ActionBar實現Tab導航

  利用actionbar一樣也能夠輕鬆的實現tab導航的效果，配合使用fragment實現切換不一樣view的功能。

若想使用這個功能，1）設置actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS)，使actionbar使用tab導航功能。2）調用actionbar的addTab()方法，添加多個tab標籤，併爲每一個tab標籤添加時間監聽器。

MyFragment.java

package com.app.main;

import android.annotation.SuppressLint;
import android.app.Fragment;
import android.content.Context;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.widget.TextView;

@SuppressLint("NewApi")
public class MyFragment extends Fragment {

	@Override
	public View onCreateView(LayoutInflater inflater, ViewGroup container,
			Bundle savedInstanceState) {

		Context context = this.getActivity();

		TextView tv = new TextView(context);

		Bundle arc = this.getArguments();

		int tabs=arc.getInt("key");
		
		tv.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,
				LayoutParams.WRAP_CONTENT));

		tv.setText("hello actionbar "+tabs);

		return tv;

	}

}

main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".Main" >

    <LinearLayout
        android:id="@+id/container"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical" />

</RelativeLayout>

Main.java

package com.app.main;

import android.app.ActionBar;
import android.app.ActionBar.Tab;
import android.app.Activity;
import android.app.FragmentTransaction;
import android.os.Bundle;

public class Main extends Activity implements ActionBar.TabListener {

	ActionBar actionBar = null;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);

		actionBar = this.getActionBar();

		actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);

		actionBar.addTab(actionBar.newTab().setText("tab1")
				.setTabListener(this));

		actionBar.addTab(actionBar.newTab().setText("tab2")
				.setTabListener(this));

		actionBar.addTab(actionBar.newTab().setText("tab3")
				.setTabListener(this));

	}

	@Override
	public void onTabReselected(Tab tab, FragmentTransaction ft) {

	}

	@Override
	public void onTabSelected(Tab tab, FragmentTransaction ft) {

		MyFragment frag = new MyFragment();

		int index = tab.getPosition() + 1;

		Bundle bundle = new Bundle();

		bundle.putInt("key", index);

		frag.setArguments(bundle);

		FragmentTransaction action = Main.this.getFragmentManager()
				.beginTransaction();

		action.replace(R.id.container, frag);

		action.commit();

	}

	@Override
	public void onTabUnselected(Tab tab, FragmentTransaction ft) {

	}

}

實現效果：