我有一个带有searchview和多选项的列表视图。为此，我尝试以下代码，如下所示。
Mainactivity： -
public class MainActivity extends Activity {
Context context = null;
ContactsAdapter objAdapter;
ListView lv = null;
EditText edtSearch = null;
LinearLayout llContainer = null;
Button btnOK = null;
RelativeLayout rlPBContainer = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
context = this;
setContentView(R.layout.activity_main);
rlPBContainer = (RelativeLayout) findViewById(R.id.pbcontainer);
edtSearch = (EditText) findViewById(R.id.input_search);
llContainer = (LinearLayout) findViewById(R.id.data_container);
btnOK = (Button) findViewById(R.id.ok_button);
btnOK.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
getSelectedContacts();
}
});
edtSearch.addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence cs, int arg1, int arg2,
int arg3) {
// When user changed the Text
String text = edtSearch.getText().toString()
.toLowerCase(Locale.getDefault());
objAdapter.filter(text);
}
@Override
public void beforeTextChanged(CharSequence arg0, int arg1,
int arg2, int arg3) {
// TODO Auto-generated method stub
}
@Override
public void afterTextChanged(Editable arg0) {
// TODO Auto-generated method stub
}
});
addContactsInList();
}
private void getSelectedContacts() {
// TODO Auto-generated method stub
StringBuffer sb = new StringBuffer();
for (ContactObject bean : ContactsListClass.phoneList) {
if (bean.isSelected()) {
sb.append(bean.getName());
sb.append(",");
}
}
String s = sb.toString().trim();
if (TextUtils.isEmpty(s)) {
Toast.makeText(context, "Select atleast one Contact",
Toast.LENGTH_SHORT).show();
} else {
s = s.substring(0, s.length() - 1);
Toast.makeText(context, "Selected Contacts : " + s,
Toast.LENGTH_SHORT).show();
}
}
private void addContactsInList() {
// TODO Auto-generated method stub
Thread thread = new Thread() {
@Override
public void run() {
showPB();
try {
Cursor phones = getContentResolver().query(
ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
null, null, null, null);
try {
ContactsListClass.phoneList.clear();
} catch (Exception e) {
}
while (phones.moveToNext()) {
String phoneName = phones
.getString(phones
.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME));
String phoneNumber = phones
.getString(phones
.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
String phoneImage = phones
.getString(phones
.getColumnIndex(ContactsContract.CommonDataKinds.Phone.CONTACT_ID));
ContactObject cp = new ContactObject();
cp.setName(phoneName);
cp.setNumber(phoneNumber);
cp.setImage(phoneImage);
ContactsListClass.phoneList.add(cp);
}
phones.close();
lv = new ListView(context);
lv.setLayoutParams(new RelativeLayout.LayoutParams(
RelativeLayout.LayoutParams.MATCH_PARENT,
RelativeLayout.LayoutParams.MATCH_PARENT));
runOnUiThread(new Runnable() {
@Override
public void run() {
// TODO Auto-generated method stub
llContainer.addView(lv);
}
});
Collections.sort(ContactsListClass.phoneList,
new Comparator<ContactObject>() {
@Override
public int compare(ContactObject lhs,
ContactObject rhs) {
return lhs.getName().compareTo(
rhs.getName());
}
});
objAdapter = new ContactsAdapter(MainActivity.this,
ContactsListClass.phoneList);
lv.setAdapter(objAdapter);
lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent,
View view, int position, long id) {
CheckBox chk = (CheckBox) view
.findViewById(R.id.contactcheck);
ContactObject bean = ContactsListClass.phoneList
.get(position);
if (bean.isSelected()) {
bean.setSelected(false);
chk.setChecked(false);
} else {
bean.setSelected(true);
chk.setChecked(true);
}
}
});
} catch (Exception e) {
e.printStackTrace();
}
hidePB();
}
};
thread.start();
}
void showPB() {
runOnUiThread(new Runnable() {
@Override
public void run() {
// TODO Auto-generated method stub
rlPBContainer.setVisibility(View.VISIBLE);
edtSearch.setVisibility(View.GONE);
btnOK.setVisibility(View.GONE);
}
});
}
void hidePB() {
