我正在使用Arraylist<Hashmap<String,String>>在我的Arraylist联系人中，它只添加了最后一个元素。
我的代码：
public void readContacts() {
StringBuffer sb = new StringBuffer();
sb.append("......Contact Details.....");
ContentResolver cr = getContentResolver();
Cursor cur = cr.query(ContactsContract.Contacts.CONTENT_URI, null, null, null, null);
String phone = null;
String emailContact = null;
String emailType = null;
String name = null;
String image_uri = "";
Bitmap bitmap = null;
ArrayList<HashMap<String, String>> Contacts;
if (cur.getCount() > 0) {
while (cur.moveToNext()) {
Contacts = new ArrayList<HashMap<String, String>>();
String id = cur.getString(cur.getColumnIndex(ContactsContract.Contacts._ID));
name = cur.getString(cur.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
image_uri = cur.getString(cur.getColumnIndex(ContactsContract.CommonDataKinds.Phone.PHOTO_URI));
if (Integer.parseInt(cur.getString(cur.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER))) > 0) {
System.out.println("name : " + name + ", ID : " + id);
sb.append("\n Contact Name:" + name);
Cursor pCur = cr.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, ContactsContract.CommonDataKinds.Phone.CONTACT_ID + " = ?", new String[]{id}, null);
while (pCur.moveToNext()) {
phone = pCur.getString(pCur.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
sb.append("\n Phone number:" + phone);
System.out.println("phone" + mPhoneno.toString());
}
pCur.close();
Cursor emailCur = cr.query(ContactsContract.CommonDataKinds.Email.CONTENT_URI, null, ContactsContract.CommonDataKinds.Email.CONTACT_ID + " = ?", new String[]{id}, null);
while (emailCur.moveToNext()) {
emailContact = emailCur.getString(emailCur.getColumnIndex(ContactsContract.CommonDataKinds.Email.DATA));
emailType = emailCur.getString(emailCur.getColumnIndex(ContactsContract.CommonDataKinds.Email.TYPE));
sb.append("\nEmail:" + emailContact);
System.out.println("Email " + emailContact + " Email Type : " + emailType);
}
emailCur.close();
}
if (image_uri != null) {
System.out.println(Uri.parse(image_uri));
try {
bitmap = MediaStore.Images.Media.getBitmap(this.getContentResolver(), Uri.parse(image_uri));
sb.append("\n Image in Bitmap:" + bitmap);
System.out.println(bitmap);
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block e.printStackTrace();
}
}
sb.append("\n........................................");
HashMap<String, String> map = new HashMap<String, String>();//put in it
map.put("FirstName", name);
map.put("LastName", "");
map.put("MobileNo", phone);
map.put("Email",emailContact);
Contacts.add(map);
System.out.println("Contacts List :" + Contacts);
}
}
}
我做错了什么？请指导我。在此先感谢。
答案 0 :(得分：1)
你需要在while命令之前移动这一行
Contacts = new ArrayList<HashMap<String, String>>();
每次分配一个新的arrayList
答案 1 :(得分：0)
public void readContacts() {
StringBuffer sb = new StringBuffer();
sb.append("......Contact Details.....");
ContentResolver cr = getContentResolver();
Cursor cur = cr.query(ContactsContract.Contacts.CONTENT_URI, null, null, null, null);
String phone = null;
String emailContact = null;
String emailType = null;
String name = null;
String image_uri = "";
Bitmap bitmap = null;
ArrayList<HashMap<String, String>> Contacts;
if (cur.getCount() > 0) {
///get Contacts initialization out of while
Contacts = new ArrayList<HashMap<String, String>>();
while (cur.moveToNext()) {
String id = cur.getString(cur.getColumnIndex(ContactsContract.Contacts._ID));
name = cur.getString(cur.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
image_uri = cur.getString(cur.getColumnIndex(ContactsContract.CommonDataKinds.Phone.PHOTO_URI));
if (Integer.parseInt(cur.getString(cur.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER))) > 0) {
System.out.println("name : " + name + ", ID : " + id);
sb.append("\n Contact Name:" + name);
Cursor pCur = cr.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, ContactsContract.CommonDataKinds.Phone.CONTACT_ID + " = ?", new String[]{id}, null);
while (pCur.moveToNext()) {
phone = pCur.getString(pCur.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
sb.append("\n Phone number:" + phone);
System.out.println("phone" + mPhoneno.toString());
}
pCur.close();
Cursor emailCur = cr.query(ContactsContract.CommonDataKinds.Email.CONTENT_URI, null, ContactsContract.CommonDataKinds.Email.CONTACT_ID + " = ?", new String[]{id}, null);
while (emailCur.moveToNext()) {
emailContact = emailCur.getString(emailCur.getColumnIndex(ContactsContract.CommonDataKinds.Email.DATA));
emailType = emailCur.getString(emailCur.getColumnIndex(ContactsContract.CommonDataKinds.Email.TYPE));
sb.append("\nEmail:" + emailContact);
System.out.println("Email " + emailContact + " Email Type : " + emailType);
}
emailCur.close();
}
if (image_uri != null) {
System.out.println(Uri.parse(image_uri));
try {
bitmap = MediaStore.Images.Media.getBitmap(this.getContentResolver(), Uri.parse(image_uri));
sb.append("\n Image in Bitmap:" + bitmap);
System.out.println(bitmap);
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block e.printStackTrace();
}
}
sb.append("\n........................................");
HashMap<String, String> map = new HashMap<String, String>();//put in it
map.put("FirstName", name);
map.put("LastName", "");
map.put("MobileNo", phone);
map.put("Email",emailContact);
Contacts.add(map);
System.out.println("Contacts List :" + Contacts);
}
}
}