在android中获取联系人非常慢
我编写了一个代码，从联系人中获取联系人姓名、电话号码和图像，并在android的listview中显示。它工作正常，但需要更多的时间来加载。我曾尝试在代码的某些部分使用多线程。但加载时间没有缩短 以下是在android中获取联系人非常慢,android,contacts,android-contacts,Android,Contacts,Android Contacts,我编写了一个代码，从联系人中获取联系人姓名、电话号码和图像，并在android的listview中显示。它工作正常，但需要更多的时间来加载。我曾尝试在代码的某些部分使用多线程。但加载时间没有缩短 以下是onCreate（）方法： protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); lv
onCreate（）protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
lvDetail = (ListView) findViewById(R.id.listView1);
fetchcontacts();
lvDetail.setAdapter(new MyBaseAdapter(context, myList));
}
private void fetchcontacts() {
// TODO Auto-generated method stub
Cursor cursor = getContentResolver().query(ContactsContract.Contacts.CONTENT_URI, null,
null, null, ContactsContract.Contacts.DISPLAY_NAME + " ASC");
int count = cursor.getCount();
if (count > 0) {
Toast.makeText(context, "count >0", Toast.LENGTH_SHORT).show();
while (cursor.moveToNext()) {
String columnId = ContactsContract.Contacts._ID;
int cursorIndex = cursor.getColumnIndex(columnId);
String id = cursor.getString(cursorIndex);
name = cursor.getString(cursor
.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
Toast.makeText(context, "Toast 1", Toast.LENGTH_SHORT).show();
int numCount = Integer.parseInt(cursor.getString(cursor
.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER)));
if (numCount > 0) {
Toast.makeText(context, "Toast 2", Toast.LENGTH_SHORT).show();
Cursor phoneCursor = getContentResolver().query(
ContactsContract.CommonDataKinds.Phone.CONTENT_URI,null,
CommonDataKinds.Phone.CONTACT_ID+" = ?", new String[] { id
}, ContactsContract.Contacts.DISPLAY_NAME + " ASC");
while (phoneCursor.moveToNext()) {
Toast.makeText(context, "Toast 3", Toast.LENGTH_SHORT).show();
phoneNo = phoneCursor.getString(phoneCursor
.getColumnIndex(ContactsContract.CommonDataKinds.
Phone.NUMBER));
String image_uri = phoneCursor
.getString(phoneCursor
.getColumnIndex(ContactsContract.CommonDataKinds.Phone.PHOTO_URI));
if (image_uri != null) {
Toast.makeText(context, "Toast 4", Toast.LENGTH_SHORT).show();
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();
}
}
Toast.makeText(context, name, Toast.LENGTH_SHORT).show();
getDataInList(name,phoneNo,bitmap);
name=null;
phoneNo=null;
Drawable myDrawable = getResources().getDrawable(R.drawable.star1);
bitmap = ((BitmapDrawable) myDrawable).getBitmap();
}
phoneCursor.close();
}
}
}
在这里，listview的setAdapter（）函数在将所有联系人提取到ArrayList后工作。有人知道如何在获取联系人时显示联系人吗？有任何示例代码吗？1.从
光标Cursor cursor = getContentResolver().query(
ContactsContract.Contacts.CONTENT_URI,
new String[] { ContactsContract.Contacts._ID,
ContactsContract.Contacts.HAS_PHONE_NUMBER,
ContactsContract.Contacts.DISPLAY_NAME }, null, null,
ContactsContract.Contacts.DISPLAY_NAME + " ASC");
AsyncTask注意：这两个步骤将在一定程度上解决..但不完全解决回退任务中使用的larse大小的联系人。 Uri=Uri.withAppendedPath（ContactsContract.PhoneLookup.CONTENT\u FILTER\u Uri，Uri.encode（数字[i]）
对我来说，最快的方式就是这么远
ContentResolver cr = mContext.getContentResolver(); Cursor cursor= mContext.getContentResolver().query(ContactsContract.Contacts.CONTENT_URI, PROJECTION, "HAS_PHONE_NUMBER <> 0", null, null); if (cursor!= null) { final int displayNameIndex = cursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME); final int numberIndex = cursor.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER); final int idIndex= cursor.getColumnIndex(ContactsContract.Contacts._ID); String displayName, number = null, idValue; while (cursor.moveToNext()) {
displayName = cursor.getString(displayNameIndex);
idValue= cursor.getString(idIndex);
Cursor phones = mContext.getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, "contact_id = '" + idValue + "'", null, null);
phones.moveToFirst();
try {
number = phones.getString(phones.getColumnIndex("data1"));
}
catch (CursorIndexOutOfBoundsException e)
{`
}
phones.close();
