3种方式实现可滑动的Tab

1. 第一种，使用 TabHost + ViewPager 实现

该方法会有一个Bug，当设置tabHost.setCurrentTab()为0时，ViewPager不显示（准确的说是加载），只有点击其他任意一个tab后才会加载。

有解的同学吼一声~~~~~~~

3种方式实现可滑动的Tab-LMLPHP

Activity:

package com.swordy.demo.android.fragment;

import java.util.Random;

import android.os.Bundle;

import android.support.v4.app.Fragment;

import android.support.v4.app.FragmentActivity;

import android.support.v4.app.FragmentManager;

import android.support.v4.app.FragmentStatePagerAdapter;

import android.support.v4.view.PagerAdapter;

import android.support.v4.view.ViewPager;

import android.support.v4.view.ViewPager.OnPageChangeListener;

import android.view.LayoutInflater;

import android.view.View;

import android.view.View.OnClickListener;

import android.view.ViewGroup;

import android.widget.TabHost;

import android.widget.TabHost.OnTabChangeListener;

import android.widget.TabWidget;

import android.widget.TextView;

import com.swordy.demo.android.R;

import com.swordy.library.android.util.ELog;

/**

 * 1. 使用TabHost和ViewPager组合实现一个可以滑动的tab

 * 2. bug：如果当前页为0，则ViewPager第一次不加载。

 *

 * @author swordy

 * @email mryangjian@live.com

 * @since Jan 20, 2014

 * @version 1.0

 */

public class SlideTabs1 extends FragmentActivity

{

    private static final String TAG = "AndroidDemos.SlideTabs1";

    private TabHost mTabHost;

    private ViewPager mViewPager;

    private PagerAdapter mPagerAdapter;

    private String[] addresses = { "first", "second", "third" };

    @Override

    protected void onCreate(Bundle arg0)

    {

        super.onCreate(arg0);

        setContentView(R.layout.fragment_slidetabs1);

        mViewPager = (ViewPager) findViewById(R.id.viewPager1);

        mPagerAdapter = new MyPagerAdapter(getSupportFragmentManager());

        mViewPager.setAdapter(mPagerAdapter);

        mTabHost = (TabHost) findViewById(android.R.id.tabhost);

        mTabHost.setup();

        mTabHost.addTab(mTabHost.newTabSpec("one").setIndicator("one-1")

                .setContent(R.id.viewPager1));

        mTabHost.addTab(mTabHost.newTabSpec("two").setIndicator("two-2")

                .setContent(R.id.viewPager1));

        mTabHost.addTab(mTabHost.newTabSpec("three").setIndicator("three-3")

                .setContent(R.id.viewPager1));

        TabWidget tabWidget = mTabHost.getTabWidget();

        int count = tabWidget.getChildCount();

        for (int i = 0; i != count; i++)

        {

            final int index = i;

            tabWidget.getChildAt(i).setOnClickListener(new OnClickListener() {

                @Override

                public void onClick(View v)

                {

                    mTabHost.setCurrentTab(index);

                    mViewPager.setCurrentItem(index);

                }

            });

        }

        mTabHost.setOnTabChangedListener(new OnTabChangeListener() {

            @Override

            public void onTabChanged(String tabId)

            {

                ELog.i(TAG, "@--> onTabChanged by tabId: " + tabId);

            }

        });

        mViewPager.setOnPageChangeListener(new OnPageChangeListener() {

            @Override

            public void onPageSelected(int arg0)

            {

                ELog.i(TAG, "@--> onPageSelected: " + arg0);

                mTabHost.setCurrentTab(arg0);

            }

            @Override

            public void onPageScrolled(int arg0, float arg1, int arg2)

            {

            }

            @Override

            public void onPageScrollStateChanged(int arg0)

            {

            }

        });

    }

    private class MyPagerAdapter extends FragmentStatePagerAdapter

    {

        public MyPagerAdapter(FragmentManager fm)

        {

            super(fm);

        }

        @Override

        public Fragment getItem(int position)

        {

            ELog.i(TAG, "@--> getItem by position" + position);

            ELog.i(TAG, "@--> getItem by position" + position);

            return MyFragment.create(addresses[position]);

        }

        @Override

        public int getCount()

        {

            return addresses.length;

        }

    }

    public static class MyFragment extends Fragment

    {

        public static MyFragment create(String address)

