我在此LOC中收到空指针异常。这是堆栈跟踪。请帮帮我。
int score = data.getIntExtra(quizactivity.EXTRA_SCORE, 0);
和堆栈跟踪:
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method
'int android.content.Intent.getIntExtra(java.lang.String, int)'
on a null object reference
at com.example.mcqquiz.MainActivity.onActivityResult(MainActivity.java:49)
使用这样的try catch方法
try {
//your code
}
catch (Exception e) {
}