我有电话号码.有没有办法检查设备中的联系人数据库中是否存在电话号码？根据我的需要,我的应用程序进一步移动.请建议或者如果有任何人可以提供示例代码段,请提供.
以下是我写的代码：
public boolean contactExists(Activity _activity,String number) {
String[] mPhoneNumberProjection = { PhoneLookup._ID,PhoneLookup.NUMBER,PhoneLookup.DISPLAY_NAME };
Cursor cur = _activity.getContentResolver().query(number,mPhoneNumberProjection,null,null);
try {
if (cur.moveToFirst()) {
return true;
}
} finally {
if (cur != null)
cur.close();
}
return false;
}// contactExists
提前致谢…
解决方法
public boolean contactExists(Activity _activity,String number) {
if (number != null) {
Uri lookupUri = Uri.withAppendedPath(PhoneLookup.CONTENT_FILTER_URI,Uri.encode(number));
String[] mPhoneNumberProjection = { PhoneLookup._ID,PhoneLookup.DISPLAY_NAME };
Cursor cur = _activity.getContentResolver().query(lookupUri,null);
try {
if (cur.moveToFirst()) {
return true;
}
} finally {
if (cur != null)
cur.close();
}
return false;
} else {
return false;
}
}// contactExists
处理nullpointer异常.
