diff options
Diffstat (limited to 'samples/Support13Demos/src')
4 files changed, 506 insertions, 2 deletions
diff --git a/samples/Support13Demos/src/com/example/android/supportv13/app/CountingFragment.java b/samples/Support13Demos/src/com/example/android/supportv13/app/CountingFragment.java index 8672ed22a..d52955b21 100644 --- a/samples/Support13Demos/src/com/example/android/supportv13/app/CountingFragment.java +++ b/samples/Support13Demos/src/com/example/android/supportv13/app/CountingFragment.java @@ -58,10 +58,9 @@ public class CountingFragment extends Fragment { @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { - View v = inflater.inflate(R.layout.hello_world, container, false); + View v = inflater.inflate(R.layout.counting, container, false); View tv = v.findViewById(R.id.text); ((TextView)tv).setText("Fragment #" + mNum); - tv.setBackgroundDrawable(getResources().getDrawable(android.R.drawable.gallery_thumb)); return v; } } diff --git a/samples/Support13Demos/src/com/example/android/supportv13/app/FragmentNestingPagerSupport.java b/samples/Support13Demos/src/com/example/android/supportv13/app/FragmentNestingPagerSupport.java new file mode 100644 index 000000000..0a88a0507 --- /dev/null +++ b/samples/Support13Demos/src/com/example/android/supportv13/app/FragmentNestingPagerSupport.java @@ -0,0 +1,159 @@ +/* + * Copyright (C) 2012 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package com.example.android.supportv13.app; + +import java.util.ArrayList; + +import com.example.android.supportv13.R; + +import android.app.ActionBar; +import android.app.ActionBar.Tab; +import android.app.Activity; +import android.app.Fragment; +import android.app.FragmentTransaction; +import android.content.Context; +import android.os.Bundle; +import android.support.v13.app.FragmentPagerAdapter; +import android.support.v4.view.ViewPager; + +//BEGIN_INCLUDE(complete) +public class FragmentNestingPagerSupport extends Activity { + ViewPager mViewPager; + TabsAdapter mTabsAdapter; + + @Override + protected void onCreate(Bundle savedInstanceState) { + super.onCreate(savedInstanceState); + + mViewPager = new ViewPager(this); + mViewPager.setId(R.id.pager); + setContentView(mViewPager); + + final ActionBar bar = getActionBar(); + bar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS); + bar.setDisplayOptions(0, ActionBar.DISPLAY_SHOW_TITLE); + + mTabsAdapter = new TabsAdapter(this, mViewPager); + mTabsAdapter.addTab(bar.newTab().setText("Simple"), + CountingFragment.class, null); + mTabsAdapter.addTab(bar.newTab().setText("List"), + FragmentPagerSupport.ArrayListFragment.class, null); + mTabsAdapter.addTab(bar.newTab().setText("Cursor"), + CursorFragment.class, null); + mTabsAdapter.addTab(bar.newTab().setText("Tabs"), + FragmentTabsFragment.class, null); + + if (savedInstanceState != null) { + bar.setSelectedNavigationItem(savedInstanceState.getInt("tab", 0)); + } + } + + @Override + protected void onSaveInstanceState(Bundle outState) { + super.onSaveInstanceState(outState); + outState.putInt("tab", getActionBar().getSelectedNavigationIndex()); + } + + /** + * This is a helper class that implements the management of tabs and all + * details of connecting a ViewPager with associated TabHost. It relies on a + * trick. Normally a tab host has a simple API for supplying a View or + * Intent that each tab will show. This is not sufficient for switching + * between pages. So instead we make the content part of the tab host + * 0dp high (it is not shown) and the TabsAdapter supplies its own dummy + * view to show as the tab content. It listens to changes in tabs, and takes + * care of switch to the correct paged in the ViewPager whenever the selected + * tab changes. + */ + public static class TabsAdapter extends FragmentPagerAdapter + implements ActionBar.TabListener, ViewPager.OnPageChangeListener { + private final Context mContext; + private final ActionBar mActionBar; + private final ViewPager mViewPager; + private final ArrayList<TabInfo> mTabs = new ArrayList<TabInfo>(); + + static final class TabInfo { + private final Class<?