I have an ExpandableListView which is populated with some data that i retrieve from a web service. Inside a few of the child of this ExpView there are row populated by TableLayout. The problem is that i'd like to set setStretchAllColumns() to true when the width of the table is minor than screen's one; at the same time i'd like to put the table in a ScroolView if its width is greater than screen's one (to let the user scrolls through all the data in the large table).
I have tried using ViewTreeObserver but with no success.
Can you help me with some code or a tutorial or just pointing me in the right direction plz?
PS:sorry for my poor english, be patient.
I post here the source of my ExpandableListViewAdapter, it's a mess but will help you understand what i'm trying to achieve. The important methods are createTableOnUIThread and init.
public class MyExpListAdapter extends BaseExpandableListAdapter {
private final int TABLE_BORDER = 1;
private final int TABLE_TEXT_PADDING = 10;
private Context context = null;
private List<String> keyList = null;
private Map<String, List<LabelValueTable>> infoMap = null;
private LayoutInflater inflater = null;
public MyExpListAdapter(Context context, Map<String, List<LabelValueTable>> infoMap) {
this.context = context;
this.infoMap = infoMap;
this.keyList = new ArrayList<String>(infoMap.keySet());
this.inflater = (LayoutInflater) this.context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
@Override
public Object getChild(int groupPosition, int childPosition) {
return this.infoMap.get(this.keyList.get(groupPosition)).get(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) {
LabelValueTable listElement = (LabelValueTable) this.getChild(groupPosition, childPosition);
SubTableApparato table = listElement.getTable();
ViewHolder holder = null;
if (convertView == null) {
convertView = this.inflater.inflate(R.layout.cmp_ac_scheda__expview_child, null);
holder = new ViewHolder();
holder.labelvalueContainer = (LinearLayout) convertView.findViewById(R.id.cmp_expview_child__labelvalue_container);
holder.label = (TextView) convertView.findViewById(R.id.cmp_expview_child__label);
holder.value = (TextView) convertView.findViewById(R.id.cmp_expview_child__value);
holder.tableHeader = (TextView) convertView.findViewById(R.id.cmp_expview_child__tableheader);
holder.tableScroll = (HorizontalScrollView) convertView.findViewById(R.id.cmp_expview_child__scrollview);
holder.tableLayout = (TableLayout) convertView.findViewById(R.id.cmp_expview_child__tablelayout);
holder.tableLayoutScrollable = (TableLayout) convertView.findViewById(R.id.cmp_expview_child__tablelayout_scrollable);
convertView.setBackgroundResource(R.color.scheda_asset_oggetto_apparato_layout);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
// Se table è diverso da null disegno la tabella
if (table != null) {
holder.tableLayout.removeAllViewsInLayout();
holder.tableLayoutScrollable.removeAllViewsInLayout();
// Gruppo di controlli per il reset del layout
holder.tableHeader.setVisibility(View.VISIBLE);
holder.tableScroll.setVisibility(View.VISIBLE);
holder.tableLayout.setVisibility(View.VISIBLE);
holder.tableLayoutScrollable.setVisibility(View.VISIBLE);
holder.labelvalueContainer.setVisibility(View.GONE);
this.createTableOnUIThread(table, holder.tableHeader, holder.tableLayout, holder.tableLayoutScrollable);
} else {
// Altrimenti imposto i due valori label e value nelle rispettive
// textview
holder.tableHeader.setVisibility(View.GONE);
holder.tableScroll.setVisibility(View.GONE);
holder.tableLayout.setVisibility(View.GONE);
holder.tableLayoutScrollable.setVisibility(View.GONE);
holder.labelvalueContainer.setVisibility(View.VISIBLE);
holder.label.setText(((LabelValueTable) listElement).getLabelValue().getLabel());
holder.value.setText(((LabelValueTable) listElement).getLabelValue().getValue());
}
return convertView;
}
@Override
public int getChildrenCount(int groupPosition) {
return this.infoMap.get(this.keyList.get(groupPosition)).size();
}
@Override
public Object getGroup(int groupPosition) {
return this.keyList.get(groupPosition);
}
@Override
public int getGroupCount() {
return this.infoMap.size();
}
@Override
public long getGroupId(int groupPosition) {
return groupPosition;
}
@Override
public View getGroupView(int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) {
ViewHolder holder = null;
if (convertView == null) {
convertView = this.inflater.inflate(R.layout.cmp_ac_scheda__expview_group, null);
holder = new ViewHolder();
holder.tv = (TextView) convertView.findViewById(R.id.cmp_expview_group__groupname);
holder.tv.setBackgroundResource(R.color.title_bar_bg_color);
holder.tv.setTextColor(convertView.getResources().getColor(R.color.title_text_color));
holder.tv.setBackgroundResource((R.drawable.scheda_asset__groupview_bg_style));
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
