我正在创建一个Android应用程序，它使用一个简单的表单从用户那里获取一些信息，然后发送电子邮件到包含这些信息的特定地址。 我正在使用javamail-android库（https://code.google.com/p/javamail-android/）。
我的应用程序可以很好地运行到模拟器中，但是当我单击“提交”按钮时，应用程序会崩溃。这是日志 -
11-12 11:57:50.730 1232-1248/com.android.imran.quickcomplain E/SendMailTask﹕ null
javax.mail.AuthenticationFailedException
at javax.mail.Service.connect(Service.java:319)
at javax.mail.Service.connect(Service.java:169)
at com.android.imran.quickcomplain.GMail.sendEmail(GMail.java:74)
at com.android.imran.quickcomplain.SendMailTask.doInBackground(SendMailTask.java:38)
at android.os.AsyncTask$2.call(AsyncTask.java:287)
at java.util.concurrent.FutureTask.run(FutureTask.java:234)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
at java.lang.Thread.run(Thread.java:841)
11-12 11:57:50.730 1232-1232/com.android.imran.quickcomplain E/AndroidRuntime﹕ FATAL EXCEPTION: main
java.lang.NullPointerException
at com.android.imran.quickcomplain.SendMailTask.onProgressUpdate(SendMailTask.java:50)
at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:647)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:5103)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:525)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
at dalvik.system.NativeStart.main(Native Method)
11-12 11:57:55.306 1232-1232/? I/Process﹕ Sending signal. PID: 1232 SIG: 9
以下是java文件 -
MainActivity.java
package com.android.imran.quickcomplain;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.ImageButton;
import android.widget.Spinner;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
public class MainActivity extends AppCompatActivity {
EditText appellor_name;
EditText appellor_mobileno;
CheckBox make_appellor_anonymous;
EditText victim_name;
EditText victim_mobileno;
CheckBox same_as_appellorinfo;
EditText suspect_name;
EditText suspect_details;
CheckBox i_couldnt_recognize;
Spinner location;
EditText specify_road;
Spinner category;
EditText other_category;
EditText crime_details;
ImageButton addFile;
ImageButton takePhoto;
CheckBox terms_conditions;
Button submit;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//Assigning findViewById
appellor_name = (EditText) findViewById(R.id.appellor_name);
appellor_mobileno = (EditText) findViewById(R.id.appellor_mobileno);
make_appellor_anonymous = (CheckBox) findViewById(R.id.make_appellor_anonymous);
victim_name = (EditText) findViewById(R.id.victim_name);
victim_mobileno = (EditText) findViewById(R.id.victim_mobileno);
same_as_appellorinfo = (CheckBox) findViewById(R.id.same_as_appellorinfo);
suspect_name = (EditText) findViewById(R.id.suspect_name);
suspect_details = (EditText) findViewById(R.id.suspect_details);
i_couldnt_recognize = (CheckBox) findViewById(R.id.i_couldnt_recognize);
location=(Spinner)findViewById(R.id.location);
specify_road = (EditText) findViewById(R.id.specify_road);
category=(Spinner)findViewById(R.id.category);
other_category = (EditText) findViewById(R.id.other_category);
crime_details = (EditText) findViewById(R.id.crime_details);
addFile = (ImageButton) findViewById(R.id.addFile);
takePhoto = (ImageButton) findViewById(R.id.takePhoto);
terms_conditions = (CheckBox) findViewById(R.id.terms_conditions);
submit = (Button) findViewById(R.id.submit);
//close
//Setting the spinner data
SpinnerItemData idata=new SpinnerItemData();
ArrayList<SetItemData> splocation=new ArrayList<>();
for (int i=0; i<idata.locationdata.length; i++)
splocation.add(new SetItemData(idata.locationdata[i], R.drawable.location));
ArrayList<SetItemData> spcategory=new ArrayList<>();
for (int j=0; j<idata.categorydata.length; j++)
spcategory.add(new SetItemData(idata.categorydata[j], R.drawable.category));
SpinnerAdapter locadapter=new SpinnerAdapter(this,
R.layout.spinner_layout,R.id.txt,splocation);
location.setAdapter(locadapter);
SpinnerAdapter catadapter=new SpinnerAdapter(this,