> clss; + private final Bundle args; + + TabInfo(Class<?> _class, Bundle _args) { + clss = _class; + args = _args; + } + } + + public TabsAdapter(Activity activity, ViewPager pager) { + super(activity.getFragmentManager()); + mContext = activity; + mActionBar = activity.getActionBar(); + mViewPager = pager; + mViewPager.setAdapter(this); + mViewPager.setOnPageChangeListener(this); + } + + public void addTab(ActionBar.Tab tab, Class<?> clss, Bundle args) { + TabInfo info = new TabInfo(clss, args); + tab.setTag(info); + tab.setTabListener(this); + mTabs.add(info); + mActionBar.addTab(tab); + notifyDataSetChanged(); + } + + @Override + public int getCount() { + return mTabs.size(); + } + + @Override + public Fragment getItem(int position) { + TabInfo info = mTabs.get(position); + return Fragment.instantiate(mContext, info.clss.getName(), info.args); + } + + @Override + public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) { + } + + @Override + public void onPageSelected(int position) { + mActionBar.setSelectedNavigationItem(position); + } + + @Override + public void onPageScrollStateChanged(int state) { + } + + @Override + public void onTabSelected(Tab tab, FragmentTransaction ft) { + Object tag = tab.getTag(); + for (int i=0; i<mTabs.size(); i++) { + if (mTabs.get(i) == tag) { + mViewPager.setCurrentItem(i); + } + } + } + + @Override + public void onTabUnselected(Tab tab, FragmentTransaction ft) { + } + + @Override + public void onTabReselected(Tab tab, FragmentTransaction ft) { + } + } +} +//END_INCLUDE(complete) diff --git a/samples/Support13Demos/src/com/example/android/supportv13/app/FragmentNestingStatePagerSupport.java b/samples/Support13Demos/src/com/example/android/supportv13/app/FragmentNestingStatePagerSupport.java new file mode 100644 index 000000000..58638528b --- /dev/null +++ b/samples/Support13Demos/src/com/example/android/supportv13/app/FragmentNestingStatePagerSupport.java @@ -0,0 +1,159 @@ +/* + * Copyright (C) 2012 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package com.example.android.supportv13.app; + +import java.util.ArrayList; + +import com.example.android.supportv13.R; + +import android.app.ActionBar; +import android.app.ActionBar.Tab; +import android.app.Activity; +import android.app.Fragment; +import android.app.FragmentTransaction; +import android.content.Context; +import android.os.Bundle; +import android.support.v13.app.FragmentStatePagerAdapter; +import android.support.v4.view.ViewPager; + +//BEGIN_INCLUDE(complete) +public class FragmentNestingStatePagerSupport extends Activity { + ViewPager mViewPager; + TabsAdapter mTabsAdapter; + + @Override + protected void onCreate(Bundle savedInstanceState) { + super.onCreate(savedInstanceState); + + mViewPager = new ViewPager(this); + mViewPager.setId(R.id.pager); + setContentView(mViewPager); + + final ActionBar bar = getActionBar(); + bar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS); + bar.setDisplayOptions(0, ActionBar.DISPLAY_SHOW_TITLE); + + mTabsAdapter = new TabsAdapter(this, mViewPager); + mTabsAdapter.addTab(bar.newTab().setText("Simple"), + CountingFragment.class, null); + mTabsAdapter.addTab(bar.newTab().setText("List"), + FragmentPagerSupport.ArrayListFragment.class, null); + mTabsAdapter.addTab(bar.newTab().setText("Cursor"), + CursorFragment.class, null); + mTabsAdapter.addTab(bar.newTab().setText("Tabs"), + FragmentTabsFragment.class, null); + + if (savedInstanceState != null) { + bar.setSelectedNavigationItem(savedInstanceState.getInt("tab", 0)); + } + } + + @Override + protected void onSaveInstanceState(Bundle outState) { + super.onSaveInstanceState(outState); + outState.putInt("tab", getActionBar().getSelectedNavigationIndex()); + } + + /** + * This is a helper class that implements the management of tabs and all + * details of connecting a ViewPager with associated TabHost. It relies on a + * trick. Normally