我是
Android开发的新手,我正在尝试用名称和电话号码检索联系人列表.我尝试以下代码：
// Get a cursor over every contact.
Cursor cursor = getContentResolver().query(People.CONTENT_URI,null,null);
// Let the activity manage the cursor lifecycle.
startManagingCursor(cursor);
// Use the convenience properties to get the index of the columns
int nameIdx = cursor.getColumnIndexOrThrow(People.NAME);
int phoneIdx = cursor. getColumnIndexOrThrow(People.NUMBER);
String[] result = new String[cursor.getCount()];
if (cursor.moveToFirst())
do {
// Extract the name.
String name = cursor.getString(nameIdx);
// Extract the phone number.
String phone = cursor.getString(phoneIdx);
result[cursor.getPosition()] = name + "-" +" "+ phone;
} while(cursor.moveToNext());
该代码应该返回一个数组,其中包含所有联系人姓名及其电话号码,但这只能返回联系人的姓名,并在电话号码中返回NULL,
示例输出：
John - null
请在这方面帮助我这个代码中有什么问题.
在此方面的任何帮助都将非常感谢,并提前紧急感谢.
解决方法
在Android清单中：
<uses-permission android:name="android.permission.READ_CONTACTS" />
然后在活动中：
editText.setOnFocusChangeListener(new OnFocusChangeListener(){
@Override
public void onFocusChange(View v,boolean hasFocus) {
if(hasFocus){
editText.setText("");
Intent intent = new Intent(Intent.ACTION_PICK,ContactsContract.Contacts.CONTENT_URI);
startActivityForResult(intent,PICK_CONTACT);
}
}
});
然后你必须抓住动作选择联系人的结果：
@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);
if (c.moveToFirst())
{
String id = c.getString(c.getColumnIndexOrThrow(ContactsContract.Contacts._ID));
String hasPhone = c.getString(c.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER));
if (hasPhone.equalsIgnoreCase("1"))
{
Cursor phones = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI,ContactsContract.CommonDataKinds.Phone.CONTACT_ID +" = "+ id,null);
phones.moveToFirst();
String cNumber = phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
Toast.makeText(getApplicationContext(),cNumber,Toast.LENGTH_SHORT).show();
String nameContact = c.getString(c.getColumnIndexOrThrow(ContactsContract.Contacts.DISPLAY_NAME));
editText.setText(nameContact+ " "+ cNumber);
}
}
}
}
}
