我已经设置了一个列表视图我从Web获取了一些数据然后调用我的方法handleData来使用数据并将其放在我的列表视图中但是即使我已经检索了数据并且调用了handleData，我也没有调用getView。这是我的代码，我把一堆日志语句放在一起，看看它有多远。
private void handleData( LinkedHashMap<String, List<String>> data) {
Log.i(TAG, "handle data called");
ArrayList<String> myKeys = new ArrayList<>(data.keySet());
String[] desiredOrder = {"Entrée", "Entree"};
int putPosition = 0;
for (String currentString : desiredOrder) {
for (int j = 0; j < myKeys.size(); j++) {
if (myKeys.get(j).equals(currentString)) {
myKeys.remove(j);
myKeys.add(putPosition, currentString);
putPosition++;
}
}
}
LinkedHashMap<String, List<String>> linkedHashMap = new LinkedHashMap<String, List<String>>();
for (int i = 0 ; i < myKeys.size() ; i++) {
linkedHashMap.put(myKeys.get(i), data.get(myKeys.get(i)));
}
mLinkedHashMap = linkedHashMap;
Log.i(TAG, mLinkedHashMap + "");
mHeaderListView = (HeaderListView)findViewById(R.id.HeaderListView_MainActivity);
mHeaderListView.setAdapter(new SectionAdapter() {
@Override
public int numberOfSections() {
return mLinkedHashMap.keySet().toArray().length;
}
@Override
public int numberOfRows(int section) {
if(section >=0){
String sectionKey = (String)mLinkedHashMap.keySet().toArray()[section];
int numOfRows = mLinkedHashMap.get(sectionKey).size();
return numOfRows;
}else{
return 0;
}
}
@Override
public boolean hasSectionHeaderView(int section) {
return true;
}
@Override
public View getRowView(int section, int row, View convertView, ViewGroup parent) {
Log.i(TAG, "GOT HERE");
ViewHolder holder = null;
if (convertView == null) {
holder = new ViewHolder();
LayoutInflater mLayoutInflater = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = mLayoutInflater.inflate(R.layout.item_cell_view, parent, false);
holder.textView = (TextView)convertView.findViewById(R.id.text);
convertView.setTag(holder);
} else {
holder = (ViewHolder)convertView.getTag();
}
String sectionKey = (String)mLinkedHashMap.keySet().toArray()[section];
holder.textView.setText(mLinkedHashMap.get(sectionKey).get(row));
return convertView;
}
@Override
public Object getRowItem(int section, int row) {
// return ((String[])mLinkedHashMap.keySet().toArray()[section])[row];
return mLinkedHashMap.keySet().toArray()[section];
}
@Override
public View getSectionHeaderView(int section, View convertView,
ViewGroup parent) {
ViewHolder holder = null;
LayoutInflater mLayoutInflater = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
if (convertView == null) {
holder = new ViewHolder();
convertView = mLayoutInflater.inflate(R.layout.header_cell_view, parent, false);
holder.textView = (TextView)convertView.findViewById(R.id.textSeparator);
convertView.setBackgroundColor((colorBar));
convertView.setTag(holder);
} else {
holder = (ViewHolder)convertView.getTag();
}
holder.textView.setText((String)(mLinkedHashMap.keySet().toArray()[section]));
return convertView;
}
@Override
public void onRowItemClick(AdapterView<?> parent, View view, int section, int row, long id) {
super.onRowItemClick(parent, view, section, row, id);
String sectionName = getRowItem(section, row).toString();
String itemText = mLinkedHashMap.get(sectionName).get(row);
Toast.makeText(DiningItemsActivity.this, "Section " + section + " Row " + row + "Name: " + itemText,
Toast.LENGTH_SHORT).show();
}
});
}
public static class ViewHolder {
public TextView textView;
}
我没有看到GOT HEREm，但我看到我的数据充满了数据并且没有调用处理数据？
不确定为什么会发生这种情况我在TabHost中有这一切，如果我这样设置
myTabHost.setCurrentTab(1);
或者
myTabHost.setCurrentTab(2);
我看到了我的数据，但是当它不存在或设置为此
时myTabHost.setCurrentTab(0);
我看不到任何数据我和GOT在这里没有被称为我很困惑。
这是适配器
部分public abstract class SectionAdapter extends BaseAdapter implements OnItemClickListener {
private int mCount = -1;
public abstract int numberOfSections();
public abstract int numberOfRows(int section);
public abstract View getRowView(int section, int row, View convertView, ViewGroup parent);
public abstract Object getRowItem(int section, int row);
public boolean hasSectionHeaderView(int section) {
return false;
}
public View getSectionHeaderView(int section, View convertView, ViewGroup parent) {
return null;
}
public Object getSectionHeaderItem(int section) {
return null;
}
public int getRowViewTypeCount() {
return 1;
}
public int getSectionHeaderViewTypeCount() {
return 1;
}
/**
* Must return a value between 0 and getRowViewTypeCount() (excluded)
*/
public int getRowItemViewType(int section, int row) {
return 0;
}
/**
* Must return a value between 0 and getSectionHeaderViewTypeCount() (excluded, if > 0)
*/
public int getSectionHeaderItemViewType(int section) {