userList.add(new ContactModel(displayName , number , null , }
ContentResolver cr=mContext.getContentResolver（）；Cursor Cursor=mContext.getContentResolver（）.query（ContactsContract.Contacts.CONTENT\u URI，投影，“HAS\u PHONE\u NUMBER 0”，null，null）；if（cursor！=null）{final int displayNameIndex=cursor.getColumnIndex（ContactsContract.Contacts.DISPLAY\u NAME）；final int numberIndex=cursor.getColumnIndex（ContactsContract.Contacts.DISPLAY\u NAME）；final int numberIndex=cursor.getColumnIndex（Contacts.Contacts.ID）；String displayName=null，idValue；while（cursor.moveToNext（））{
displayName=cursor.getString（displayNameIndex）；
idValue=cursor.getString（idIndex）；
Cursor phones=mContext.getContentResolver（）.query（ContactsContract.CommonDataTypes.Phone.CONTENT_URI，null，“contact_id='”+idValue+“”，null，null）；
moveToFirst（）；
试一试{
number=phones.getString（phones.getColumnIndex（“data1”）；
}
捕获（游标索引自动边界异常e）
{`
}
电话。关闭（）；
添加（新的ContactModel（displayName，number，null，}
//联系人实体
公共级MobileContact{
公共字符串名称；
公众联络；
公共类型；
公共MobileContact（字符串触点，类型）{
name=“”；
this.contact=contact；
this.type=type；
}
public MobileContact（字符串名称、字符串联系人、类型）{
this.name=名称；
this.contact=contact；
this.type=type；
}
公共枚举类型{
电子邮件、电话
}
@凌驾
公共字符串toString（）{
返回“MobileContact{”+
“name=”+name+“\”+
“，contact='”+contact+'\''+
“，type=“+type”+
'}';
}
}
//收集联系人的方法
公共列表getAllContacts（）{
调试（“获取所有联系人”）；
List mobileContacts=new ArrayList（）；
ContentResolver ContentResolver=context.getContentResolver（）；
//添加所有手机联系人
游标phonesCursor=contentResolver.query（ContactsContact.CommonDataTypes.Phone.CONTENT\u URI，新字符串[]{ContactsContact.CommonDataTypes.Phone.NUMBER，ContactsContact.CommonDataTypes.Phone.CONTACT\u ID}，null，null，null）；
while（phonesCursor！=null&&phonesCursor.moveToNext（）{
String contactId=phonesCursor.getString（phonesCursor.getColumnIndex（ContactsContract.CommonDataTypes.Phone.CONTACT_ID））；
String phoneNumber=phonesCursor.getString（phonesCursor.getColumnIndex（ContactsContract.CommonDataTypes.Phone.NUMBER））.replace（“，”）；
添加（新的MobileContact（联系人ID、电话号码、MobileContact.Type.PHONE））；
}
if（phonesCursor！=null）{
phonesCursor.close（）；
}
//添加所有电子邮件联系人
Cursor emailCursor=contentResolver.query（ContactsContract.CommonDataTypes.Email.CONTENT\u URI，新字符串[]{ContactsContract.CommonDataTypes.Email.DATA，ContactsContract.CommonDataTypes.Email.CONTACT\u ID}，null，null，null）；
while（emailCursor！=null&&emailCursor.moveToNext（）{
String contactId=emailCursor.getString（emailCursor.getColumnIndex（ContactsContract.CommonDataTypes.Email.CONTACT_ID））；
String email=emailCursor.getString（emailCursor.getColumnIndex（ContactsContract.CommonDataTypes.email.DATA））；
添加（新的MobileContact（联系人ID、电子邮件、MobileContact.Type.email））；
}
如果（emailCursor！=null）{
emailCursor.close（）；
}
//获取联系人姓名映射
Map contactMap=newhashmap（）；
Cursor contactsCursor=contentResolver.query（ContactsContract.Contacts.CONTENT\u URI，新字符串[]{ContactsContract.Contacts.\u ID，ContactsContract.Contacts.DISPLAY\u名称，ContactsContract.Contacts.HAS\u PHONE\u NUMBER}，null，null，ContactsContract.Contacts.DISPLAY\u名称）；
while（contactsCursor！=null&&contactsCursor.moveToNext（）{
String contactId=contactsCursor.getString（contactsCursor.getColumnIndex（ContactsContract.Contacts.\u ID））；
String contactName=contactsCursor.getString（contactsCursor.getColumnIndex（ContactsContract.Contacts.DISPLAY_NAME））；
contactMap.put（contactId、contactName）；
}
if（phonesCursor！=null）{
phonesCursor.close（）；
}
//替换contactId以显示名称
用于（MobileContact MobileContact:mobileContacts）{
String displayName=contactMap.get（mobileContact.name）；
美孚利
ContentResolver cr = mContext.getContentResolver(); Cursor cursor= mContext.getContentResolver().query(ContactsContract.Contacts.CONTENT_URI, PROJECTION, "HAS_PHONE_NUMBER <> 0", null, null); if (cursor!= null) { final int displayNameIndex = cursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME); final int numberIndex = cursor.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER); final int idIndex= cursor.getColumnIndex(ContactsContract.Contacts._ID); String displayName, number = null, idValue; while (cursor.moveToNext()) {
