我正在尝试实施联系人应用。
在MyContactsViewController中，我试图访问Contacts，如果授予访问权限，我将从我的地址簿中获取联系人。 getAllContacts是我的模型类（单例），它有一个名为- (void)viewDidLoad {
[super viewDidLoad];
contactHandler = [ContactHandler sharedInstance];
if(!self.accessGranted){
NSOperationQueue *queue =[[ NSOperationQueue alloc]init];
[queue performSelectorOnMainThread:@selector(getAccessToAddressBook) withObject:self waitUntilDone:YES];
contactList = [contactHandler getAllContacts];
}
else{
contactList = [contactHandler getAllContacts];
}
}
-(BOOL)getAccessToAddressBook{
CNContactStore * contactStore = [[CNContactStore alloc] init];
if( [CNContactStore authorizationStatusForEntityType:CNEntityTypeContacts] == CNAuthorizationStatusNotDetermined){
[contactStore requestAccessForEntityType:CNEntityTypeContacts completionHandler:^(BOOL granted, NSError * _Nullable error) {
if(granted){
self.accessGranted = YES;
}
else{
self.accessGranted = NO;
}
}];
}
else if( [CNContactStore authorizationStatusForEntityType:CNEntityTypeContacts]== CNAuthorizationStatusAuthorized){
self.accessGranted = YES;
}
else{
self.accessGranted = NO;
}
return self.accessGranted;
}
的方法来获取NSMutableArray中的联系人。
Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[NSOperationQueue getAccessToAddressBook]: unrecognized selector sent to instance 0x137630700'
但是我收到了这个错误 -
.gridster {
background: #004756;
margin: 0 auto;
opacity: .8;
-webkit-transition: opacity .6s;
-moz-transition: opacity .6s;
-o-transition: opacity .6s;
-ms-transition: opacity .6s;
transition: opacity .6s;
text-align: center;
}
.gridster > * {
margin: 0 auto;
-webkit-transition: height .4s;
-moz-transition: height .4s;
-o-transition: height .4s;
-ms-transition: height .4s;
transition: height .4s;
}
.gridster .gs_w{
z-index: 2;
position: absolute;
background: #FFF;
cursor: pointer;
-webkit-box-shadow: 0 0 5px rgba(0,0,0,0.3);
box-shadow: 0 0 5px rgba(0,0,0,0.3);
}
.ready .gs_w:not(.preview-holder) {
-webkit-transition: opacity .3s, left .3s, top .3s;
-moz-transition: opacity .3s, left .3s, top .3s;
-o-transition: opacity .3s, left .3s, top .3s;
transition: opacity .3s, left .3s, top .3s;
}
.ready .gs_w:not(.preview-holder) {
-webkit-transition: opacity .3s, left .3s, top .3s, width .3s, height .3s;
-moz-transition: opacity .3s, left .3s, top .3s, width .3s, height .3s;
-o-transition: opacity .3s, left .3s, top .3s, width .3s, height .3s;
transition: opacity .3s, left .3s, top .3s, width .3s, height .3s;
}
.gridster .preview-holder {
z-index: 1;
position: absolute;
background-color: #fff;
border-color: #fff;
opacity: 0.3;
}
.gridster .player-revert {
z-index: 10!important;
-webkit-transition: left .3s, top .3s!important;
-moz-transition: left .3s, top .3s!important;
-o-transition: left .3s, top .3s!important;
transition: left .3s, top .3s!important;
}
.gridster .dragging {
z-index: 10!important;
-webkit-transition: all 0s !important;
-moz-transition: all 0s !important;
-o-transition: all 0s !important;
transition: all 0s !important;
}
.gridWrapper {
width: 100%;
overflow-x: scroll;
overflow-y: hidden;
}
.gridAlignerWrapper {
display: table;
width: 100%;
height: 100%;
}
.gridAligner {
width: 100%;
display: table-cell;
}
body {
background-color: #EEEEEE;
font-family: 'Helvetica Neue', Arial, sans-serif;
-webkit-font-smoothing: antialiased;
font-size: x-small;
color: #666666;
text-align: center;
vertical-align: middle;
}
ul, ol {
list-style: none;
margin:0 auto;
text-align: center;
vertical-align: middle;
}
h1 {
margin-bottom: 12px;
text-align: center;
font-size: 30px;
font-weight: 400;
}
h3 {
font-size: 25px;
font-weight: 600;
color: white;
}
/* Uncomment this if you set helper : "clone" in draggable options */
/*.gridster .player {
opacity:0;
}*/
任何人都可以帮忙。
答案 0 :(得分：1)
你的问题就在这一行：
[queue performSelectorOnMainThread:@selector(getAccessToAddressBook) withObject:self waitUntilDone:YES];
当queue拥有此选择器的人getAccessToAddressBook时，您要求self执行getAccessToAddressBook
如果要在队列中运行方法package com.example.trynot;
import java.io.IOException;
import java.util.Calendar;
import java.util.Locale;
import java.util.Properties;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.mail.Address;
import javax.mail.BodyPart;
import javax.mail.Flags;
import javax.mail.Folder;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Multipart;
import javax.mail.NoSuchProviderException;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Store;
import javax.mail.Flags.Flag;
import javax.mail.search.FlagTerm;
import com.example.trynot.MainActivity;
