write to field 'android.support.v4.app.FragmentManagerImpl android.support.v4.app.Fragment.mFragmentManager' on…

Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'java.util.List com.catherine.forrealm.about_utils.RealmHelper.findAllStudent()' on a null object reference

报错: 解决方法: private RealmHelper realm_search = new RealmHelper(); 进而发现在写RecyclerView时,遗漏如下代码: recy_search.setHasFixedSize(true); recy_search.setNestedScrollingEnabled(true); recy_search.setLayoutManager(new GridLayoutManager(SearchActivity.this,1)); 将其…

Caused by: java.lang.NullPointerException, java.lang.reflect.InvocationTargetExc

java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.…