holder.tv.setTypeface(null, Typeface.BOLD);
holder.tv.setText((String) getGroup(groupPosition));
return convertView;
}
@Override
public boolean hasStableIds() {
return true;
}
@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
return false;
}
private LinearLayout createFormattedCell(boolean isTabHeader, boolean isLast, String str) {
// Layout che circonda le textView necessario per disegnare il bordo
// delle celle
LinearLayout container = new LinearLayout(this.context);
container.setBackgroundColor(Color.BLACK);
if (isLast) {
container.setPadding(TABLE_BORDER, TABLE_BORDER, TABLE_BORDER, 0);
} else {
container.setPadding(TABLE_BORDER, TABLE_BORDER, 0, 0);
}
TextView textView = new TextView(this.context);
textView.setPadding(TABLE_TEXT_PADDING, TABLE_TEXT_PADDING, TABLE_TEXT_PADDING, TABLE_TEXT_PADDING);
textView.setBackgroundColor(Color.WHITE);
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.MATCH_PARENT);
textView.setLayoutParams(params);
if (isTabHeader) {
textView.setTypeface(Typeface.DEFAULT_BOLD);
textView.setGravity(Gravity.CENTER);
textView.setBackgroundColor(this.context.getResources().getColor(R.color.light_grayish_orange));
}
textView.setText(str);
container.addView(textView);
return container;
}
private void createTableRows(List<List<String>> table, TableLayout tableLayout) {
for (int i = 0; i < table.size(); i++) {
List<String> record = table.get(i);
TableRow column = new TableRow(this.context);
// If necessario per l'identificazione delle intestazioni delle
// colonne
if (i == 0) {
for (int j = 0; j < record.size(); j++) {
String cellValue = record.get(j);
// If necessario per l'inserimento del bordo destro
// sull'ultima cella
if (j == record.size() - 1) {
column.addView(this.createFormattedCell(true, true, cellValue));
} else {
column.addView(this.createFormattedCell(true, false, cellValue));
}
}
} else {
for (int j = 0; j < record.size(); j++) {
String cellValue = record.get(j);
if (j == record.size() - 1) {
column.addView(this.createFormattedCell(false, true, cellValue));
} else {
column.addView(this.createFormattedCell(false, false, cellValue));
}
}
}
tableLayout.addView(column);
}
}
private void createTableOnUIThread(SubTableApparato tableEntity, TextView tableHeader, final TableLayout tableLayout, final TableLayout tableLayoutScrollable) {
// Setto il titolo della table
tableHeader.setText(tableEntity.getTableName());
List<List<String>> table = tableEntity.getTable();
// if (table.size() != 0 && table.get(0).size() <= 3) {
// // Se la tabella è vuota setto le colonne per non superare la
// // larghezza dello schermo
// this.createTableRows(table, tableLayout);
// tableLayout.setStretchAllColumns(true);
// // tableLayout.getWidth();
// } else {
// tableLayout.setStretchAllColumns(false);
// this.createTableRows(table, tableLayoutScrollable);
// }
final TableLayout provvisorio = new TableLayout(this.context);
tableLayoutScrollable.removeAllViews();
tableLayoutScrollable.addView(provvisorio);
final TableLayout provvisorio2 = new TableLayout(this.context);
tableLayout.removeAllViews();
provvisorio2.setStretchAllColumns(true);
tableLayout.addView(provvisorio2);
this.createTableRows(table, provvisorio);
this.createTableRows(table, provvisorio2);
ViewTreeObserver observer = provvisorio.getViewTreeObserver();
observer.addOnGlobalLayoutListener(new OnGlobalLayoutListener() {
@Override
public void onGlobalLayout() {
init(provvisorio, tableLayoutScrollable);
provvisorio.getViewTreeObserver().removeGlobalOnLayoutListener(this);
}
});
ViewTreeObserver observer1 = provvisorio2.getViewTreeObserver();
observer1.addOnGlobalLayoutListener(new OnGlobalLayoutListener() {
@Override
public void onGlobalLayout() {
init(provvisorio2, tableLayout);
provvisorio2.getViewTreeObserver().removeGlobalOnLayoutListener(this);
}
});
// if (provvisorioWidth <= width) {
// provvisorio.setStretchAllColumns(true);
// tableLayout.addView(provvisorio);
// } else {
// provvisorio.setStretchAllColumns(false);
// tableLayoutScrollable.addView(provvisorio);
// }
}
protected void init(TableLayout l, TableLayout tableLayout) {
Display display = ((Activity) (this.context)).getWindowManager().getDefaultDisplay();
Point size = new Point();
display.getSize(size);
int screenWidth = size.x;
int b = l.getMeasuredWidthAndState();
Toast.makeText(this.context, "Width schermo:" + screenWidth + " Widht view:" + b, Toast.LENGTH_SHORT).show();
if (b <= screenWidth) {
tableLayout.setVisibility(View.GONE);
} else {
tableLayout.setVisibility(View.VISIBLE);
}
}
public static class ViewHolder {
// Child view
TextView label = null;
TextView value = null;
TextView tableHeader = null;
LinearLayout labelvalueContainer = null;
HorizontalScrollView tableScroll = null;
TableLayout tableLayout = null;
TableLayout tableLayoutScrollable = null;
// Group view
TextView tv = null;
}
}
