package com.boyliupan.studylessions.listview;

import android.content.Context;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.view.Window;

import android.widget.BaseExpandableListAdapter;

import android.widget.ExpandableListView;

import android.widget.TextView;

import com.boyliupan.studylessions.R;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

public class ExpandListViewActivity extends AppCompatActivity {

    ExpandableListView expandableListView=null;

    List<String> parent=null;

    Map<String,List<String>> map=null;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        //requestWindowFeature(Window.FEATURE_NO_TITLE);

        setContentView(R.layout.activity_expand_list_view);

        expandableListView= (ExpandableListView) findViewById(R.id.expandLview);

        initData();

        expandableListView.setAdapter(new MySelfAdapter());

    }

    public void initData()

    {

        parent = new ArrayList<String>();

        parent.add("我的好友");

        parent.add("家人");

        parent.add("朋友");

        map = new HashMap<String, List<String>>();

        List<String> list1 = new ArrayList<String>();

        list1.add("张三");

        list1.add("李四");

        list1.add("王五");

        map.put("我的好友", list1);

        List<String> list2 = new ArrayList<String>();

        list2.add("刘邦");

        list2.add("刘霞");

        list2.add("刘萌");

        map.put("家人", list2);

        List<String> list3 = new ArrayList<String>();

        list3.add("影坠");

        list3.add("霍元子");

        list3.add("噩梦领主");

        map.put("朋友", list3);

    }

    class MySelfAdapter extends BaseExpandableListAdapter

    {

        @Override

        public int getGroupCount() {

            return parent.size();

        }

        @Override

        public int getChildrenCount(int groupPosition) {

            String key = parent.get(groupPosition);

            int count=map.get(key).size();

            return count;

        }

        @Override

        public Object getGroup(int groupPosition) {

            return parent.get(groupPosition);

        }

        @Override

        public Object getChild(int groupPosition, int childPosition) {

            String key = parent.get(groupPosition);

            return (map.get(key).get(childPosition));

        }

        @Override

        public long getGroupId(int groupPosition) {

            return groupPosition;

        }

        @Override

        public long getChildId(int groupPosition, int childPosition) {

            return childPosition;

        }

        @Override

        public boolean hasStableIds() {

            return true;

        }

        @Override

        public View getGroupView(int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) {

            if (convertView == null) {

                LayoutInflater inflater = (LayoutInflater) ExpandListViewActivity.this

                        .getSystemService(Context.LAYOUT_INFLATER_SERVICE);

                convertView = inflater.inflate(R.layout.layout_ex_parent, null);

            }

            TextView tv = (TextView) convertView

                    .findViewById(R.id.parenTv);

            tv.setText(ExpandListViewActivity.this.parent.get(groupPosition));

            return convertView;

        }

        @Override

        public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View convertView, ViewGroup parent) {

            String key = ExpandListViewActivity.this.parent.get(groupPosition);

            String info = map.get(key).get(childPosition);

            if (convertView == null) {

                LayoutInflater inflater = (LayoutInflater) ExpandListViewActivity.this

                        .getSystemService(Context.LAYOUT_INFLATER_SERVICE);

                convertView = inflater.inflate(R.layout.layout_ex_children, null);

            }

            TextView tv = (TextView) convertView

                    .findViewById(R.id.childTv);

            tv.setText(info);

            return convertView;

        }

        @Override

        public boolean isChildSelectable(int groupPosition, int childPosition) {

            return true;

        }

    }

}

package com.boyliupan.studylessions44678;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.view.ViewGroup;

import android.widget.AdapterViewFlipper;

import android.widget.BaseAdapter;

import android.widget.ImageView;

public class ViewFlipperActivity extends AppCompatActivity {

    int[] imgIDs=new int[]{R.drawable.head1,R.drawable.head2,R.drawable.head3,

        R.drawable.head4,R.drawable.head5};

    AdapterViewFlipper viewFlipper;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_view_flipper);

        viewFlipper= (AdapterViewFlipper) findViewById(R.id.flipper);

        BaseAdapter adapter=new BaseAdapter() {

            @Override

            public int getCount() {

                return  imgIDs.length;

            }

            @Override

            public Object getItem(int position) {

                return position;

            }

            @Override

            public long getItemId(int position) {

                return position;

            }

            //代表每一项的视图

            @Override

            public View getView(int position, View convertView, ViewGroup parent) {

                ImageView imageView=new ImageView(ViewFlipperActivity.this);

                imageView.setImageResource(imgIDs[position]);

                imageView.setScaleType(ImageView.ScaleType.FIT_XY);//设置缩放方式

                //设置布局参数

                imageView.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT));

                return imageView;

            }

        };

        viewFlipper.setAdapter(adapter);

    }

    //显示上一个

    public void pre(View view) {

        viewFlipper.showPrevious();

        viewFlipper.stopFlipping();

    }

    //显示下一个

    public void next(View view) {

        viewFlipper.showNext();

        viewFlipper.stopFlipping();

    }

    //自动播放

    public void auto(View view) {

        viewFlipper.startFlipping();

    }

}