如何为此特定代码按字母顺序显示联系人？ dataadapter班也应该有变化吗？
public class Contacts extends Activity implements OnClickListener {
Button addcon, selcon, ok, back,search;
dataadapter dap;
ArrayList<String> name;
ArrayList<String> data;
ListView lv;
adapter adp;
ArrayAdapter<String> aadp;
Intent it;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.contacts);
// database adapter
dap = new dataadapter(Contacts.this);
// objects for buttons
addcon = (Button) findViewById(R.id.contacts);
ok = (Button) findViewById(R.id.save);
selcon = (Button) findViewById(R.id.selected);
back = (Button) findViewById(R.id.back);
// action to buttons
addcon.setOnClickListener(this);
selcon.setOnClickListener(this);
ok.setOnClickListener(this);
back.setOnClickListener(this);
// array list declaration
name = new ArrayList<String>();
data = new ArrayList<String>();
data = dap.getData();
// contacts
ContentResolver cr = this.getContentResolver();
// object cursor for contacts
Cursor cur = cr.query(
ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, null,
null,null);
if (cur.moveToFirst()) {
do {
name.add(cur
.getString(
cur.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME))
.toString());// contacts name it will return to
// arraylist
} while (cur.moveToNext());
}
// setting list view
lv=(ListView)findViewById(R.id.listView1);
lv = (ListView)findViewById (R.id.listView1);
lv.setFastScrollEnabled(true);
// selected contacts
aadp = new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_1, data);
lv.setAdapter(aadp);
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
switch (v.getId()) {
case R.id.contacts:
// add or edit
adp = new adapter();
lv.setAdapter(adp);
break;
case R.id.back:
// back to main screen
it = new Intent(Contacts.this, BlackcallsActivity.class);
it.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(it);
break;
case R.id.selected:
// selected contacts
aadp = new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_1, data);
lv.setAdapter(aadp);
break;
case R.id.save:
// saving contacts in dataabase
ArrayList<String> num = new ArrayList<String>();
ContentResolver cr = getContentResolver();
Cursor cur = cr.query(ContactsContract.Contacts.CONTENT_URI, null,
null, null,null);
String id,
Name,
ph = "";
if (cur.moveToFirst()) {
do {
id = cur.getString(cur
.getColumnIndex(ContactsContract.Contacts._ID));
Name = cur
.getString(cur
.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
int hasno = cur
.getInt(cur
.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER));
for (int i = 0; i < data.size(); i++) {
if (Name.equalsIgnoreCase(data.get(i).toString())) {
if (hasno == 1) {
Cursor pcur = cr
.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
null,
ContactsContract.CommonDataKinds.Phone.CONTACT_ID
+ "=?",
new String[] { id }, null);
if (pcur.moveToFirst()) {
ph = pcur
.getString(pcur
.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
String[] s1 = ph.split("-");
ph = "";
for (int j = 0; j < s1.length; j++) {
ph += s1[j].trim();
}
num.add(ph);
}
}
}
}
} while (cur.moveToNext());
}
dap.insert(data, num);
Toast.makeText(Contacts.this, "CONTACTS SAVED", Toast.LENGTH_SHORT)
.show();
it = new Intent(Contacts.this, BlackcallsActivity.class);
it.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(it);
break;
default:
break;
}
}
class adapter extends BaseAdapter {
@Override
public int getCount() {
// TODO Auto-generated method stub
return name.size();
}
@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return null;
}
@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return 0;
}
@Override
public View getView(final int position, View convertView,
ViewGroup parent) {
// TODO Auto-generated method stub
LayoutInflater lf = getLayoutInflater();
convertView = lf.inflate(R.layout.checklist, null);
final TextView tv = (TextView) convertView.findViewById(R.id.cname);
final CheckBox cb = (CheckBox) convertView.findViewById(R.id.check);
tv.setText(name.get(position));
for (int i = 0; i < data.size(); i++) {
if (data.get(i).equals(tv.getText())) {
cb.setChecked(true);
}
}
cb.setOnCheckedChangeListener(new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
String s = (String) tv.getText();
// TODO Auto-generated method stub
if (cb.isChecked()) {
data.add(s);
} else {
for (int i = 0; i < data.size(); i++) {
if (s.equals(data.get(i))) {
data.remove(i);
}
}
}
}
});
return convertView;
}
}
@Override
protected void onDestroy() {
// TODO Auto-generated method stub
super.onDestroy();
dap.close();
}
}