Android：打开系统联系人界面并获取数据

在Android应用程序的开发中，经常要实现的一个功能是调用系统自带的联系人界面，做到选择人之后，取得相应的名称和号码，并返回。

    android2.0前后实现方式上也有一定的差别：主要是2.0及以上版本联系人API发生了变化，由原来的Contacts变成了ContactsContract。

必须权限：

<uses-permission android:name="android.permission.READ_CONTACTS" />

（一） 2.0之前取联系人列表的方式：

声明意图方式一

Intent intent = new Intent();
intent.setAction(Intent.ACTION_PICK);
intent.setData(Contacts.People.CONTENT_URI);
startActivityForResult(intent,    

PICK_CONTACT
   
  );

声明意图方式二
Intent intent  = new Intent(Intent.ACTION_PICK);
intent.setType("Contacts.People.CONTENT_TYPE");//vnd.android.cursor.dir/person
startActivityForResult(intent,    

PICK_CONTACT
   
  );

实现onActivityResult

protected void onActivityResult (int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
switch (requestCode) {
case   PICK_CONTACT   :
if (data == null) {
return;
}
Uri uri = data.getData();
Cursor cursor = getContentResolver().query(uri, null, null, null, null);
cursor.moveToFirst();
String number = cursor.getString(cursor.getColumnIndexOrThrow(Phones.NUMBER));
Log.d(TAG, "number" + number);
mContactText.setText(number);
mContactText.setSelection(number.length());
break;

default:
break;
}
}

（二） 2.0之后取联系人列表的方式：

声明意图方式一

Intent intent = new Intent(Intent.ACTION_PICK, ContactsContract.Contacts.CONTENT_URI);
startActivityForResult(intent, PICK_CONTACT);

声明意图方式二

Intent intent = new Intent(Intent.ACTION_PICK);   
      intent.setType(ContactsContract.Contacts.CONTENT_TYPE);//vnd.android.cursor.dir/contact

startActivityForResult(intent, PICK_CONTACT);

实现onActivityResult

private static final int PICK_CONTACT = 0;
@Override
public void onActivityResult(int reqCode, int resultCode, Intent data) {
super.onActivityResult(reqCode, resultCode, data);

switch (reqCode) {
case (PICK_CONTACT):
if (resultCode == Activity.RESULT_OK) {
Uri contactData = data.getData();
Cursor c = managedQuery(contactData, null, null, null, null);
if (c.moveToFirst()) {
String name = c.getString(c.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
String hasPhone = c.getString(c.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER));
String contactId = c.getString(c.getColumnIndex(ContactsContract.Contacts._ID));
String phoneNumber = null;
if (hasPhone.equalsIgnoreCase("1")) {
hasPhone = "true";
}
else {
hasPhone = "false";
}
if (Boolean.parseBoolean(hasPhone)) {
Cursor phones = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
null,
ContactsContract.CommonDataKinds.Phone.CONTACT_ID + " = "
+ contactId,
null,
null);
while (phones.moveToNext()) {
phoneNumber = phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
}
phones.close();
}

}
}
break;
}
}