5
मैंने एक पेड़ को दो विस्तारणीय सूची दृश्य के रूप में बनाया है, उन वस्तुओं में से एक जिनमें बहुत से बच्चे हैं (15) दूसरों के मुकाबले ज्यादा, उनके सभी बच्चे नहीं दिखाते हैं।यदि सूची बहुत बड़ी है तो एंड्रॉइड डबल विस्तार योग्य सूचीदृश्य आइटम छुपाता है
_ ______
+|_______|
_______
+|_______|
_______
|_______|
_______
|_______|
...
...
_______
|_______| // 11-th item
_______ // 12-th item can be seen a little and it-s clickable
_______
+|_______|
_______
+|_______|
...
...
_______
+|_______|
12 वीं आइटम के बाद सूची में कटौती की जाती है। मैंने सूची के आकार पर कोई बाधा नहीं डाली है। कोई विचार क्यों ऐसा होता है? धन्यवाद!
EDIT यह एफआईआर विस्तार योग्य सूची के लिए कोड है।
<ExpandableListView android:layout_width="fill_parent" android:id="@+id/ParentLevel"
android:groupIndicator="@null" android:choiceMode="singleChoice"
android:layout_height="fill_parent"
android:layout_above="@id/button_layout"
android:paddingRight="5dp">
अन्य sublist एडाप्टर getView() विधि में जुड़ जाते हैं।
कोड उदाहरण
//MainActivity.java
public class MainActivity extends Activity implements OnChildClickListener {
ExpandableListView elv;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// QUI SOTTO
Tree root = new Tree("root", 123);
for (int i = 0; i < 3; i++) {
Tree firstLevel = new Tree(("firstLevel" + i), i);
for (int j = 0; j < 6; j++) {
Tree secondLevel = new Tree("secondLevel" + j, j);
for (int z = 0; z < 27; z++) {
Tree thirdLevel = new Tree("thirdLevel" + z, z);
secondLevel.addChild(thirdLevel);
}
firstLevel.addChild(secondlevel);
}
root.addChild(firstLevel);
}
elv = new ExpandableListView(this);
final TreeAdapter treeAdapter = new TreeAdapter(this, root, this);
elv.setAdapter(treeAdapter);
elv.setChoiceMode(ExpandableListView.CHOICE_MODE_SINGLE);
elv.setOnGroupClickListener(new ExpandableListView.OnGroupClickListener() {
@Override
public boolean onGroupClick(ExpandableListView parent, View v,
int groupPosition, long id) {
for (int i = 0; i < treeAdapter.getGroupCount(); i++) {
elv.collapseGroup(i);
}
elv.expandGroup(groupPosition);
return true;
}
});
setContentView(elv);
elv.expandGroup(0);
Entry e = treeAdapter.lsfirst[0];
e.cls.expandGroup(1);
treeAdapter.selectedClass = 33;
}
TreeAdapter.java
public class TreeAdapter extends BaseExpandableListAdapter {
final static String TAG = TreeAdapter.class.getSimpleName();
static public Integer selectedClass = null;
static int CHILD_PADDING;
static float TEXT_SIZE;
private Tree tree;
private OnChildClickListener lst;
final private Context context;
class Entry{
final CustExpListview cls;
final SecondLevelAdapter sadtp;
public Entry(CustExpListview cls, SecondLevelAdapter sadtp) {
this.cls = cls;
this.sadtp = sadtp;
}
}
Entry[] lsfirst;
public TreeAdapter(MainActivity ctx, Tree tree, OnChildClickListener lst){
this.context = ctx;
this.tree = tree;
this.lst = lst;
TEXT_SIZE = 35;
CHILD_PADDING = 40;
lsfirst = new Entry[tree.getChilds().size()];
for(int i=0; i<tree.getChilds().size();i++){
CustExpListview SecondLevelexplv = new CustExpListview(context);
SecondLevelAdapter adp = new
SecondLevelAdapter(tree.getChilds().get(i));
SecondLevelexplv.setAdapter(adp);
SecondLevelexplv.setGroupIndicator(null);
SecondLevelexplv.setOnChildClickListener(lst);// add listener
lsfirst[i] = new Entry(SecondLevelexplv, adp);
}
}
@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){
//LISTA DI secondlevel
return lsfirst[groupPosition].cls;
}
@Override
public int getChildrenCount(int groupPosition){
