Question

我有一个片段活动我需要将Text设置为该Activity中的文本视图，当我使用以下代码获取空指针异常时。可以使用任何其他方法来设置文本视图的数据。

public class Introduction extends Fragment  {
     TextView txt;
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
            // Inflate the layout for this fragment

         View v= inflater.inflate(R.layout.activity_introduction, container, false);
         txt=(TextView) v.findViewById(R.id.officeheader);
         return v;

        }
    public void setText(String text){

        txt.setText(text);
    }
    }

并在My Fragment Activity类中：

frgManager=getSupportFragmentManager();
         frgManager.beginTransaction()

        . replace(R.id.fragmentoffice, introduction,"introduction")
         .commit();

        introduction.setText(" Office Coffee that will \n have everyone talking ");

Answer 1

在包中设置字符串

Bundle bundl = new Bundle();
bundl.putString("Text", text);
introduction.setArguments(bundl)
frgManager=getSupportFragmentManager();
frgManager.beginTransaction()
. replace(R.id.fragmentoffice, introduction,"introduction")
.commit();

从包中获取文字

public class Introduction extends Fragment  {
     TextView txt;
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
            // Inflate the layout for this fragment
String str = getArguments().getString("Text");
         View v= inflater.inflate(R.layout.activity_introduction, container, false);
         txt=(TextView) v.findViewById(R.id.officeheader);
         setText(str);
         return v;

        }
    public void setText(String text){

        txt.setText(text);
    }
    }

Answer 2

你可以编写介绍构造函数，其中包含一个参数Type String，在onCreateView上，您可以初始化textivew和settext

如何以编程方式将文本设置为片段活动中的文本视图？

2 个答案: