부모, 두 번째 노드 및 하위 노드의 개별 이름을 가진 트리를 표시하려고합니다. Google 도움말을 사용하여 코딩했습니다. 이 코드 표시 트리에는 이름이 같은 모든 두 번째 및 하위 노드가 있습니다. 트리의 각 노드에 고유 한 이름을 부여하려면 어떻게합니까?각 노드에 고유 한 이름을 부여하는 방법
내 자바 코드는 다음과 같습니다
package com.example.tree;
import android.app.Activity;
import android.content.Context;
import android.graphics.Color;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseExpandableListAdapter;
import android.widget.ExpandableListView;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.LinearLayout.LayoutParams;
public class MainActivity extends Activity {
ExpandableListView explvlist;
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
explvlist = (ExpandableListView)findViewById(R.id.ParentLevel);
explvlist.setAdapter(new ParentLevel());
}
public class ParentLevel extends BaseExpandableListAdapter
{
@Override
public Object getChild(int arg0, int arg1)
{
return arg1;
}
@Override
public long getChildId(int groupPosition, int childPosition)
{
return childPosition;
}
@Override
public View getChildView(int groupPosition, int childPosition,
boolean isLastChild, View convertView, ViewGroup parent)
{
CustExpListview SecondLevelexplv = new CustExpListview(MainActivity.this);
SecondLevelexplv.setAdapter(new SecondLevelAdapter());
SecondLevelexplv.setGroupIndicator(null);
return SecondLevelexplv;
}
@Override
public int getChildrenCount(int groupPosition)
{
return 4;
}
@Override
public Object getGroup(int groupPosition)
{
return groupPosition;
}
@Override
public int getGroupCount()
{
return 1;
}
@Override
public long getGroupId(int groupPosition)
{
return groupPosition;
}
@Override
public View getGroupView(int groupPosition, boolean isExpanded,
View convertView, ViewGroup parent)
{
TextView tv = new TextView(MainActivity.this);
tv.setText("Unit Testing");
tv.setBackgroundColor(Color.BLUE);
tv.setPadding(10, 7, 7, 7);
return tv;
}
@Override
public boolean hasStableIds()
{
return true;
}
@Override
public boolean isChildSelectable(int groupPosition, int childPosition)
{
return true;
}
}
public class CustExpListview extends ExpandableListView
{
int intGroupPosition, intChildPosition, intGroupid;
public CustExpListview(Context context)
{
super(context);
}
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec)
{
widthMeasureSpec = MeasureSpec.makeMeasureSpec(960, MeasureSpec.AT_MOST);
heightMeasureSpec = MeasureSpec.makeMeasureSpec(600, MeasureSpec.AT_MOST);
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}
}
public class SecondLevelAdapter extends BaseExpandableListAdapter
{
@Override
public Object getChild(int groupPosition, int childPosition)
{
return childPosition;
}
@Override
public long getChildId(int groupPosition, int childPosition)
{
return childPosition;
}
@Override
public View getChildView(int groupPosition, int childPosition,
boolean isLastChild, View convertView, ViewGroup parent)
{
TextView tv = new TextView(MainActivity.this);
tv.setText("Campaign Page should not be null");
tv.setPadding(15, 5, 5, 5);
tv.setBackgroundColor(Color.RED);
tv.setLayoutParams(new ListView.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
return tv;
}
@Override
public int getChildrenCount(int groupPosition)
{
return 2;
}
@Override
public Object getGroup(int groupPosition)
{
return groupPosition;
}
@Override
public int getGroupCount()
{
return 1;
}
@Override
public long getGroupId(int groupPosition)
{
return groupPosition;
}
@Override
public View getGroupView(int groupPosition, boolean isExpanded,
View convertView, ViewGroup parent)
{
TextView tv = new TextView(MainActivity.this);
tv.setText("Get Campaign");
tv.setPadding(12, 7, 7, 7);
tv.setBackgroundColor(Color.CYAN);
return tv;
}
@Override
public boolean hasStableIds() {
// TODO Auto-generated method stub
return true;
}
@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
// TODO Auto-generated method stub
return true;
}
}
}
은 내가 고유 한 이름과 다른 색상을 가지고 트리의 각각 두 번째와 자식 노드를 원한다.
무엇의 노드입니까? 귀하의 질문은 명확하지 않습니다. –
나무의 노드. 충고에 감사하다. 내 질문 업데이트 –