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();
    }
}