Radio+不可滑动的viewpager实现底部导航栏

首先来看一下效果图：

MainActivity.xml

下面是不可滑动的viewpager（注释部分也可以实现这个效果）

import android.content.Context;
import android.support.v4.view.ViewPager;
import android.util.AttributeSet;
import android.view.MotionEvent;

/**
 * Created by ch on 2017/2/7.
 */
public class NoScrollViewPager extends ViewPager {
  private boolean canloop = false;

    public NoScrollViewPager(Context context) {
        super(context);
    }
    public NoScrollViewPager(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    //去除滚动效果
    @Override
    public void setCurrentItem(int item, boolean smoothScroll) {
        super.setCurrentItem(item, smoothScroll);
    }

    @Override
    public void setCurrentItem(int item) {
        super.setCurrentItem(item, false);
    }

    //禁止滚动
    @Override
    public boolean onInterceptTouchEvent(MotionEvent ev) {
        if (canloop) {//如果可以滚动，不消费事件，继续往下传事件
            return super.onInterceptTouchEvent(ev);
        } else {//如果不可以滚动，事件传给上级的onTouchEvent
            return false;
        }
    }

    @Override
    public boolean onTouchEvent(MotionEvent ev) {
        if (canloop) {//如果可以滚动，不消费事件，往下传
            return super.onTouchEvent(ev);
        } else {//如果不可以滚动，事件传给上级的onTouchEvent
            return false;
        }
    }
    /*    public NoScrollViewPager(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    @Override
    public boolean onTouchEvent(MotionEvent ev) {

        return false;
    }
    //去除滚动效果
    @Override
    public void setCurrentItem(int item, boolean smoothScroll) {
        super.setCurrentItem(item, false);
    }
    @Override
    public boolean onInterceptTouchEvent(MotionEvent ev) {

            return false;

    }*/
}

public class TabPageAdapter extends FragmentPagerAdapter{

    private List fragments;
    public TabPageAdapter(FragmentManager fm,List fragments) {
        super(fm);
        this.fragments = fragments;
    }

    @Override
    public Fragment getItem(int position) {
        return fragments.get(position);
    }

    @Override
    public int getCount() {
        return fragments.size();
    }

    
    @Override
    public void destroyItem(ViewGroup container, int position, Object object) {

    }
}

 MainActivity

import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.RadioGroup.OnCheckedChangeListener;

import com.lt.bottomtabdemo.adapter.TabPageAdapter;
import com.lt.bottomtabdemo.fragment.ClassifyFragment;
import com.lt.bottomtabdemo.fragment.DiscoverFragment;
import com.lt.bottomtabdemo.fragment.HomeFragment;
import com.lt.bottomtabdemo.fragment.MeFragment;
import com.lt.bottomtabdemo.fragment.tab2Fragment;
import com.lt.bottomtabdemo.view.NoScrollViewPager;

import java.util.ArrayList;
import java.util.List;

public class MainActivity extends FragmentActivity implements
         OnCheckedChangeListener {
    private NoScrollViewPager mViewPager;
    private RadioGroup mRadioGroup;

    /**
     * ��ť��ûѡ����ʾ��ͼ��
     */
    private int[] unselectedIconIds = {R.drawable.ic_tab_home_gray,
            R.drawable.ic_tab_classify_gray, R.drawable.ic_tab_discover_gray,
            R.drawable.ic_tab_me_gray, R.drawable.ic_tab_classify_gray};
    /**
     * ��ť��ѡ����ʾ��ͼ��
     */
    private int[] selectedIconIds = {R.drawable.ic_tab_home_yellow,
            R.drawable.ic_tab_classify_yellow, R.drawable.ic_tab_discover_yellow,
            R.drawable.ic_tab_me_yellow, R.drawable.ic_tab_me_yellow};

    private List fragments = new ArrayList();