        {

            ELog.i(TAG, "@--> MyFragment.create()");

            MyFragment f = new MyFragment();

            Bundle b = new Bundle();

            b.putString("address", address);

            f.setArguments(b);

            return f;

        }

        @Override

        public View onCreateView(LayoutInflater inflater, ViewGroup container,

                Bundle savedInstanceState)

        {

            Random r = new Random(System.currentTimeMillis());

            Bundle b = getArguments();

            View v = inflater.inflate(R.layout.fragment_viewpager1_layout1, null);

            v.setBackgroundColor(r.nextInt() >> 8 | 0xFF << 24);

            TextView txvAddress = (TextView) v.findViewById(R.id.textView1);

            txvAddress.setTextColor(r.nextInt() >> 8 | 0xFF << 24);

            txvAddress.setBackgroundColor(r.nextInt() >> 8 | 0xFF << 24);

            txvAddress.setText(b.getString("address", ""));

            return v;

        }

    }

}

布局：

<?xml version="1.0" encoding="utf-8"?>

<TabHost xmlns:android="http://schemas.android.com/apk/res/android"

    android:id="@android:id/tabhost"

    android:layout_width="match_parent"

    android:layout_height="match_parent" >

    <LinearLayout

        android:layout_width="match_parent"

        android:layout_height="match_parent"

        android:orientation="vertical" >

        <TabWidget

            android:id="@android:id/tabs"

            android:layout_width="match_parent"

            android:layout_height="wrap_content"

            android:gravity="right|center_vertical" />

        <FrameLayout

            android:id="@android:id/tabcontent"

            android:layout_width="match_parent"

            android:layout_height="match_parent" >

            <android.support.v4.view.ViewPager

                android:id="@+id/viewPager1"

                android:layout_width="match_parent"

                android:layout_height="match_parent" />

        </FrameLayout>

    </LinearLayout>

</TabHost>

2. 第二种，使用官方提供的方法 ActionBar + ViewPager 实现

原文地址：http://developer.android.com/training/implementing-navigation/lateral.html

该方法有两个缺陷，或者说不是缺陷，只是我没有找到解决的办法。

第一，tab点上不是很灵敏，可能就是这么设定的，为了防止频繁加载吧，但是体验稍稍不爽；

第二，ActionBar在最顶部，如果我的布局是：顶部一个带返回按钮的标题栏，中间是tab，底部是tabcontent，怎么搞？

3种方式实现可滑动的Tab-LMLPHP

Activity：

package com.swordy.demo.android.fragment;

import java.util.Random;

import android.app.ActionBar;

import android.app.ActionBar.Tab;

import android.app.ActionBar.TabListener;

import android.os.Bundle;

import android.support.v4.app.Fragment;

import android.support.v4.app.FragmentActivity;

import android.support.v4.app.FragmentManager;

import android.support.v4.app.FragmentPagerAdapter;

import android.support.v4.view.ViewPager;

import android.support.v4.view.ViewPager.OnPageChangeListener;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.TextView;

import com.swordy.demo.android.R;

/**

 * 1. 使用ActionBar和ViewPager实现可以滑动的Tab

 *

 * @author swordy

 * @email mryangjian@live.com

 * @since Jan 20, 2014

 * @version 1.0

 */

public class SlideTabs2 extends FragmentActivity

{

    private static final String TAG = "AndroidDemos.SlideTabs2";

    private ViewPager mViewPager;

    private ActionBar mActionBar;

    private MyPagerAdapter mPagerAdapter;

    private String[] addresses = { "first", "second", "third" };

    private Tab[] mTabs = new Tab[addresses.length];

    @Override

    protected void onCreate(Bundle savedInstanceState)

    {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.fragment_viewpager1);

        mViewPager = (ViewPager) findViewById(R.id.viewPager1);

        mPagerAdapter = new MyPagerAdapter(getSupportFragmentManager());

        mViewPager.setAdapter(mPagerAdapter);

        mViewPager.setOnPageChangeListener(mPageChangeListener);

        mActionBar = getActionBar();

        mActionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);

        mActionBar.setDisplayShowTitleEnabled(false);

        mActionBar.setDisplayShowHomeEnabled(false);

        for (int i = 0; i != addresses.length; i++)

