我目前在我的代码中使用常规水平导航，这样当您单击按钮时，它将水平导航到新的片段。我想这样做，而不是调用一个新的片段，它只是在点击/再次点击时展开/折叠。我到目前为止的代码是： 这是活动：
public class ManageNewsCategoriesActivity extends AbsBaseDoubleButtonActivity {
private List<AdapterRow> mBreakingViews;
public HashSet<CategoryCheckableRow> mCategoriesMap = new HashSet<CategoryCheckableRow>();
private int mTitleId = R.string.title_manage;
public static void newInstance(final Activity activity) {
final Intent intent = new Intent(activity.getApplicationContext(), ManageNewsCategoriesActivity.class);
activity.startActivity(intent);
}
@Override
protected void onCreate(final Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_manage_news_categories);
overridePendingTransition(R.anim.slide_in_from_bottom, R.anim.no_animation);
mActiveFragment = ManageNewsCategoriesFragment.newInstance(getSupportFragmentManager(), 0);
}
public void animateTitle(final int textViewId) {
animateTitle(textViewId, R.anim.slide_in_from_right);
}
public void animateTitle(final int textViewId, final int animationId) {
final TextView titleView = (TextView) findViewById(textViewId);
final Animation animation = AnimationUtils.loadAnimation(this, animationId);
titleView.startAnimation(animation);
}
public void setBreakingViews(final List<AdapterRow> categoryRows) {
mBreakingViews = categoryRows;
}
public List<CategoryCheckableRow> getBreakingViews() {
return removeHeaders(mBreakingViews);
}
public List<AdapterRow> getBreakingViewsCategoryRows() {
if (mBreakingViews == null) {
return null;
}
return AbsBaseManageNewsFragment.getAClone(mBreakingViews);
}
private List<CategoryCheckableRow> removeHeaders(final List<AdapterRow> mCategoryRows) {
final List<CategoryCheckableRow> items = new ArrayList<CategoryCheckableRow>();
if (mCategoryRows != null) {
for (final AdapterRow row : mCategoryRows) {
if (row instanceof CategoryCheckableRow) {
final CategoryCheckableRow item = (CategoryCheckableRow) row;
items.add(item);
}
}
}
return items;
}
public boolean isDoneButtonEnabled() {
return !mCategoriesMap.isEmpty();
}
public void updateCategoriesMap(final HashSet<CategoryCheckableRow> categoryRows) {
for (final CategoryCheckableRow row : categoryRows) {
if (!mCategoriesMap.add(row)) {
mCategoriesMap.remove(row);
}
}
}
@Override
protected int getTitleId() {
return mTitleId;
}
@Override
public void updateTitleId(final int titleId) {
mTitleId = titleId;
updateTitleId();
}
这是片段：
public class ManageNewsCategoriesFragment extends Fragment implements OnClickListener,OnCheckedChangeListener {
public final static String TAG_MANAGE_NEWS_CATEGORIES_FRAGMENT = "ManageNewsCategoriesFragment";
public static final String TYPE = "Type";
public static final String BREAKINGVIEWS = "Breakingviews";
public static final String ANIMATION = "animation";
protected Button mPreferencesDoneButton;
public static ManageNewsCategoriesFragment newInstance(final FragmentManager manager, final int animation) {
final ManageNewsCategoriesFragment fragment = new ManageNewsCategoriesFragment();
final Bundle arguments = new Bundle();
arguments.putInt(ANIMATION, animation);
fragment.setArguments(arguments);
final FragmentInfo fragmentInfo = new FragmentInfo(TransactionMethods.ADD, R.id.manage_news_categories_container);
fragmentInfo.setFragmentTag(TAG_MANAGE_NEWS_CATEGORIES_FRAGMENT);
FragmentStackManager.getInstance().transitionFragment(manager, fragment, fragmentInfo);
return fragment;
}
@Override
public View onCreateView(final LayoutInflater inflater, final ViewGroup container, final Bundle savedInstanceState) {
final View view = inflater.inflate(R.layout.fragment_manage_news_categories, container, false);
final Bundle arguments = getArguments();
final int animation = arguments.getInt(ANIMATION, 0);
final ManageNewsCategoriesActivity activity = (ManageNewsCategoriesActivity) getActivity();
if (animation != 0) {
activity.animateTitle(R.id.actionbar_title, arguments.getInt(ANIMATION, 0));
}
return view;
}
protected void setupClickListeners() {
mPreferencesDoneButton = (Button) getActivity().findViewById(R.id.button_done);
Typeface face = Typeface.createFromAsset(mPreferencesDoneButton.getContext().getAssets(),
"fonts/proxima-nova-regular.ttf");
mPreferencesDoneButton.setTypeface(face);
mPreferencesDoneButton.setOnClickListener(this);
mPreferencesDoneButton.setEnabled(((ManageNewsCategoriesActivity) getActivity()).isDoneButtonEnabled());
}
@Override
public void onActivityCreated(final Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
final TextView titleView = (TextView) getActivity().findViewById(R.id.actionbar_title);
titleView.setText(R.string.title_manage);
initManageNewsCategoriesFragment();
}
private void initManageNewsCategoriesFragment() {
setupClickListeners();
final Button breakingViewsButton = (Button) getView().findViewById(R.id.button_breakingviews);
breakingViewsButton.setOnClickListener(this);
}
@Override
public void onClick(final View view) {
final ManageNewsCategoriesActivity activity = (ManageNewsCategoriesActivity) getActivity();
switch (view.getId()) {
case R.id.button_breakingviews:
ManageBreakingViewsFragment.newInstance(getFragmentManager());
return;
case R.id.button_done:
syncNewsCategories(activity);
break;
default:
break;
}
activity.onBackPressed();
}
private void syncNewsCategories(final ManageNewsCategoriesActivity activity) {
final List<CategoryCheckableRow> breakingViews = activity.getBreakingViews();
if ( ArrayUtils.isNotEmpty(breakingViews)) {
RestService.start(activity, new UserCategoriesSyncOperation(NewsContentProvider.USER_CATEGORIES_URI, breakingViews));
}
}
}
这是相应的xml：
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/altercolor2" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/altercolor2"
android:orientation="vertical" >
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<Button
android:id="@+id/button_breakingviews"
android:layout_width="match_parent"
android:layout_height="@dimen/manage_news_btn_ht"
android:layout_marginLeft="2dp"
android:layout_marginRight="2dp"
android:background="@drawable/manage_market_category_btnbg"
android:gravity="left|center_vertical"
android:paddingLeft="@dimen/frequent_padding_left"
android:text="@string/button_breakingviews"
android:textColor="#cccccc"
android:textSize="@dimen/title" />
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:paddingRight="17.5dp"
android:paddingTop="0dp"
android:src="@drawable/arrow_chevron_selector" />
</RelativeLayout>
</LinearLayout>
</FrameLayout>
Any clue how to go about the same? Please explain programmatically and with respect to my code to avoid confusion.
谢谢！