Android之两级联动点餐列表

---

前言

此功能为两个listview相互联动，左边listview点击右边联动，右边listview滑动联动左侧listview，仿饿了吗点餐列表

---

提示：以下是本篇文章正文内容，下面案例可供参考

一、效果图

二、实现步骤

1.相关layout

1：主界面layout，两个listview，右侧listview自定义的：

   <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_above="@+id/rela_button"
        android:layout_below="@+id/linear_top"
        android:layout_marginTop="10dp"
        android:layout_marginBottom="2dp"
        android:orientation="horizontal">

        <ListView
            android:id="@+id/left_listview"
            android:layout_width="84dp"
            android:layout_height="match_parent"
            android:background="#ffffff"
            android:divider="@null"
            android:scrollbars="none" />

        <com.example.mobilecashier.view.PinnedHeaderListView
            android:id="@+id/pinnedListView"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_marginLeft="10dp"
            android:background="#ffffff"></com.example.mobilecashier.view.PinnedHeaderListView>
    </LinearLayout>

2.左侧listview的item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:background="#EBEDF0"
    android:orientation="vertical" >
    
	<TextView 
	    android:id="@+id/left_list_item"
	    android:layout_width="match_parent"
	    android:layout_height="60dp"
	    android:padding="12dp"
		android:gravity="center_vertical"
		android:textColor="#444444"/>
    
</LinearLayout>

2.右侧侧listview的item布局

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="#ffffff"
    android:padding="6dp">

    <ImageView
        android:id="@+id/imageItem"
        android:layout_width="50dp"
        android:layout_height="50dp"
        android:scaleType="fitXY"
        android:src="@drawable/pic"/>

    <TextView
        android:id="@+id/textItem"
        android:layout_width="wrap_content"
        android:layout_height="50dp"
        android:gravity="center_vertical"
        android:paddingLeft="6dp"
        android:layout_toRightOf="@+id/imageItem"
        android:textColor="#444444" />
</RelativeLayout>

2.相关adapter

1：左侧adapter

package com.example.mobilecashier.adapter;

import android.content.Context;
import android.graphics.Color;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;

import com.example.mobilecashier.R;


/**
 * 左侧Adapter
 */
public class LeftListAdapter extends BaseAdapter {
    private String[] leftStr;
    boolean[] flagArray;
    private Context context;

    public LeftListAdapter(Context context, String[] leftStr, boolean[] flagArray) {
        this.leftStr = leftStr;
        this.context = context;
        this.flagArray = flagArray;
    }

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

    @Override
    public Object getItem(int arg0) {
        return leftStr[arg0];
    }

    @Override
    public long getItemId(int arg0) {
        return arg0;
    }

    @Override
    public View getView(int arg0, View arg1, ViewGroup arg2) {
        Holder holder = null;
        if (arg1 == null) {
            holder = new Holder();
            arg1 = LayoutInflater.from(context).inflate(R.layout.left_list_item, null);
            holder.left_list_item = (TextView) arg1.findViewById(R.id.left_list_item);
            arg1.setTag(holder);
        } else {
            holder = (Holder) arg1.getTag();
        }
        holder.updataView(arg0);
        return arg1;
    }

    private class Holder {
        private TextView left_list_item;

        public void updataView(final int position) {
            left_list_item.setText(leftStr[position]);
            if (flagArray[position]) {
                left_list_item.setBackgroundColor(Color.rgb(255, 255, 255));
            } else {
                left_list_item.setBackgroundColor(Color.TRANSPARENT);
            }
        }

    }
}

2：右侧adapter

package com.example.mobilecashier.adapter;


import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.widget.Toast;

import com.example.mobilecashier.R;

/**
 * 基本功能：右侧Adapter
 */
public class MainSectionedAdapter extends SectionedBaseAdapter {

    private Context mContext;
    private String[] leftStr;
    private String[][] rightStr;

    public MainSectionedAdapter(Context context, String[] leftStr, String[][] rightStr) {
        this.mContext = context;
        this.leftStr = leftStr;
        this.rightStr = rightStr;
    }

    @Override
    public Object getItem(int section, int position) {
        return rightStr[section][position];
    }

    @Override
    public long getItemId(int section, int position) {
        return position;
    }

    @Override
    public int getSectionCount() {
        return leftStr.length;
    }

    @Override
    public int getCountForSection(int section) {
        return rightStr[section].length;
    }

    @Override
    public View getItemView(final int section, final int position, View convertView, ViewGroup parent) {
        RelativeLayout layout = null;
        if (convertView == null) {
            LayoutInflater inflator = (LayoutInflater) parent.getContext()
                    .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            layout = (RelativeLayout) inflator.inflate(R.layout.right_list_item, null);
        } else {
            layout = (RelativeLayout) convertView;
        }
        ((TextView) layout.findViewById(R.id.textItem)).setText(rightStr[section][position]);
        layout.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View arg0) {
                Toast.makeText(mContext, rightStr[section][position], Toast.LENGTH_SHORT).show();
            }
        });
        return layout;
    }

    @Override
    public View getSectionHeaderView(int section, View convertView, ViewGroup parent) {
        LinearLayout layout = null;
        if (convertView == null) {
            LayoutInflater inflator = (LayoutInflater) parent.getContext()
                    .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            layout = (LinearLayout) inflator.inflate(R.layout.header_item, null);
        } else {
            layout = (LinearLayout) convertView;
        }
        layout.setClickable(false);
        ((TextView) layout.findViewById(R.id.textItem)).setText(leftStr[section]);
        return layout;
    }

}

3：继承adapter

package com.example.mobilecashier.adapter;


import android.util.SparseArray;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;

import com.example.mobilecashier.view.PinnedHeaderListView;


public abstract class SectionedBaseAdapter extends BaseAdapter implements PinnedHeaderListView.PinnedSectionedHeaderAdapter {

    private static int HEADER_VIEW_TYPE = 0;
    private static int ITEM_VIEW_TYPE = 0;

    /**
     * Holds the calculated values of @{link getPositionInSectionForPosition}
     */
    private SparseArray<Integer> mSectionPositionCache;
    /**
     * Holds the calculated values of @{link getSectionForPosition}
     */
    private SparseArray<Integer> mSectionCache;
    /**
     * Holds the calculated values of @{link getCountForSection}
     */
    private SparseArray<Integer> mSectionCountCache;

    /**
     * Caches the item count
     */
    private int mCount;
    /**
     * Caches the section count
     */
    private int mSectionCount;

    public SectionedBaseAdapter() {
        super();
        mSectionCache = new SparseArray<Integer>();
        mSectionPositionCache = new SparseArray<Integer>();
        mSectionCountCache = new SparseArray<Integer>();
        mCount = -1;
        mSectionCount = -1;
    }

    @Override
    public void notifyDataSetChanged() {
        mSectionCache.clear();
        mSectionPositionCache.clear();
        mSectionCountCache.clear();
        mCount = -1;
        mSectionCount = -1;
        super.notifyDataSetChanged();
    }

    @Override
    public void notifyDataSetInvalidated() {
        mSectionCache.clear();
        mSectionPositionCache.clear();
        mSectionCountCache.clear();
        mCount = -1;
        mSectionCount = -1;
        super.notifyDataSetInvalidated();
    }

    @Override
    public final int getCount() {
        if (mCount >= 0) {
            return mCount;
        }
        int count = 0;
        for (int i = 0; i < internalGetSectionCount(); i++) {
            count += internalGetCountForSection(i);
            count++; // for the header view
        }
        mCount = count;
        return count;
    }

    @Override
    public final Object getItem(int position) {
        return getItem(getSectionForPosition(position), getPositionInSectionForPosition(position));
    }

    @Override
    public final long getItemId(int position) {
        return getItemId(getSectionForPosition(position), getPositionInSectionForPosition(position));
    }

    @Override
    public final View getView(int position, View convertView, ViewGroup parent) {
        if (isSectionHeader(position)) {
            return getSectionHeaderView(getSectionForPosition(position), convertView, parent);
        }
        return getItemView(getSectionForPosition(position), getPositionInSectionForPosition(position), convertView, parent);
    }

    @Override
    public final int getItemViewType(int position) {
        if (isSectionHeader(position)) {
            return getItemViewTypeCount() + getSectionHeaderViewType(getSectionForPosition(position));
        }
        return getItemViewType(getSectionForPosition(position), getPositionInSectionForPosition(position));
    }

    @Override
    public final int getViewTypeCount() {
        return getItemViewTypeCount() + getSectionHeaderViewTypeCount();
    }

    public final int getSectionForPosition(int position) {
        // first try to retrieve values from cache
        Integer cachedSection = mSectionCache.get(position);
        if (cachedSection != null) {
            return cachedSection;
        }
        int sectionStart = 0;
        for (int i = 0; i < internalGetSectionCount(); i++) {
            int sectionCount = internalGetCountForSection(i);
            int sectionEnd = sectionStart + sectionCount + 1;
            if (position >= sectionStart && position < sectionEnd) {
                mSectionCache.put(position, i);
                return i;
            }
            sectionStart = sectionEnd;
        }
        return 0;
    }

    public int getPositionInSectionForPosition(int position) {
        // first try to retrieve values from cache
        Integer cachedPosition = mSectionPositionCache.get(position);
        if (cachedPosition != null) {
            return cachedPosition;
        }
        int sectionStart = 0;
        for (int i = 0; i < internalGetSectionCount(); i++) {
            int sectionCount = internalGetCountForSection(i);
            int sectionEnd = sectionStart + sectionCount + 1;
            if (position >= sectionStart && position < sectionEnd) {
                int positionInSection = position - sectionStart - 1;
                mSectionPositionCache.put(position, positionInSection);
                return positionInSection;
            }
            sectionStart = sectionEnd;
        }
        return 0;
    }

    public final boolean isSectionHeader(int position) {
        int sectionStart = 0;
        for (int i = 0; i < internalGetSectionCount(); i++) {
            if (position == sectionStart) {
                return true;
            } else if (position < sectionStart) {
                return false;
            }
            sectionStart += internalGetCountForSection(i) + 1;
        }
        return false;
    }

    public int getItemViewType(int section, int position) {
        return ITEM_VIEW_TYPE;
    }

    public int getItemViewTypeCount() {
        return 1;
    }

    public int getSectionHeaderViewType(int section) {
        return HEADER_VIEW_TYPE;
    }

    public int getSectionHeaderViewTypeCount() {
        return 1;
    }

    public abstract Object getItem(int section, int position);

    public abstract long getItemId(int section, int position);

    public abstract int getSectionCount();

    public abstract int getCountForSection(int section);

    public abstract View getItemView(int section, int position, View convertView, ViewGroup parent);

    public abstract View getSectionHeaderView(int section, View convertView, ViewGroup parent);

    private int internalGetCountForSection(int section) {
        Integer cachedSectionCount = mSectionCountCache.get(section);
        if (cachedSectionCount != null) {
            return cachedSectionCount;
        }
        int sectionCount = getCountForSection(section);
        mSectionCountCache.put(section, sectionCount);
        return sectionCount;
    }

    private int internalGetSectionCount() {
        if (mSectionCount >= 0) {
            return mSectionCount;
        }
        mSectionCount = getSectionCount();
        return mSectionCount;
    }

}

3.自定义view

package com.example.mobilecashier.view;

import android.content.Context;
import android.graphics.Canvas;
import android.util.AttributeSet;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AbsListView;
import android.widget.AbsListView.OnScrollListener;
import android.widget.AdapterView;
import android.widget.HeaderViewListAdapter;
import android.widget.ListAdapter;
import android.widget.ListView;

import com.example.mobilecashier.adapter.SectionedBaseAdapter;


public class PinnedHeaderListView extends ListView implements OnScrollListener {

    private OnScrollListener mOnScrollListener;

    public static interface PinnedSectionedHeaderAdapter {
        public boolean isSectionHeader(int position);

        public int getSectionForPosition(int position);

        public View getSectionHeaderView(int section, View convertView, ViewGroup parent);

        public int getSectionHeaderViewType(int section);

        public int getCount();

    }

    private PinnedSectionedHeaderAdapter mAdapter;
    private View mCurrentHeader;
    private int mCurrentHeaderViewType = 0;
    private float mHeaderOffset;
    private boolean mShouldPin = true;
    private int mCurrentSection = 0;
    private int mWidthMode;
    private int mHeightMode;

    public PinnedHeaderListView(Context context) {
        super(context);
        super.setOnScrollListener(this);
    }

    public PinnedHeaderListView(Context context, AttributeSet attrs) {
        super(context, attrs);
        super.setOnScrollListener(this);
    }

    public PinnedHeaderListView(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        super.setOnScrollListener(this);
    }

    public void setPinHeaders(boolean shouldPin) {
        mShouldPin = shouldPin;
    }

    @Override
    public void setAdapter(ListAdapter adapter) {
        mCurrentHeader = null;
        mAdapter = (PinnedSectionedHeaderAdapter) adapter;
        super.setAdapter(adapter);
    }

    @Override
    public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
        if (mOnScrollListener != null) {
            mOnScrollListener.onScroll(view, firstVisibleItem, visibleItemCount, totalItemCount);
        }

        if (mAdapter == null || mAdapter.getCount() == 0 || !mShouldPin || (firstVisibleItem < getHeaderViewsCount())) {
            mCurrentHeader = null;
            mHeaderOffset = 0.0f;
            for (int i = firstVisibleItem; i < firstVisibleItem + visibleItemCount; i++) {
                View header = getChildAt(i);
                if (header != null) {
                    header.setVisibility(VISIBLE);
                }
            }
            return;
        }

        firstVisibleItem -= getHeaderViewsCount();

        int section = mAdapter.getSectionForPosition(firstVisibleItem);
        int viewType = mAdapter.getSectionHeaderViewType(section);
        mCurrentHeader = getSectionHeaderView(section, mCurrentHeaderViewType != viewType ? null : mCurrentHeader);
        ensurePinnedHeaderLayout(mCurrentHeader);
        mCurrentHeaderViewType = viewType;

        mHeaderOffset = 0.0f;

        for (int i = firstVisibleItem; i < firstVisibleItem + visibleItemCount; i++) {
            if (mAdapter.isSectionHeader(i)) {
                View header = getChildAt(i - firstVisibleItem);
                float headerTop = header.getTop();
                float pinnedHeaderHeight = mCurrentHeader.getMeasuredHeight();
                header.setVisibility(VISIBLE);
                if (pinnedHeaderHeight >= headerTop && headerTop > 0) {
                    mHeaderOffset = headerTop - header.getHeight();
                } else if (headerTop <= 0) {
                    header.setVisibility(INVISIBLE);
                }
            }
        }

        invalidate();
    }

    @Override
    public void onScrollStateChanged(AbsListView view, int scrollState) {
        if (mOnScrollListener != null) {
            mOnScrollListener.onScrollStateChanged(view, scrollState);
        }
    }

    private View getSectionHeaderView(int section, View oldView) {
        boolean shouldLayout = section != mCurrentSection || oldView == null;

        View view = mAdapter.getSectionHeaderView(section, oldView, this);
        if (shouldLayout) {
            // a new section, thus a new header. We should lay it out again
            ensurePinnedHeaderLayout(view);
            mCurrentSection = section;
        }
        return view;
    }

    private void ensurePinnedHeaderLayout(View header) {
        if (header.isLayoutRequested()) {
            int widthSpec = MeasureSpec.makeMeasureSpec(getMeasuredWidth(), mWidthMode);

            int heightSpec;
            ViewGroup.LayoutParams layoutParams = header.getLayoutParams();
            if (layoutParams != null && layoutParams.height > 0) {
                heightSpec = MeasureSpec.makeMeasureSpec(layoutParams.height, MeasureSpec.EXACTLY);
            } else {
                heightSpec = MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED);
            }
            header.measure(widthSpec, heightSpec);
            header.layout(0, 0, header.getMeasuredWidth(), header.getMeasuredHeight());
        }
    }

    @Override
    protected void dispatchDraw(Canvas canvas) {
        super.dispatchDraw(canvas);
        if (mAdapter == null || !mShouldPin || mCurrentHeader == null)
            return;
        int saveCount = canvas.save();
        canvas.translate(0, mHeaderOffset);
        canvas.clipRect(0, 0, getWidth(), mCurrentHeader.getMeasuredHeight()); // needed
        // for
        // <
        // HONEYCOMB
        mCurrentHeader.draw(canvas);
        canvas.restoreToCount(saveCount);
    }

    @Override
    public void setOnScrollListener(OnScrollListener l) {
        mOnScrollListener = l;
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);

        mWidthMode = MeasureSpec.getMode(widthMeasureSpec);
        mHeightMode = MeasureSpec.getMode(heightMeasureSpec);
    }

    public void setOnItemClickListener(OnItemClickListener listener) {
        super.setOnItemClickListener(listener);
    }

    public static abstract class OnItemClickListener implements AdapterView.OnItemClickListener {
        @Override
        public void onItemClick(AdapterView<?> adapterView, View view, int rawPosition, long id) {
            SectionedBaseAdapter adapter;
            if (adapterView.getAdapter().getClass().equals(HeaderViewListAdapter.class)) {
                HeaderViewListAdapter wrapperAdapter = (HeaderViewListAdapter) adapterView.getAdapter();
                adapter = (SectionedBaseAdapter) wrapperAdapter.getWrappedAdapter();
            } else {
                adapter = (SectionedBaseAdapter) adapterView.getAdapter();
            }
            int section = adapter.getSectionForPosition(rawPosition);
            int position = adapter.getPositionInSectionForPosition(rawPosition);

            if (position == -1) {
                onSectionClick(adapterView, view, section, id);
            } else {
                onItemClick(adapterView, view, section, position, id);
            }
        }

        public abstract void onItemClick(AdapterView<?> adapterView, View view, int section, int position, long id);

        public abstract void onSectionClick(AdapterView<?> adapterView, View view, int section, long id);