runOnUiThread(new Runnable() {
@Override
public void run() {
// TODO Auto-generated method stub
rlPBContainer.setVisibility(View.GONE);
edtSearch.setVisibility(View.VISIBLE);
btnOK.setVisibility(View.VISIBLE);
}
});
}
}
适配器类： -
public class ContactsAdapter extends BaseAdapter {
Context mContext;
LayoutInflater inflater;
private List<ContactObject> mainDataList = null;
private ArrayList<ContactObject> arraylist;
public ContactsAdapter(Context context, List<ContactObject> mainDataList) {
mContext = context;
this.mainDataList = mainDataList;
inflater = LayoutInflater.from(mContext);
this.arraylist = new ArrayList<ContactObject>();
this.arraylist.addAll(mainDataList);
}
static class ViewHolder {
protected TextView name;
protected TextView number;
protected CheckBox check;
protected ImageView image;
}
@Override
public int getCount() {
return mainDataList.size();
}
@Override
public ContactObject getItem(int position) {
return mainDataList.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
public View getView(final int position, View view, ViewGroup parent) {
final ViewHolder holder;
if (view == null) {
holder = new ViewHolder();
view = inflater.inflate(R.layout.list_row, null);
holder.name = (TextView) view.findViewById(R.id.contactname);
holder.number = (TextView) view.findViewById(R.id.contactno);
holder.check = (CheckBox) view.findViewById(R.id.contactcheck);
holder.image = (ImageView) view.findViewById(R.id.contactimage);
view.setTag(holder);
view.setTag(R.id.contactname, holder.name);
view.setTag(R.id.contactno, holder.number);
view.setTag(R.id.contactcheck, holder.check);
holder.check
.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton vw,
boolean isChecked) {
int getPosition = (Integer) vw.getTag();
mainDataList.get(getPosition).setSelected(
vw.isChecked());
}
});
} else {
holder = (ViewHolder) view.getTag();
}
holder.check.setTag(position);
holder.name.setText(mainDataList.get(position).getName());
holder.number.setText(mainDataList.get(position).getNumber());
if (getByteContactPhoto(mainDataList.get(position).getImage()) == null) {
holder.image.setImageResource(R.drawable.abc_ab_share_pack_mtrl_alpha);
} else {
holder.image.setImageBitmap(getByteContactPhoto(mainDataList.get(position).getImage()));
}
holder.check.setChecked(mainDataList.get(position).isSelected());
return view;
}
public void filter(String charText) {
charText = charText.toLowerCase(Locale.getDefault());
mainDataList.clear();
if (charText.length() == 0) {
mainDataList.addAll(arraylist);
} else {
for (ContactObject wp : arraylist) {
if (wp.getName().toLowerCase(Locale.getDefault())
.contains(charText)) {
mainDataList.add(wp);
}
}
}
notifyDataSetChanged();
}
public Bitmap getByteContactPhoto(String contactId) {
Uri contactUri = ContentUris.withAppendedId(ContactsContract.Contacts.CONTENT_URI, Long.parseLong(contactId));
Uri photoUri = Uri.withAppendedPath(contactUri, ContactsContract.Contacts.Photo.CONTENT_DIRECTORY);
Cursor cursor = mContext.getContentResolver().query(photoUri,
new String[]{ContactsContract.Contacts.Photo.DATA15}, null, null, null);
if (cursor == null) {
return null;
}
try {
if (cursor.moveToFirst()) {
byte[] data = cursor.getBlob(0);
if (data != null) {
return BitmapFactory.decodeStream(new ByteArrayInputStream(data));
}
}
} finally {
cursor.close();
}
return null;
}
}
我的问题是 第1步：我从列表视图中选择了一个联系人。 第2步：现在我已经搜索了xxx联系人，我选择了它。 步骤3：现在当我按下确定按钮时，它只检索xxx联系人。 步骤4：需要从视图中检索所有选定的联系人
我该怎么做才能帮助我解决这个问题。
答案 0 :(得分：0)
您可以简单地创建一个对象列表，每次用户在列表视图中选择一个项目，您可以添加此视图中包含的对象，然后再进一步。如果用户想要删除对象，只需在列表中搜索它并删除它。
答案 1 :(得分：0)
我已经采用了一个数组并在文本更改之前添加了所有选定的项目，这解决了我的问题。
MainActivity： -
public class MainActivity extends Activity {
Context context = null;
ContactsAdapter objAdapter;
ListView lv = null;
EditText edtSearch = null;
LinearLayout llContainer = null;
Button btnOK = null;
RelativeLayout rlPBContainer = null;
ArrayList<String> selected = new ArrayList<String>();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
