大家好我是android的新手。你能帮我一个ListView。我在这里分享我所有的代码......我有一个微调器......还有一个升序按钮......根据微调器项目的升序按钮必须对列表项进行排序..
public class LeadStatusActivity extends Activity {
Spinner leadno;
ListView listitems;
Intent it;
CustomArrayAdapter customadapter;
Button ascending;
String label;
final String[] numberarr = { "LEAD003", "LEAD001", "LEAD002" };
final String[] datearr = { "1/10/2013", "2/10/2013", "3/10/2013" };
final String[] typearr = { "Home Loan", "Home Loan", "Auto Loan" };
final String[] locationarr = { "Pune", "Pune", "Pune" };
final String[] stagearr = { "Hot", "Hot", "Cold" };
final String[] namearr = { "ChandraSekhar MuthhuSwami Iyer",
"Poorvi Bhatiya", "Rohan Khanna" };
final String[] statusarr = { "Open", "Open", "Closed" };
final String[] lastdatearr = { "4/10/2013", "4/10/2013", "2/10/2013" };
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.lead_status);
ascending = (Button) findViewById(R.id.ascending);
leadno = (Spinner) findViewById(R.id.leadno);
listitems = (ListView) findViewById(R.id.listitems);
addItemsOnSpinner2();
}
public void addItemsOnSpinner2() {
ArrayList<String> list = new ArrayList<String>();
list.add("Lead Number");
list.add("Lead Date");
list.add("Product Type");
list.add("Location");
list.add("Client Name");
list.add("Current Stage");
list.add("Status");
list.add("Last Updated Date");
ArrayAdapter<String> dataAdapter = new ArrayAdapter<String>(this,
android.R.layout.simple_spinner_item, list);
dataAdapter
.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
leadno.setAdapter(dataAdapter);
ascending.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
if (leadno.getSelectedItem().toString()
.equalsIgnoreCase("Lead Number")) {
String[] strings = { "LEAD003", "LEAD001", "LEAD002" };
Ascendingsort(LeadStatusActivity.this, strings);
customadapter = new CustomArrayAdapter(
getApplicationContext(), strings, datearr, typearr,
locationarr, namearr, stagearr, statusarr,
lastdatearr);
listitems.setAdapter(customadapter);
} else if (leadno.getSelectedItem().toString()
.equalsIgnoreCase("Lead Date")) {
String[] strings = { "1/10/2013", "2/10/2013", "3/10/2013" };
Ascendingsort(LeadStatusActivity.this, strings);
customadapter = new CustomArrayAdapter(
getApplicationContext(), numberarr, strings,
typearr, locationarr, namearr, stagearr, statusarr,
lastdatearr);
listitems.setAdapter(customadapter);
} else if (leadno.getSelectedItem().toString()
.equalsIgnoreCase("Product Type")) {
String[] strings = { "Home Loan", "Home Loan", "Auto Loan" };
Ascendingsort(LeadStatusActivity.this, strings);
customadapter = new CustomArrayAdapter(
getApplicationContext(), numberarr, datearr,
strings, locationarr, namearr, stagearr, statusarr,
lastdatearr);
listitems.setAdapter(customadapter);
} else if (leadno.getSelectedItem().toString()
.equalsIgnoreCase("Location")) {
String[] strings = { "Pune", "Pune", "Pune" };
Ascendingsort(LeadStatusActivity.this, strings);
customadapter = new CustomArrayAdapter(
getApplicationContext(), numberarr, datearr,
typearr, strings, namearr, stagearr, statusarr,
lastdatearr);
listitems.setAdapter(customadapter);
} else if (leadno.getSelectedItem().toString()
.equalsIgnoreCase("Current Stage")) {
String[] strings = { "Hot", "Hot", "Cold" };
Ascendingsort(LeadStatusActivity.this, strings);
customadapter = new CustomArrayAdapter(
getApplicationContext(), numberarr, datearr,
typearr, locationarr, namearr, strings, statusarr,
lastdatearr);
listitems.setAdapter(customadapter);
} else if (leadno.getSelectedItem().toString()
.equalsIgnoreCase("Client Name")) {
String[] strings = { "ChandraSekhar MuthhuSwami Iyer",
"Poorvi Bhatiya", "Rohan Khanna" };
Ascendingsort(LeadStatusActivity.this, strings);
customadapter = new CustomArrayAdapter(
getApplicationContext(), numberarr, datearr,
typearr, locationarr, namearr, stagearr, strings,
lastdatearr);
listitems.setAdapter(customadapter);
} else if (leadno.getSelectedItem().toString()
