ViewPager与FragmentPagerAdapter实现Tab

来源：互联网发布：rxjava 源码编辑：程序博客网时间：2024/05/19 19:32

Fragment作为内容区域

界面可以左右拖动

top.xml

<?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="45dp"    android:background="@drawable/title_bar"    android:gravity="center"    android:orientation="vertical">    <TextView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_gravity="center"        android:text="WeChat"        android:textSize="20sp"        android:textStyle="bold"        android:textColor="#ffffffff"/></LinearLayout>

bottom.xml

<?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="65dp"    android:background="@drawable/bottom_bar"    android:orientation="horizontal">    <LinearLayout        android:id="@+id/id_tab_wechat"        android:layout_width="0dp"        android:layout_height="match_parent"        android:layout_weight="1"        android:orientation="vertical"        android:gravity="center">        <ImageButton            android:id="@+id/id_tab_wechat_image"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:clickable="false"            android:background="#00000000"            android:src="@drawable/tab_weixin_pressed" />        <TextView            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:textColor="#ffffff"            android:text="WeChat" />    </LinearLayout>    <LinearLayout        android:id="@+id/id_tab_friend"        android:layout_width="0dp"        android:layout_height="match_parent"        android:layout_weight="1"        android:orientation="vertical"        android:gravity="center">        <ImageButton            android:id="@+id/id_tab_friend_image"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:clickable="false"            android:background="#00000000"            android:src="@drawable/tab_find_frd_normal" />        <TextView            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:textColor="#ffffff"            android:text="Friend" />    </LinearLayout>    <LinearLayout        android:id="@+id/id_tab_address"        android:layout_width="0dp"        android:layout_height="match_parent"        android:layout_weight="1"        android:orientation="vertical"        android:gravity="center">        <ImageButton            android:id="@+id/id_tab_address_image"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:clickable="false"            android:background="#00000000"            android:src="@drawable/tab_address_normal" />        <TextView            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:textColor="#ffffff"            android:text="Address" />    </LinearLayout>    <LinearLayout        android:id="@+id/id_tab_settings"        android:layout_width="0dp"        android:layout_height="match_parent"        android:layout_weight="1"        android:orientation="vertical"        android:gravity="center">        <ImageButton            android:id="@+id/id_tab_settings_image"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:clickable="false"            android:background="#00000000"            android:src="@drawable/tab_settings_normal" />        <TextView            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:textColor="#ffffff"            android:text="Settings" />    </LinearLayout></LinearLayout>

activity_main.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:app="http://schemas.android.com/apk/res-auto"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical">    <include layout="@layout/top" />    <android.support.v4.view.ViewPager        android:id="@+id/id_viewpager"        android:layout_width="match_parent"        android:layout_height="0dp"        android:layout_weight="1">    </android.support.v4.view.ViewPager>    <include layout="@layout/bottom" /></LinearLayout>

WeChatFragment

FriendFragment

AddressFragment

SettingsFragment

public class WeChatFragment extends Fragment {    @Nullable    @Override    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {        return inflater.inflate(R.layout.tab01, container, false);    }}

MainActivity

public class MainActivity extends FragmentActivity implements View.OnClickListener {    private ViewPager mViewPager;    private FragmentPagerAdapter mAdapter;    private List<Fragment> mFragments;    private LinearLayout mTabWeChat;    private LinearLayout mTabFriend;    private LinearLayout mTabAddress;    private LinearLayout mTabSettings;    private ImageButton mImgWeChat;    private ImageButton mImgFriend;    private ImageButton mImgAddress;    private ImageButton mImgSettings;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        requestWindowFeature(Window.FEATURE_NO_TITLE);        setContentView(R.layout.activity_main);        initView();        initEvents();        setSelect(1);    }    private void initEvents() {        mTabWeChat.setOnClickListener(this);        mTabFriend.setOnClickListener(this);        mTabAddress.setOnClickListener(this);        mTabSettings.setOnClickListener(this);    }    private void initView() {        mViewPager = (ViewPager) findViewById(R.id.id_viewpager);        mTabWeChat = (LinearLayout) findViewById(R.id.id_tab_wechat);        mTabFriend = (LinearLayout) findViewById(R.id.id_tab_friend);        mTabAddress = (LinearLayout) findViewById(R.id.id_tab_address);        mTabSettings = (LinearLayout) findViewById(R.id.id_tab_settings);        mImgWeChat = (ImageButton) findViewById(R.id.id_tab_wechat_image);        mImgFriend = (ImageButton) findViewById(R.id.id_tab_friend_image);        mImgAddress = (ImageButton) findViewById(R.id.id_tab_address_image);        mImgSettings = (ImageButton) findViewById(R.id.id_tab_settings_image);        mFragments = new ArrayList<Fragment>();        Fragment mTab01 = new WeChatFragment();        Fragment mTab02 = new FriendFragment();        Fragment mTab03 = new AddressFragment();        Fragment mTab04 = new SettingsFragment();        mFragments.add(mTab01);        mFragments.add(mTab02);        mFragments.add(mTab03);        mFragments.add(mTab04);        mAdapter = new FragmentPagerAdapter(getSupportFragmentManager()) {            @Override            public Fragment getItem(int position) {                return mFragments.get(position);            }            @Override            public int getCount() {                return mFragments.size();            }        };        mViewPager.setAdapter(mAdapter);        mViewPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {            @Override            public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {            }            @Override            public void onPageSelected(int position) {                int currentItem = mViewPager.getCurrentItem();                setTab(currentItem);            }            @Override            public void onPageScrollStateChanged(int state) {            }        });    }    @Override    public void onClick(View v) {//        resetImgs();        switch (v.getId()) {            case R.id.id_tab_wechat:                setSelect(0);                break;            case R.id.id_tab_friend:                setSelect(1);                break;            case R.id.id_tab_address:                setSelect(2);                break;            case R.id.id_tab_settings:                setSelect(3);                break;        }    }    private void setSelect(int i) {        setTab(i);        mViewPager.setCurrentItem(i);    }    private void setTab(int i ) {        resetImgs();        //设置图片为亮色        //切换内容区域        switch (i) {            case 0:                mImgWeChat.setImageResource(R.drawable.tab_weixin_pressed);                break;            case 1:                mImgFriend.setImageResource(R.drawable.tab_find_frd_pressed);                break;            case 2:                mImgAddress.setImageResource(R.drawable.tab_address_pressed);                break;            case 3:                mImgSettings.setImageResource(R.drawable.tab_settings_pressed);                break;        }    }    /**     * 切换图片至暗色     */    private void resetImgs() {        mImgWeChat.setImageResource(R.drawable.tab_weixin_normal);        mImgFriend.setImageResource(R.drawable.tab_find_frd_normal);        mImgAddress.setImageResource(R.drawable.tab_address_normal);        mImgSettings.setImageResource(R.drawable.tab_settings_normal);    }}

https://github.com/LiuchangDuan/demo/tree/master/fragmentpageradapterdemo

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