a tab host has a simple API for supplying a View or + * Intent that each tab will show. This is not sufficient for switching + * between pages. So instead we make the content part of the tab host + * 0dp high (it is not shown) and the TabsAdapter supplies its own dummy + * view to show as the tab content. It listens to changes in tabs, and takes + * care of switch to the correct paged in the ViewPager whenever the selected + * tab changes. + */ + public static class TabsAdapter extends FragmentStatePagerAdapter + implements ActionBar.TabListener, ViewPager.OnPageChangeListener { + private final Context mContext; + private final ActionBar mActionBar; + private final ViewPager mViewPager; + private final ArrayList<TabInfo> mTabs = new ArrayList<TabInfo>(); + + static final class TabInfo { + private final Class<?> clss; + private final Bundle args; + + TabInfo(Class<?> _class, Bundle _args) { + clss = _class; + args = _args; + } + } + + public TabsAdapter(Activity activity, ViewPager pager) { + super(activity.getFragmentManager()); + mContext = activity; + mActionBar = activity.getActionBar(); + mViewPager = pager; + mViewPager.setAdapter(this); + mViewPager.setOnPageChangeListener(this); + } + + public void addTab(ActionBar.Tab tab, Class<?> clss, Bundle args) { + TabInfo info = new TabInfo(clss, args); + tab.setTag(info); + tab.setTabListener(this); + mTabs.add(info); + mActionBar.addTab(tab); + notifyDataSetChanged(); + } + + @Override + public int getCount() { + return mTabs.size(); + } + + @Override + public Fragment getItem(int position) { + TabInfo info = mTabs.get(position); + return Fragment.instantiate(mContext, info.clss.getName(), info.args); + } + + @Override + public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) { + } + + @Override + public void onPageSelected(int position) { + mActionBar.setSelectedNavigationItem(position); + } + + @Override + public void onPageScrollStateChanged(int state) { + } + + @Override + public void onTabSelected(Tab tab, FragmentTransaction ft) { + Object tag = tab.getTag(); + for (int i=0; i<mTabs.size(); i++) { + if (mTabs.get(i) == tag) { + mViewPager.setCurrentItem(i); + } + } + } + + @Override + public void onTabUnselected(Tab tab, FragmentTransaction ft) { + } + + @Override + public void onTabReselected(Tab tab, FragmentTransaction ft) { + } + } +} +//END_INCLUDE(complete) diff --git a/samples/Support13Demos/src/com/example/android/supportv13/app/FragmentTabsFragment.java b/samples/Support13Demos/src/com/example/android/supportv13/app/FragmentTabsFragment.java new file mode 100644 index 000000000..fbc464dda --- /dev/null +++ b/samples/Support13Demos/src/com/example/android/supportv13/app/FragmentTabsFragment.java @@ -0,0 +1,187 @@ +/* + * Copyright (C) 2012 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package com.example.android.supportv13.app; + +import java.util.HashMap; + +import com.example.android.supportv13.R; + +import android.app.Fragment; +import android.app.FragmentManager; +import android.app.FragmentTransaction; +import android.content.Context; +import android.os.Bundle; +import android.view.LayoutInflater; +import android.view.View; +import android.view.ViewGroup; +import android.widget.TabHost; + +public class FragmentTabsFragment extends Fragment { + TabHost mTabHost; + TabManager mTabManager; + String mCurrentTabTag; + + @Override + public View onCreateView(LayoutInflater inflater, ViewGroup container, + Bundle savedInstanceState) { + View v = inflater.inflate(R.layout.fragment_tabs_fragment, container, false); + mTabHost = (TabHost)v.findViewById(android.R.id.tabhost); + mTabHost.setup(); + + mTabManager = new TabManager(getActivity(), getChildFragmentManager(), + mTabHost, R.id.realtabcontent); + + mTabManager.addTab(mTabHost.newTabSpec("simple").setIndicator("Simple"), + CountingFragment.class, null); + mTabManager.addTab(mTabHost.newTabSpec("array").setIndicator("Array"), + FragmentPagerSupport.ArrayListFragment.class, null); + mTabManager.addTab(mTabHost.newTabSpec("cursor").setIndicator("Cursor"), + CursorFragment.class, null); + + return