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Android實現底部狀態欄切換

UsherChen / 1053人閱讀

摘要:開發過程中,特別是新開的項目,底部狀態欄的切換使用的頻率非常的高,主要的實現方式有這里我先介紹前面兩種實現方式,后面兩種后期再貼出實現方式。代碼地址底部公眾號回復底部狀態欄切換即可獲取。

Android開發過程中,特別是新開的項目,底部狀態欄的切換使用的頻率非常的高,主要的實現方式有:

    (1)、TabLayout + Fragment
    (2)、FragmentTabHost + Fragment
    (3)、BottomNavigationView + Fragment
    (4)、RidioGroup + Fragment

這里我先介紹前面兩種實現方式,后面兩種后期再貼出實現方式。

一、使用TabLayout + Fragment + ViewPager實現

1、實現步驟:

    (1)、布局文件中定義TabLayout控件
    (2)、定義切換的每個Fragment布局文件
    (3)、定義切換的每個Fragment的Java類
    (4)、定義TabLayoutMainActivity類
    (5)、效果圖演示

2、實現過程:

(1)、布局文件中定義TabLayout控件(activity_main.xml)




    

    


(2)、定義切換的每個Fragment布局文件(fragment_frist.xml)

這里有四個Tab類別(首頁、娛樂、游戲、我的),布局都類似,這里只貼出其中一個




    

(3)、定義切換的每個Fragment的Java類(FristFragment.class)

這里的Java 類實現方式也相似,貼出其中一個

package com.showly.bottomnavigationbardemo.fragment;

import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import com.showly.bottomnavigationbardemo.R;

public class FristFragment extends Fragment {

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

        View view = inflater.inflate(R.layout.fragment_frist, null);
        return view;
    }
}

(4)、定義TabLayoutMainActivity類(TabLayoutMainActivity.class)

package com.showly.bottomnavigationbardemo;


import android.os.Bundle;
import android.support.design.widget.TabLayout;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;

import com.showly.bottomnavigationbardemo.fragment.FourthlyFragment;
import com.showly.bottomnavigationbardemo.fragment.FristFragment;
import com.showly.bottomnavigationbardemo.fragment.SecondFragment;
import com.showly.bottomnavigationbardemo.fragment.ThirtlyFragment;

public class TabLayoutMainActivity extends AppCompatActivity {

    //未選中的Tab圖片
    private int[] unSelectTabRes = new int[]{R.drawable.i8live_menu_home_normal
            , R.drawable.i8live_menu_information_normal, R.drawable.i8live_menu_game_normal, R.drawable.i8live_menu_personl_normal};
    //選中的Tab圖片
    private int[] selectTabRes = new int[]{R.drawable.i8live_menu_home_press, R.drawable.i8live_menu_information_press
            , R.drawable.i8live_menu_game_press, R.drawable.i8live_menu_personl_press};
    //Tab標題
    private String[] title = new String[]{"首頁", "娛樂", "游戲", "我的"};
    private ViewPager viewPager;
    private TabLayout tabLayout;
    private TabLayout.Tab tabAtOne;
    private TabLayout.Tab tabAttwo;
    private TabLayout.Tab tabAtthree;
    private TabLayout.Tab tabAtfour;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        getSupportActionBar().hide();//隱藏掉整個ActionBar
        setContentView(R.layout.activity_main);

        initView();
        initData();
        initListener();
    }

    private void initView() {
        viewPager = (ViewPager) findViewById(R.id.viewpager_content_view);
        tabLayout = (TabLayout) findViewById(R.id.tab_layout_view);

        //使用適配器將ViewPager與Fragment綁定在一起
        viewPager.setAdapter(new MyFragmentPagerAdapter(getSupportFragmentManager()));
        //將TabLayout與ViewPager綁定
        tabLayout.setupWithViewPager(viewPager);

      /*  //設置方式一:
        //獲取底部的單個Tab
        tabAtOne = tabLayout.getTabAt(0);
        tabAttwo = tabLayout.getTabAt(1);
        tabAtthree = tabLayout.getTabAt(2);
        tabAtfour = tabLayout.getTabAt(3);

        //設置Tab圖片
        tabAtOne.setIcon(R.drawable.i8live_menu_home_press);
        tabAttwo.setIcon(R.drawable.i8live_menu_information_normal);
        tabAtthree.setIcon(R.drawable.i8live_menu_game_normal);
        tabAtfour.setIcon(R.drawable.i8live_menu_personl_normal);*/

