안드로이드 개발 질문/답변
(글 수 45,052)
안녕하세요.
FragmentTab으로 개발을 해야 하는대요.
좀처럼 잘 되지 않네요 ㅠ
탭에 Fragment상속받은 클래스를 붙여서 첫번째 화면 띄우는 것 까지는 했는데..
그 이후 depth가 문제입니다..
FragmentStack 추가 메소드 넣어서 돌렸는대 작동이 되긴하는대 이상하게 되네요;;;;
api 데모 참조해서 Tab에 붙인 것 뿐인데 동작이 너무 틀립니다.
혹시 제가 잘못하고 있는 건지 확인해 주시면 감사하겠습니다.
그럼 이만..
UIFragmentTabActivity.java
package com.icecream.tab;
import java.util.HashMap;
import android.content.Context; import android.os.Bundle; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentActivity; import android.support.v4.app.FragmentTransaction; import android.view.View; import android.widget.TabHost;
public class UIFragmentTabActivity extends FragmentActivity {
TabHost mTabHost;
TabManager mTabManager;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState); setContentView(R.layout.fragment_tabs);
mTabHost = (TabHost)findViewById(android.R.id.tabhost);
mTabHost.setup();
mTabManager = new TabManager(this, mTabHost, R.id.realtabcontent);
mTabManager.addTab(mTabHost.newTabSpec("simple").setIndicator("Simple"),
SampleFragment.CountingFragment.class, null);
// mTabManager.addTab(mTabHost.newTabSpec("contacts").setIndicator("Contacts"),
// LoaderCursorSupport.CursorLoaderListFragment.class, null);
// mTabManager.addTab(mTabHost.newTabSpec("custom").setIndicator("Custom"),
// LoaderCustomSupport.AppListFragment.class, null);
// mTabManager.addTab(mTabHost.newTabSpec("throttle").setIndicator("Throttle"),
// LoaderThrottleSupport.ThrottledLoaderListFragment.class, null);
if (savedInstanceState != null) {
mTabHost.setCurrentTabByTag(savedInstanceState.getString("tab"));
}
}
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putString("tab", mTabHost.getCurrentTabTag());
}
/**
* 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 FragmentActivity mActivity;
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(FragmentActivity activity, TabHost tabHost, int containerId) {
mActivity = activity;
mTabHost = tabHost;
mContainerId = containerId;
mTabHost.setOnTabChangedListener(this);
} public void addTab(TabHost.TabSpec tabSpec, Class<?> clss, Bundle args) {
tabSpec.setContent(new DummyTabFactory(mActivity));
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 = mActivity.getSupportFragmentManager().findFragmentByTag(tag);
if (info.fragment != null && !info.fragment.isDetached()) {
FragmentTransaction ft = mActivity.getSupportFragmentManager().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 = mActivity.getSupportFragmentManager().beginTransaction();
if (mLastTab != null) {
if (mLastTab.fragment != null) {
ft.detach(mLastTab.fragment);
}
}
if (newTab != null) {
if (newTab.fragment == null) {
newTab.fragment = Fragment.instantiate(mActivity,
newTab.clss.getName(), newTab.args);
ft.add(mContainerId, newTab.fragment, newTab.tag);
} else {
ft.attach(newTab.fragment);
}
} mLastTab = newTab;
ft.commit();
mActivity.getSupportFragmentManager().executePendingTransactions();
}
}
}
}
SampleFragment.java
...
public static class CountingFragment extends Fragment {
int mNum; /**
* Create a new instance of CountingFragment, providing "num"
* as an argument.
*/
static CountingFragment newInstance(int num) {
CountingFragment f = new CountingFragment(); // Supply num input as an argument.
Bundle args = new Bundle();
args.putInt("num", num);
f.setArguments(args);return f; }
/**
* When creating, retrieve this instance's number from its arguments.
*/
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mNum = getArguments() != null ? getArguments().getInt("num") : 1;}
/**
* The Fragment's UI is just a simple text view showing its
* instance number.
*/
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.fragment_stack, container, false);
View tv = v.findViewById(R.id.textview1);
((TextView)tv).setText("Fragment #" + mNum);
tv.setBackgroundDrawable(getResources().getDrawable(android.R.drawable.gallery_thumb)); tv.setOnTouchListener(new OnTouchListener() { @Override
public boolean onTouch(View view, MotionEvent motionevent) {
//텍스트뷰 터치 시 stack 추가
addFragmentToStack();
return false;
}
}); return v;
}
void addFragmentToStack() {
mNum++;// Instantiate a new fragment. Fragment newFragment = CountingFragment.newInstance(mNum);
// Add the fragment to the activity, pushing this transaction // on to the back stack. FragmentTransaction ft = getFragmentManager().beginTransaction(); ft.replace(R.id.simple_fragment, newFragment); ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN); ft.addToBackStack(null); ft.commit(); } }