我在这里有一个android应用程序的某些部分,没有明显的原因而崩溃.
RL0恰好是用XML定义的一些LinearLayout,其中已经包含一些其他不相关的内容.老实说,我大部分时间都在使用C,所以我最初可能不太了解为什么在android中某些事情做的明显不同,但是我正在努力.关于如何解决该崩溃的任何帮助?
错误消息状态为NullPointerException.
谢谢.
public class Osteoporoza extends Activity {
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_osteoporoza);
LinearLayout RL0=(LinearLayout)findViewById(R.id.RL0);
page[] pages=new page[10];
RL0.addView(pages[0].pageLL0);//doesn't crash without this line, yet i need to have some way of adding n objects that follow a pattern, i.e. a class.
class page
{
public LinearLayout pageLL0;
public ScrollView pageUpperScroll1;
public TextView pageTextView2;
public ScrollView pageLowerScroll1;
public LinearLayout pageAnswerButtonLL2;
public Button AnswerButton3_1;
public Button AnswerButton3_2;
public Button AnswerButton3_3;
public Button AnswerButton3_4;
page()
{
pageAnswerButtonLL2.addView(AnswerButton3_1);
pageAnswerButtonLL2.addView(AnswerButton3_2);
pageAnswerButtonLL2.addView(AnswerButton3_3);
pageAnswerButtonLL2.addView(AnswerButton3_4);
pageLowerScroll1.addView(pageAnswerButtonLL2);
pageUpperScroll1.addView(pageTextView2);
pageLL0.addView(pageUpperScroll1);
pageLL0.addView(pageLowerScroll1);
}
}