Question

我有一个问题，我使用bundle将数据从片段发送到dialogfragment，但是当我点击片段布局中的按钮成功从片段中获取数据时出现问题但是在我的dialogfragment中它获得了null值，当我调试我发现我的对话框片段运行两次，以便为什么我得到空值。任何解决这个问题的建议，对不起我的英语，希望能理解我的问题。

这是我的onclick将数据传递给我的对话框片段

 Button[i].setBackgroundColor(0xFF00FF00);
 Button[i].setOnClickListener(new View.OnClickListener() {
                            @Override
                            public void onClick(View view) {
                               TextView test = (TextView)getView().findViewById(R.id.testproductname);
                                test.setText(pName);
                                String testproductname = test.getText().toString();

                                Bundle args = new Bundle();
                                args.putString("key", testproductname);
                                FragmentDialog newFragment = new FragmentDialog();
                                newFragment.setArguments(args);
                                newFragment.show(getActivity().getSupportFragmentManager(), "TAG");

                                showTheDialog();
                     }
             });
 }
protected void showTheDialog() {
    FragmentManager fm = getActivity().getSupportFragmentManager();
    FragmentDialog overlay = new FragmentDialog();
    overlay.show(fm, "FragmentDialog");

 }

FragmentDialog

   public class FragmentDialog extends DialogFragment {

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        Dialog dialog = super.onCreateDialog(savedInstanceState);
        dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
        //dialog.getWindow().setBackgroundDrawable(new ColorDrawable(Color.YELLOW));
        dialog.getWindow().setLayout(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);

        return dialog;
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle
            savedInstanceState) {
        View view = inflater.inflate(R.layout.prompt_quantity, container);

        // tab slider
        sectionsPagerAdapter = new SectionsPagerAdapter(getChildFragmentManager());

        // Set up the ViewPager with the sections adapter.
        viewPager = (ViewPager) view.findViewById(R.id.modifierpager);
        viewPager.setAdapter(sectionsPagerAdapter);

        Bundle mArgs = getArguments();
        pName = mArgs.getString("key","asdasd");

        final TextView tpn = (TextView)getView().findViewById(R.id.gtestproductname);
        tpn.setText(pName);
}

Answer 1

  newFragment.show(getActivity().getSupportFragmentManager(), "TAG");

                            showTheDialog();

你不需要两次调用show，这个逻辑两次绘制视图。这就是你有异常的原因。删除第二个。

Android从fragment片段传递到dialogfragment时获取值null

1 个答案: