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TabActivity 및 fragments 및 viewPager와 같은 탭을 구현하는 일반적인 방법으로 일주일 동안 고생하고 나면 활동 또는 탭 조각을 얻지 못하고 문제를 해결할 방법을 찾지 못했습니다. 그래서 저는 그것을 다른 방식으로 구현하기로 결정했습니다. 먼저 간단한 버튼으로 tabWidget을 만든다. 안드로이드 개발자 웹 사이트에서 나는 런타임에 fragment를 대체 할 방법을 찾는다. 그래서 유일한 단점은 탭 조각에 접근하여 FragmentActivity에서 메소드를 호출하는 것입니다.간단한보기 및 단편으로 탭을 구현하는 방법
여기는 pageViewer를 사용한 나의 FragmentActivity입니다.
public class MainActivity extends FragmentActivity implements
OnTabChangeListener, OnPageChangeListener {
private TabHost mTabHost;
private ViewPager mViewPager;
private HashMap<String, TabInfo> mapTabInfo = new HashMap<String, MainActivity.TabInfo>();
private PagerAdapter mPagerAdapter;
private TabInfo mLastTab = null;
private class TabInfo {
private String tag;
private Class clss;
private Bundle args;
private Fragment fragment;
TabInfo(String tag, Class clazz, Bundle args) {
this.tag = tag;
this.clss = clazz;
this.args = args;
}
}
class TabFactory implements TabContentFactory {
private final Context mContext;
/**
* @param context
*/
public TabFactory(Context context) {
mContext = context;
}
/**
* (non-Javadoc)
*
* @see android.widget.TabHost.TabContentFactory#createTabContent(java.lang.String)
*/
public View createTabContent(String tag) {
View v = new View(mContext);
v.setMinimumWidth(0);
v.setMinimumHeight(0);
return v;
}
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
Log.d("checking", "setup tabs...");
setContentView(R.layout.activity_main);
// //
initialiseTabHost(savedInstanceState);
if (savedInstanceState != null) {
mTabHost.setCurrentTabByTag(savedInstanceState.getString("tab"));
}
intialiseViewPager();
// //
setup();
// ///
}
protected void onSaveInstanceState(Bundle outState) {
outState.putString("tab", mTabHost.getCurrentTabTag()); // save the tab
// selected
super.onSaveInstanceState(outState);
}
private void intialiseViewPager() {
List<Fragment> fragments = new Vector<Fragment>();
fragments
.add(Fragment.instantiate(this, CoachFragment.class.getName()));
fragments
.add(Fragment.instantiate(this, LogingFragment.class.getName()));
fragments.add(Fragment.instantiate(this,
HistoryFragment.class.getName()));
this.mPagerAdapter = new PagerAdapter(
super.getSupportFragmentManager(), fragments);
//
this.mViewPager = (ViewPager) super.findViewById(R.id.viewpager);
this.mViewPager.setAdapter(this.mPagerAdapter);
this.mViewPager.setOnPageChangeListener(this);
mViewPager.setOffscreenPageLimit(1000000);
}
private void initialiseTabHost(Bundle args) {
mTabHost = (TabHost) findViewById(android.R.id.tabhost);
mTabHost.setup();
mTabHost.getTabWidget().setDividerDrawable(R.drawable.tab_divider);
TabInfo tabInfo = null;
View tabView1 = createTabView(this, coach");
MainActivity.AddTab(this, this.mTabHost, this.mTabHost
.newTabSpec("Tab1").setIndicator(tabView1),
(tabInfo = new TabInfo("Tab1", CoachFragment.class, args)));
this.mapTabInfo.put(tabInfo.tag, tabInfo);
View tabView2 = createTabView(this, logbook");
MainActivity.AddTab(this, this.mTabHost, this.mTabHost
.newTabSpec("Tab2").setIndicator(tabView2),
(tabInfo = new TabInfo("Tab2", LogingFragment.class, args)));
this.mapTabInfo.put(tabInfo.tag, tabInfo);
View tabView3 = createTabView(this, "history");
MainActivity.AddTab(this, this.mTabHost, this.mTabHost
.newTabSpec("Tab3").setIndicator(tabView3),
(tabInfo = new TabInfo("Tab3", HistoryFragment.class, args)));
this.mapTabInfo.put(tabInfo.tag, tabInfo);
mTabHost.setOnTabChangedListener(this);
}
private static void AddTab(MainActivity activity, TabHost tabHost,
TabHost.TabSpec tabSpec, TabInfo tabInfo) {
// Attach a Tab view factory to the spec
tabSpec.setContent(activity.new TabFactory(activity));
tabHost.addTab(tabSpec);
}
public void setup() {
....
CoachFragment fragment=(CoachFragment) mPagerAdapter.getRegisteredFragment(mViewPager.getCurrentItem());
fragment.setTempView(R.id.welcome);
fragment.animate();
....
}
public void onTabChanged(String tag) {
// TabInfo newTab = this.mapTabInfo.get(tag);
int pos = this.mTabHost.getCurrentTab();
this.mViewPager.setCurrentItem(pos);
}
private static View createTabView(final Context context, final String text) {
View view = LayoutInflater.from(context)
.inflate(R.layout.tabs_bg, null);
TextView tv = (TextView) view.findViewById(R.id.tabsText);
tv.setText(text);
return view;
}
@Override
public void onPageScrollStateChanged(int arg0) {
// TODO Auto-generated method stub
}
@Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
// TODO Auto-generated method stub
}
@Override
public void onPageSelected(int position) {
// TODO Auto-generated method stub
this.mTabHost.setCurrentTab(position);
}
}
내 pageAdapter :
public class PagerAdapter extends FragmentPagerAdapter {
private List<Fragment> fragments;
private HashMap<Integer, Fragment> registeredFragments=new HashMap<Integer, Fragment>();
/**
* @param fm
* @param fragments
*/
public PagerAdapter(FragmentManager fm, List<Fragment> fragments) {
super(fm);
this.fragments = fragments;
}
/* (non-Javadoc)
* @see android.support.v4.app.FragmentPagerAdapter#getItem(int)
*/
@Override
public Fragment getItem(int position) {
return this.fragments.get(position);
}
@Override
public Object instantiateItem(ViewGroup container, int position) {
Fragment fragment = (Fragment) super.instantiateItem(container, position);
registeredFragments.put(position, fragment);
return fragment;
}
@Override
public void destroyItem(ViewGroup container, int position, Object object) {
registeredFragments.remove(position);
super.destroyItem(container, position, object);
}
public Fragment getRegisteredFragment(int position) {
return registeredFragments.get(position);
}
/* (non-Javadoc)
* @see android.support.v4.view.PagerAdapter#getCount()
*/
@Override
public int getCount() {
return this.fragments.size();
}
}
내 LogingFragment을 내가 setup() 방법에 내 탭의 조각 객체를 취득 할 때 나는 nullpointer를 얻을. 다른 2 개 조각은 동일 하나 :
public class LogingFragment extends Fragment{
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
if (container == null) {
// We have different layouts, and in one of them this
// fragment's containing frame doesn't exist. The fragment
// may still be created from its saved state, but there is
// no reason to try to create its view hierarchy because it
// won't be displayed. Note this is not needed -- we could
// just run the code below, where we would create and return
// the view hierarchy; it would just never be used.
return null;
}
return (LinearLayout)inflater.inflate(R.layout.coach_activity, container, false);
}
}
모든 것을 완벽하게 작동하고 모든보고 스 와이프는 잘하지만 설정에서 작동() 메소드 나는 nullPointer를 얻을. 그걸로 나를 도와주세요.
는
API 레벨 10을 사용하고 있으므로 ActionBar 탭을 사용할 수 없다고 생각합니다. –
그런 경우에는 액션 바 셜록 사용을 진지하게 고려해보십시오. – IanB
@Mohamad Ghadourian ^^ 예, 깜빡했습니다. 액션 바 셜록은 낮은 API 레벨을위한 액션 바를 지원합니다. – scottyseus