        //設置方式二:
        for (int i = 0; i < title.length; i++) {
            if (i == 0) {
                tabLayout.getTabAt(0).setIcon(selectTabRes[0]);
            } else {
                tabLayout.getTabAt(i).setIcon(unSelectTabRes[i]);
            }
        }

    }

    private void initData() {

    }

    private void initListener() {
        //TabLayout切換時導航欄圖片處理
        tabLayout.addOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {
            @Override
            public void onTabSelected(TabLayout.Tab tab) {//選中圖片操作

                for (int i = 0; i < title.length; i++) {
                    if (tab == tabLayout.getTabAt(i)) {
                        tabLayout.getTabAt(i).setIcon(selectTabRes[i]);
                        viewPager.setCurrentItem(i);
                    }
                }

            }

            @Override
            public void onTabUnselected(TabLayout.Tab tab) {//未選中圖片操作

                for (int i = 0; i < title.length; i++) {
                    if (tab == tabLayout.getTabAt(i)) {
                        tabLayout.getTabAt(i).setIcon(unSelectTabRes[i]);
                    }
                }

            }

            @Override
            public void onTabReselected(TabLayout.Tab tab) {

            }
        });
    }

    //自定義適配器
    public class MyFragmentPagerAdapter extends FragmentPagerAdapter {

        public MyFragmentPagerAdapter(FragmentManager fm) {
            super(fm);
        }

        @Override
        public Fragment getItem(int position) {
            if (position == 1) {
                return new SecondFragment();//娛樂
            } else if (position == 2) {
                return new ThirtlyFragment();//游戲
            } else if (position == 3) {
                return new FourthlyFragment();//我的
            }
            return new FristFragment();//首頁
        }

        @Override
        public int getCount() {
            return title.length;
        }

        @Override
        public CharSequence getPageTitle(int position) {
            return title[position];
        }
    }
}

(5)、效果圖演示

二、使用FragmentTabHost+ Fragment + ViewPager實現

1、實現步驟:

    (1)、布局文件中定義FragmentTabHost控件
    (2)、定義底部菜單欄布局
    (3)、定義切換的每個Fragment布局文件
    (4)、定義切換的每個Fragment的Java類
    (5)、切換按鈕的圖片
    (6)、定義FragmentTabHostMainActivity類
    (7)、效果圖演示

2、實現過程:

(1)、布局文件中定義FragmentTabHost控件(fragment_tabhost_activity.xml)




    

    

        
    

(2)、定義底部菜單欄布局(tab_content.xml)




    

    

(3)、定義切換的每個Fragment布局文件(fragment_frist.xml)
這里有四個Tab類別(首頁、娛樂、游戲、我的),布局都類似,這里只貼出其中一個




    

(4)、定義切換的每個Fragment的Java類(FristFragment.class)

這里的Java 類實現方式也相似,貼出其中一個

package com.showly.bottomnavigationbardemo.fragment;


import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import com.showly.bottomnavigationbardemo.R;

public class FristFragment extends Fragment {

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

        View view = inflater.inflate(R.layout.fragment_frist, null);
        return view;
    }
}

(5)、切換按鈕的圖片(tab_main.xml)
這里有四個是相似的,只貼出其中一個



   
    
    
    

(6)、定義FragmentTabHostMainActivity類(FragmentTabHostMainActivity.class)

package com.showly.bottomnavigationbardemo;

import android.graphics.Color;
import android.os.Bundle;
import android.support.annotation.Nullable;
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.app.FragmentTabHost;
import android.support.v4.view.ViewPager;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TabHost;
import android.widget.TabWidget;
import android.widget.TextView;

import com.showly.bottomnavigationbardemo.fragment.FourthlyFragment;
import com.showly.bottomnavigationbardemo.fragment.FristFragment;
import com.showly.bottomnavigationbardemo.fragment.SecondFragment;
import com.showly.bottomnavigationbardemo.fragment.ThirtlyFragment;

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


public class FragmentTabHostMainActivity extends FragmentActivity implements ViewPager.OnPageChangeListener, TabHost.OnTabChangeListener {

    private int[] selectTabRes = new int[]{R.drawable.tab_main, R.drawable.tab_infomation
            , R.drawable.tab_game, R.drawable.tab_personal};
    //Tab標題
    private String[] title = new String[]{"首頁", "娛樂", "游戲", "我的"};
    private Class fragmentArry[] = {FristFragment.class, SecondFragment.class, ThirtlyFragment.class, FourthlyFragment.class};
    private List fragmentList = new ArrayList();

    private ViewPager viewPager;
    private FragmentTabHost tabHost;

