android - 在对话框android中显示我的 fragment

Question

我有一个扩展 fragment 的类。我希望在按下 An Activity 中的按钮时打开此 Fragment 及其在对话框中的布局，此外该 fragment 通常会在其位置打开。这可能吗？

这是我的 fragment (TipsFragment.java)

public class TipsFragment extends Fragment{

ListView list;
TipsAdapter tipsAdapter;
AlertDialog PageDialog;
DAO db;
Cursor c;

ArrayList<HashMap<String, String>> tipsList;
HashMap<String, String> map;

ArrayList<HashMap<String, String>> pages;
Integer tipType;

ImageButton page;
ImageButton add;
ImageButton search;

EditText inputAdd;
EditText inputSearch;

ImageView addImage;

RelativeLayout layoutAdd;
RelativeLayout layoutSearch;

int itemSelected;


 @Override
    public void onAttach(Activity activity) {
        super.onAttach(activity);
        db = new DAO(activity);
        db.open();
    }

public TipsFragment(){}

public TipsFragment(int tipType, int itemSelected ){

    this.tipType = tipType;
    this.itemSelected = itemSelected;
}



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

    View rootView = inflater.inflate(R.layout.tips_fragement, container, false);

    System.out.println("tipType: "+tipType);
    System.out.println("itemSelected: "+itemSelected);

    page = (ImageButton) rootView.findViewById(R.id.pager);
    add = (ImageButton) rootView.findViewById(R.id.add);
    search = (ImageButton) rootView.findViewById(R.id.search);

    inputSearch = (EditText) rootView.findViewById(R.id.inputSearch);
    inputAdd = (EditText) rootView.findViewById(R.id.inputAdd);

    addImage = (ImageView) rootView.findViewById(R.id.imageAdd);

    layoutAdd  = (RelativeLayout) rootView.findViewById(R.id.layoutAdd);
    layoutSearch   = (RelativeLayout) rootView.findViewById(R.id.layoutSearch);

    if (tipType != 0) {
        switch (tipType) {
        case 1:
            System.out.println("All tips");
            if (getActivity().getIntent().getStringExtra("startFrom") == null) {
                c = db.getTips("0");
            } else {
                c = db.getTips(getActivity().getIntent().getStringExtra("startFrom"));
            }

            break;
        case 2:
            System.out.println("favorite tips");
            c = db.getFavoriteTips();
            page.setVisibility(View.GONE);
            System.out.println("in favorite, count_records: "+c.getCount());
            break;

        }
    }

    System.out.println("count_records: "+c.getCount());

    if (c.getCount() != 0) {

        if (getActivity().getIntent().getStringExtra("startLabel") != null) {
            page = (ImageButton) rootView.findViewById(R.id.pager);
        }
        tipsList = new ArrayList<HashMap<String, String>>();

        list = (ListView) rootView.findViewById(R.id.tipList);

        do {
            map = new HashMap<String, String>();

            // adding each child node to HashMap key =&gt; value
            map.put(DAO.TIP_ID, c.getString(c.getColumnIndex(c.getColumnName(0))));
            map.put(DAO.TIP_CONTENT, c.getString(c.getColumnIndex(c.getColumnName(1))));

            // adding HashList to ArrayList
            tipsList.add(map);

        } while (c.moveToNext());

        // Getting adapter by passing xml data ArrayList
        tipsAdapter = new TipsAdapter(getActivity(), tipsList);
        list.setAdapter(tipsAdapter);

        // Click event for single list row
        list.setOnItemClickListener(new OnItemClickListener() {

            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {

                map = tipsList.get(position);

                System.out.println("in list select item, tipType: "+tipType);

                if (!MainActivity.tSlidingLayer.isOpened()) {
                    MainActivity.tSlidingLayer.openLayer(true);
                }


            }
        });

        page.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                // Strings to Show In Dialog with Radio Buttons


            }
        });

        add.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {                   


            }
        });

        search.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {


            }
        });

        inputSearch.addTextChangedListener(new TextWatcher() {

            public void afterTextChanged(Editable s) {

            }

            public void beforeTextChanged(CharSequence s, int start, int count, int after) {

            }

            public void onTextChanged(CharSequence s, int start, int before, int count) {

            }
        });

    } 


    addImage.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            Toast.makeText(getActivity(), "addImage pressed", Toast.LENGTH_LONG).show();
        }
    });

    return rootView;
}

这是布局 tips_fragement.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:ads="http://schemas.android.com/apk/lib/com.google.ads"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_marginLeft="10dp"
android:layout_marginRight="5dp"

android:orientation="vertical" >

<LinearLayout
    android:id="@+id/titleBar"
    android:layout_width="match_parent"
    android:layout_height="50dp"
    android:gravity="center"
    android:orientation="horizontal" >

        <ImageButton
            android:id="@+id/add"
            android:layout_width="45dp"
            android:layout_height="35dp"
            android:layout_alignParentRight="true"
            android:layout_centerVertical="true"
            android:scaleType="fitXY"
            android:src="@drawable/add" />

        <ImageButton
            android:id="@+id/search"
            android:layout_width="45dp"
            android:layout_height="35dp"
            android:layout_alignParentRight="true"
            android:layout_centerVertical="true"
            android:scaleType="fitXY"
            android:src="@drawable/search" />

        <ImageButton
            android:id="@+id/pager"
            android:layout_width="45dp"
            android:layout_height="35dp"
            android:layout_alignParentRight="true"
            android:layout_centerVertical="true"
            android:scaleType="fitXY"
            android:src="@drawable/pager" />

</LinearLayout>

<View
    android:layout_width="fill_parent"
    android:layout_height="5dip"
    android:background="@drawable/shadow" >
</View>


<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/layoutAdd"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:visibility="gone" >

<EditText
    android:id="@+id/inputAdd"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:hint="Add" />

 <ImageView
    android:id="@+id/imageAdd"
    android:padding="5dp"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignTop="@+id/inputAdd"
    android:layout_alignBottom="@+id/inputAdd"
    android:layout_alignRight="@+id/inputAdd"
    android:src="@android:drawable/ic_menu_add" />

</RelativeLayout>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/layoutSearch"
android:visibility="gone" >

<EditText
    android:id="@+id/inputSearch"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:hint="Search"/>

 <ImageView
    android:id="@+id/imageSearch"
    android:padding="5dp"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignTop="@+id/inputSearch"
    android:layout_alignBottom="@+id/inputSearch"
    android:layout_alignRight="@+id/inputSearch"
    android:src="@android:drawable/ic_menu_search" />

</RelativeLayout>

<ListView
    android:id="@+id/tipList"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_below="@+id/buttons"
    android:divider="#351802"
    android:dividerHeight="2dp"
    android:listSelector="@drawable/list_selector" />

</LinearLayout>

Answer 1

由于 Android 支持 nesting Fragments(在支持库中可用)您可以将您的 TipsFragment 显示为另一个 DialogFragment 的内容。尽可能避免使用此解决方案。

更好的解决方案是使 TipsFragment 扩展 DialogFragment这样您就可以内联或在对话框中显示 Fragment 。

1 - 使 TipsFragment 扩展 DialogFragment

public class TipsFragment extends DialogFragment {...}

2 - 在按钮上单击使用 FragmentTransaction.add或 FragmentTransaction.replace显示 DialogFragment 内联或将其包含在您的布局中并更改其可见性。

3 - 将 TipsFragment 显示为对话框

TipsFragment fr = new TipsFragment();
fr.show(getSupportFragmentManager(), "dialog_fragment_tag");

指南:Performing Fragment Transactions .来自 SDK samples 的 ApiDemos 应用程序中提供了更多示例