import com.example.trynot.R;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.app.ActivityManager;
import android.app.ActivityManager.RunningServiceInfo;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.database.sqlite.SQLiteDatabase;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Handler;
import android.sax.StartElementListener;
import android.speech.tts.TextToSpeech;
import android.support.v4.app.NotificationCompat;
import android.support.v4.app.NotificationCompat.Builder;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Toast;
import android.speech.tts.TextToSpeech;
public class MainActivity extends Activity {
public static Context c,b;
public static Intent serviceIntent;
private static int myNotificationId;
public static class ReadMailSample extends AsyncTask<String,String,Void> implements TextToSpeech.OnInitListener{
Message message;
private TextToSpeech tts;
static String command, phoneNumber, type, priority, name, time_stamp, imei, opt1, opt2, opt3, fromSubString;
Properties properties = null;
private Session session = null;
private Store store = null;
private Folder inbox = null;
String userName="avarote1994@gmail.com" ; // PROVIDE RECEPIENT EMAIL ID
String password="amul11111994" ; // PROVIDE RECEPIENT PASSWORD
static SQLiteDatabase db;
boolean flag=false;
Context acn;
//private Bundle savedInstanceState;
protected Void doInBackground(String...params){ // SEPARATE THREAD TO RUN IN THE BACKGROUND
try{
readMails();
}
catch(Exception e){
Logger logger = Logger.getAnonymousLogger();
logger.log(Level.INFO, "an exception was thrown", e);
}
return null;
}
ReadMailSample(SQLiteDatabase db){
this.db = db;
}
ReadMailSample(){
}
ReadMailSample(Context cn){
acn=cn;
}
@Override
protected void onProgressUpdate(String... values) {
try {
System.out.println("---------------------adasd-----------" + time_stamp);
speakOut();
showNotification();
}
catch(Exception e){
e.printStackTrace();
}
}
public void onDestroy() {
// Don't forget to shutdown tts!
if (tts != null) {
tts.stop();
tts.shutdown();
}
//super.onDestroy();
}
@Override
public void onInit(int status) {
if (status == TextToSpeech.SUCCESS) {
int result = tts.setLanguage(Locale.US);
if (result == TextToSpeech.LANG_MISSING_DATA
|| result == TextToSpeech.LANG_NOT_SUPPORTED) {
Log.e("TTS", "This Language is not supported");
} else {
speakOut();
}
} else {
Log.e("TTS", "Initilization Failed!");
}
}
private void speakOut() {
tts.speak(command, TextToSpeech.QUEUE_FLUSH, null);
}
public void showNotification() {
PendingIntent notificationIntent = preparePendingIntent();
Notification notification = createBasicNotification(notificationIntent);
displayNotification(notification);
}
@SuppressLint("InlinedApi")
private PendingIntent preparePendingIntent() {
Intent intent=new Intent(c,MainActivity.class);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
PendingIntent pendingIntent = PendingIntent.getActivity(
c,
0,
intent,
PendingIntent.FLAG_UPDATE_CURRENT);
return pendingIntent;
}
private Notification createBasicNotification(PendingIntent notificationIntent) {
NotificationCompat.Builder builder = new Builder(c);
long[] vibrationPattern = {0, 200, 800, 200, 600, 200, 400, 200, 200, 200, 100, 200, 50, 200, 50, 200, 50, 200, 50, 200};
Notification notification = builder
.setSmallIcon(R.drawable.ic_launcher)
.setContentTitle("Medication Reminder")
.setContentText(command)
.setAutoCancel(true)
.setContentIntent(notificationIntent)
.setWhen(Calendar.getInstance().getTimeInMillis() + 1000*60+60)
.setVibrate(vibrationPattern)
.build();
return notification;
}
private void displayNotification(Notification notification) {
NotificationManager notificationManager = (NotificationManager)c.getSystemService(Context.NOTIFICATION_SERVICE);
myNotificationId=(int) System.currentTimeMillis();
notificationManager.notify(myNotificationId , notification);
speakOut();
}
public void readMails() throws IOException{
System.out.println("READMAIL hi");
properties = new Properties();
// SETTING UP AN IMAP SERVER TO ACCESS THE RECEPIENT'S EMAIL
properties.setProperty("mail.host", "imap.gmail.com");
properties.setProperty("mail.port", "995");
properties.setProperty("mail.transport.protocol", "imaps");
while(true){// CONTINUOUSLY MONITOR INCOMING MAIL'S
//String cq = "select * from Login4";
//Cursor c = db.rawQuery(cq, null);
// c.moveToFirst();
//final String userName = c.getString(0);
//final String password = c.getString(1);
//String cloud = "avarote1994@gmail.com";
// AUTHENTICATE AND GET AN INSTANCE OF THE SESSION FROM THE SERVER