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        init();
        initView();
        selectPage(0); // Ĭ��ѡ����ҳ
    }

    protected void init() {
        Fragment homeFragment = new HomeFragment();
        Fragment classifyFragment = new ClassifyFragment();
        Fragment discoverFragment = new DiscoverFragment();
        Fragment meFragment = new MeFragment();
        Fragment tab2Fragment = new tab2Fragment();
        fragments.add(homeFragment);
        fragments.add(classifyFragment);
        fragments.add(discoverFragment);
        fragments.add(meFragment);
        fragments.add(tab2Fragment);
    }

    private void initView() {
        mRadioGroup = (RadioGroup) findViewById(R.id.radioGroup);
        mViewPager = (NoScrollViewPager) findViewById(R.id.viewPager);
        mViewPager.setHorizontalScrollBarEnabled(true);
        mRadioGroup.setOnCheckedChangeListener(this);
        TabPageAdapter tabPageAdapter = new TabPageAdapter(
                getSupportFragmentManager(), fragments);
        mViewPager.setAdapter(tabPageAdapter);
     //  mViewPager.setOnPageChangeListener(this);
    }


    /**
     * ѡ��ijҳ
     *
     * @param position ҳ���λ��
     */
    private void selectPage(int position) {
        // �����е�tab��icon��ɻ�ɫ��
        for (int i = 0; i < mRadioGroup.getChildCount(); i++) {
            Drawable gray = getResources().getDrawable(unselectedIconIds[i]);
            gray.setBounds(0, 0, gray.getMinimumWidth(),
                    gray.getMinimumHeight());
            RadioButton child = (RadioButton) mRadioGroup.getChildAt(i);
            child.setCompoundDrawables(null, gray, null, null);
            child.setTextColor(getResources().getColor(
                    R.color.dark_gray));
        }
        // �л�ҳ��
        mViewPager.setCurrentItem(position, false);
        // �ı�ͼ��
        Drawable yellow = getResources().getDrawable(selectedIconIds[position]);
        yellow.setBounds(0, 0, yellow.getMinimumWidth(),
                yellow.getMinimumHeight());
        RadioButton select = (RadioButton) mRadioGroup.getChildAt(position);
        select.setCompoundDrawables(null, yellow, null, null);
        select.setTextColor(getResources().getColor(
                R.color.yellow));
}

 /*   @Override
    public void onPageScrolled(int position, float positionOffset,
                               int positionOffsetPixels) {

    }

    @Override
    public void onPageSelected(int position) {
      *//*  selectPage(position);*//*
    }

    @Override
    public void onPageScrollStateChanged(int state) {

    }
*/
    @Override
    public void onCheckedChanged(RadioGroup group, int checkedId) {
        switch (checkedId) {
            case R.id.btn_home: // ��ҳѡ��
                selectPage(0);
                break;
            case R.id.btn_classify: // ����ѡ��
                selectPage(1);
                break;
            case R.id.btn_discover: // ����ѡ��
                selectPage(2);
                break;
            case R.id.btn_me: // ��������ѡ��
                selectPage(3);
                break;
            case R.id.btn_me2: // ��������ѡ��
                selectPage(4);
                break;
        }
    }

}

下面就是其中的一个fragment的例子

public class DiscoverFragment extends Fragment{

   @Override
   public View onCreateView(LayoutInflater inflater, ViewGroup container,
         Bundle savedInstanceState) {
      TextView textView = new TextView(getActivity());
      LayoutParams params = new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
      textView.setGravity(Gravity.CENTER);
      textView.setLayoutParams(params);
      textView.setText("表单");
      return textView;
   }
}

也可以自己写一个fragment

public abstract class BaseFragment extends Fragment {

    boolean isImmersive = false;
    boolean isTranslucentNavigation = false;
       /*
       * 1.onCreateView是创建的时候调用，onViewCreated是onCreateView后被触发的事件,前后关系
       * */
    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        View view = inflater.inflate(getContentViewId(), container, false);
        return view;

}

    @Override
    public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);

    }

    @Override
    public void onActivityCreated(@Nullable Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        initData();

    }

    @Override
    public void onDestroyView() {
        super.onDestroyView();

    }



    public static boolean hasKitKat() {
        return Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;
    }

    public static boolean hasLollipop() {
        return Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP;
    }

    public boolean isTranslucentNavigation() {
        return isTranslucentNavigation;
    }

    public void setTranslucentNavigation(boolean translucentNavigation) {
        isTranslucentNavigation = translucentNavigation;
    }
    //沉浸式状态栏结束

    public abstract int getContentViewId();

    protected abstract void initData();

    public abstract void TitleBar(boolean isImmersive);

}

然后写一个fragment继承BaseFragment

当获取id时，使用getView（）.就行了

大致的应该就是这些，如果缺少东西，欢迎大家提意见