v; + } + + @Override + public void onViewStateRestored(Bundle savedInstanceState) { + super.onViewStateRestored(savedInstanceState); + if (savedInstanceState != null) { + mCurrentTabTag = savedInstanceState.getString("tab"); + } + mTabHost.setCurrentTabByTag(mCurrentTabTag); + } + + @Override + public void onDestroyView() { + super.onDestroyView(); + // Need to remember the selected tab so that we can restore it if + // we later re-create the views. + mCurrentTabTag = mTabHost.getCurrentTabTag(); + mTabHost = null; + mTabManager = null; + } + + @Override + public void onSaveInstanceState(Bundle outState) { + super.onSaveInstanceState(outState); + outState.putString("tab", mTabHost != null + ? mTabHost.getCurrentTabTag() : mCurrentTabTag); + } + + /** + * This is a helper class that implements a generic mechanism for + * associating fragments with the tabs in a tab host. It relies on a + * trick. Normally a tab host has a simple API for supplying a View or + * Intent that each tab will show. This is not sufficient for switching + * between fragments. So instead we make the content part of the tab host + * 0dp high (it is not shown) and the TabManager supplies its own dummy + * view to show as the tab content. It listens to changes in tabs, and takes + * care of switch to the correct fragment shown in a separate content area + * whenever the selected tab changes. + */ + public static class TabManager implements TabHost.OnTabChangeListener { + private final Context mContext; + private final FragmentManager mManager; + private final TabHost mTabHost; + private final int mContainerId; + private final HashMap<String, TabInfo> mTabs = new HashMap<String, TabInfo>(); + TabInfo mLastTab; + + static final class TabInfo { + private final String tag; + private final Class<?> clss; + private final Bundle args; + private Fragment fragment; + + TabInfo(String _tag, Class<?> _class, Bundle _args) { + tag = _tag; + clss = _class; + args = _args; + } + } + + static class DummyTabFactory implements TabHost.TabContentFactory { + private final Context mContext; + + public DummyTabFactory(Context context) { + mContext = context; + } + + @Override + public View createTabContent(String tag) { + View v = new View(mContext); + v.setMinimumWidth(0); + v.setMinimumHeight(0); + return v; + } + } + + public TabManager(Context context, FragmentManager manager, TabHost tabHost, + int containerId) { + mContext = context; + mManager = manager; + mTabHost = tabHost; + mContainerId = containerId; + mTabHost.setOnTabChangedListener(this); + } + + public void addTab(TabHost.TabSpec tabSpec, Class<?> clss, Bundle args) { + tabSpec.setContent(new DummyTabFactory(mContext)); + String tag = tabSpec.getTag(); + + TabInfo info = new TabInfo(tag, clss, args); + + // Check to see if we already have a fragment for this tab, probably + // from a previously saved state. If so, deactivate it, because our + // initial state is that a tab isn't shown. + info.fragment = mManager.findFragmentByTag(tag); + if (info.fragment != null && !info.fragment.isDetached()) { + FragmentTransaction ft = mManager.beginTransaction(); + ft.detach(info.fragment); + ft.commit(); + } + + mTabs.put(tag, info); + mTabHost.addTab(tabSpec); + } + + @Override + public void onTabChanged(String tabId) { + TabInfo newTab = mTabs.get(tabId); + if (mLastTab != newTab) { + FragmentTransaction ft = mManager.beginTransaction(); + if (mLastTab != null) { + if (mLastTab.fragment != null) { + ft.detach(mLastTab.fragment); + } + } + if (newTab != null) { + if (newTab.fragment == null) { + newTab.fragment = Fragment.instantiate(mContext, + newTab.clss.getName(), newTab.args); + ft.add(mContainerId, newTab.fragment, newTab.tag); + } else { + ft.attach(newTab.fragment); + } + } + + mLastTab = newTab; + ft.commit(); + mManager.executePendingTransactions(); + } + } + } +} +//END_INCLUDE(complete) |