仿闲鱼tabbar加二次点击刷新

1首先看layout

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/activity_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <android.support.v4.view.ViewPager
        android:id="@+id/viewPager"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:background="#ffffff" />

    <com.tabbar.demo.lib.MainNavigateTabBar
        android:id="@+id/mainTabBar"
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:layout_alignParentBottom="true"
        android:background="@android:color/white"
        app:navigateTabSelectedTextColor="@color/colorAccent"  展示选中文字颜色
        app:navigateTabTextColor="#333333" /> 默认文字颜色

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="76dp"
        android:layout_alignParentBottom="true"
        android:background="@android:color/transparent"
        android:gravity="center|top"
        android:orientation="vertical">

        <ImageView
            android:id="@+id/iv_add"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:src="@mipmap/comui_tab_post" />
    </LinearLayout>
</RelativeLayout>

2 使用了开源组件 MainNavigateTabBar，但是这个组件是把fragment的切换写在组件内了，使用上不能和viewpager共用。所以做了下修改，具体代码如下。

package com.tabbar.demo.lib;

import android.content.Context;
import android.content.res.ColorStateList;
import android.content.res.TypedArray;
import android.os.Bundle;
import android.text.TextUtils;
import android.util.AttributeSet;
import android.util.TypedValue;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;

import com.tabbar.demo.R;

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


/**
 * User:Shine
 * Date:2015-10-29
 * Description:
 */
public class MainNavigateTabBar extends LinearLayout implements View.OnClickListener {

    private static final String KEY_CURRENT_TAG = "com.startsmake.template。currentTag";

    private List<ViewHolder> mViewHolderList;
    private OnTabSelectedListener mTabSelectListener;
    private OnTabItemClickListener mTabItemClickListener;
    private String mCurrentTag;
    private String mRestoreTag;
    /*选中的Tab文字颜色*/
    private ColorStateList mSelectedTextColor;
    /*正常的Tab文字颜色*/
    private ColorStateList mNormalTextColor;
    /*Tab文字的颜色*/
    private float mTabTextSize;
    /*默认选中的tab index*/
    private int mDefaultSelectedTab = 0;

    private int mCurrentSelectedTab;

    public MainNavigateTabBar(Context context) {
        this(context, null);
    }

    public MainNavigateTabBar(Context context, AttributeSet attrs) {
        this(context, attrs, 0);
    }

    public MainNavigateTabBar(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        TypedArray typedArray = context.getTheme().obtainStyledAttributes(attrs, R.styleable.MainNavigateTabBar, 0, 0);
        ColorStateList tabTextColor = typedArray.getColorStateList(R.styleable.MainNavigateTabBar_navigateTabTextColor);
        //选中时文字颜色
        ColorStateList selectedTabTextColor = typedArray.getColorStateList(R.styleable.MainNavigateTabBar_navigateTabSelectedTextColor);
        //文字大小设置
        mTabTextSize = typedArray.getDimensionPixelSize(R.styleable.MainNavigateTabBar_navigateTabTextSize, 0);
        mNormalTextColor = (tabTextColor != null ? tabTextColor : context.getResources().getColorStateList(R.color.tab_text_normal));
        if (selectedTabTextColor != null) {
            mSelectedTextColor = selectedTabTextColor;
        } else {
            ThemeUtils.checkAppCompatTheme(context);
            TypedValue typedValue = new TypedValue();
            context.getTheme().resolveAttribute(R.attr.colorPrimary, typedValue, true);
            mSelectedTextColor = context.getResources().getColorStateList(typedValue.resourceId);
        }
        mViewHolderList = new ArrayList<>();
    }


    public void addTab(int position, TabParam tabParam) {
        int defaultLayout = R.layout.tabbar_item_view;
        if (TextUtils.isEmpty(tabParam.title) && tabParam.titleStringRes != 0) {
            tabParam.title = getContext().getString(tabParam.titleStringRes);
        }

        View view = LayoutInflater.from(getContext()).inflate(defaultLayout, null);
        view.setFocusable(true);

        ViewHolder holder = new ViewHolder();

        holder.tabIndex = position;

        holder.tag = tabParam.title;
        holder.pageParam = tabParam;

        holder.tabIcon = (ImageView) view.findViewById(R.id.tab_icon);
        holder.tabTitle = ((TextView) view.findViewById(R.id.tab_title));

        if (TextUtils.isEmpty(tabParam.title)) {
            holder.tabTitle.setVisibility(View.INVISIBLE);
        } else {
            holder.tabTitle.setText(tabParam.title);
        }

        if (mTabTextSize != 0) {
            holder.tabTitle.setTextSize(TypedValue.COMPLEX_UNIT_PX, mTabTextSize);
        }
        if (mNormalTextColor != null) {
            holder.tabTitle.setTextColor(mNormalTextColor);
        }

        if (tabParam.backgroundColor > 0) {
            view.setBackgroundResource(tabParam.backgroundColor);
        }

        if (tabParam.iconResId > 0) {
            holder.tabIcon.setImageResource(tabParam.iconResId);
        } else {
            holder.tabIcon.setVisibility(View.INVISIBLE);
        }

        if (tabParam.iconResId > 0 && tabParam.iconSelectedResId > 0) {
            view.setTag(holder);
            view.setOnClickListener(this);
            mViewHolderList.add(holder);
        }

        addView(view, new LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT, 1.0F));
        if (position == 0) {
            setCurrSelectedTabByTag(holder.tag);
        }
    }


    @Override
    public void onClick(View v) {
        Object object = v.getTag();
        if (object != null && object instanceof ViewHolder) {
            ViewHolder holder = (ViewHolder) v.getTag();
            if (mTabSelectListener != null) {
                setCurrSelectedTabByTag(holder.tag);
                if (mCurrentSelectedTab != holder.tabIndex) {//选中事件，屏弊已经选中callback
                    mTabSelectListener.onTabSelected(holder);
                }
                if (mTabItemClickListener != null) {//点击事件
                    mTabItemClickListener.onTabClicked(holder);
                }
                mCurrentSelectedTab = holder.tabIndex;
            }
        }
    }

    /*设置当前选中tab的图片和文字颜色*/
    private void setCurrSelectedTabByTag(String tag) {
        if (TextUtils.equals(mCurrentTag, tag)) {
            return;
        }
        for (ViewHolder holder : mViewHolderList) {
            if (TextUtils.equals(mCurrentTag, holder.tag)) {
                holder.tabIcon.setImageResource(holder.pageParam.iconResId);
                holder.tabTitle.setTextColor(mNormalTextColor);
            } else if (TextUtils.equals(tag, holder.tag)) {
                holder.tabIcon.setImageResource(holder.pageParam.iconSelectedResId);
                holder.tabTitle.setTextColor(mSelectedTextColor);
            }
        }
        mCurrentTag = tag;
    }

    public void setSelectedTabTextColor(ColorStateList selectedTextColor) {
        mSelectedTextColor = selectedTextColor;
    }

    public void setSelectedTabTextColor(int color) {
        mSelectedTextColor = ColorStateList.valueOf(color);
    }

    public void setTabTextColor(ColorStateList color) {
        mNormalTextColor = color;
    }

    public void setTabTextColor(int color) {
        mNormalTextColor = ColorStateList.valueOf(color);
    }


    public void onRestoreInstanceState(Bundle savedInstanceState) {
        if (savedInstanceState != null) {
            mRestoreTag = savedInstanceState.getString(KEY_CURRENT_TAG);
        }
    }

    public void onSaveInstanceState(Bundle outState) {
        outState.putString(KEY_CURRENT_TAG, mCurrentTag);
    }

    public static class ViewHolder {
        public String tag;
        public TabParam pageParam;
        public ImageView tabIcon;
        public TextView tabTitle;
        public android.support.v4.app.Fragment fragment;
        public int tabIndex;
    }


    public static class TabParam {
        public int backgroundColor = android.R.color.white;
        public int iconResId;
        public int iconSelectedResId;
        public int titleStringRes;
        public String title;

        public TabParam(int iconResId, int iconSelectedResId, String title) {
            this.iconResId = iconResId;
            this.iconSelectedResId = iconSelectedResId;
            this.title = title;
        }

        public TabParam(int iconResId, int iconSelectedResId, int titleStringRes) {
            this.iconResId = iconResId;
            this.iconSelectedResId = iconSelectedResId;
            this.titleStringRes = titleStringRes;
        }

        public TabParam(int backgroundColor, int iconResId, int iconSelectedResId, int titleStringRes) {
            this.backgroundColor = backgroundColor;
            this.iconResId = iconResId;
            this.iconSelectedResId = iconSelectedResId;
            this.titleStringRes = titleStringRes;
        }

        public TabParam(int backgroundColor, int iconResId, int iconSelectedResId, String title) {
            this.backgroundColor = backgroundColor;
            this.iconResId = iconResId;
            this.iconSelectedResId = iconSelectedResId;
            this.title = title;
        }
    }


    public interface OnTabSelectedListener {
        void onTabSelected(ViewHolder holder);
    }

    public interface OnTabItemClickListener {
        void onTabClicked(ViewHolder holder);
    }

