ActionBarSherlock를 이용한 탭 내비게이션

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바로 아래 글에 이어 ActionBarSherlock를 이용한 탭 내비게이션 프로그램을 만들어보자.

탭을 3개로 했을 때 필요한 소스 파일은 총 5개.

• 메인 액티비티
• 탭 리스너
• 댑1 처리 소스
• 탭2 처리 소스
• 탭3 처리 소스
• 기타 리소스 파일

package com.spacesoft.myactionbartab;

import android.os.Bundle;
import android.widget.Toast;

import com.actionbarsherlock.app.ActionBar;
import com.actionbarsherlock.app.SherlockFragmentActivity;
import com.actionbarsherlock.view.Menu;
import com.actionbarsherlock.view.MenuItem;

public class MainActivity extends SherlockFragmentActivity  {
@Override
protected void onCreate(Bundle savedInstanceState) {
	setTheme(R.style.Theme_Sherlock); //Used for theme switching in samples
	super.onCreate(savedInstanceState);

	ActionBar actionBar = getSupportActionBar();
	actionBar.setTitle("ActionBar TAB");
	actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
	actionBar.addTab(actionBar
		.newTab()
		.setText("처음탭")
		.setTabListener(new TabListener<MyTab1>(this, "tab1",
		MyTab1.class)));
	actionBar.addTab(actionBar
		.newTab()
		.setText("탭2")
		.setTabListener(new TabListener<MyTab2>(this, "tab2",
		MyTab2.class)));
	actionBar.addTab(actionBar
		.newTab()
		.setText("3번탭")
		.setTabListener(new TabListener<MyTab3>(this, "tab3",
		MyTab3.class)));

	if (savedInstanceState != null) {
		actionBar.setSelectedNavigationItem(savedInstanceState.getInt(
		"selectedTab", 0));
	}
}

@Override
protected void onSaveInstanceState(Bundle outState) {
	super.onSaveInstanceState(outState);
	outState.putInt("selectedTab", getSupportActionBar()
		.getSelectedNavigationIndex());
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
//Used to put dark icons on light action bar

	menu.add("search")
		.setIcon(R.drawable.icon_search)
		.setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS);

	menu.add("Settings")
		.setIcon(R.drawable.icon_settings)
		.setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS);

	return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
	Toast.makeText(this, "Selected Item : " + item.getTitle(),
		Toast.LENGTH_SHORT).show();
	return true;
}
}

package com.spacesoft.myactionbartab;

import android.support.v4.app.FragmentTransaction;

import com.actionbarsherlock.app.ActionBar.Tab;
import com.actionbarsherlock.app.SherlockFragment;
import com.actionbarsherlock.app.SherlockFragmentActivity;

public class TabListener<T extends SherlockFragment>
implements com.actionbarsherlock.app.ActionBar.TabListener {
private final SherlockFragmentActivity mActivity;
private final String mTag;
private final Class<T> mClass;

private SherlockFragment mFragment;

public TabListener(SherlockFragmentActivity activity,
String tag, Class<T> clz) {
	mActivity = activity;
	mTag = tag;
	mClass = clz;
}

public void onTabSelected(Tab tab, FragmentTransaction ft) {
	SherlockFragment preInitializedFragment = (SherlockFragment)
	mActivity.getSupportFragmentManager().findFragmentByTag(mTag);
	if (preInitializedFragment == null) {
		mFragment = (SherlockFragment) SherlockFragment.instantiate(mActivity,
		mClass.getName());
		ft.add(android.R.id.content, mFragment, mTag);
	} else {
		ft.attach(preInitializedFragment);
	}
}

public void onTabUnselected(Tab tab, FragmentTransaction ft) {
	SherlockFragment preInitializedFragment = (SherlockFragment)
	mActivity.getSupportFragmentManager().findFragmentByTag(mTag);

	if (preInitializedFragment != null) {
		ft.detach(preInitializedFragment);
	} else if (mFragment != null) {
		ft.detach(mFragment);
	}
}

public void onTabReselected(Tab tab, FragmentTransaction ft) {
// User selected the already selected tab. Usually do nothing.
}
}

package com.spacesoft.myactionbartab;

import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import com.actionbarsherlock.app.SherlockFragment;

public class MyTab1 extends SherlockFragment {
	@Override
	public View onCreateView(LayoutInflater inflater, ViewGroup container,
		Bundle savedInstanceState) {
		View v = inflater.inflate(R.layout.simple, container, false);
		View tv = v.findViewById(R.id.text);
		((TextView) tv).setText("1번 탭이다.");

		return v;
	}
}

package com.spacesoft.myactionbartab;

import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import com.actionbarsherlock.app.SherlockFragment;

public class MyTab2 extends SherlockFragment {
	@Override
	public View onCreateView(LayoutInflater inflater, ViewGroup container,
		Bundle savedInstanceState) {
		View v = inflater.inflate(R.layout.simple, container, false);
		View tv = v.findViewById(R.id.text);
		((TextView) tv).setText("여기는 두 번째 탭");

		return v;
	}
}

package com.spacesoft.myactionbartab;

import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import com.actionbarsherlock.app.SherlockFragment;

public class MyTab3 extends SherlockFragment {
	@Override
	public View onCreateView(LayoutInflater inflater, ViewGroup container,
		Bundle savedInstanceState) {
		View v = inflater.inflate(R.layout.simple, container, false);
		View tv = v.findViewById(R.id.text);
		((TextView) tv).setText("tab3에 왔다.");

		return v;
	}
}

각 파일을 위와 같이 준비하고 필요한 리소스 파일(각 탭에 텍스트를 출력하기 위한 레이아웃 파일 – simple.xml – 과 아이콘 부분에 들어갈 아이콘으로 icon_search.png와 icon_settings.png가 필요하다)을 적당한 폴더에 넣고 실행하면 아래 화면과 같이 탭으로 구분된 실행화면이 나타난다.