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

        initView();
        initData();
        initListener();
    }

    /**
     * 初始化Fragment并給ViewPager添加適配器
     */
    private void initVaper() {
        FristFragment fristFragment = new FristFragment();
        SecondFragment secondFragment = new SecondFragment();
        ThirtlyFragment thirtlyFragment = new ThirtlyFragment();
        FourthlyFragment fourthlyFragment = new FourthlyFragment();

        fragmentList.add(fristFragment);
        fragmentList.add(secondFragment);
        fragmentList.add(thirtlyFragment);
        fragmentList.add(fourthlyFragment);

        //ViewPager添加適配器
        viewPager.setAdapter(new MyFragmentAdapter(getSupportFragmentManager(), fragmentList));
        tabHost.getTabWidget().setDividerDrawable(null);
    }

    private void initView() {
        viewPager = (ViewPager) findViewById(R.id.vp_pager);

        tabHost = (FragmentTabHost) findViewById(android.R.id.tabhost);//綁定tabhost
        tabHost.setup(this, getSupportFragmentManager(), R.id.vp_pager);//TabHost綁定viewpager

        //獲取item的個數
        int count = title.length;

        for (int i = 0; i < count; i++) {
            //設置每個TabHost布局
            TabHost.TabSpec tabSpec = tabHost.newTabSpec(title[i])
                    .setIndicator(getTabItemView(i));

            //item與fragment關聯
            tabHost.addTab(tabSpec, fragmentArry[i], null);
            tabHost.setTag(i);
        }

        //初始化TabHost文字顏色
        upDateTab(tabHost);
        //給ViewPager設置適配器
        initVaper();
    }

    /**
     * 更新文字顏色。
     *
     * @param mTabHost
     */
    private void upDateTab(FragmentTabHost mTabHost) {
        for (int i = 0; i < mTabHost.getTabWidget().getChildCount(); i++) {
            TextView tv = (TextView) mTabHost.getTabWidget().getChildAt(i).findViewById(R.id.tv_item);
            if (mTabHost.getCurrentTab() == i) {//選中
                tv.setTextColor(Color.parseColor("#FF5959"));
            } else {//不選中
                tv.setTextColor(Color.parseColor("#777777"));
            }
        }
    }

    /**
     * 設置每個Item布局
     */
    private View getTabItemView(int i) {
        View view = LayoutInflater.from(this).inflate(R.layout.tab_content, null);

        ImageView itemImg = (ImageView) view.findViewById(R.id.iv_imageview);
        TextView itemText = (TextView) view.findViewById(R.id.tv_item);

        itemImg.setBackgroundResource(selectTabRes[i]);
        itemText.setText(title[i]);
        return view;
    }

    private void initData() {

    }

    private void initListener() {
        viewPager.addOnPageChangeListener(this);
        tabHost.setOnTabChangedListener(this);
    }

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

    }

    @Override
    public void onPageSelected(int position) {
        TabWidget widget = tabHost.getTabWidget();
        int oldFocusability = widget.getDescendantFocusability();
        widget.setDescendantFocusability(ViewGroup.FOCUS_BLOCK_DESCENDANTS);//設置View覆蓋子類控件而直接獲得焦點
        tabHost.setCurrentTab(position);//根據位置Postion設置當前的Tab
        widget.setDescendantFocusability(oldFocusability);//設置取消分割線
    }

    @Override
    public void onPageScrollStateChanged(int state) {

    }

    @Override
    public void onTabChanged(String tabId) {
        int position = tabHost.getCurrentTab();
        viewPager.setCurrentItem(position);//把選中的Tab的位置賦給適配器,讓它控制頁面切換
        upDateTab(tabHost);//設置TabHost文字顏色
    }

    /**
     * 適配器
     * */
    public class MyFragmentAdapter extends FragmentPagerAdapter {
        List list;

        public MyFragmentAdapter(FragmentManager fm, List list) {
            super(fm);
            this.list = list;
        }

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

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

(7)、效果圖演示

三、總結
這兩種方式的實現已完成,實現起來相對還是比較簡單的,后期有時間會把后面兩種的實現方式補上。
Demo代碼地址:底部公眾號回復"底部狀態欄切換"即可獲取。

以下是個人公眾號(longxuanzhigu),之后發布的文章會同步到該公眾號,方便交流學習Android知識及分享個人愛好文章:

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