package com.ycfy.myapplication;
import android.graphics.Color;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.Gravity;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.widget.AbsListView;
import android.widget.BaseExpandableListAdapter;
import android.widget.ExpandableListAdapter;
import android.widget.ExpandableListView;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.activity_main);
final ExpandableListAdapter adapter = new BaseExpandableListAdapter() {
//设置组视图的图片
int[] logos = new int[]{R.mipmap.ic_launcher, R.mipmap.ic_launcher, R.mipmap.ic_launcher};
//设置组视图的显示文字
private String[] generalsTypes = new String[]{"数字", "字母"};
//子视图显示文字
private String[][] generals = new String[][]{
{"0", "1", "2", "3", "4", "5", "6", "7", "8", "9"},
{"a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z"}
};
//子视图图片
public int[][] generallogos = new int[][]{
{
R.mipmap.ic_launcher, R.mipmap.ic_launcher, R.mipmap.ic_launcher, R.mipmap.ic_launcher, R.mipmap.ic_launcher,
R.mipmap.ic_launcher, R.mipmap.ic_launcher, R.mipmap.ic_launcher, R.mipmap.ic_launcher, R.mipmap.ic_launcher},
{
R.mipmap.ic_launcher, R.mipmap.ic_launcher, R.mipmap.ic_launcher, R.mipmap.ic_launcher, R.mipmap.ic_launcher,
R.mipmap.ic_launcher, R.mipmap.ic_launcher, R.mipmap.ic_launcher, R.mipmap.ic_launcher, R.mipmap.ic_launcher,
R.mipmap.ic_launcher, R.mipmap.ic_launcher, R.mipmap.ic_launcher, R.mipmap.ic_launcher, R.mipmap.ic_launcher,
R.mipmap.ic_launcher, R.mipmap.ic_launcher, R.mipmap.ic_launcher, R.mipmap.ic_launcher, R.mipmap.ic_launcher,
R.mipmap.ic_launcher, R.mipmap.ic_launcher, R.mipmap.ic_launcher, R.mipmap.ic_launcher, R.mipmap.ic_launcher, R.mipmap.ic_launcher}};
//自己定义一个获得文字信息的方法
TextView getTextView() {
AbsListView.LayoutParams lp = new AbsListView.LayoutParams(
ViewGroup.LayoutParams.FILL_PARENT, 64);
TextView textView = new TextView(MainActivity.this);
textView.setLayoutParams(lp);
textView.setGravity(Gravity.CENTER_VERTICAL);
textView.setPadding(36, 0, 0, 0);
textView.setTextSize(20);
textView.setTextColor(Color.BLACK);
return textView;
}
//重写ExpandableListAdapter中的各个方法
@Override
public int getGroupCount() {
// TODO Auto-generated method stub
return generalsTypes.length;
}
@Override
public Object getGroup(int groupPosition) {
// TODO Auto-generated method stub
return generalsTypes[groupPosition];
}
@Override
public long getGroupId(int groupPosition) {
// TODO Auto-generated method stub
return groupPosition;
}
@Override
public int getChildrenCount(int groupPosition) {
// TODO Auto-generated method stub
return generals[groupPosition].length;
}
@Override
public Object getChild(int groupPosition, int childPosition) {
// TODO Auto-generated method stub
return generals[groupPosition][childPosition];
}
@Override
public long getChildId(int groupPosition, int childPosition) {
// TODO Auto-generated method stub
return childPosition;
}
@Override
public boolean hasStableIds() {
// TODO Auto-generated method stub
return true;
}
@Override
public View getGroupView(int groupPosition, boolean isExpanded,
View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
LinearLayout ll = new LinearLayout(
MainActivity.this);
ll.setOrientation(LinearLayout.HORIZONTAL);
ImageView logo = new ImageView(MainActivity.this);
logo.setImageResource(logos[groupPosition]);
logo.setPadding(50, 0, 0, 0);
ll.addView(logo);
TextView textView = getTextView();
textView.setTextColor(Color.BLACK);
textView.setText(getGroup(groupPosition).toString());
ll.addView(textView);
return ll;
}
@Override
public View getChildView(int groupPosition, int childPosition,
boolean isLastChild, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
LinearLayout ll = new LinearLayout(
MainActivity.this);
ll.setOrientation(LinearLayout.HORIZONTAL);
ImageView generallogo = new ImageView(
MainActivity.this);
generallogo.setImageResource(generallogos[groupPosition][childPosition]);
ll.addView(generallogo);
TextView textView = getTextView();
textView.setText(getChild(groupPosition, childPosition)
.toString());
ll.addView(textView);
return ll;
}
@Override
public boolean isChildSelectable(int groupPosition,
int childPosition) {
// TODO Auto-generated method stub
return true;
}
};
ExpandableListView expandableListView = (ExpandableListView) findViewById(R.id.list);
expandableListView.setGroupIndicator(null);
expandableListView.setAdapter(adapter);
//设置item点击的监听器
expandableListView.setOnChildClickListener(new ExpandableListView.OnChildClickListener() {
@Override
public boolean onChildClick(ExpandableListView parent, View v,
int groupPosition, int childPosition, long id) {
Toast.makeText(
MainActivity.this,
"你点击了" + adapter.getChild(groupPosition, childPosition),
Toast.LENGTH_SHORT).show();
return false;
}
});
}
}
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<ExpandableListView
android:id="@+id/list"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#ffffff"
android:cacheColorHint="#00000000"
android:listSelector="#00000000"
>
</ExpandableListView>
</LinearLayout>
