3レベル以上の拡張可能なリストビューを表示する方法
3レベル以上の拡張可能なリストビューを表示する方法、3レベルの拡張可能なサンプルのみを取得しています。
これを参照する： レベル拡張可能リスト
この例では、ParentLevel getChildViewのBaseExpandableListAdapterメソッドにもう1つのExpandableリストを追加しています。
CustExpListview SecondLevelexplv = new CustExpListview(Home.this);
SecondLevelexplv.setAdapter(new SecondLevelAdapter());
SecondLevelexplv.setGroupIndicator(null);
return SecondLevelexplv;
同様に、getChildViewのSecondLevelAdapterメソッドにもう1つ展開可能なリストを追加しています。
そのWorking But Viewは、3レベルの拡張可能なリストビューのように適切ではありません。そして私はこれを読みました：
-level-expandable-list-view-with-swipe-feature
multi-level-expandablelistview-in-Android
issue-with-expanding-multi-level-expandablelistview
Androidのマルチレベルエキスパンドディスプレイの適切な例をガイドラインまたは共有してください。
ありがとう、
私は解決策を見つけて、すべてをアップロードしていますJava classだからすべてをチェックJavaまたはUはチェックできます this ：
1：MainActivity.Java
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Object obj = new Object();
obj.children = new ArrayList<Object>();
for(int i = 0;i<Constant.state.length;i++)
{
Object root = new Object();
root.title = Constant.state[i];
root.children = new ArrayList<Object>();
for(int j=0;j<Constant.parent[i].length;j++)
{
Object parent = new Object();
parent.title=Constant.parent[i][j];
parent.children = new ArrayList<Object>();
for(int k=0;k<Constant.child[i][j].length;k++)
{
Object child = new Object();
child.title =Constant.child[i][j][k];
parent.children.add(child);
}
root.children.add(parent);
}
obj.children.add(root);
}
if (!obj.children.isEmpty()) {
final ExpandableListView elv = (ExpandableListView) findViewById(R.id.expList);
elv.setOnGroupClickListener(new ExpandableListView.OnGroupClickListener() {
@Override
public boolean onGroupClick(ExpandableListView parent, View v,
int groupPosition, long id) {
return true; /* or false depending on what you need */;
}
});
ExpandableListView.OnGroupClickListener grpLst = new ExpandableListView.OnGroupClickListener() {
@Override
public boolean onGroupClick(ExpandableListView eListView, View view, int groupPosition,
long id) {
return true/* or false depending on what you need */;
}
};
ExpandableListView.OnChildClickListener childLst = new ExpandableListView.OnChildClickListener() {
@Override
public boolean onChildClick(ExpandableListView eListView, View view, int groupPosition,
int childPosition, long id) {
return true/* or false depending on what you need */;
}
};
ExpandableListView.OnGroupExpandListener grpExpLst = new ExpandableListView.OnGroupExpandListener() {
@Override
public void onGroupExpand(int groupPosition) {
}
};
final RootAdapter adapter = new RootAdapter(this, obj, grpLst, childLst, grpExpLst);
elv.setAdapter(adapter);
}
}
}
2：Object.Java
public class Object {
public String title; // use getters and setters instead
public List<Object> children; // same as above
public Object() {
children = new ArrayList<Object>();
}
}
3：RootAdapter.Java
public class RootAdapter extends BaseExpandableListAdapter {
private Object root;
private final LayoutInflater inflater;
public class Entry {
public final CustExpListview cls;
public final SecondLevelAdapter sadpt;
public Entry(CustExpListview cls, SecondLevelAdapter sadpt) {
this.cls = cls;
this.sadpt = sadpt;
}
}
public Entry[] lsfirst;
public RootAdapter(Context context, Object root, ExpandableListView.OnGroupClickListener grpLst,
ExpandableListView.OnChildClickListener childLst, ExpandableListView.OnGroupExpandListener grpExpLst) {
this.root = root;
this.inflater = LayoutInflater.from(context);
lsfirst = new Entry[root.children.size()];
for (int i = 0; i < root.children.size(); i++) {
final CustExpListview celv = new CustExpListview(context);
SecondLevelAdapter adp = new SecondLevelAdapter(root.children.get(i),context);
celv.setAdapter(adp);
celv.setGroupIndicator(null);
celv.setOnChildClickListener(childLst);
celv.setOnGroupClickListener(grpLst);
celv.setOnGroupExpandListener(grpExpLst);
lsfirst[i] = new Entry(celv, adp);
}
}
@Override
public Object getChild(int groupPosition, int childPosition) {
return root.children.get(groupPosition);
}
@Override
public long getChildId(int groupPosition, int childPosition) {
return childPosition;
}
@Override
public View getChildView(int groupPosition, int childPosition, boolean isLastChild,
View convertView, ViewGroup parent) {
// second level list
return lsfirst[groupPosition].cls;
}
@Override
public int getChildrenCount(int groupPosition) {
return 1;
}
@Override
public Object getGroup(int groupPosition) {
return root.children.get(groupPosition);
}
@Override
public int getGroupCount() {
return root.children.size();
}
@Override
public long getGroupId(int groupPosition) {
return groupPosition;
}
@Override
public View getGroupView(int groupPosition, boolean isExpanded, View convertView,
ViewGroup parent) {
// first level
View layout = convertView;
GroupViewHolder holder;
final Object item = (Object) getGroup(groupPosition);
if (layout == null) {
layout = inflater.inflate(R.layout.item_root, parent, false);
holder = new GroupViewHolder();
holder.title = (TextView) layout.findViewById(R.id.itemRootTitle);
layout.setTag(holder);
} else {
holder = (GroupViewHolder) layout.getTag();
