我无法使用从 Activity 传递到片段的捆绑字符串数据在 textView 中设置文本

Question

Data pass from ProjectDetailActivity to ProjectDetailFragment ,I already check that data can pass to fragment by using Toast to show data as you can see in the code , but the problem is I cant set text in Textview by using data from bundle . If you see some error in this code please let me know . Thank a lot.

ProjectDetailActivity Class

         private String project_key,project_name,project_priority,project_category,
                        project_start_date ,project_end_date,project_description;
         @Override
         protected void onCreate(Bundle savedInstanceState) {
              super.onCreate(savedInstanceState);
              setContentView(R.layout.activity_project_detail);

              Intent intent = getIntent();
              project_key         = intent.getStringExtra("project_key");
              project_name        = intent.getStringExtra("project_name");
              project_category    = intent.getStringExtra("project_category");
              project_priority    = intent.getStringExtra("project_priority");

              Bundle bundle = new Bundle();
              bundle.putString("project_key",project_key);
              bundle.putString("project_name",project_name);
              bundle.putString("project_category",project_category);
              bundle.putString("project_priority",project_priority);

              ProjectDetailFragment project_detail_fragment =new ProjectDetailFragment();
              project_detail_fragment.setArguments(bundle);
              getSupportFragmentManager().beginTransaction()
                .replace(R.id.project_detail_fragment,project_detail_fragment)
                .commit();

          }
     }

ProjectDetailFragment Class

 public class ProjectDetailFragment extends Fragment {
      private View root;

      private String project_key,project_name,project_priority,project_category,


      private TextView project_name_textView , project_priority_textView ,
                       project_category_textView ;

      private Context mContext;

      public ProjectDetailFragment() { }

      @Override
      public void onCreate(@Nullable Bundle savedInstanceState) {
           super.onCreate(savedInstanceState);
           if (getArguments() != null) {
                Bundle bundle = getArguments();
                project_key           = bundle.getString("project_key");
                project_name          = bundle.getString("project_name");
                project_priority      = bundle.getString("project_category");
                project_category      = bundle.getString("project_priority");
           }
      }

      public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container, Bundle 
                  savedInstanceState) {
            root =  inflater.inflate(R.layout.fragment_project_detail, container,false);

            project_name_textView        = root.findViewById(R.id.project_name_textView);
            project_priority_textView    = root.findViewById(R.id.priority_textView);
            project_category_textView    = root.findViewById(R.id.category_textView);


            project_name_textView.setText(project_name);
            project_priority_textView.setText(project_priority);
            project_category_textView.setText(project_category);

            Toast.makeText(mContext,"TASK ACTIVITY\n"+
                    project_key+"\n"+project_name+"\n"+project_category+"\n"
                    +project_priority+"\n",Toast.LENGTH_SHORT).show();

            return root;
       }

       @Override
       public void onAttach(Context context) {
            super.onAttach(context);
            mContext=context;
       }
 }

Answer 1

如果 Toast 正在向您显示数据，则表示接收数据没有问题，我可以在将数据设置为文本视图时看到没有错误，但请检查您的 xml，如果是文本，请检查文本颜色颜色与背景颜色相匹配，例如文本视图背景是白色，文本颜色也是白色，显然你看不到文本。或者，如果没有，您可以这样尝试：::: project_name_textView.setText(String.value of(project_name));

我无法使用从 Activity 传递到片段的捆绑字符串数据在 textView 中设置文本

I cant set text in textView by using bundle String data that pass from Activity to fragment

java

android

bundle

textview