【Attempt to invoke virtual method 'boolean java.lang.String.equals(java.lang.Object)' on a null objec】的更多相关文章

报错android.view.InflateException: Binary XML file line #11: Attempt to invoke virtual method 'boolean

出现这种问题,打开Android monitor的调试信息发现是 android.view.InflateException: Binary XML file line #11: Attempt to invoke virtual method 'boolean... 后经过查找,发现: <view android:layout_width="1dp" android:layout_height="match_parent" android:layout_al…

Attempt to invoke virtual method 'boolean java.lang.String.equals(java.lang.Object)' on a null objec

遇到这个一场折腾了1个小时, 这是系统在解析XML的时候出错, 最后费了好大的劲才发现 XML文件中,<View>  写成小写的 <view> 了. 崩溃啊................... 各位同学遇到这种异常的时候,不妨检查下自己的XML布局文件!! 转载地址:http://blog.csdn.net/zmadmad/article/details/51211748…

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.…

Attempt to invoke interface method 'boolean java.util.List.add(java.lang.Object)' on a null

1.Android Studio报错 Attempt to invoke interface method 'boolean java.util.List.add(java.lang.Object)' on a null 原因:List没有初始化,比如 List<>list:  没有  List<>list = new ArrayList<>();…

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…

java.lang.NullPointerException: Attempt to invoke virtual method 'java.util.List com.yunweather.app.db.YunWeatherDB.loadProvinces()' on a null object reference

NullPointerException:查看自己的什么地方是否对空指针进行了操作 Attempt to invoke virtual method 'java.util.List com.yunweather.app.db.YunWeatherDB.loadProvinces()' on a null object reference 尝试用一个空对象引用调用LoadProvinces()方法,查看调用LoadProvinces()的对象是否初始化,很可能是因为你没有初始化就调用了LoadPr…

Attempt to invoke virtual method 'void android.app.ActionBar.setTitle的解决方法

在安卓4.4.2的关于蓝牙开发的一个sample BluetoothChat中,调试时,老是出错:Attempt to invoke virtual method 'void android.app.ActionBar.setTitle 上网查了一下,是这么说的: (http://www.tuicool.com/articles/IRzUR3M) The LayoutManager is probably the most interesting part of theRecyclerView …

Attempt to invoke interface method 'boolean java.util.List.add(java.lang.Object)' on a null object reference

尝试在一个空的对象引用上引用boolean java.util.List.add()这个方法: 错误例子: private ArrayList<String> classList; classList.add("2014211501"); 相当于classList为null.   正确实例: private ArrayList<String> classList=new ArrayList<String>(); classList.add("…

java.lang.NullPointerException: Attempt to invoke virtual method 'void 、Handler.removeMessages(int)' on a null object reference

onDestory进行释放Handler时,需要判断null if(null != mHandler) {             mHandler.removeMessages(MSG_CHANGE_TEXT_COLOR);             mHandler.removeMessages(MSG_JUMP_TO_SUCCESS_PAGE);             mHandler.removeMessages(MSG_PLAY_LITTLE_PEOPLE_ANIMATION);  …