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 Android教程網 >> Android技術 >> 關於Android編程 >> Android仿聯系人列表分組懸浮列表實現，自定義PinnedHeaderListView實現

Android仿聯系人列表分組懸浮列表實現，自定義PinnedHeaderListView實現

編輯：關於Android編程

效果
這裡寫圖片描述

（關於gif怎麼生成的，我先錄手機的屏幕得到mp4文件，然後用這個網址：https://cloudconvert.com/mp4-to-gif 進行的mp4轉換gif,使用的時候需要重新選擇gif的大小，不然生成的gif圖片太大了）

效果包括以下幾個方面
1. 當組的頭部從屏幕頂部消失，而且組還有成員在屏幕內的時候，組的頭部懸浮在屏幕頂部，並且為紅色背景（我設置的組的頭部是黃色背景）
2. 當下一個組的頭部滑到屏幕頂部與紅色的懸浮頭部挨著的時候，把紅色的頭部頂走（紅色頭部隨下一個組的頭部上滑而上滑，知道消失不見），最終懸浮的頭部被替代
3. 點擊header view,組頭部，組內元素，footer view分別響應各自的點擊事件

思路


1.懸浮header的實現

通過得到當前應該懸浮的頭部的view,調用listview的dispatchDraw方法，在Listview頭部繪制懸浮頭部

 @Override
    protected void dispatchDraw(Canvas canvas) {
        super.dispatchDraw(canvas);
        if(currentSectionHeader !=null){
            canvas.save();
            canvas.translate(0, currentSectionHeaderOffest);
            canvas.clipRect(0,0,currentSectionHeader.width,currentSectionHeader.height);
            currentSectionHeader.view.draw(canvas);
            canvas.restore();
        }
    }


2.懸浮header被頂出屏幕的實現：

通過改變變量currentSectionHeaderOffest來改變懸浮header的位置

if(nextIsSectionHeaderView.getTop() >= 0 && currentSectionHeader!=null && nextIsSectionHeaderView.getTop() < currentSectionHeader.height){
        currentSectionHeaderOffest = nextIsSectionHeaderView.getTop() - currentSectionHeader.height; // <0的哦
        Log.d(TAG,"move current section header view");
}
invalidate();


3.得到應該懸浮在頂部的view

遍歷所有可見的view，得到第一個是組的頭部的view的位置，組號，然後用adapter.getView(…)函數得到這個view

//遍歷所有可見的部分找到nextSectionHeader;
View nextIsSectionHeaderView = null;
for(int i=firstVisibleItem;i


4.監聽listview的onScroll , 時刻更新數據

@Override
    public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
        //重置currentSectionHeaderOffest
        currentSectionHeaderOffest = 0;
        headerCount = getHeaderViewsCount();
        if(mAdapter==null || mAdapter.getCount()<=0 || firstVisibleItem < headerCount){
            currentSectionHeader = null;
            nextSectionHeader = null;
            return;
        }
        firstVisibleItem = firstVisibleItem - headerCount ;
        //遍歷所有可見的部分找到nextSectionHeader;
        View nextIsSectionHeaderView = null;
        for(int i=firstVisibleItem;i= 0 && currentSectionHeader!=null && nextIsSectionHeaderView.getTop() < currentSectionHeader.height){
                currentSectionHeaderOffest = nextIsSectionHeaderView.getTop() - currentSectionHeader.height; // <0的哦
                Log.d(TAG,"move current section header view");
            }
            invalidate();
        }

    }


5.onItemClick的時候，注意header和footer的影響

/*********************************************************************************************
     *
     * 實現OnItemClickListener
     *
     **********************************************************************************************/
    @Override
    public void onItemClick(AdapterView parent, View view, int position, long id) {
        headerCount = getHeaderViewsCount();
        if(position < headerCount){
            if(mOnItemClickListener  !=null){
                mOnItemClickListener.onHeaderClick(parent, view, position, id);
            }
            return;
        }
        if(mAdapter!= null && position >= headerCount + mAdapter.getCount()){
            if(mOnItemClickListener  !=null){
                mOnItemClickListener.onFooterClick(parent, view, position - headerCount - mAdapter.getCount(), id);
            }
            return;
        }
        position = position - headerCount;

        int section = mAdapter.getSectionId(position);
        int positionInSection = mAdapter.getPositionIdInSection(position);

        if (mAdapter.isSectionHeader(position)) {
            if( mOnItemClickListener != null){
                mOnItemClickListener.onSectionClick(parent, view, section, id);
            }
        } else {
            if( mOnItemClickListener != null){
                mOnItemClickListener.onSectionItemClick(parent, view, section, positionInSection, id);
            }

