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问题描述
谁能请帮助我如何自动扩展该集团在我的列表视图扩展,我只有一个组。有5个项目。我想自动扩展它,所以我没有点击它。我用groupExpand(0),但它不工作:(。这里是我的全code。
公共类ExpandActivity扩展ExpandableListActivity {//的String [] =行动新的String [] {
//,
//设置,
// 关于, //};
ListView控件的ListView;
TextView的txtView;
@燮pressLint(的SimpleDateFormat)
@燮pressWarnings({未登记,德precation})
公共无效的onCreate(捆绑savedInstanceState){
尝试{
super.onCreate(savedInstanceState);
的setContentView(R.layout.expand);
((ExpandableListView)的ListView).expandGroup(0); SimpleExpandableListAdapter expListAdapter =
新SimpleExpandableListAdapter(
这个,
createGroupList()//创建组列表。
R.layout.group_row,//集团项目布局XML。
新的String [] {组项目} //组项目的关键。
新的INT [] {} R.id.row_name,//每组item.-数据项下的ID进入这个TextView的。
createChildList(),// childData描述的第二级条目。
R.layout.child_row,//布局分层次项(第二级)。
新的String [] {子项} //在childData键映射到相应显示。
新的INT [] {R.id.grp_child} //数据在按键上方进入这些TextViews。
);
setListAdapter(expListAdapter); //设置在列表中的适配器。 }赶上(例外五){
的System.out.println(Errrr ++++ e.getMessage());
}
}/ *创建HashMap中的行* /
@燮pressWarnings(未登记)
私人列表createGroupList(){
ArrayList的结果=新的ArrayList();
的for(int i = 0; I< 1; ++ I){// 15组........
HashMap的M =新的HashMap();
m.put(「本集团项目,更新); //键和它的价值。 result.add(米);
((ExpandableListView)的ListView).expandGroup(0); }
回报(列表)的结果;}/ *肌酸HashMap中为孩子* /
@燮pressWarnings(未登记)
私人列表createChildList(){ ArrayList的结果=新的ArrayList();
对(INT I = 0; I&。1 ++ⅰ){//这-15是(这是十五年)基团的数目
/ *每组需要彼此的HashMap,在这里,每个组我们有3个亚组* /
ArrayList的secList =新的ArrayList();
对于(INT N = 0; N< 1; N ++){
HashMap的孩子=新的HashMap();
child.put(子项,DILC);
secList.add(小孩);
}
result.add(secList);
ArrayList的secList2 =新的ArrayList();
对于(INT N = 0; N< 1; N ++){
HashMap的孩子=新的HashMap();
child.put(子项,OVRCD);
secList.add(小孩);
}
result.add(secList2);
ArrayList的secList3 =新的ArrayList();
对于(INT N = 0; N< 1; N ++){
HashMap的孩子=新的HashMap();
child.put(子项,UPD信息);
secList.add(小孩);
}
result.add(secList3);ArrayList的secList4 =新的ArrayList();
对于(INT N = 0; N< 1; N ++){
HashMap的孩子=新的HashMap();
child.put(子项,UP系统);
secList.add(小孩);
}
result.add(secList4); ArrayList的secList5 =新的ArrayList();
对于(INT N = 0; N< 1; N ++){
HashMap的孩子=新的HashMap();
child.put(子项,所有更新);
secList.add(小孩);
}
result.add(secList5); }
返回结果;
}
公共无效onContentChanged(){
的System.out.println(onContentChanged);
super.onContentChanged();
}/ *调用此函数对每个孩子的点击* /
@燮pressLint(NewApi)
公共布尔onChildClick(ExpandableListView父视图V,INT groupPosition,诠释childPosition,长ID){
ExpandableListAdapter ADAP = parent.getExpandableListAdapter();
INT GP =(int)的adap.getGroupId(groupPosition);
INT CP =(int)的adap.getChildId(groupPosition,childPosition);
如果(GP == 0){
开关(CP){
情况下0:
意向意图=新意图(getApplicationContext()
RssTabsActivity.class);
startActivity(意向);
overridePendingTransition(R.anim.right_slide_in,R.anim.right_slide_in);
打破; 情况1:
意图intent1 =新意图(getApplicationContext()
OVRCD.class);
startActivity(intent1);
overridePendingTransition(R.anim.right_slide_in,R.anim.right_slide_in);
打破; 案例2:
意图intent2 =新意图(getApplicationContext()
UPDInfo.class);
startActivity(intent2);
overridePendingTransition(R.anim.right_slide_in,R.anim.right_slide_in);
打破;
案例3:
意图intent3 =新意图(getApplicationContext()
UPSystem.class);
startActivity(intent3);
overridePendingTransition(R.anim.right_slide_in,R.anim.right_slide_in);
打破; 情况4:
意图intent4 =新意图(getApplicationContext()
ALLUPD.class);
startActivity(intent4);
overridePendingTransition(R.anim.right_slide_in,R.anim.right_slide_in);
打破; }
}否则如果(GP == 1){
开关(CP){
情况下0:
意向意图=新意图(getApplicationContext()
RssTabsActivity.class);