    public void setTabSelectListener(OnTabSelectedListener tabSelectListener) {
        mTabSelectListener = tabSelectListener;
    }

    public void setDefaultSelectedTab(int index) {
        if (index >= 0 && index < mViewHolderList.size()) {
            mDefaultSelectedTab = index;
        }
    }

    public void setCurretSelectedTab(int index) {
        if (mCurrentSelectedTab == index && mCurrentSelectedTab != 0) {
            return;
        }
        for (ViewHolder holder : mViewHolderList) {
            if (mCurrentSelectedTab == holder.tabIndex) {
                holder.tabIcon.setImageResource(holder.pageParam.iconResId);
                holder.tabTitle.setTextColor(mNormalTextColor);
            }
            if (index == holder.tabIndex) {
                holder.tabIcon.setImageResource(holder.pageParam.iconSelectedResId);
                holder.tabTitle.setTextColor(mSelectedTextColor);
            }
        }
        mCurrentSelectedTab = index;
    }

    public int getCurrentSelectedTab() {
        return mCurrentSelectedTab;
    }

    public void setTabItemClickListener(OnTabItemClickListener mTabItemClickListener) {
        this.mTabItemClickListener = mTabItemClickListener;
    }
}

3

 mainActivy:代码如下：

package com.tabbar.demo.activity;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.ImageView;
import android.widget.Toast;

import com.tabbar.demo.R;
import com.tabbar.demo.adapter.HomeFragmentAdapter;
import com.tabbar.demo.fragment.PageFragment;
import com.tabbar.demo.lib.MainNavigateTabBar;

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

public class MainActivity extends AppCompatActivity implements View.OnClickListener {

    private ImageView mIvAdd;
    private HomeFragmentAdapter adapter;
    private List<Fragment> fragmentList = new ArrayList<>();
    private String[] titles = new String[]{"首页", "同城", "消息", "我的"};
    private int[] normalImgs = new int[]{R.mipmap.comui_tab_home, R.mipmap.comui_tab_city, R.mipmap.comui_tab_message, R.mipmap.comui_tab_person};


    private MainNavigateTabBar tabBar;
    private ViewPager viewPager;

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

        tabBar = (MainNavigateTabBar) findViewById(R.id.mainTabBar);
        viewPager = (ViewPager) findViewById(R.id.viewPager);
        mIvAdd= (ImageView) findViewById(R.id.iv_add);
        tabBar.onRestoreInstanceState(savedInstanceState);
        doBusiness(savedInstanceState);
    }


    @Override
    protected void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
        tabBar.onSaveInstanceState(outState);
    }


    public void doBusiness(Bundle saveInstance) {
        initFragment();
        adapter = new HomeFragmentAdapter(getSupportFragmentManager(),
                this, titles, fragmentList);
        viewPager.setAdapter(adapter);
        viewPager.setOffscreenPageLimit(4);
        mIvAdd.setOnClickListener(this);
        // 使用第三方tabbar
        tabBar.onRestoreInstanceState(saveInstance);
        int length = titles.length + 1;
        for (int i = 0; i < length; i++) {
            int position = i;
            if (i > 2) {
                position = i - 1;
            }
            if (i != 2) {
                tabBar.addTab(position, new MainNavigateTabBar.TabParam(normalImgs[position], R.mipmap.ic_refresh, titles[position]));
            } else {
                tabBar.addTab(i, new MainNavigateTabBar.TabParam(0, 0, ""));
            }
        }

        tabBar.setTabSelectListener(new MainNavigateTabBar.OnTabSelectedListener() {
            @Override
            public void onTabSelected(MainNavigateTabBar.ViewHolder holder) {
                int position = holder.tabIndex;
                viewPager.setCurrentItem(position);
            }
        });
        tabBar.setTabItemClickListener(new MainNavigateTabBar.OnTabItemClickListener() {
            @Override
            public void onTabClicked(MainNavigateTabBar.ViewHolder holder) {
                if (holder.tabIndex == tabBar.getCurrentSelectedTab()) {
                    showToast("刷新" + holder.tabTitle.getText());
                }
            }
        });
    }

    private void initFragment() {
        fragmentList.add(PageFragment.newInstance(0));
        fragmentList.add(PageFragment.newInstance(1));
        fragmentList.add(PageFragment.newInstance(2));
        fragmentList.add(PageFragment.newInstance(3));
    }


    @Override
    public void onClick(View v) {
        switch (v.getId()) {
            case R.id.iv_add:
                showToast("点击了add");
                break;
        }
    }

    public void showToast(String text) {
        Toast.makeText(MainActivity.this, text, Toast.LENGTH_SHORT).show();
    }
}

源码链接：点击打开链接

效果图：