我正在开发一个需要获取联系人列表的应用程序。取得所有联系需要时间。所以我想在本地存储联系人列表。但当新联系人添加到手机中时,我需要更新。如何通知我的应用程序新联系人已添加到设备中?我使用此代码从设备获取联系人:`
public void getContact()
{
ContentResolver cr = getContentResolver();
Cursor cur = cr.query(ContactsContract.Contacts.CONTENT_URI,
null, null, null, null);
Log.e("curcouuntLOL",cur.getCount()+"");
if (cur.getCount() > 0) {
while (cur.moveToNext()) {
String id = cur.getString(
cur.getColumnIndex(ContactsContract.Contacts._ID));
String name = cur.getString(cur.getColumnIndex(
ContactsContract.Contacts.DISPLAY_NAME));
String photoUri = cur.getString(cur.getColumnIndex(ContactsContract.Contacts.PHOTO_THUMBNAIL_URI));
if (Integer.parseInt(cur.getString(cur.getColumnIndex(
ContactsContract.Contacts.HAS_PHONE_NUMBER))) > 0) {
modelPhone=new ModelPhone();
Cursor pCur = cr.query(
ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
null,
ContactsContract.CommonDataKinds.Phone.CONTACT_ID +" = ?",
new String[]{id}, null);
while (pCur.moveToNext()) {
String phoneNo = pCur.getString(pCur.getColumnIndex(
ContactsContract.CommonDataKinds.Phone.NUMBER));
Toast.makeText(PhoneNumberlistActivity.this, "Name: " + name
+ ", Phone No: " + phoneNo +" ,photoUri :" + photoUri, Toast.LENGTH_SHORT).show();
}
pCur.close();
}
}
}
}`
这样你就可以:
public void generateNotification(String yourVariable) {
Intent offlineIntent = new Intent(this, NotificationReceiverActivity.class);
offlineIntent.setAction("Go Offline");
Bitmap largeIcon = BitmapFactory.decodeResource(getResources(), R.mipmap.logo);
long when = System.currentTimeMillis();
Uri alarmSound = RingtoneManager
.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
Intent notificationIntent = new Intent(getApplicationContext(), ActivityHome.class);
notificationIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP
| Intent.FLAG_ACTIVITY_SINGLE_TOP);
PendingIntent mainPIntent = PendingIntent.getActivity(this, 0,
notificationIntent, PendingIntent.FLAG_UPDATE_CURRENT);
Random random = new Random();
int m = random.nextInt(9999 - 1000) + 1000;
Notification noti = new Notification.Builder(this)
.setContentTitle(getResources().getString(R.string.app_name))
.setContentText(alertMessage)
.setSmallIcon(R.mipmap.logo)
.setLargeIcon(largeIcon)
.setAutoCancel(true)
.setSound(alarmSound).setAutoCancel(true).setWhen(when)
.setContentIntent(mainPIntent)
.setVibrate(new long[]{1000, 1000, 1000, 1000, 1000})
.build();
NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
noti.flags |= Notification.FLAG_AUTO_CANCEL;
notificationManager.notify(m, noti);
}