startActivity(意向);
overridePendingTransition(R.anim.right_slide_in,R.anim.right_slide_in);
打破;
情况1:
意图intent1 =新意图(getApplicationContext()
RssTabsActivity.class);
startActivity(intent1);
overridePendingTransition(R.anim.right_slide_in,R.anim.right_slide_in);
打破;
案例2:
意图intent2 =新意图(getApplicationContext()
RssTabsActivity.class);
startActivity(intent2);
overridePendingTransition(R.anim.right_slide_in,R.anim.right_slide_in);
打破;
案例3:
意图intent3 =新意图(getApplicationContext()
RssTabsActivity.class);
startActivity(intent3);
overridePendingTransition(R.anim.right_slide_in,R.anim.right_slide_in);
打破;
情况4:
意图intent4 =新意图(getApplicationContext()
RssTabsActivity.class);
startActivity(intent4);
overridePendingTransition(R.anim.right_slide_in,R.anim.right_slide_in);
打破;
}
} 返回true;
};
@燮pressWarnings(空)
公共查看getChildView(INT groupPosition,诠释childPosition,布尔isLastChild,查看convertView,父母的ViewGroup){ ExpandableListView expView = getExpandableListView();
ContextThemeWrapper语境= NULL;
expView.setChildIndicator(context.getResources()。getDrawable(
R.drawable.arrow_right));
expView.setChildDivider(getResources()getDrawable(R.color.grey)); expView.setDividerHeight(2);
回到父母; }
/ *调用此函数上展开组* /
公共无效onGroupExpand(INT groupPosition){
尝试{
的System.out.println(本集团exapanding监听=> groupPosition =+ groupPosition);
}赶上(例外五){
的System.out.println(groupPosition Errrr ++++ e.getMessage());
}}
解决方案
做的是这样的:
expList.setAdapter(mNewAdapter); 的for(int i = 0; I< mNewAdapter.getGroupCount();我++)
expList.expandGroup(ⅰ);
expList.setOnGroupClickListener(新OnGroupClickListener(){
@覆盖
公共布尔onGroupClick(ExpandableListView父母,
视图V,INT groupPosition,长ID){
返回true; //这样,膨胀器不能
//倒塌
}
});
和
< ExpandableListView
机器人:ID =@ + ID / e_lodinfo
机器人:layout_width =match_parent
机器人:layout_height =WRAP_CONTENT
机器人:滚动条=无
机器人:groupIndicator =@空
>
< / ExpandableListView>
Can anyone please help me how to automatically expand the group in my Expandable Listview, I only have one group. with 5 items. I want to expand it automatically so I don't have to click it. I used groupExpand(0), But its not working :( .Here is my full code.
public class ExpandActivity extends ExpandableListActivity {
//String[] actions = new String[] {
// "",
// "Settings",
// "About",
//};
ListView listView ;
TextView txtView;
@SuppressLint("SimpleDateFormat")
@SuppressWarnings({ "unchecked", "deprecation" })
public void onCreate(Bundle savedInstanceState) {
try{
super.onCreate(savedInstanceState);
setContentView(R.layout.expand);
((ExpandableListView) listView).expandGroup(0);
SimpleExpandableListAdapter expListAdapter =
new SimpleExpandableListAdapter(
this,
createGroupList(), // Creating group List.
R.layout.group_row, // Group item layout XML.
new String[] { "Group Item" }, // the key of group item.
new int[] { R.id.row_name }, // ID of each group item.-Data under the key goes into this TextView.
createChildList(), // childData describes second-level entries.
R.layout.child_row, // Layout for sub-level entries(second level).
new String[] {"Sub Item"}, // Keys in childData maps to display.
new int[] { R.id.grp_child} // Data under the keys above go into these TextViews.
);
setListAdapter( expListAdapter ); // setting the adapter in the list.
}catch(Exception e){
System.out.println("Errrr +++ " + e.getMessage());
}
}
/* Creating the Hashmap for the row */
@SuppressWarnings("unchecked")
private List createGroupList() {
ArrayList result = new ArrayList();
for( int i = 0 ; i < 1 ; ++i ) { // 15 groups........
