Question

我试图通过一个片段来传播一个相同的片段并传递参数，它的工作方式，但传递的参数应用于前一个片段，但不应用于新片段。

该片段包含TextView和Spinner。

片段类：

public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, Bundle savedInstanceState) {

    return inflater.inflate(R.layout.myfragment,container,false);
}

@Override
public void onActivityCreated(@Nullable Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);

    Bundle b = getArguments();
    qust = b.getString("Question","");
    id = b.getInt("id");

    final connection con = (connection) getActivity();

    question = (TextView) getActivity().findViewById(R.id.question);
    spinner = (Spinner) getActivity().findViewById(R.id.spinner);

    question.setText(qust);
    ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(getActivity(),id,R.layout.support_simple_spinner_dropdown_item);
    spinner.setAdapter(adapter);
    spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
        @Override
        public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) {
            if (i!=0)
                con.inflate();
        }

        @Override
        public void onNothingSelected(AdapterView<?> adapterView) {

        }
    });

}

当用户选择前一个片段微调器中的任何项目时，我正在对片段进行膨胀。

MainActivity类：

    public class MainActivity extends AppCompatActivity implements connection {

    int count;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        MyFragments mF = new MyFragments();
        Bundle b = new Bundle();
        b.putString("Question","Where are you?");
        b.putInt("id",R.array.planets_array);
        mF.setArguments(b);
        FragmentManager manage = getFragmentManager();
        FragmentTransaction trans = manage.beginTransaction();
        trans.add(R.id.root,mF,"frag");
        trans.commit();

    }

    @Override
    public void inflate() {

        MyFragments f = new MyFragments();
        Bundle b = new Bundle();
        b.putString("Question","what are you doing?");
        b.putInt("id",R.array.colours);
        f.setArguments(b);
        FragmentTransaction tran = getFragmentManager().beginTransaction();
        tran.add(R.id.root,f,"added");
        tran.commit();
    }
}

用于传递黑白片段的界面：

  public interface connection {

    void inflate();
}

screenshot

Answer 1

我认为已经发生了，因为你实例化了新的片段你的inflate（）方法没有唯一的TAG。设置唯一的TAG或使用不同的添加（@IdRes int containerViewId，Fragment fragment）。

通过片段膨胀片段并传递参数

1 个答案: