Android 는 Fragment 를 이용 하여 Tab 옵션 효과 구현
RadioGroup 과 Fragment 를 집합 하여 tab 옵션 효 과 를 실현 합 니 다.이 중 가장 중요 한 파일 은 다음 과 같 습 니 다.
1.Fragment TabAdapter 클래스:
/**
*@Description:
*@Author:Nate Robinson
*@Since:2015-2-12
*/
public class FragmentTabAdapter implements RadioGroup.OnCheckedChangeListener
{
private List<Fragment> fragments; // tab Fragment
private RadioGroup rgs; // tab
private Activity activity; // Fragment Activity
private int fragmentContentId; // Activity id
private int currentTab; // Tab
private OnRgsExtraCheckedChangedListener onRgsExtraCheckedChangedListener; // tab
public FragmentTabAdapter(Activity activity, List<Fragment> fragments, int fragmentContentId, RadioGroup rgs)
{
this.fragments = fragments;
this.rgs = rgs;
this.activity = activity;
this.fragmentContentId = fragmentContentId;
//
android.app.FragmentTransaction ft = activity.getFragmentManager().beginTransaction();
ft.add(fragmentContentId, fragments.get(0));
ft.commit();
rgs.setOnCheckedChangeListener(this);
}
@Override
public void onCheckedChanged(RadioGroup radioGroup, int checkedId)
{
for(int i = 0; i < rgs.getChildCount(); i++)
{
if(rgs.getChildAt(i).getId() == (checkedId))
{
Fragment fragment = fragments.get(i);
FragmentTransaction ft = activity.getFragmentManager().beginTransaction();
getCurrentFragment().onPause(); // tab
// getCurrentFragment().onStop(); // tab
if(fragment.isAdded())
{
// fragment.onStart(); // tab onStart()
fragment.onResume(); // tab onResume()
}
else
{
ft.add(fragmentContentId, fragment);
}
showTab(i); // tab
ft.commit();
// tab
if(null != onRgsExtraCheckedChangedListener)
{
onRgsExtraCheckedChangedListener.OnRgsExtraCheckedChanged(radioGroup, checkedId, i);
}
}
}
}
/**
* tab
* @param idx
*/
private void showTab(int idx)
{
for(int i = 0; i < fragments.size(); i++)
{
Fragment fragment = fragments.get(i);
FragmentTransaction ft = activity.getFragmentManager().beginTransaction();
if(idx == i)
{
ft.show(fragment);
}
else
{
ft.hide(fragment);
}
ft.commit();
}
currentTab = idx; // tab tab
}
public int getCurrentTab()
{
return currentTab;
}
public Fragment getCurrentFragment()
{
return fragments.get(currentTab);
}
public OnRgsExtraCheckedChangedListener getOnRgsExtraCheckedChangedListener()
{
return onRgsExtraCheckedChangedListener;
}
public void setOnRgsExtraCheckedChangedListener(OnRgsExtraCheckedChangedListener onRgsExtraCheckedChangedListener)
{
this.onRgsExtraCheckedChangedListener = onRgsExtraCheckedChangedListener;
}
/**
* tab
*/
public interface OnRgsExtraCheckedChangedListener
{
void OnRgsExtraCheckedChanged(RadioGroup radioGroup, int checkedId, int index);
}
}
<?xml version="1.0" encoding="UTF-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="@android:color/white"
android:orientation="vertical" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<FrameLayout
android:id="@+id/tab_content"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="1.0"
android:background="#77557799" />
<RadioGroup
android:id="@+id/tabs_rg"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:orientation="horizontal"
android:paddingBottom="7dp"
android:paddingTop="7dp" >
<RadioButton
android:id="@+id/tab_rb_a"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1.0"
android:background="@drawable/selector_tab"
android:button="@null"
android:checked="true"
android:drawableTop="@drawable/tablatestalert"
android:gravity="center"
android:singleLine="true"
android:text="Tab1"
android:textColor="#000000"
android:textSize="13sp" />
<RadioButton
android:id="@+id/tab_rb_b"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1.0"
android:background="@drawable/selector_tab"
android:button="@null"
android:drawableTop="@drawable/tabsearch"
android:gravity="center"
android:singleLine="true"
android:text="Tab2"