}
holder.title.setText(item.title.trim());
return layout;
}
private static class GroupViewHolder {
TextView title;
}
@Override
public boolean hasStableIds() {
return true;
}
@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
return true;
}
}
4：SecondLevelAdapter.Java
public class SecondLevelAdapter extends BaseExpandableListAdapter {
public Object child;
Context mContext;
LayoutInflater inflater;
public SecondLevelAdapter(Object child,Context context) {
this.child = child;
this.mContext=context;
inflater = LayoutInflater.from(mContext);
}
@Override
public Object getChild(int groupPosition, int childPosition) {
return child.children.get(groupPosition).children.get(childPosition);
}
@Override
public long getChildId(int groupPosition, int childPosition) {
return childPosition;
}
// third level
@Override
public View getChildView(int groupPosition, int childPosition, boolean isLastChild,
View convertView, ViewGroup parent) {
View layout = convertView;
final Object item = (Object) getChild(groupPosition, childPosition);
ChildViewHolder holder;
if (layout == null) {
layout = inflater.inflate(R.layout.item_child, parent, false);
holder = new ChildViewHolder();
holder.title = (TextView) layout.findViewById(R.id.itemChildTitle);
layout.setTag(holder);
} else {
holder = (ChildViewHolder) layout.getTag();
}
holder.title.setText(item.title.trim());
return layout;
}
@Override
public int getChildrenCount(int groupPosition) {
return child.children.get(groupPosition).children.size();
}
@Override
public Object getGroup(int groupPosition) {
return child.children.get(groupPosition);
}
@Override
public int getGroupCount() {
return child.children.size();
}
@Override
public long getGroupId(int groupPosition) {
return groupPosition;
}
// Second level
@Override
public View getGroupView(int groupPosition, boolean isExpanded, View convertView,
ViewGroup parent) {
View layout = convertView;
ViewHolder holder;
final Object item = (Object) getGroup(groupPosition);
if (layout == null) {
layout = inflater.inflate(R.layout.item_parent, parent, false);
holder = new ViewHolder();
holder.title = (TextView) layout.findViewById(R.id.itemParentTitle);
layout.setTag(holder);
} else {
holder = (ViewHolder) layout.getTag();
}
holder.title.setText(item.title.trim());
return layout;
}
@Override
public void registerDataSetObserver(DataSetObserver observer) {
super.registerDataSetObserver(observer);
}
@Override
public void unregisterDataSetObserver(DataSetObserver observer) {
Log.d("SecondLevelAdapter", "Unregistering observer");
if (observer != null) {
super.unregisterDataSetObserver(observer);
}
}
@Override
public boolean hasStableIds() {
return true;
}
@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
return true;
}
private static class ViewHolder {
TextView title;
}
private static class ChildViewHolder {
TextView title;
}
}
5 Constant.Java
public class Constant {
static String[] state = {"A","B","C"};
static String[][] parent = {
{"aa","bb","cc","dd","ee"},
{"ff","gg","hh","ii","jj"},
{"kk","ll","mm","nn","oo"}
};
static String[][][] child = {
{
{"aaa","aab","aac","aad","aae"},
{"bba","bbb","bbc","bbd","bbe"},
{"cca","ccb","ccc","ccd","cce","ccf","ccg"},
{"dda","ddb","dddc","ddd","dde","ddf"},
{"eea","eeb","eec"}
},
{
{"ffa","ffb","ffc","ffd","ffe"},
{"gga","ggb","ggc","ggd","gge"},
{"hha","hhb","hhc","hhd","hhe","hhf","hhg"},
{"iia","iib","iic","iid","iie","ii"},
{"jja","jjb","jjc","jjd"}
},
{
{"kka","kkb","kkc","kkd","kke"},
{"lla","llb","llc","lld","lle"},
{"mma","mmb","mmc","mmd","mme","mmf","mmg"},
{"nna","nnb","nnc","nnd","nne","nnf"},
{"ooa","oob"}
}
};
}
5：item_parent.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:Android="http://schemas.Android.com/apk/res/Android"
Android:layout_width="match_parent"
Android:layout_height="wrap_content"
Android:orientation="horizontal"
Android:paddingLeft="10dp" >
<TextView
Android:id="@+id/itemParentTitle"
Android:layout_width="0dp"
Android:layout_weight="1"
Android:layout_height="wrap_content"
Android:layout_marginLeft="5dp"
Android:layout_marginRight="5dp"
Android:background="#5ccccc"
Android:padding="2dp"
Android:textColor="#006363"
Android:textSize="20sp" />
<ImageView
Android:id="@+id/itemParentImage"
Android:layout_width="wrap_content"
Android:layout_height="wrap_content" />
</LinearLayout>
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec)
{
// 999999 is a size in pixels.
// ExpandableListView requires a maximum height in order to do measurement calculations.
heightMeasureSpec = MeasureSpec.makeMeasureSpec(999999, MeasureSpec.AT_MOST);
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}
これにより、はるかに合理的な長さになります。
Expendable List Viewを使用して2番目の消耗品アダプターを作成する方法は推奨されません。プロセス全体を複雑にするために、スクロールビューと内部レイアウトを使用して異なるビューを拡大する簡単な方法があります.....
public class CustExpListview extends ExpandableListView {
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);
}
@Override
protected void onDetachedFromWindow() {
try {
super.onDetachedFromWindow();
} catch (IllegalArgumentException e) {
// TODO: Workaround for
// http://code.google.com/p/Android/issues/detail?id=22751
}
}
}