session = Session.getInstance(properties,new javax.mail.Authenticator() {
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(userName, password);
}
});
try {
store = session.getStore("imaps");
store.connect();
inbox = store.getFolder("INBOX"); // ACCESS THE INBOX OF THE RECEPIENT'S EMAIL ID
inbox.open(Folder.READ_WRITE); // OPEN THE INBOX IN READ-WRITE MODE
Message messages[] = inbox.search(new FlagTerm(new Flags(Flag.SEEN), false)); //SEARCH INBOX FOR ANY UNREAD MAILS
System.out.println("Number of mails = " + messages.length);
for (int i = 0; i < messages.length; i++) { // PROCESS ALL THE UNREAD MAILS
message = messages[i];
Address[] from = message.getFrom();
String from1 = from[0].toString();
System.out.println(from1);
if(from1.contains("<")){
int start = from1.indexOf("<");
int end = from1.indexOf(">");
fromSubString = from1.substring(start+1,end); // RETRIEVE THE SENDER'S EMAIL ID
} else{
fromSubString = from1;
}
System.out.println(fromSubString);
//if(fromSubString.equals(cloud)){ // CHECK WHETHER THE MAIL IS FROM THE CLOUD
String[] subject = message.getSubject().split(","); // SPLIT THE SUBJECT
System.out.println("hi");
type = subject[0]; // STORE THE DETAILS IN RESPECTIVE VARIABLES
phoneNumber =subject[1];
name = subject[2];
System.out.println(type);
System.out.println(phoneNumber);
System.out.println(name);
//String body=message.getContentType().toString();
// System.out.print(body);
processMessageBody(message);
System.out.println("--------------------------------");
// }
}
inbox.close(true);
store.close();
}
catch (NoSuchProviderException e) {
e.printStackTrace();
}
catch (MessagingException e) {
e.printStackTrace();
}
}
}
public void processMessageBody(Message message) {
try {
Object content = message.getContent();
String msg=content.toString();
System.out.println(msg);
if (content instanceof Multipart) { // IF MAIL HAS MULTIPART MESSAGE
Multipart multiPart = (Multipart) content;
procesMultiPart(multiPart);
}
else{
System.out.println("Content = "+content);
processSinglepart(content.toString());
}
}
catch (IOException e) {
e.printStackTrace();
}
catch (MessagingException e) {
e.printStackTrace();
}
}
public void processSinglepart(String content){
String[] body = content.split(","); // SPLIT THE CONTENTS OF THE BODY
System.out.println('1');
time_stamp = body[0]; // STORE THE DETAILS IN RESPECTIVE VARIABLES
command = body[3];
System.out.println(time_stamp);
//tts.speak(time_stamp, TextToSpeech.QUEUE_FLUSH, null);
publishProgress(command);
}
public void procesMultiPart(Multipart content) {
System.out.println("amulya");
try {
BodyPart bodyPart = content.getBodyPart(0); // RETRIEVE THE CONTENTS FROM THE BODY
Object o;
o = bodyPart.getContent();
if (o instanceof String) {
System.out.println("Content Multipart= "+o.toString());
processSinglepart(o.toString());
}
}
catch (IOException e) {
e.printStackTrace();
}
catch (MessagingException e) {
e.printStackTrace();
}
}
}
@Override
protected void onCreate(Bundle savedInstanceState) {
c = this.getApplicationContext();
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if (!isMyServiceRunning()){
serviceIntent = new Intent(getApplicationContext(),MyService.class);
c.startService(serviceIntent);
}
final SQLiteDatabase db = openOrCreateDatabase("GDV_DB_NEW_0711", Context.MODE_PRIVATE, null);
db.execSQL("CREATE TABLE IF NOT EXISTS Login4(mailid VARCHAR,password VARCHAR);");
db.execSQL("CREATE TABLE IF NOT EXISTS CLIENT_DATA(type VARCHAR,time_stamp VARCHAR,priority VARCHAR,result VARCHAR,opt1 VARCHAR,opt2 VARCHAR,opt3 VARCHAR);");
ReadMailSample rd=new ReadMailSample(getApplicationContext());
System.out.println("hello");
rd.execute();
System.out.println("------xvsdfsdfsd---------aefaefa-----------------");
}
private boolean isMyServiceRunning() {
ActivityManager manager = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);
for (RunningServiceInfo service : manager.getRunningServices(Integer.MAX_VALUE)) {
if (MyService.class.getName().equals(service.service.getClassName())) {
return true;
}
}
return false;
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
，可以使用- addOperationWithBlock:
答案 1 :(得分：0)
就像在这一行：performSelectorOnMainThread你正在传递withObject:self，在方法定义中，即(BOOL)getAccessToAddressBook你没有使用它，这导致了崩溃，所以make {{1如果你不想将任何对象或值传递给方法。
更改此行： -
withObject:nil到此： -
[queue performSelectorOnMainThread:@selector(getAccessToAddressBook) withObject:self waitUntilDone:YES];
或者更好的方法是这样写： -
[queue performSelectorOnMainThread:@selector(getAccessToAddressBook) withObject:nil waitUntilDone:YES];