        }
    }

    public void setOnMyItemClickListener(MyOnItemClickListener mOnItemClickListener){
        this.mOnItemClickListener = mOnItemClickListener;
    }

    public interface MyOnItemClickListener {

        void onSectionItemClick(AdapterView adapterView, View view, int section, int position, long id);

        void onSectionClick(AdapterView adapterView, View view, int section, long id);

        void onHeaderClick(AdapterView adapterView, View view, int position, long id);

        void onFooterClick(AdapterView adapterView, View view, int position, long id);

    }


全部源碼：

1.CustomPinnedHeaderListView.java

package com.example.myapp.view;

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

import com.example.myapp.adapter.CustomPinnedHeaderListViewBaseAdapter;
import com.example.myapp.github.pinnedheaderlistview.SectionedBaseAdapter;

/**
 * Created by zyr
 * DATE: 16-4-12
 * Time: 下午7:58
 * Email: [email protected]
 */
public class CustomPinnedHeaderListView extends ListView implements AbsListView.OnScrollListener , AdapterView.OnItemClickListener{

    private final static String TAG = "CusPinnedHeaderListView";

    private Context mContext;

    private SectionHeader currentSectionHeader;

    private SectionHeader nextSectionHeader;

    private int currentSectionHeaderOffest ;

    private CustomPinnedHeaderListViewBaseAdapter mAdapter;

    private int mWidthMode;

    private int mHeightMode;

    private MyOnItemClickListener mOnItemClickListener;

    private int headerCount; //header view counts

    /*********************************************************************************************
     *
     * 構造函數
     *
     **********************************************************************************************/
    public CustomPinnedHeaderListView(Context context) {
        this(context, null);
    }

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

    public CustomPinnedHeaderListView(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        mContext = context;
        setOnScrollListener(this);
        setOnItemClickListener(this);
    }

    @Override
    public void setAdapter(ListAdapter adapter) {
        super.setAdapter(adapter);
        if(adapter instanceof CustomPinnedHeaderListViewBaseAdapter){
            mAdapter = (CustomPinnedHeaderListViewBaseAdapter)adapter;
        }
        Log.d(TAG, "is my adapter null :" + (mAdapter == null));
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
        mWidthMode = MeasureSpec.getMode(widthMeasureSpec);
        mHeightMode = MeasureSpec.getMode(heightMeasureSpec);
    }

    /*********************************************************************************************
     *
     * 實現OnScrollListener
     *
     **********************************************************************************************/

    @Override
    public void onScrollStateChanged(AbsListView view, int scrollState) {

    }

    @Override
    public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
        //重置currentSectionHeaderOffest
        currentSectionHeaderOffest = 0;
        headerCount = getHeaderViewsCount();
        if(mAdapter==null || mAdapter.getCount()<=0 || firstVisibleItem < headerCount){
            currentSectionHeader = null;
            nextSectionHeader = null;
            return;
        }
        firstVisibleItem = firstVisibleItem - headerCount ;
        //遍歷所有可見的部分找到nextSectionHeader;
        View nextIsSectionHeaderView = null;
        for(int i=firstVisibleItem;i= 0 && currentSectionHeader!=null && nextIsSectionHeaderView.getTop() < currentSectionHeader.height){
                currentSectionHeaderOffest = nextIsSectionHeaderView.getTop() - currentSectionHeader.height; // <0的哦
                Log.d(TAG,"move current section header view");
            }
            invalidate();
        }

    }

    /*********************************************************************************************
     *
     * 實現dispatchDraw,最精髓的部分哦
     *
     **********************************************************************************************/

    @Override
    protected void dispatchDraw(Canvas canvas) {
        super.dispatchDraw(canvas);
//        Log.d(TAG, "is current section header null :" + (currentSectionHeader == null));
        if(currentSectionHeader !=null){
            canvas.save();
            canvas.translate(0, currentSectionHeaderOffest);
            canvas.clipRect(0, 0, currentSectionHeader.width, currentSectionHeader.height);
//            Log.d(TAG,"is current section header view null :" + (currentSectionHeader.view==null));
            currentSectionHeader.view.draw(canvas);
            canvas.restore();
        }
    }

    /*********************************************************************************************
     *
     * 實現OnItemClickListener
     *
     **********************************************************************************************/
    @Override
    public void onItemClick(AdapterView parent, View view, int position, long id) {
        headerCount = getHeaderViewsCount();
        if(position < headerCount){
            if(mOnItemClickListener  !=null){
                mOnItemClickListener.onHeaderClick(parent, view, position, id);
            }
            return;
        }
        if(mAdapter!= null && position >= headerCount + mAdapter.getCount()){
            if(mOnItemClickListener  !=null){
                mOnItemClickListener.onFooterClick(parent, view, position - headerCount - mAdapter.getCount(), id);
            }
            return;
        }
        position = position - headerCount;

        int section = mAdapter.getSectionId(position);
        int positionInSection = mAdapter.getPositionIdInSection(position);

        if (mAdapter.isSectionHeader(position)) {
            if( mOnItemClickListener != null){
                mOnItemClickListener.onSectionClick(parent, view, section, id);
            }
        } else {
            if( mOnItemClickListener != null){
                mOnItemClickListener.onSectionItemClick(parent, view, section, positionInSection, id);
            }

        }
    }

    public void setOnMyItemClickListener(MyOnItemClickListener mOnItemClickListener){
        this.mOnItemClickListener = mOnItemClickListener;
    }

    public interface MyOnItemClickListener {

        void onSectionItemClick(AdapterView adapterView, View view, int section, int position, long id);

        void onSectionClick(AdapterView adapterView, View view, int section, long id);

        void onHeaderClick(AdapterView adapterView, View view, int position, long id);

        void onFooterClick(AdapterView adapterView, View view, int position, long id);

    }

    /*********************************************************************************************
     *
     * inner class
     *
     **********************************************************************************************/

    class SectionHeader{
        public View view;
        public int sectionId;
        public int position;
        public int height;
        public int width;

        public SectionHeader(View view,int position,int sectionId){
            this.view = view;
            this.position = position;
            this.sectionId = sectionId;
            int widthMeasureSpec = MeasureSpec.makeMeasureSpec(getMeasuredWidth(), mWidthMode);
            int heightMeasureSpec  ;
            ViewGroup.LayoutParams layoutParams = this.view.getLayoutParams();
            if (layoutParams != null && layoutParams.height > 0) {
                heightMeasureSpec = MeasureSpec.makeMeasureSpec(layoutParams.height, MeasureSpec.EXACTLY);
            } else {
                heightMeasureSpec = MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED);
            }
            this.view.measure(widthMeasureSpec,heightMeasureSpec);
            this.height = this.view.getMeasuredHeight();
            this.width = this.view.getMeasuredWidth();
            this.view.setBackgroundColor(Color.RED);
//            Log.d(TAG,"width:" + this.width+ "  height:" + this.height);
        }
    }
}

2.CustomPinnedHeaderListViewBaseAdapter.java

package com.example.myapp.adapter;

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

/**
 * Created by zyr
 * DATE: 16-4-12
 * Time: 下午8:02
 * Email: [email protected]
 */
public abstract class CustomPinnedHeaderListViewBaseAdapter extends BaseAdapter{

    private final static String TAG = "CusPHLVBaseAdapter";

    /*********************************************************************************************
     *
     * BaseAdapter , Adapter的接口
     *
     **********************************************************************************************/
    @Override
    public abstract int getCount() ;

    @Override
    public abstract Object getItem(int position) ;

    @Override
    public abstract long getItemId(int position) ;

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        if(isSectionHeader(position)){
            Log.d(TAG,"p:" + position + "  s:" + getSectionId(position));
            return getSectionHeaderView(getSectionId(position) , convertView ,parent);
        } else{
            Log.d(TAG,"p:" + position + "  s:" + getSectionId(position) + "    pIns" + getPositionIdInSection(position));
            return getItemView(getSectionId(position) , getPositionIdInSection(position) , convertView , parent);
        }
    }

    @Override
    public abstract int getViewTypeCount() ;

    @Override
    public abstract int getItemViewType(int position) ;


    /*********************************************************************************************
     *
     * 一些必須實現的抽象放法
     *
     **********************************************************************************************/

    public abstract boolean isSectionHeader(int position) ;
    public abstract int getSectionId(int position) ;
    public abstract int getSectionPosition(int sectionId);
    public abstract View getSectionHeaderView(int section, View convertView, ViewGroup parent);
    public abstract int getSectionHeaderViewType(int section) ;
    public abstract int getPositionIdInSection(int position) ;
    public abstract Object getItem(int section, int positionInSection);
    public abstract long getItemId(int section, int positionInSection);
    public abstract int getSectionCount();
    public abstract int getCountInSection(int section);
    public abstract View getItemView(int section, int positionInSection, View convertView, ViewGroup parent);