    }
}

4.activity实现

//全局变量
  private boolean isScroll = true;
    ListView left_listview;//左侧列表
    PinnedHeaderListView pinnedListView;//右侧列表
    private LeftListAdapter adapter;
    private String[] leftStr = new String[]{"面食类", "盖饭", "寿司", "烧烤", "酒水", "凉菜", "小吃", "粥", "休闲"};
    private boolean[] flagArray = {true, false, false, false, false, false, false, false, false};
    private String[][] rightStr = new String[][]{{"热干面", "臊子面", "烩面"},
            {"番茄鸡蛋", "红烧排骨", "农家小炒肉"},
            {"芝士", "丑小丫", "金枪鱼"}, {"羊肉串", "烤鸡翅", "烤羊排"}, {"长城干红", "燕京鲜啤", "青岛鲜啤"},
            {"拌粉丝", "大拌菜", "菠菜花生"}, {"小食组", "紫薯"},
            {"小米粥", "大米粥", "南瓜粥", "玉米粥", "紫米粥"}, {"儿童小汽车", "悠悠球", "熊大", " 熊二", "光头强"}
    };

  /**
     * 实例化
     */
    private void instantiation() {
        left_listview = findViewById(R.id.left_listview);
        pinnedListView = findViewById(R.id.pinnedListView);
        final MainSectionedAdapter sectionedAdapter = new MainSectionedAdapter(this, leftStr, rightStr);
        pinnedListView.setAdapter(sectionedAdapter);
        adapter = new LeftListAdapter(this, leftStr, flagArray);
        left_listview.setAdapter(adapter);
        left_listview.setOnItemClickListener(new AdapterView.OnItemClickListener() {

            @Override
            public void onItemClick(AdapterView<?> arg0, View view, int position, long arg3) {
                isScroll = false;

                for (int i = 0; i < leftStr.length; i++) {
                    if (i == position) {
                        flagArray[i] = true;
                    } else {
                        flagArray[i] = false;
                    }
                }
                adapter.notifyDataSetChanged();
                int rightSection = 0;
                for (int i = 0; i < position; i++) {
                    rightSection += sectionedAdapter.getCountForSection(i) + 1;
                }
                pinnedListView.setSelection(rightSection);

            }

        });
        pinnedListView.setOnScrollListener(new AbsListView.OnScrollListener() {
            @Override
            public void onScrollStateChanged(AbsListView arg0, int scrollState) {
                switch (scrollState) {
                    // 当不滚动时
                    case AbsListView.OnScrollListener.SCROLL_STATE_IDLE:
                        // 判断滚动到底部
                        if (pinnedListView.getLastVisiblePosition() == (pinnedListView.getCount() - 1)) {
                            left_listview.setSelection(ListView.FOCUS_DOWN);
                        }

                        // 判断滚动到顶部
                        if (pinnedListView.getFirstVisiblePosition() == 0) {
                            left_listview.setSelection(0);
                        }

                        break;
                }
            }

            int y = 0;
            int x = 0;
            int z = 0;

            @Override
            public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
                if (isScroll) {
                    for (int i = 0; i < rightStr.length; i++) {
                        if (i == sectionedAdapter.getSectionForPosition(pinnedListView.getFirstVisiblePosition())) {
                            flagArray[i] = true;
                            x = i;
                        } else {
                            flagArray[i] = false;
                        }
                    }
                    if (x != y) {
                        adapter.notifyDataSetChanged();
                        y = x;
                        if (y == left_listview.getLastVisiblePosition()) {
//                            z = z + 3;
                            left_listview.setSelection(z);
                        }
                        if (x == left_listview.getFirstVisiblePosition()) {
//                            z = z - 1;
                            left_listview.setSelection(z);
                        }
                        if (firstVisibleItem + visibleItemCount == totalItemCount - 1) {
                            left_listview.setSelection(ListView.FOCUS_DOWN);
                        }
                    }
                } else {
                    isScroll = true;
                }
            }
        });
    }

---

补贴一个header_item的布局

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

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:background="#EBEDF0"
    android:orientation="horizontal">

    <TextView
        android:id="@+id/textItem"
        android:layout_width="wrap_content"
        android:layout_height="30dp"
        android:layout_gravity="center_vertical"
        android:layout_marginLeft="10dp"
        android:gravity="center_vertical"
        android:paddingLeft="6dp"
        android:textColor="#444444" />
</LinearLayout>

总结

以上就是listview两级联动全部代码，如有指教私信我。