android:textColor="#000000"
android:textSize="13sp" />
<RadioButton
android:id="@+id/tab_rb_c"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1.0"
android:background="@drawable/selector_tab"
android:button="@null"
android:drawableTop="@drawable/tabrecommd"
android:gravity="center"
android:singleLine="true"
android:text="Tab3"
android:textColor="#000000"
android:textSize="13sp" />
</RadioGroup>
</LinearLayout>
</LinearLayout>
/**
*@Description:
*@Author:Nate Robinson
*@Since:2015-2-12
*/
public class MainActivity extends Activity
{
private RadioGroup rgs;
private List<Fragment> fragments = new ArrayList<Fragment>();
private int index;
private static Boolean isExit = false;
private static Boolean hasTask = false;
private RadioButton button;
private Timer tExit = new Timer();
private TimerTask task = new TimerTask()
{
@Override
public void run()
{
isExit = false;
hasTask = true;
}
};
private FragmentTabAdapter tabAdapter;
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
fragments.add(new FragmentOne());
fragments.add(new FragmentTwo());
fragments.add(new FragmentThree());
rgs = (RadioGroup) findViewById(R.id.tabs_rg);
button = (RadioButton) findViewById(R.id.tab_rb_a);
tabAdapter = new FragmentTabAdapter(this, fragments, R.id.tab_content, rgs);
tabAdapter.setOnRgsExtraCheckedChangedListener(new FragmentTabAdapter.OnRgsExtraCheckedChangedListener()
{
@Override
public void OnRgsExtraCheckedChanged(RadioGroup radioGroup, int checkedId, int index)
{
// index ， ， Fragment
System.out.println("Extra---- " + index + " checked!!! ");
MainActivity.this.index = index;
}
});
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event)
{
if(keyCode == KeyEvent.KEYCODE_BACK)
{
if(index == 0)
{
if(isExit == false)
{
isExit = true;
Toast.makeText(MainActivity.this, " ", Toast.LENGTH_SHORT).show();
if(!hasTask)
{
tExit.schedule(task, 1000);
}
}
else
{
finish();
System.exit(0);
}
}
else
{
// ， Fragment
// check onCheckedChanged
// rgs.check(button.getId());
button.setChecked(true);
}
}
return false;
}
}
/**
*@Description:
*@Author:Nate Robinson
*@Since:2015-2-12
*/
public class FragmentOne extends BaseFragment
{
private View view;
@Override
public void onAttach(Activity activity)
{
super.onAttach(activity);
Log.d(TAG, "1==>FragmentOne=>onAttach");
}
@Override
public void onCreate(Bundle savedInstanceState)
{
Log.d(TAG, "2==>FragmentOne==>onCreate");
super.onCreate(savedInstanceState);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
Log.d(TAG, "3==>FragmentOne==>onCreateView");
view = inflater.inflate(R.layout.fragment1, container, false);
TextView tv = (TextView) view.findViewById(R.id.tv);
tv.setText("FragmentOne");
return view;
}
@Override
public void onActivityCreated(Bundle savedInstanceState)
{
Log.d(TAG, "4==>FragmentOne==>onActivityCreated");
super.onActivityCreated(savedInstanceState);
}
@Override
public void onStart()
{
Log.d(TAG, "5==>FragmentOne==>onStart");
super.onStart();
}
@Override
public void onResume()
{
Log.d(TAG, "6==>FragmentOne==>onResume");
super.onResume();
}
@Override
public void onPause()
{
Log.d(TAG, "7==>FragmentOne==>onPause");
super.onPause();
}
@Override
public void onStop()
{
Log.d(TAG, "8==>FragmentOne==>onStop");
super.onStop();
}
@Override
public void onDestroyView()
{
Log.d(TAG, "9==>FragmentOne==>onDestroyView");
super.onDestroyView();
}
@Override
public void onDestroy()
{
Log.d(TAG, "10==>FragmentOne==>onDestroy");
super.onDestroy();
}
@Override
public void onDetach()
{
Log.d(TAG, "11==>FragmentOne==>onDetach");
super.onDetach();
}
@Override
public void onViewCreated(View view, Bundle savedInstanceState)
{
Log.d(TAG, "FragmentOne==>onViewCreated");
super.onViewCreated(view, savedInstanceState);
}
}
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