}

3.CustomPinnedHeaderListViewAdapter.java

package com.example.myapp.adapter;

import android.content.Context;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import com.example.myapp.R;

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

/**
 * Created by zyr
 * DATE: 16-4-12
 * Time: 下午9:05
 * Email: [email protected]
 */
public class CustomPinnedHeaderListViewAdapter extends CustomPinnedHeaderListViewBaseAdapter {

    private final static String TAG = "CusPHeaderLvAdapter";

    private Context mContext;

    private List
 sections = new ArrayList<>();

    private int counts;

    private int sectionCounts;

    private Random random;

    public final static int TYPE_SECTION_HEADER = 1;

    public final static int TYPE_SECTION_ITEM = 2;

    public final static int TYPE_SECTION_ITEM_COUNT = 3;//getViewTypeCount() > getItemViewType返回的值

    /*********************************************************************************************
     *
     * 構造函數
     *
     **********************************************************************************************/

    public CustomPinnedHeaderListViewAdapter(Context context){
        this.mContext = context;
        this.random = new Random();
        this.sectionCounts = 10;

        int position = 0;
        for(int i=0;i items = new ArrayList<>();
        public int sectionId ;
        public String sectionName ;
        public int sectionItemCounts ;
    }

    class ItemViewHolder{
        public TextView itemName;

        public ItemViewHolder(View view){
            itemName = (TextView) view.findViewById(R.id.tv);
        }
    }

    class SectionHeaderViewHolder{
        public TextView sectionHeaderName;

        public SectionHeaderViewHolder(View view){
            sectionHeaderName = (TextView) view.findViewById(R.id.tv);
        }
    }

}

4.CustomPinnedHeaderListViewTestActivity.java

package com.example.myapp.activity;

import android.view.LayoutInflater;
import android.view.View;
import android.widget.AdapterView;

import com.example.myapp.R;
import com.example.myapp.adapter.CustomPinnedHeaderListViewAdapter;
import com.example.myapp.util.Methods;
import com.example.myapp.view.CustomPinnedHeaderListView;

/**
 * Created by zyr
 * DATE: 16-4-13
 * Time: 下午2:25
 * Email: [email protected]
 */
public class CustomPinnedHeaderListViewTestActivity extends BaseActivity{

    private CustomPinnedHeaderListView listView;

    private CustomPinnedHeaderListViewAdapter adapter;

    private View headerView;

    private View footerView;

    @Override
    protected void initView() {
        listView = (CustomPinnedHeaderListView)findViewById(R.id.lv);
        headerView = LayoutInflater.from(this).inflate(R.layout.cus_pinned_header_lv_header,null);
        footerView = LayoutInflater.from(this).inflate(R.layout.cus_pinned_header_lv_footer,null);
        listView.addHeaderView(headerView);
        listView.addFooterView(footerView);
        adapter = new CustomPinnedHeaderListViewAdapter(this);
        listView.setAdapter(adapter);
        listView.setOnMyItemClickListener(new CustomPinnedHeaderListView.MyOnItemClickListener() {
            @Override
            public void onSectionItemClick(AdapterView adapterView, View view, int section, int position, long id) {
                Methods.toast(CustomPinnedHeaderListViewTestActivity.this,"s:" + section + "    item:" + position);
            }

            @Override
            public void onSectionClick(AdapterView adapterView, View view, int section, long id) {
                Methods.toast(CustomPinnedHeaderListViewTestActivity.this,"s:" + section );
            }

            @Override
            public void onHeaderClick(AdapterView adapterView, View view, int position, long id) {
                Methods.toast(CustomPinnedHeaderListViewTestActivity.this,"header:" + position );
            }

            @Override
            public void onFooterClick(AdapterView adapterView, View view, int position, long id) {
                Methods.toast(CustomPinnedHeaderListViewTestActivity.this,"footer:" + position);
            }
        });
    }

    @Override
    protected int onSetContainerViewId() {
        return R.layout.activity_custom_pinned_header_lv;
    }

    @Override
    public void initListener() {

    }

    @Override
    public void onClick(View v) {

    }
}
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