return 0;
}
@Override
/**
* Dispatched to call onRowItemClick
*/
public final void onItemClick(AdapterView<?> parent, View view, int position, long id) {
onRowItemClick(parent, view, getSection(position), getRowInSection(position), id);
}
public void onRowItemClick(AdapterView<?> parent, View view, int section, int row, long id) {
}
@Override
/**
* Counts the amount of cells = headers + rows
*/
public final int getCount() {
if (mCount < 0) {
mCount = numberOfCellsBeforeSection(numberOfSections());
}
return mCount;
}
@Override
public boolean isEmpty() {
return getCount() == 0;
}
@Override
/**
* Dispatched to call getRowItem or getSectionHeaderItem
*/
public final Object getItem(int position) {
int section = getSection(position);
if (isSectionHeader(position)) {
if (hasSectionHeaderView(section)) {
return getSectionHeaderItem(section);
}
return null;
}
return getRowItem(section, getRowInSection(position));
}
@Override
public long getItemId(int position) {
return position;
}
@Override
/**
* Dispatched to call getRowView or getSectionHeaderView
*/
public final View getView(int position, View convertView, ViewGroup parent) {
int section = getSection(position);
if (isSectionHeader(position)) {
if (hasSectionHeaderView(section)) {
return getSectionHeaderView(section, convertView, parent);
}
return null;
}
return getRowView(section, getRowInSection(position), convertView, parent);
}
/**
* Returns the section number of the indicated cell
*/
protected int getSection(int position) {
int section = 0;
int cellCounter = 0;
while (cellCounter <= position && section <= numberOfSections()) {
cellCounter += numberOfCellsInSection(section);
section++;
}
return section - 1;
}
/**
* Returns the row index of the indicated cell Should not be call with
* positions directing to section headers
*/
protected int getRowInSection(int position) {
int section = getSection(position);
int row = position - numberOfCellsBeforeSection(section);
if (hasSectionHeaderView(section)) {
return row - 1;
} else {
return row;
}
}
/**
* Returns true if the cell at this index is a section header
*/
protected boolean isSectionHeader(int position) {
int section = getSection(position);
return hasSectionHeaderView(section) && numberOfCellsBeforeSection(section) == position;
}
/**
* Returns the number of cells (= headers + rows) before the indicated
* section
*/
protected int numberOfCellsBeforeSection(int section) {
int count = 0;
for (int i = 0; i < Math.min(numberOfSections(), section); i++) {
count += numberOfCellsInSection(i);
}
return count;
}
private int numberOfCellsInSection(int section) {
return numberOfRows(section) + (hasSectionHeaderView(section) ? 1 : 0);
}
@Override
public void notifyDataSetChanged() {
mCount = numberOfCellsBeforeSection(numberOfSections());
super.notifyDataSetChanged();
}
@Override
public void notifyDataSetInvalidated() {
mCount = numberOfCellsBeforeSection(numberOfSections());
super.notifyDataSetInvalidated();
}
@Override
/**
* Dispatched to call getRowItemViewType or getSectionHeaderItemViewType
*/
public final int getItemViewType(int position) {
int section = getSection(position);
if (isSectionHeader(position)) {
return getRowViewTypeCount() + getSectionHeaderItemViewType(section);
} else {
return getRowItemViewType(section, getRowInSection(position));
}
}
@Override
/**
* Dispatched to call getRowViewTypeCount and getSectionHeaderViewTypeCount
*/
public final int getViewTypeCount() {
return getRowViewTypeCount() + getSectionHeaderViewTypeCount();
}
@Override
/**
* By default, disables section headers
*/
public boolean isEnabled(int position) {
return (disableHeaders() || !isSectionHeader(position)) && isRowEnabled(getSection(position), getRowInSection(position));
}
public boolean disableHeaders() {
return false;
}
public boolean isRowEnabled(int section, int row) {
return true;
}
}
先谢谢你的帮助。
答案 0 :(得分：0)
如果你重新定义了这样的getView方法：
@Override
/**
* Dispatched to call getRowView or getSectionHeaderView
*/
public final View getView(int position, View convertView, ViewGroup parent) {
Log.i(TAG, "GETVIEW \o/");
int section = getSection(position);
if (isSectionHeader(position)) {
if (hasSectionHeaderView(section)) {
return getSectionHeaderView(section, convertView, parent);
}
return null;
}
return getRowView(section, getRowInSection(position), convertView, parent);
}
应该调用getRowView。
答案 1 :(得分：0)
当我在片段中使用listView时，我遇到过这种情况。
确保您的片段完全相同的片段。这意味着片段堆栈应始终相同 - 没有新的片段。
您可以使用FragmentTransation.hide().show().commit()切换片段
如果不这样做，新的Fragment将阻止getView（）。
但对不起，我不知道为什么......