将 RecyclerView(RecyclerFragment) 添加到对话框答案

【问题标题】：Add RecyclerView(RecyclerFragment) to a Dialog将 RecyclerView(RecyclerFragment) 添加到对话框
【发布时间】：2015-08-07 06:55:06
【问题描述】：

我有我的自定义 RecyclerView 来创建一个 ListView。当我尝试在布局的 id 中填充列表视图时，它的效果很好。

FragmentTransaction ft = getFragmentManager().beginTransaction();
Bundle bundle = new Bundle();
bundle.putBoolean("enablePullToRefresh", false);
GridValues gridValues = new GridValues();
gridValues.rowViewLayout = R.layout.my_detail_row_view;

gridValues.delegate = this;

mygrid = new CustomGridView(gridValues, bundle);
mygrid.showAsGrid = true;
mygrid.spanCount = 2;
mygrid.layoutOrientation = LinearLayoutManager.VERTICAL;
mygrid.noRowColor = true;
mygrid.gridName = "mygrid";

mygrid.setArguments(mygrid.bundle);
ft.replace(R.id.MyGridContainer, mygrid);

现在，我想在对话框中填充一个新列表。我该怎么做？

我试过了，将 mygrid 设置为静态

public static class MyDialogFragment extends DialogFragment {
    static MyDialogFragment newInstance() {
        return new MyDialogFragment();
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        return mygrid.getView();
    }
}

然后，

FragmentTransaction ft = getFragmentManager().beginTransaction();
DialogFragment newFragment = MyDialogFragment.newInstance();
ft.add(R.id.MyGridContainer, newFragment);
//getView().findViewById(R.id.MyGridContainer).setVisibility(View.VISIBLE);
ft.commit();

【问题讨论】：

只需应用与 normal Fragment 相同的逻辑
为什么不使用 AlertDialog.Builder 方法？在那里你可以调用 addView()
@Blackbelt ，我尝试使用 FragmentTransaction 但不幸的是它没有用。我对核心概念不太了解，我仍然是一个学习者。
请发布CustomGridView是什么
@bGorle 只是一个 RecyclerView , Insipred(!) 来自Here..

标签： android android-fragments android-alertdialog android-recyclerview

【解决方案1】：

DialogFragment 只是另一个 Fragment，像对任何其他 Fragment 所做的那样扩展您的自定义视图。

public class MyDialogFragment extends DialogFragment {
    private RecyclerView mRecyclerView;
    private MyRecyclerAdapter adapter;
    // this method create view for your Dialog
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
          //inflate layout with recycler view
         View v = inflater.inflate(R.layout.fragment_dialog, container, false);
        mRecyclerView = (RecyclerView) v.findViewById(R.id.recycler_view);
        mRecyclerView.setLayoutManager(new LinearLayoutManager(this));
        //setadapter
        CustomAdapter adapter = new MyRecyclerAdapter(context, customList);
            mRecyclerView.setAdapter(adapter);
         //get your recycler view and populate it.
         return v;
    }
}

【讨论】：

嗨，当我添加回收器视图并启用滚动条时，滚动条不可见（即使在 XML 中设置滚动条=垂直后，我也尝试设置可绘制对象）。我认为这可能与主题有关。你知道为什么吗？

【解决方案2】：

接受的答案有效，但需要额外的努力才能使其更像标准对话。

下面是另一种可能的方式，它允许您保留所有对话框功能（例如标题、图标、正/负/中性按钮）。这个想法是覆盖onCreateDialog并使用AlertDialog.Builder#setView()方法

public class MyDialogFragment extends DialogFragment {
    private RecyclerView mRecyclerView;

    @NonNull
    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        mRecyclerView = new RecyclerView(getContext());
        // you can use LayoutInflater.from(getContext()).inflate(...) if you have xml layout
        mRecyclerView.setLayoutManager(new LinearLayoutManager(getContext()));
        mRecyclerView.setAdapter(/* your adapter */);

        return new AlertDialog.Builder(getActivity())
                .setTitle(/* your title */)
                .setView(mRecyclerView)
                .setPositiveButton(android.R.string.ok,
                        new DialogInterface.OnClickListener() {
                            public void onClick(DialogInterface dialog, int whichButton) {
                                // do something
                            }
                        }
                ).create();
    }
}

【讨论】：

【解决方案3】：

假设您有一个名为 mygrid 的静态 normal Fragment，您的 DialogFragment 应该如下所示：

public class MyDialogFragment extends DialogFragment {
    static MyDialogFragment newInstance() {
        return new MyDialogFragment();
    }

    // this method create view for your Dialog
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        return mygrid.getView();
    }

    @NonNull
    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        Dialog dialog = new Dialog(getActivity());
        return dialog;
    }
}

你应该如何展示它：

DialogFragment fragment = MyDialogFragment.newInstance();
fragment.show(getSupportFragmentManager(), "some tag"); // please refer to DialogFragment#show() method in documentations.

【讨论】：

【解决方案4】：

在对话框片段中显示 RecyclerView 就像在普通片段中一样简单。但是要在对话框片段中显示，您需要创建一个对话框，例如：

public class AppDialogs extends DialogFragment {
private AlertDialog.Builder builder;

public static AppDialogs newInstance(int dialogNo, String title, String msg)
{
    AppDialogs fragment = new AppDialogs();
    Bundle args = new Bundle();
    args.putInt("dialogNo",dialogNo);
    args.putString("title", title);
    args.putString("msg", msg);
    fragment.setArguments(args);

    return fragment;
}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState)
{
    if(android.os.Build.VERSION.SDK_INT<=android.os.Build.VERSION_CODES.KITKAT) {
        getDialog().getWindow().setBackgroundDrawable(new ColorDrawable(Color.argb(0, 0, 0, 0)));
    }
    return null;
}


@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {

    Bundle bundle = getArguments();
    int pos = bundle.getInt("dialogNo");
    switch (pos) {
        case 0:
            return  showList();


    }

    return super.onCreateDialog(savedInstanceState);

}


private Dialog showList() {
    builder = new AlertDialog.Builder(getActivity(), R.style.app_dialog_theme);
    builder.setTitle(title);


RecyclerView rView;
  builder.setView(rView);

        return builder.create();
    }
}

并从您的片段或活动中调用它，您不需要任何容器 ID，只需调用这些行 AppDialogs appDialogs = AppDialogs.newInstance(0, title, msg); appDialogs.setCancelable(false); appDialogs.show(getFragmentManager(), null);

如果不是，它应该可以完成你的工作，请告诉我。

【讨论】：