context = this;
setContentView(R.layout.activity_main);
rlPBContainer = (RelativeLayout) findViewById(R.id.pbcontainer);
edtSearch = (EditText) findViewById(R.id.input_search);
llContainer = (LinearLayout) findViewById(R.id.data_container);
btnOK = (Button) findViewById(R.id.ok_button);
btnOK.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
getSelectedContacts();
}
});
edtSearch.addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence cs, int arg1, int arg2,
int arg3) {
// When user changed the Text
String text = edtSearch.getText().toString()
.toLowerCase(Locale.getDefault());
objAdapter.filter(text);
}
@Override
public void beforeTextChanged(CharSequence s, int start,
int count, int after) {
for (ContactObject bean : ContactsListClass.phoneList) {
if (bean.isSelected()) {
selected.add(bean.getName());
}
}
}
@Override
public void afterTextChanged(Editable arg0) {
// TODO Auto-generated method stub
}
});
addContactsInList();
}
private void getSelectedContacts() {
StringBuffer sb = new StringBuffer();
for (ContactObject bean : ContactsListClass.phoneList) {
if (bean.isSelected()) {
selected.add(bean.getName());
}
}
for (int i = 0; i < selected.size(); i++) {
sb.append(selected.get(i));
sb.append(",");
}
String s = sb.toString().trim();
if (TextUtils.isEmpty(s)) {
Toast.makeText(context, "Select atleast one Contact",
Toast.LENGTH_SHORT).show();
} else {
s = s.substring(0, s.length() - 1);
Toast.makeText(context, "Selected Contacts : " + s,
Toast.LENGTH_SHORT).show();
}
}
private void addContactsInList() {
Thread thread = new Thread() {
@Override
public void run() {
showPB();
try {
Cursor phones = getContentResolver().query(
ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
null, null, null, null);
try {
ContactsListClass.phoneList.clear();
} catch (Exception e) {
}
while (phones.moveToNext()) {
String phoneName = phones
.getString(phones
.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME));
String phoneNumber = phones
.getString(phones
.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
String phoneImage = phones
.getString(phones
.getColumnIndex(ContactsContract.CommonDataKinds.Phone.CONTACT_ID));
ContactObject cp = new ContactObject();
cp.setName(phoneName);
cp.setNumber(phoneNumber);
cp.setImage(phoneImage);
ContactsListClass.phoneList.add(cp);
}
phones.close();
lv = new ListView(context);
lv.setLayoutParams(new RelativeLayout.LayoutParams(
RelativeLayout.LayoutParams.MATCH_PARENT,
RelativeLayout.LayoutParams.MATCH_PARENT));
runOnUiThread(new Runnable() {
@Override
public void run() {
// TODO Auto-generated method stub
llContainer.addView(lv);
}
});
Collections.sort(ContactsListClass.phoneList,
new Comparator<ContactObject>() {
@Override
public int compare(ContactObject lhs,
ContactObject rhs) {
return lhs.getName().compareTo(
rhs.getName());
}
});
objAdapter = new ContactsAdapter(MainActivity.this,
ContactsListClass.phoneList);
lv.setAdapter(objAdapter);
lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent,
View view, int position, long id) {
CheckBox chk = (CheckBox) view
.findViewById(R.id.contactcheck);
ContactObject bean = ContactsListClass.phoneList
.get(position);
if (bean.isSelected()) {
bean.setSelected(false);
chk.setChecked(false);
} else {
bean.setSelected(true);
chk.setChecked(true);
}
}
});
} catch (Exception e) {
e.printStackTrace();
}
hidePB();
}
};
thread.start();
}
void showPB() {
runOnUiThread(new Runnable() {
@Override
public void run() {
// TODO Auto-generated method stub
rlPBContainer.setVisibility(View.VISIBLE);
edtSearch.setVisibility(View.GONE);
btnOK.setVisibility(View.GONE);
}
});
}
void hidePB() {
runOnUiThread(new Runnable() {
@Override
public void run() {
// TODO Auto-generated method stub
rlPBContainer.setVisibility(View.GONE);
edtSearch.setVisibility(View.VISIBLE);
btnOK.setVisibility(View.VISIBLE);
}
});
}
}