关于ExpandableListAdapter

package jannonx.com.myapplication;

import android.database.DataSetObserver;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Gravity;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AbsListView;
import android.widget.ExpandableListAdapter;
import android.widget.ExpandableListView;
import android.widget.ExpandableListView.OnChildClickListener;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {
ExpandableListView listView;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
listView = (ExpandableListView) findViewById(R.id.list);

final MyExpandableListAdapter adapter = new MyExpandableListAdapter();
listView.setAdapter(adapter);
//为ExpandableListView的子列表单击事件设置监听器
listView.setOnChildClickListener(new OnChildClickListener() {
@Override
public boolean onChildClick(ExpandableListView parent, View v,
int groupPosition, int childPosition, long id) {
// TODO Auto-generated method stub
Toast.makeText(MainActivity.this, "你单击了："
+ adapter.getChild(groupPosition, childPosition), Toast.LENGTH_LONG).show();
return true;
}
});

//创建ExpandableListAdapter方式二
//        ExpandableListAdapter adapter = new BaseExpandableListAdapter() {
//            int[] logos = new int[]{
//                    R.drawable.fw02,
//                    R.drawable.fw05,
//                    R.drawable.fw06,
//                    R.drawable.fw07
//            };
//            private String[] armTypes = new String[]{
//                    "WORD", "EXCEL", "EMAIL", "PPT"
//            };
//            private String[][] arms = new String[][]{
//                    {"文档编辑", "文档排版", "文档处理", "文档打印"},
//                    {"表格编辑", "表格排版", "表格处理", "表格打印"},
//                    {"收发邮件", "管理邮箱", "登录登出", "注册绑定"},
//                    {"演示编辑", "演示排版", "演示处理", "演示打印"},
//            };
//
//            @Override
//            public int getGroupCount() {
//                return armTypes.length;
//            }
//
//            @Override
//            public int getChildrenCount(int groupPosition) {
//                return arms[groupPosition].length;
//            }
//
//            @Override
//            public Object getGroup(int groupPosition) {
//                return armTypes[groupPosition];
//            }
//
//            @Override
//            public Object getChild(int groupPosition, int childPosition) {
//                return arms[groupPosition][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) {
//                LinearLayout ll = new LinearLayout(MainActivity.this);
//                ll.setOrientation(LinearLayout.HORIZONTAL);
//                ImageView logo = new ImageView(MainActivity.this);
//                logo.setImageResource(logos[groupPosition]);
//                logo.setPadding(36, 15, 0, 0);
//                ll.addView(logo);
//                TextView textView = getTextView();
//                textView.setText(getGroup(groupPosition).toString());
//                textView.setPadding(10, 0, 0, 0);
//                ll.addView(textView);
//                return ll;
//            }
//
//            @Override
//            public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View convertView, ViewGroup parent) {
//                TextView textView = getTextView();
//                textView.setText(getChild(groupPosition, childPosition).toString());
//                return textView;
//            }
//
//            @Override
//            public boolean isChildSelectable(int groupPosition, int childPosition) {
//                return true;
//            }
//
//            @Over
4000
ride
//            public boolean areAllItemsEnabled() {
//                return false;
//            }
//
//            @Override
//            public boolean isEmpty() {
//                return false;
//            }
//
//            @Override
//            public void onGroupExpanded(int groupPosition) {
//
//            }
//
//            @Override
//            public void onGroupCollapsed(int groupPosition) {
//
//            }
//
//            @Override
//            public long getCombinedChildId(long groupId, long childId) {
//                return 0;
//            }
//
//            @Override
//            public long getCombinedGroupId(long groupId) {
//                return 0;
//            }
//
//            private 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 | Gravity.LEFT);
//                textView.setPadding(36, 0, 0, 0);
//                textView.setTextSize(20);
//                return textView;
//            }
//        };
//        listView.setAdapter(adapter);
}

class MyExpandableListAdapter implements ExpandableListAdapter {
int[] logos = new int[]{
R.drawable.fw02,
R.drawable.fw05,
R.drawable.fw06,
R.drawable.fw07
};
private String[] armTypes = new String[]{
"WORD", "EXCEL", "EMAIL", "PPT"
};
private String[][] arms = new String[][]{
{"文档编辑", "文档排版", "文档处理", "文档打印"},
{"表格编辑", "表格排版", "表格处理", "表格打印"},
{"收发邮件", "管理邮箱", "登录登出", "注册绑定"},
{"演示编辑", "演示排版", "演示处理", "演示打印"},
};
private int[][] armsImage=new int[][]{
{R.drawable.fw07,R.drawable.fw06,R.drawable.fw05,R.drawable.fw02,},
{R.drawable.fw07,R.drawable.fw06,R.drawable.fw05,R.drawable.fw02,},
{R.drawable.fw07,R.drawable.fw06,R.drawable.fw05,R.drawable.fw02,},
{R.drawable.fw07,R.drawable.fw06,R.drawable.fw05,R.drawable.fw02,},
};

@Override
public void registerDataSetObserver(DataSetObserver observer) {

}

@Override
public void unregisterDataSetObserver(DataSetObserver observer) {

}

@Override
public int getGroupCount() {
return armTypes.length;
}

@Override
public int getChildrenCount(int groupPosition) {
return arms[groupPosition].length;
}

@Override
public Object getGroup(int groupPosition) {
return armTypes[groupPosition];
}

@Override
public Object getChild(int groupPosition, int childPosition) {
return arms[groupPosition][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) {
LinearLayout ll = new LinearLayout(MainActivity.this);
ll.setOrientation(LinearLayout.HORIZONTAL);
ImageView logo = new ImageView(MainActivity.this);
logo.setImageResource(logos[groupPosition]);
logo.setPadding(36, 15, 0, 0);
ll.addView(logo);
TextView textView = getTextView();
textView.setText(getGroup(groupPosition).toString());
textView.setPadding(10, 0, 0, 0);
ll.addView(textView);
return ll;
}

@Override
public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View convertView, ViewGroup parent) {
LinearLayout ll=new LinearLayout(MainActivity.this);
ll.setOrientation(LinearLayout.HORIZONTAL);
ImageView imageView=new ImageView(MainActivity.this);
imageView.setImageResource(armsImage[groupPosition][childPosition]);
imageView.setPadding(50,15,0,0);
ll.addView(imageView);

TextView textView = getTextView();
textView.setText(getChild(groupPosition, childPosition).toString());
textView.setPadding(5,0,0,0);
textView.setTextSize(18);
ll.addView(textView);
return ll;
}

@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
return true;
}

@Override
public boolean areAllItemsEnabled() {
return false;
}

@Override
public boolean isEmpty() {
return false;
}

@Override
public void onGroupExpanded(int groupPosition) {

}

@Override
public void onGroupCollapsed(int groupPosition) {

}

@Override
public long getCombinedChildId(long groupId, long childId) {
return 0;
}

@Override
public long getCombinedGroupId(long groupId) {
return 0;
}

private 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 | Gravity.LEFT);
textView.setPadding(36, 0, 0, 0);
textView.setTextSize(20);
return textView;
}
}
}