当手机收到短信时，我有一个与联系人信息一起使用的应用程序，我需要将联系人信息输入到我创建的SMS接收器类中，但问题是当SMS接收器获取联系人时我的空指针异常错误，因为它不提取联系人信息，我的想法是获取所有联系人信息，以比较短信发送者的号码，以获得他的ID在我的应用程序中做其他操作。
这是我的代码：
public class SMSBroadcastReceiver extends BroadcastReceiver {
private static final String SMS_RECEIVED = "android.provider.Telephony.SMS_RECEIVED";
private static final String TAG = "SMSBroadcastReceiver";
private static Activity mActivity;
DBHelper mDBHelper;
private Context mContext;
private ArrayList<Contact> mContactsArrayList;
public String str4;
private ContactManager aContactManager;
private ArrayList<Contact> ctnList;
@Override
public void onReceive(Context context, Intent intent)
{
//---get the SMS message passed in---
Log.d("SMSBroadcastReceiver", "Yes it calls the onReceive");
Bundle bundle = intent.getExtras();
SmsMessage[] msgs = null;
String str = "";
String str2 = "";
if (bundle != null)
{
//---retrieve the SMS message received---
Object[] pdus = (Object[]) bundle.get("pdus");
msgs = new SmsMessage[pdus.length];
for (int i=0; i<msgs.length; i++){
msgs[i] = SmsMessage.createFromPdu((byte[])pdus[i]);
str2=msgs[i].getOriginatingAddress();
str = msgs[i].getMessageBody().toString();
str4 = str2;
}
if(str.charAt(0)=='#'&&str.length()<=4){
String ns = Context.NOTIFICATION_SERVICE;
NotificationManager notManager =
(NotificationManager) context.getSystemService(ns);
//Configuramos la notificaci�n
int icono = R.drawable.resultadosmnu;
CharSequence textoEstado = "Ask-It notification";
long hora = System.currentTimeMillis();
Notification notif =
new Notification(icono, textoEstado, hora);
CharSequence titulo = "New set of response on Askit";
CharSequence descripcion = "There's available a new set of response on your Survey_Name graph";
Intent notIntent = new Intent(context,
ProyectoAskitActivity.class);
PendingIntent contIntent = PendingIntent.getActivity(
context, 0, notIntent, 0);
notif.setLatestEventInfo(
context, titulo, descripcion, contIntent);
notif.flags |= Notification.FLAG_AUTO_CANCEL;
notManager.notify(icono, notif);
Contact cnt = queryDetailsForContactNumber(str2);
Toast toast1 =
Toast.makeText(context,
cnt.getPhoneNumber(), Toast.LENGTH_SHORT);
toast1.show();
}
}
}
public Contact queryDetailsForContactNumber(String aContactId) {
final String[] projection = new String[] {
Phone._ID, // the contact id column
Phone.DISPLAY_NAME, // the name of the contact
Phone.NUMBER // the id of the column in the data table for the image
};
final Cursor contact = mActivity.managedQuery(
Phone.CONTENT_URI,
projection,
Phone.NUMBER+"="+aContactId, // filter entries on the basis of the contact id
null, // the parameter to which the contact id column is compared to
null);
if(contact.moveToFirst()) {
final int contactId = contact.getInt(
contact.getColumnIndex(Phone._ID));
final String name = contact.getString(
contact.getColumnIndex(Phone.DISPLAY_NAME));
final String number = contact.getString(
contact.getColumnIndex(Phone.NUMBER));
final Contact aContact = new Contact(contactId, name,null,false,number);
return aContact;
}
return null;
}
}
答案 0 :(得分：0)
最后我解决了我的问题，我创建了一个名为contacts的对象类，其中包含所有联系人参数，并创建了一个联系人的数组列表，并用联系人填充它，以便逐一比较信息以获取我需要的信息。 / p>
public class SMSBroadcastReceiver extends BroadcastReceiver {
private static final String SMS_RECEIVED = "android.provider.Telephony.SMS_RECEIVED";
private static final String TAG = "SMSBroadcastReceiver";
DBHelper mDBHelper;
static Context mContext;
private ArrayList<Contact> ctnList;
@Override
public void onReceive(Context context, Intent intent)
{
//---get the SMS message passed in---
Log.d("SMSBroadcastReceiver", "Yes it calls the onReceive");
Bundle bundle = intent.getExtras();
SmsMessage[] msgs = null;
String str = "";
String str2 = "";
if (bundle != null)
{
//---retrieve the SMS message received---
Object[] pdus = (Object[]) bundle.get("pdus");
msgs = new SmsMessage[pdus.length];
for (int i=0; i<msgs.length; i++){
msgs[i] = SmsMessage.createFromPdu((byte[])pdus[i]);
str2=msgs[i].getOriginatingAddress();
str = msgs[i].getMessageBody().toString();
}
if(str.charAt(0)=='#'&&str.length()<=4){
String ns = Context.NOTIFICATION_SERVICE;
ctnList=queryAllContactsWithPhone(context);
Contact ctn = new Contact();
int x = ctnList.size();
int y = 0;
while(x-1>=y){
ctn = ctnList.get(y);
if(ctn.getPhoneNumber().compareTo(str2)==0){
Toast toast1 =
Toast.makeText(context,
ctn.getName(), Toast.LENGTH_LONG);
toast1.show();
}else{
Toast toast1 =
Toast.makeText(context,
str2, Toast.LENGTH_LONG);
toast1.show();
}
y++;
}
}
}
}
public ArrayList<Contact> queryAllContactsWithPhone(Context ct) {
final String[] projection = new String[] {
Phone.CONTACT_ID, // the contact id column
Phone.DISPLAY_NAME, // the contact display name
Phone.NUMBER
};
final String selection = Contacts.HAS_PHONE_NUMBER; // the contact has to have a phone number.
final String sort = Contacts.DISPLAY_NAME+" ASC"; // the contact has to have a phone number.
final Cursor contacts = ct.getContentResolver().query(
Phone.CONTENT_URI, // the uri for contact provider
projection,
null, // if selection = null, retrieve all entries
null, // not required because selection does not contain parameters
sort); // do not order
final int contactIdColumnIndex = contacts.getColumnIndex(Phone.CONTACT_ID);
final int contactDisplayNameColumnIndex = contacts.getColumnIndex(Phone.DISPLAY_NAME);
final int contactPhoneColumnIndex = contacts.getColumnIndex(Phone.NUMBER);
final ArrayList<Contact> contactsArrayList = new ArrayList<Contact>();
if(contacts.moveToFirst()) { // move the cursor to the first entry
while(!contacts.isAfterLast()) { // still a valid entry left?
final int contactId = contacts.getInt(contactIdColumnIndex);
final String contactDisplayName= contacts.getString(contactDisplayNameColumnIndex);
final String Phones = contacts.getString(contactPhoneColumnIndex);
final Contact aContact = new Contact();
aContact.setPhoneNumber(Phones);
aContact.setName(contactDisplayName);
aContact.setId(contactId);
contactsArrayList.add(aContact);
contacts.moveToNext(); // move to the next entry
}
}
contacts.close();
return contactsArrayList;
}
}
答案 1 :(得分：0)
我会在接收器处启动服务而不是这样做。 请参阅此类服务http://developer.android.com/reference/android/app/IntentService.html