return 1;
}
@Override
public Object getGroup(int groupPosition) {
return groupPosition;
}
@Override
public int getGroupCount() {
return tree.getChilds().size();
}
@Override
public long getGroupId(int groupPosition) {
return tree.getChilds().get(groupPosition).getId();
}
@Override
public View getGroupView(int groupPosition, boolean isExpanded,
View convertView, ViewGroup parent){
//firstlevel
TextView tv = new TextView(context);
tv.setText(tree.getChilds().get(groupPosition).getName());
tv.setPadding(3, 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);
this.setSelector(R.drawable.divider_gray);
}
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{
Tree tree2;
public SecondLevelAdapter(Tree tr) {
this.tree2 = tr;
}
//Returns the id of the selected class
@Override
public Object getChild(int groupPosition, int childPosition) {
return tree2.getChilds().get(groupPosition).getChilds().get(childPosition).getId();
}
@Override
public long getChildId(int groupPosition, int childPosition) {
return tree2.getChilds().get(groupPosition).getChilds().get(childPosition).getId();
}
@Override
public View getChildView(int groupPosition, int childPosition,
boolean isLastChild, View convertView, ViewGroup parent) {
//thirdlevel
TextView tv = new TextView(context);
tv.setText(tree2.getChilds().get(groupPosition).getChilds().get(childPosition).getName());
if(selectedClass!=null && selectedClass ==tree2.getChilds().get(groupPosition).getChilds().get(childPosition).getId()){
tv.setBackgroundResource(R.drawable.divider_gray);
}
tv.setPadding(2*CHILD_PADDING, 5, 300, 5);
return tv;
}
@Override
public int getChildrenCount(int groupPosition){
return tree2.getChilds().get(groupPosition).getChilds().size();
}
@Override
public Object getGroup(int groupPosition) {
return groupPosition;
}
@Override
public int getGroupCount() {
return tree2.getChilds().size();
}
@Override
public long getGroupId(int groupPosition) {
return groupPosition;
}
@Override
public View getGroupView(int groupPosition, boolean isExpanded,
View convertView, ViewGroup parent)
{// secondlevel
TextView tv = new TextView(context);
tv.setText(tree2.getChilds().get(groupPosition).getName());
tv.setPadding(CHILD_PADDING, 7, 200, 7);
return tv;
}
@Override
public boolean hasStableIds() {
return true;
}
@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
return true;
}
}
}
Tree.java
public final class Tree {
final static String TAG=Tree.class.getSimpleName();
final private String name;
final private int id;
private Tree parent;
private LinkedList<Tree> childs = new LinkedList<Tree>();
public Tree(String name, int id) {
parent = null;
this.name = name;
this.id = id;
}
public void addChild(Tree child){
child.parent = this;
childs.add(child);
}
public int getId() {
return id;
}
public String getName() {
return name;
}
public Tree getParent() {
return parent;
}
public LinkedList<Tree> getChilds() {
return childs;
}
@Override
public String toString() {
Iterator<Tree> iter = childs.iterator();
String childs = "[";
while(iter.hasNext()){
Tree ch = iter.next();
childs = childs.concat(ch+",");
}
childs = childs.concat("]");
return name + " "+ id + childs;
}
}
क्या आप अपनी लेआउट एक्सएमएल फाइलों को साझा कर सकते हैं? धन्यवाद। – UgglyNoodle
हाय, मैंने कोड जोड़ा, अगर आप कोशिश कर सकते हैं और क्या देखते हैं, तो इसे 26 बच्चों को दिखाना है, लेकिन यह केवल 21 दिखाता है और दूसरे स्तर के अन्य सभी बच्चों को गायब कर देता है ... मैं इस व्यवहार को समझ नहीं पा रहा हूं ... धन्यवाद – linnal