私は ArrayList を持っており、Android でヘッダーごとにすべてのデータを並べ替えてグループ化したいと考えています。Androidでどのように可能ですか? 私を助けてください。所有者から私の下にヘッダーを設定してください私とジョーマネージャー所有者からそしてリストビューにヘッダーを設定してください。Androidでそれを行う方法は？
以下の私のコード::
public class Request extends Activity {
private String assosiatetoken;
private ArrayList<All_Request_data_dto> list = new ArrayList<All_Request_data_dto>();
ListView lv;
Button back;
private Spinner spndata;
String[] reqspinner = { "Request Date", "Last Update", "Type", "Owner",
"State" };
ArrayAdapter<String> adapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.request);
assosiatetoken = MyApplication.getToken();
new doinbackground(this).execute();
back = (Button) findViewById(R.id.button1);
spndata = (Spinner) findViewById(R.id.list_all_quize_req);
adapter = new ArrayAdapter<String>(this,
android.R.layout.simple_spinner_item, reqspinner);
spndata.setAdapter(adapter);
lv = (ListView) findViewById(R.id.listrequestdata);
lv.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> a, View v, int position,
long id) {
Intent edit = new Intent(Request.this, Request_webview.class);
// edit.putExtra("Cat_url", url_link);
startActivity(edit);
}
});
spndata.setOnItemSelectedListener(new OnItemSelectedListener() {
public void onItemSelected(AdapterView<?> arg0, View arg1,
int position, long arg3) {
switch (position) {
case 0:
list = DBAdpter.requestUserData(assosiatetoken);
Collections.sort(list, byDate1);
// Collections.reverse(list);
for (int i = 0; i < list.size(); i++) {
if (list.get(i).submitDate != null) {
lv.setAdapter(new MyListAdapter(
getApplicationContext(), list));
}
}
break;
case 1:
list = DBAdpter.requestUserData(assosiatetoken);
Collections.sort(list, byDate);
for (int i = 0; i < list.size(); i++) {
if (list.get(i).lastModifiedDate != null) {
lv.setAdapter(new MyListAdapter(
getApplicationContext(), list));
}
}
break;
case 2:
list = DBAdpter.requestUserData(assosiatetoken);
Collections.sort(list, byDate3);
// Collections.reverse(list);
for (int i = 0; i < list.size(); i++) {
if (list.get(i).state != null) {
lv.setAdapter(new MyListAdapter(
getApplicationContext(), list));
}
}
break;
case 3:
list = DBAdpter.requestUserData(assosiatetoken);
for (int i = 0; i < list.size(); i++) {
lv.setAdapter(new MyListAdapter(
getApplicationContext(), list));
}
break;
default:
break;
}
}
public void onNothingSelected(AdapterView<?> arg0) {
}
});
back.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
finish();
}
});
}
static final Comparator<All_Request_data_dto> byDate = new Comparator<All_Request_data_dto>() {
SimpleDateFormat sdf = new SimpleDateFormat("MM/dd/yyyy hh:mm:ss a");
public int compare(All_Request_data_dto ord1, All_Request_data_dto ord2) {
java.util.Date d1 = null;
java.util.Date d2 = null;
try {
d1 = sdf.parse(ord1.lastModifiedDate);
d2 = sdf.parse(ord2.lastModifiedDate);
} catch (java.text.ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return (d1.getTime() > d2.getTime() ? -1 : 1); // descending
// return (d1.getTime() > d2.getTime() ? 1 : -1); //ascending
}
};
static final Comparator<All_Request_data_dto> byDate1 = new Comparator<All_Request_data_dto>() {
SimpleDateFormat sdf = new SimpleDateFormat("MM/dd/yyyy hh:mm:ss a");
public int compare(All_Request_data_dto ord1, All_Request_data_dto ord2) {
java.util.Date d1 = null;
java.util.Date d2 = null;
try {
d1 = sdf.parse(ord1.submitDate);
d2 = sdf.parse(ord2.submitDate);
} catch (java.text.ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return (d1.getTime() > d2.getTime() ? -1 : 1); // descending
// return (d1.getTime() > d2.getTime() ? 1 : -1); //ascending
}
};
static final Comparator<All_Request_data_dto> byDate3 = new Comparator<All_Request_data_dto>() {
public int compare(All_Request_data_dto ord1, All_Request_data_dto ord2) {
String d1 = null;
String d2 = null;
d1 = ord1.state;
d2 = ord2.state;
return d1.compareToIgnoreCase(d2);
}
};
class doinbackground extends AsyncTask<Void, Void, Void> {
ProgressDialog pd;
private Context ctx;
public doinbackground(Context c) {
ctx = c;
}
@Override
protected void onPreExecute() {
super.onPreExecute();
pd = new ProgressDialog(ctx);
pd.setMessage("Loading...");
pd.show();
}
@Override
protected Void doInBackground(Void... Params) {
return null;
}
@Override
protected void onPostExecute(Void result) {
super.onPostExecute(result);
pd.cancel();
}
}
public class MyListAdapter extends BaseAdapter {
private ArrayList<All_Request_data_dto> list;
public MyListAdapter(Context mContext,
ArrayList<All_Request_data_dto> list) {
this.list = list;
}
public int getCount() {
return list.size();
}
public All_Request_data_dto getItem(int position) {
return list.get(position);
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
// if (convertView == null) {
LayoutInflater inflator = (LayoutInflater) getSystemService(LAYOUT_INFLATER_SERVICE);
convertView = inflator.inflate(R.layout.custom_request_data, null);
TextView req_id = (TextView) convertView.findViewById(R.id.req_txt);
TextView date = (TextView) convertView.findViewById(R.id.date_txt);
TextView owner = (TextView) convertView
.findViewById(R.id.owner_txt);
TextView state = (TextView) convertView
.findViewById(R.id.state_txt);
req_id.setText(list.get(position).requestId + " - "
+ list.get(position).title);
date.setText(list.get(position).lastModifiedDate + " - "
+ list.get(position).submitDate);
owner.setText(list.get(position).owner);
state.setText(list.get(position).state);
// }
return convertView;
}
}
}