HashMap m = new HashMap();
m.put( "Group Item","Updates"); // the key and it's value.
result.add( m );
((ExpandableListView) listView).expandGroup(0);
}
return (List)result;
}
/* creatin the HashMap for the children */
@SuppressWarnings("unchecked")
private List createChildList() {
ArrayList result = new ArrayList();
for( int i = 0 ; i < 1 ; ++i ) { // this -15 is the number of groups(Here it's fifteen)
/* each group need each HashMap-Here for each group we have 3 subgroups */
ArrayList secList = new ArrayList();
for( int n = 0 ; n < 1 ; n++ ) {
HashMap child = new HashMap();
child.put( "Sub Item", "DILC");
secList.add( child );
}
result.add( secList );
ArrayList secList2 = new ArrayList();
for( int n = 0 ; n < 1 ; n++ ) {
HashMap child = new HashMap();
child.put( "Sub Item", "OVRCD");
secList.add( child );
}
result.add( secList2 );
ArrayList secList3 = new ArrayList();
for( int n = 0 ; n < 1 ; n++ ) {
HashMap child = new HashMap();
child.put( "Sub Item", "UPD Information");
secList.add( child );
}
result.add( secList3 );
ArrayList secList4 = new ArrayList();
for( int n = 0 ; n < 1 ; n++ ) {
HashMap child = new HashMap();
child.put( "Sub Item", "UP System");
secList.add( child );
}
result.add( secList4 );
ArrayList secList5 = new ArrayList();
for( int n = 0 ; n < 1 ; n++ ) {
HashMap child = new HashMap();
child.put( "Sub Item", "All Updates");
secList.add( child );
}
result.add( secList5 );
}
return result;
}
public void onContentChanged () {
System.out.println("onContentChanged");
super.onContentChanged();
}
/* This function is called on each child click */
@SuppressLint("NewApi")
public boolean onChildClick( ExpandableListView parent, View v, int groupPosition,int childPosition,long id) {
ExpandableListAdapter adap = parent.getExpandableListAdapter();
int gp = (int) adap.getGroupId(groupPosition);
int cp = (int) adap.getChildId(groupPosition, childPosition);
if (gp == 0) {
switch (cp) {
case 0:
Intent intent = new Intent(getApplicationContext(),
RssTabsActivity.class);
startActivity(intent);
overridePendingTransition(R.anim.right_slide_in, R.anim.right_slide_in);
break;
case 1:
Intent intent1 = new Intent(getApplicationContext(),
OVRCD.class);
startActivity(intent1);
overridePendingTransition(R.anim.right_slide_in, R.anim.right_slide_in);
break;
case 2:
Intent intent2 = new Intent(getApplicationContext(),
UPDInfo.class);
startActivity(intent2);
overridePendingTransition(R.anim.right_slide_in, R.anim.right_slide_in);
break;
case 3:
Intent intent3 = new Intent(getApplicationContext(),
UPSystem.class);
startActivity(intent3);
overridePendingTransition(R.anim.right_slide_in, R.anim.right_slide_in);
break;
case 4:
Intent intent4 = new Intent(getApplicationContext(),
ALLUPD.class);
startActivity(intent4);
overridePendingTransition(R.anim.right_slide_in, R.anim.right_slide_in);
break;
}
} else if (gp == 1) {
switch (cp) {
case 0:
Intent intent = new Intent(getApplicationContext(),
RssTabsActivity.class);
startActivity(intent);
overridePendingTransition(R.anim.right_slide_in, R.anim.right_slide_in);
break;
case 1:
Intent intent1 = new Intent(getApplicationContext(),
RssTabsActivity.class);
startActivity(intent1);
overridePendingTransition(R.anim.right_slide_in, R.anim.right_slide_in);
break;
case 2:
Intent intent2 = new Intent(getApplicationContext(),
RssTabsActivity.class);
startActivity(intent2);
overridePendingTransition(R.anim.right_slide_in, R.anim.right_slide_in);
break;
case 3:
Intent intent3 = new Intent(getApplicationContext(),
RssTabsActivity.class);
startActivity(intent3);
overridePendingTransition(R.anim.right_slide_in, R.anim.right_slide_in);
break;
case 4:
Intent intent4 = new Intent(getApplicationContext(),
RssTabsActivity.class);
startActivity(intent4);
overridePendingTransition(R.anim.right_slide_in, R.anim.right_slide_in);
break;
}
}
return true;
};
@SuppressWarnings("null")
public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View convertView, ViewGroup parent){
ExpandableListView expView = getExpandableListView();
ContextThemeWrapper context = null;
expView.setChildIndicator(context.getResources().getDrawable(
R.drawable.arrow_right));
expView.setChildDivider(getResources().getDrawable(R.color.grey));
expView.setDividerHeight(2);
return parent;
}
/* This function is called on expansion of the group */
public void onGroupExpand (int groupPosition) {
try{
System.out.println("Group exapanding Listener => groupPosition = " + groupPosition);
}catch(Exception e){
System.out.println(" groupPosition Errrr +++ " + e.getMessage());
}
}
解决方案
do this way:
expList.setAdapter(mNewAdapter);
for (int i = 0; i < mNewAdapter.getGroupCount(); i++)
expList.expandGroup(i);
expList.setOnGroupClickListener(new OnGroupClickListener() {
@Override
public boolean onGroupClick(ExpandableListView parent,
View v, int groupPosition, long id) {
return true; // This way the expander cannot be
// collapsed
}
});
and:
<ExpandableListView
android:id="@+id/e_lodinfo"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:scrollbars="none"
android:groupIndicator="@null"
>
</ExpandableListView>
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