Introducing the PagerAdapter for swipable tabs
This commit is contained in:
Carlos Galindo
parent
2e472b83f9
commit
f96ace7d3b
5 changed files with 270 additions and 2 deletions
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@ -9,7 +9,14 @@
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android:theme="@style/AppTheme" >
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<activity
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android:name=".ShowPlayer"
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android:label="@string/app_name"
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android:parentActivityName=".Welcome" >
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<meta-data
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android:name="android.support.PARENT_ACTIVITY"
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android:value=".Welcome" />
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</activity>
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<activity
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android:name=".TabsViewPagerFragmentActivity"
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android:parentActivityName=".Welcome">
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<meta-data
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android:name="android.support.PARENT_ACTIVITY"
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@ -28,6 +35,7 @@
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android:label="@string/app_name" >
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<intent-filter>
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<action android:name="android.intent.action.MAIN" />
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<category android:name="android.intent.category.LAUNCHER" />
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</intent-filter>
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</activity>
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@ -0,0 +1,40 @@
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package com.kauron.dungeonmanager;
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import android.support.v4.app.Fragment;
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import android.support.v4.app.FragmentManager;
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import android.support.v4.app.FragmentPagerAdapter;
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import java.util.List;
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/**
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* The <code>PagerAdapter</code> serves the fragments when paging.
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* @author mwho
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*/
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public class PagerAdapter extends FragmentPagerAdapter {
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private List<Fragment> fragments;
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/**
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* @param fm
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* @param fragments
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*/
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public PagerAdapter(FragmentManager fm, List<Fragment> fragments) {
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super(fm);
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this.fragments = fragments;
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}
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/* (non-Javadoc)
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* @see android.support.v4.app.FragmentPagerAdapter#getItem(int)
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*/
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@Override
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public Fragment getItem(int position) {
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return this.fragments.get(position);
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}
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/* (non-Javadoc)
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* @see android.support.v4.view.PagerAdapter#getCount()
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*/
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@Override
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public int getCount() {
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return this.fragments.size();
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}
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}
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@ -0,0 +1,176 @@
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package com.kauron.dungeonmanager;
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import android.content.Context;
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import android.os.Bundle;
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import android.support.v4.app.Fragment;
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import android.support.v4.app.FragmentActivity;
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import android.support.v4.view.ViewPager;
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import android.view.View;
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import android.widget.TabHost;
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import android.widget.TabHost.TabContentFactory;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Vector;
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/**
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* The <code>TabsViewPagerFragmentActivity</code> class implements the Fragment activity that maintains a TabHost using a ViewPager.
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* @author mwho
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*/
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public class TabsViewPagerFragmentActivity extends FragmentActivity implements TabHost.OnTabChangeListener, ViewPager.OnPageChangeListener {
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private TabHost mTabHost;
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private ViewPager mViewPager;
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private HashMap<String, TabInfo> mapTabInfo = new HashMap<String, TabsViewPagerFragmentActivity.TabInfo>();
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private PagerAdapter mPagerAdapter;
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/**
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*
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* @author mwho
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* Maintains extrinsic info of a tab's construct
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*/
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private class TabInfo {
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private String tag;
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private Class<?> clss;
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private Bundle args;
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private Fragment fragment;
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TabInfo(String tag, Class<?> clazz, Bundle args) {
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this.tag = tag;
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this.clss = clazz;
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this.args = args;
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}
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}
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/**
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* A simple factory that returns dummy views to the Tabhost
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* @author mwho
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*/
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class TabFactory implements TabContentFactory {
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private final Context mContext;
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/**
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* @param context
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*/
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public TabFactory(Context context) {
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mContext = context;
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}
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/** (non-Javadoc)
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* @see android.widget.TabHost.TabContentFactory#createTabContent(java.lang.String)
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*/
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public View createTabContent(String tag) {
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View v = new View(mContext);
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v.setMinimumWidth(0);
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v.setMinimumHeight(0);
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return v;
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}
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}
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/** (non-Javadoc)
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* @see android.support.v4.app.FragmentActivity#onCreate(android.os.Bundle)
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*/
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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// Inflate the layout
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setContentView(R.layout.tabs_viewpager_layout);
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// Initialise the TabHost
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this.initialiseTabHost(savedInstanceState);
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if (savedInstanceState != null) {
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mTabHost.setCurrentTabByTag(savedInstanceState.getString("tab")); //set the tab as per the saved state
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}
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// Intialise ViewPager
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this.intialiseViewPager();
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}
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/** (non-Javadoc)
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* @see android.support.v4.app.FragmentActivity#onSaveInstanceState(android.os.Bundle)
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*/
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protected void onSaveInstanceState(Bundle outState) {
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outState.putString("tab", mTabHost.getCurrentTabTag()); //save the tab selected