displayName = cursor.getString(displayNameIndex);
idValue= cursor.getString(idIndex);
Cursor phones = mContext.getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, "contact_id = '" + idValue + "'", null, null);
phones.moveToFirst();
try {
number = phones.getString(phones.getColumnIndex("data1"));
}
catch (CursorIndexOutOfBoundsException e)
{`
}
phones.close();
userList.add(new ContactModel(displayName , number , null , }
//contact entity
public class MobileContact {
public String name;
public String contact;
public Type type;
public MobileContact(String contact, Type type) {
name = "";
this.contact = contact;
this.type = type;
}
public MobileContact(String name, String contact, Type type) {
this.name = name;
this.contact = contact;
this.type = type;
}
public enum Type {
EMAIL, PHONE
}
@Override
public String toString() {
return "MobileContact{" +
"name='" + name + '\'' +
", contact='" + contact + '\'' +
", type=" + type +
'}';
}
}
// method for collect contacts
public List<MobileContact> getAllContacts() {
log.debug("get all contacts");
List<MobileContact> mobileContacts = new ArrayList<>();
ContentResolver contentResolver = context.getContentResolver();
// add all mobiles contact
Cursor phonesCursor = contentResolver.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, new String[]{ContactsContract.CommonDataKinds.Phone.NUMBER, ContactsContract.CommonDataKinds.Phone.CONTACT_ID}, null, null, null);
while (phonesCursor != null && phonesCursor.moveToNext()) {
String contactId = phonesCursor.getString(phonesCursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.CONTACT_ID));
String phoneNumber = phonesCursor.getString(phonesCursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER)).replace(" ", "");
mobileContacts.add(new MobileContact(contactId, phoneNumber, MobileContact.Type.PHONE));
}
if (phonesCursor != null) {
phonesCursor.close();
}
// add all email contact
Cursor emailCursor = contentResolver.query(ContactsContract.CommonDataKinds.Email.CONTENT_URI, new String[]{ContactsContract.CommonDataKinds.Email.DATA, ContactsContract.CommonDataKinds.Email.CONTACT_ID}, null, null, null);
while (emailCursor != null && emailCursor.moveToNext()) {
String contactId = emailCursor.getString(emailCursor.getColumnIndex(ContactsContract.CommonDataKinds.Email.CONTACT_ID));
String email = emailCursor.getString(emailCursor.getColumnIndex(ContactsContract.CommonDataKinds.Email.DATA));
mobileContacts.add(new MobileContact(contactId, email, MobileContact.Type.EMAIL));
}
if (emailCursor != null) {
emailCursor.close();
}
// get contact name map
Map<String, String> contactMap = new HashMap<>();
Cursor contactsCursor = contentResolver.query(ContactsContract.Contacts.CONTENT_URI, new String[]{ContactsContract.Contacts._ID, ContactsContract.Contacts.DISPLAY_NAME, ContactsContract.Contacts.HAS_PHONE_NUMBER}, null, null, ContactsContract.Contacts.DISPLAY_NAME);
while (contactsCursor != null && contactsCursor.moveToNext()) {
String contactId = contactsCursor.getString(contactsCursor.getColumnIndex(ContactsContract.Contacts._ID));
String contactName = contactsCursor.getString(contactsCursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
contactMap.put(contactId, contactName);
}
if (phonesCursor != null) {
phonesCursor.close();
}
// replace contactId to display name
for (MobileContact mobileContact : mobileContacts) {
String displayName = contactMap.get(mobileContact.name);
mobileContact.name = displayName != null ? displayName : "";
}
// sort list by name
Collections.sort(mobileContacts, new Comparator<MobileContact>() {
@Override
public int compare(MobileContact c1, MobileContact c2) {
return c1.name.compareTo(c2.name);
}
});
return mobileContacts;
}