        {

            mTabs[i] = mActionBar.newTab().setText(addresses[i]).setTabListener(mTabListener);

            mActionBar.addTab(mTabs[i]);

        }

    }

    private OnPageChangeListener mPageChangeListener = new OnPageChangeListener() {

        @Override

        public void onPageSelected(int arg0)

        {

            mActionBar.setSelectedNavigationItem(arg0);

        }

        @Override

        public void onPageScrolled(int arg0, float arg1, int arg2)

        {

        }

        @Override

        public void onPageScrollStateChanged(int arg0)

        {

        }

    };

    private TabListener mTabListener = new TabListener() {

        @Override

        public void onTabSelected(Tab tab, android.app.FragmentTransaction ft)

        {

            if (tab == mTabs[0])

            {

                mViewPager.setCurrentItem(0);

            } else if (tab == mTabs[1])

            {

                mViewPager.setCurrentItem(1);

            } else if (tab == mTabs[2])

            {

                mViewPager.setCurrentItem(2);

            }

        }

        @Override

        public void onTabUnselected(Tab tab, android.app.FragmentTransaction ft)

        {

            // TODO Auto-generated method stub

        }

        @Override

        public void onTabReselected(Tab tab, android.app.FragmentTransaction ft)

        {

            // TODO Auto-generated method stub

        }

    };

    public class MyPagerAdapter extends FragmentPagerAdapter

    {

        public MyPagerAdapter(FragmentManager fm)

        {

            super(fm);

        }

        @Override

        public Fragment getItem(int position)

        {

            return MyFragment.create(addresses[position]);

        }

        @Override

        public int getCount()

        {

            return addresses.length;

        }

    }

    public static class MyFragment extends Fragment

    {

        public static MyFragment create(String address)

        {

            MyFragment f = new MyFragment();

            Bundle b = new Bundle();

            b.putString("address", address);

            f.setArguments(b);

            return f;

        }

        @Override

        public View onCreateView(LayoutInflater inflater, ViewGroup container,

                Bundle savedInstanceState)

        {

            Random r = new Random(System.currentTimeMillis());

            Bundle b = getArguments();

            View v = inflater.inflate(R.layout.fragment_viewpager1_layout1, null);

            v.setBackgroundColor(r.nextInt() >> 8 | 0xFF << 24);

            TextView txvAddress = (TextView) v.findViewById(R.id.textView1);

            txvAddress.setTextColor(r.nextInt() >> 8 | 0xFF << 24);

            txvAddress.setBackgroundColor(r.nextInt() >> 8 | 0xFF << 24);

            txvAddress.setText(b.getString("address", ""));

            return v;

        }

    }

}

布局：

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical" >

    <android.support.v4.view.ViewPager

        android:id="@+id/viewPager1"

        android:layout_width="match_parent"

        android:layout_height="match_parent" />

</LinearLayout>

3. 【推荐】第三种，使用 TabWidget + ViewPager 实现

该方法不错，推荐使用。

3种方式实现可滑动的Tab-LMLPHP

Activity：

package com.swordy.demo.android.fragment;

import java.util.Random;

import android.os.Bundle;

import android.support.v4.app.Fragment;

import android.support.v4.app.FragmentActivity;

import android.support.v4.app.FragmentManager;

import android.support.v4.app.FragmentStatePagerAdapter;

import android.support.v4.view.PagerAdapter;

import android.support.v4.view.ViewPager;

import android.support.v4.view.ViewPager.OnPageChangeListener;

import android.view.LayoutInflater;

import android.view.View;

import android.view.View.OnClickListener;

import android.view.ViewGroup;

import android.widget.Button;

import android.widget.TabWidget;

import android.widget.TextView;

import com.swordy.demo.android.R;

/**

 * 1. 使用TabWidget和ViewPager实现可滑动的Tab

 *

 * @author swordy

 * @email mryangjian@live.com

 * @since Jan 20, 2014

 * @version 1.0

 */

public class SlideTabs3 extends FragmentActivity

{

    private static final String TAG = "AndroidDemos.SlideTabs3";

    private ViewPager mViewPager;

    private PagerAdapter mPagerAdapter;

    private TabWidget mTabWidget;

    private String[] addresses = { "first", "second", "third" };

    private Button[] mBtnTabs = new Button[addresses.length];

    @Override

    protected void onCreate(Bundle savedInstanceState)