.equalsIgnoreCase("Last Updated Date")) {
String[] strings = { "4/10/2013", "4/10/2013", "2/10/2013" };
Ascendingsort(LeadStatusActivity.this, strings);
customadapter = new CustomArrayAdapter(
getApplicationContext(), numberarr, datearr,
typearr, locationarr, namearr, stagearr, statusarr,
strings);
listitems.setAdapter(customadapter);
}
}
});
customadapter = new CustomArrayAdapter(getApplicationContext(),
numberarr, datearr, typearr, locationarr, namearr, stagearr,
statusarr, lastdatearr);
listitems.setAdapter(customadapter);
System.out.println("PPPPPPP " + numberarr + datearr + typearr
+ locationarr + namearr + stagearr + statusarr + lastdatearr);
listitems.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> av, View v, int position,
long id) {
// it = new Intent(LeadStatusActivity.this,
// ScheduleCalculatorActivity.class);
// startActivity(it);
}
});
}
protected String[] Ascendingsort(LeadStatusActivity leadStatusActivity,
String[] strings) {
Arrays.sort(strings);
return strings;
}
}
这是我的customeArrayadapter类
public class CustomArrayAdapter extends ArrayAdapter<String> {
private Context context;
private String[] numberarr, datearr, typearr, locationarr, namearr,
stagearr, statusarr, lastdatearr;
public CustomArrayAdapter(Context context, String[] numberarr,
String[] datearr, String[] typearr, String[] locationarr,
String[] namearr, String[] stagearr, String[] statusarr,
String[] lastdatearr) {
super(context, R.layout.leadstatus_row, numberarr);
this.context = context;
this.numberarr = numberarr;
this.datearr = datearr;
this.typearr = typearr;
this.locationarr = locationarr;
this.namearr = namearr;
this.stagearr = stagearr;
this.statusarr = statusarr;
this.lastdatearr = lastdatearr;
}
public CustomArrayAdapter(Context con) {
super(con, R.layout.lead_status);
this.context = con;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
LayoutInflater inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View rowView = convertView;
if (rowView == null) {
rowView = inflater.inflate(R.layout.leadstatus_row, parent, false);
}
TextView number = (TextView) rowView.findViewById(R.id.number);
TextView date = (TextView) rowView.findViewById(R.id.date);
TextView type = (TextView) rowView.findViewById(R.id.type);
TextView location = (TextView) rowView.findViewById(R.id.locname);
TextView clientname = (TextView) rowView.findViewById(R.id.name);
TextView currentstage = (TextView) rowView.findViewById(R.id.stage);
TextView status = (TextView) rowView.findViewById(R.id.stat);
TextView lastdate = (TextView) rowView.findViewById(R.id.lastdate);
if (!numberarr[position].equalsIgnoreCase("")) {
number.setText(numberarr[position]);
}
if (!datearr[position].equalsIgnoreCase("")) {
date.setText(datearr[position]);
}
if (!typearr[position].equalsIgnoreCase("")) {
type.setText(typearr[position]);
}
if (!locationarr[position].equalsIgnoreCase("")) {
location.setText(locationarr[position]);
}
if (!namearr[position].equalsIgnoreCase("")) {
clientname.setText(namearr[position]);
}
if (!stagearr[position].equalsIgnoreCase("")) {
currentstage.setText(stagearr[position]);
}
if (!statusarr[position].equalsIgnoreCase("")) {
status.setText(statusarr[position]);
}
if (!lastdatearr[position].equalsIgnoreCase("")) {
lastdate.setText(lastdatearr[position]);
}
// TextView textView = (TextView) rowView.findViewById(R.id.labels);
// ImageView imageView = (ImageView) rowView.findViewById(R.id.icons);
/*
* if (!options[position].equals("")) {
* textView.setText(options[position]); } if (images[position] != 0) {
* imageView.setImageResource(images[position]); } else {
* imageView.setImageResource(R.drawable.ic_launcher); }
*/
return rowView;
}
}
请朋友们帮助我。现在问题是某个特定的排序数组已排序，但整个列表项保持不变。
答案 0 :(得分：0)
首先不要将getApplicationContext（）用于上下文。从当前活动（ListActivity.this）获取上下文。
如果要重新排列列表，则需要调用listitems.notifyDatasetChanged（）;告诉适配器它所拥有的数据已经改变。
如果你无法弄清楚，谷歌是你的朋友，并且有很多教程可供选择