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super.onSaveInstanceState(outState);
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}
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/**
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* Initialise ViewPager
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*/
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private void intialiseViewPager() {
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List<Fragment> fragments = new Vector<>();
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fragments.add(Fragment.instantiate(this, ShowPlayer.class.getName()));
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fragments.add(Fragment.instantiate(this, PowerEditor.class.getName()));
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fragments.add(Fragment.instantiate(this, PlayerEditor.class.getName()));
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this.mPagerAdapter = new PagerAdapter(super.getSupportFragmentManager(), fragments);
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//
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this.mViewPager = (ViewPager)super.findViewById(R.id.viewpager);
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this.mViewPager.setAdapter(this.mPagerAdapter);
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this.mViewPager.setOnPageChangeListener(this);
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}
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/**
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* Initialise the Tab Host
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*/
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private void initialiseTabHost(Bundle args) {
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mTabHost = (TabHost)findViewById(android.R.id.tabhost);
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mTabHost.setup();
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TabInfo tabInfo = null;
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TabsViewPagerFragmentActivity.AddTab(this, this.mTabHost, this.mTabHost.newTabSpec("Tab1").setIndicator("Tab 1"), ( tabInfo = new TabInfo("Tab1", ShowPlayer.class, args)));
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this.mapTabInfo.put(tabInfo.tag, tabInfo);
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TabsViewPagerFragmentActivity.AddTab(this, this.mTabHost, this.mTabHost.newTabSpec("Tab2").setIndicator("Tab 2"), ( tabInfo = new TabInfo("Tab2", PowerEditor.class, args)));
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this.mapTabInfo.put(tabInfo.tag, tabInfo);
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TabsViewPagerFragmentActivity.AddTab(this, this.mTabHost, this.mTabHost.newTabSpec("Tab3").setIndicator("Tab 3"), ( tabInfo = new TabInfo("Tab3", PlayerEditor.class, args)));
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this.mapTabInfo.put(tabInfo.tag, tabInfo);
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// Default to first tab
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//this.onTabChanged("Tab1");
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//
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mTabHost.setOnTabChangedListener(this);
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}
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/**
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* Add Tab content to the Tabhost
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* @param activity
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* @param tabHost
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* @param tabSpec
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*/
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private static void AddTab(TabsViewPagerFragmentActivity activity, TabHost tabHost, TabHost.TabSpec tabSpec, TabInfo tabInfo) {
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// Attach a Tab view factory to the spec
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tabSpec.setContent(activity.new TabFactory(activity));
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tabHost.addTab(tabSpec);
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}
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/** (non-Javadoc)
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* @see android.widget.TabHost.OnTabChangeListener#onTabChanged(java.lang.String)
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*/
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public void onTabChanged(String tag) {
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//TabInfo newTab = this.mapTabInfo.get(tag);
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int pos = this.mTabHost.getCurrentTab();
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this.mViewPager.setCurrentItem(pos);
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}
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/* (non-Javadoc)
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* @see android.support.v4.view.ViewPager.OnPageChangeListener#onPageScrolled(int, float, int)
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*/
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@Override
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public void onPageScrolled(int position, float positionOffset,
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int positionOffsetPixels) {
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// TODO Auto-generated method stub
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}
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/* (non-Javadoc)
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* @see android.support.v4.view.ViewPager.OnPageChangeListener#onPageSelected(int)
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*/
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@Override
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public void onPageSelected(int position) {
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// TODO Auto-generated method stub
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this.mTabHost.setCurrentTab(position);
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}
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/* (non-Javadoc)
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* @see android.support.v4.view.ViewPager.OnPageChangeListener#onPageScrollStateChanged(int)
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*/
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@Override
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public void onPageScrollStateChanged(int state) {
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// TODO Auto-generated method stub
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}
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}
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35
app/src/main/res/layout/tabs_viewpager_layout.xml
Normal file
35
app/src/main/res/layout/tabs_viewpager_layout.xml
Normal file
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@ -0,0 +1,35 @@
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<?xml version="1.0" encoding="utf-8"?>
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<LinearLayout
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xmlns:android="http://schemas.android.com/apk/res/android"
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android:orientation="vertical"
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android:layout_width="fill_parent"
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android:layout_height="fill_parent">
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<TabHost
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android:id="@android:id/tabhost"
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android:layout_width="fill_parent"
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android:layout_height="fill_parent">
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<LinearLayout
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android:orientation="vertical"
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android:layout_width="fill_parent"
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android:layout_height="fill_parent">
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<TabWidget
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android:id="@android:id/tabs"
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android:orientation="horizontal"
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android:layout_width="fill_parent"
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android:layout_height="wrap_content"
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android:layout_weight="0" />
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<FrameLayout
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android:id="@android:id/tabcontent"
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android:layout_width="0dp"
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android:layout_height="0dp"
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android:layout_weight="0"/>
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<android.support.v4.view.ViewPager
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android:id="@+id/viewpager"
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android:layout_width="fill_parent"
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android:layout_height="0dp"
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android:layout_weight="1" />
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</LinearLayout>
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</TabHost>
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</LinearLayout>
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@ -191,5 +191,14 @@
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<string name="use">Use</string>
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<string name="no_powers">There are no powers, try creating one</string>
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<string name="show_stats">Show attack/defense</string>
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<string name="title_activity_display">Display</string>
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<string name="title_section1">Section 1</string>
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<string name="title_section2">Section 2</string>
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<string name="title_section3">Section 3</string>
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<string name="hello_world">Hello world!</string>
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<string name="action_settings">Settings</string>
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</resources>
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