    {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.fragment_slidetabs3);

        mTabWidget = (TabWidget) findViewById(R.id.tabWidget1);

        mTabWidget.setStripEnabled(false);

        mBtnTabs[0] = new Button(this);

        mBtnTabs[0].setFocusable(true);

        mBtnTabs[0].setText(addresses[0]);

        mBtnTabs[0].setTextColor(getResources().getColorStateList(R.color.button_bg_color_selector));

        mTabWidget.addView(mBtnTabs[0]);

        /*

         * Listener必须在mTabWidget.addView()之后再加入，用于覆盖默认的Listener，

         * mTabWidget.addView()中默认的Listener没有NullPointer检测。

         */

        mBtnTabs[0].setOnClickListener(mTabClickListener);

        mBtnTabs[1] = new Button(this);

        mBtnTabs[1].setFocusable(true);

        mBtnTabs[1].setText(addresses[1]);

        mBtnTabs[1].setTextColor(getResources().getColorStateList(R.color.button_bg_color_selector));

        mTabWidget.addView(mBtnTabs[1]);

        mBtnTabs[1].setOnClickListener(mTabClickListener);

        mBtnTabs[2] = new Button(this);

        mBtnTabs[2].setFocusable(true);

        mBtnTabs[2].setText(addresses[2]);

        mBtnTabs[2].setTextColor(getResources().getColorStateList(R.color.button_bg_color_selector));

        mTabWidget.addView(mBtnTabs[2]);

        mBtnTabs[2].setOnClickListener(mTabClickListener);

        mViewPager = (ViewPager) findViewById(R.id.viewPager1);

        mPagerAdapter = new MyPagerAdapter(getSupportFragmentManager());

        mViewPager.setAdapter(mPagerAdapter);

        mViewPager.setOnPageChangeListener(mPageChangeListener);

        mTabWidget.setCurrentTab(0);

    }

    private OnClickListener mTabClickListener = new OnClickListener() {

        @Override

        public void onClick(View v)

        {

            if (v == mBtnTabs[0])

            {

                mViewPager.setCurrentItem(0);

            } else if (v == mBtnTabs[1])

            {

                mViewPager.setCurrentItem(1);

            } else if (v == mBtnTabs[2])

            {

                mViewPager.setCurrentItem(2);

            }

        }

    };

    private OnPageChangeListener mPageChangeListener = new OnPageChangeListener() {

        @Override

        public void onPageSelected(int arg0)

        {

            mTabWidget.setCurrentTab(arg0);

        }

        @Override

        public void onPageScrolled(int arg0, float arg1, int arg2)

        {

        }

        @Override

        public void onPageScrollStateChanged(int arg0)

        {

        }

    };

    private class MyPagerAdapter extends FragmentStatePagerAdapter

    {

        public MyPagerAdapter(FragmentManager fm)

        {

            super(fm);

        }

        @Override

        public Fragment getItem(int position)

        {

            return MyFragment.create(addresses[position]);

        }

        @Override

        public int getCount()

        {

            return addresses.length;

        }

    }

    public static class MyFragment extends Fragment

    {

        public static MyFragment create(String address)

        {

            MyFragment f = new MyFragment();

            Bundle b = new Bundle();

            b.putString("address", address);

            f.setArguments(b);

            return f;

        }

        @Override

        public View onCreateView(LayoutInflater inflater, ViewGroup container,

                Bundle savedInstanceState)

        {

            Random r = new Random(System.currentTimeMillis());

            Bundle b = getArguments();

            View v = inflater.inflate(R.layout.fragment_viewpager1_layout1, null);

            v.setBackgroundColor(r.nextInt() >> 8 | 0xFF << 24);

            TextView txvAddress = (TextView) v.findViewById(R.id.textView1);

            txvAddress.setTextColor(r.nextInt() >> 8 | 0xFF << 24);

            txvAddress.setBackgroundColor(r.nextInt() >> 8 | 0xFF << 24);

            txvAddress.setText(b.getString("address", ""));

            return v;

        }

    }

}

布局：

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical" >

    <TabWidget

        android:id="@+id/tabWidget1"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:gravity="right|center_vertical" />

    <android.support.v4.view.ViewPager

        android:id="@+id/viewPager1"

        android:layout_width="match_parent"

        android:layout_height="match_parent" />

</LinearLayout>

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