Describe the bug We use a URL to display Lottie. The URL seems to work most of the time but It gives NullPointerException sometimes here are the logs: Fatal Exception: java.lang.NullPointerException Attempt to invoke interface method 'in...
版本:2.5.8 华为 LIO AL00 系统版本 Android 10,level 29 ROM HuaWei/EMOTION CPU架构 arm64-v8a Caused by: 5 java.lang.NullPointerException:Attempt to invoke interface method 'int java.util.List.size()' on a null object reference 6 com.luck.picture.lib...
java.lang.NullPointerException: Attempt to invoke interface method 'int cn.sdut.zhouprj.IMyAidlInterface.sum(int, int)' on a null object reference来源:2-2 AIDL案例(二) ABCzhouxueqin 2016-10-21 20:00AIDL案例(一)(二),跟着老师做下来,报空指针异常,即得不到接口的对象,没法进行求和运算,不知道...
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: privateArrayList<String>classList; classList.add("2014211501"); 相当于classList为null。 正确实例: privateArra...
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<>lis
形式二:错误代码 java.lang.NullPointerException: Attempt to invoke interface method 'void com.example.mvp_demo.IPresenter.search()' on a null object reference 定义了一个IPresenter对象,但是没有为其赋值 private IPresenter mPresenter; 解决方案: ...
java.lang.NullPointerException: Attempt to invoke virtual method 'int android.view.View.getImporta.. 此类问题主要是由于,内部类没有实现序列化接口而产生的,哈哈是不是一语惊醒梦中人呢? 一开始是空指针,我以为是什么幺蛾子呢,不就是个空指针,凭着拿空指针不当回事的心就去解决了,慢慢才发现,我值都打印...
java.lang.NullPointerException: Attempt to invoke virtual method 'int android.content.Intent.getI... 这个报错比较骚,完全只是因为Intent没有写好而已,下面是错误的写法(最好不要在方法外赋值): 进入本活动时即刻报错: 11-1018:23:24.23117152-17152/?E/AndroidRuntime:FATALEXCEPTION:main...
directly modified into int xxx=0; 2. There is another, such as: Tv2= (TextView) Findviewbyid (R.id.textview); The R.id.textview in the back is wrong. 3. And then the above one. Take a good look, tart! Attempt to invoke interface method...
java.lang.NullPointerException: Attempt to invoke virtual method 'int android.database.sqlite.SQLiteDatabase.delete(java.lang.String, java.lang.String, java.lang.String[])' on a null object reference 1. 通过调用数据库中的删除方法,删除下载管理中的声音文件。