R.layout.spinner_layout,R.id.txt,spcategory);
category.setAdapter(catadapter);
//close
//Submit email
submit.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
Log.i("SendMailActivity", "Send Button Clicked.");
String fromEmail = "******@gmail.com";
String fromPassword ="********";
String toEmails = "someone@gmail.com";
List<String> toEmailList = Arrays.asList(toEmails.split("\\s*,\\s*"));
//Log.i("MainActivity", "To List: " + toEmailList);
String emailSubject = category.getSelectedItem().toString() + " in " + location.getSelectedItem().toString();
String emailBody = crime_details.getText().toString()+"\nVictim's Name: "+victim_name.getText().toString()+
"\nVictim's Contact: "+victim_mobileno.getText().toString()+
"\nSuspect Details: "+suspect_details.getText().toString()+"\n";
new SendMailTask(MainActivity.this).execute(fromEmail,
fromPassword, toEmailList, emailSubject, emailBody);
}
});
}
}
GMail.java
package com.android.imran.quickcomplain;
import java.io.UnsupportedEncodingException;
import java.util.List;
import java.util.Properties;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import android.util.Log;
public class GMail {
final String emailPort = "587";// gmail's smtp port
final String smtpAuth = "true";
final String starttls = "true";
final String emailHost = "smtp.gmail.com";
String fromEmail;
String fromPassword;
List<String> toEmailList;
String emailSubject;
String emailBody;
Properties emailProperties;
Session mailSession;
MimeMessage emailMessage;
public GMail() {}
public GMail(String fromEmail, String fromPassword,
List<String> toEmailList, String emailSubject, String emailBody) {
this.fromEmail = fromEmail;
this.fromPassword = fromPassword;
this.toEmailList = toEmailList;
this.emailSubject = emailSubject;
this.emailBody = emailBody;
emailProperties = System.getProperties();
emailProperties.put("mail.smtp.port", emailPort);
emailProperties.put("mail.smtp.auth", smtpAuth);
emailProperties.put("mail.smtp.starttls.enable", starttls);
Log.i("GMail", "Mail server properties set.");
}
public MimeMessage createEmailMessage() throws AddressException,
MessagingException, UnsupportedEncodingException {
mailSession = Session.getDefaultInstance(emailProperties, null);
emailMessage = new MimeMessage(mailSession);
emailMessage.setFrom(new InternetAddress(fromEmail, fromEmail));
for (String toEmail : toEmailList) {
Log.i("GMail","toEmail: "+toEmail);
emailMessage.addRecipient(Message.RecipientType.TO,
new InternetAddress(toEmail));
}
emailMessage.setSubject(emailSubject);
emailMessage.setContent(emailBody, "text/html");// for a html email
// emailMessage.setText(emailBody);// for a text email
Log.i("GMail", "Email Message created.");
return emailMessage;
}
public void sendEmail() throws AddressException, MessagingException {
Transport transport = mailSession.getTransport("smtp");
transport.connect(emailHost, fromEmail, fromPassword);
Log.i("GMail","allrecipients: "+emailMessage.getAllRecipients());
transport.sendMessage(emailMessage, emailMessage.getAllRecipients());
transport.close();
Log.i("GMail", "Email sent successfully.");
}
}
SendMailTask.java
package com.android.imran.quickcomplain;
import java.util.List;
import android.app.Activity;
import android.app.ProgressDialog;
import android.os.AsyncTask;
import android.util.Log;
public class SendMailTask extends AsyncTask {
private ProgressDialog statusDialog;
private Activity sendMailActivity;
public SendMailTask(Activity activity) {
sendMailActivity = activity;
}
protected void onPreExecute() {
statusDialog = new ProgressDialog(sendMailActivity);
statusDialog.setMessage("Getting ready...");
statusDialog.setIndeterminate(false);
statusDialog.setCancelable(false);
statusDialog.show();
}
@Override
protected Object doInBackground(Object... args) {
try {
Log.i("SendMailTask", "About to instantiate GMail...");
publishProgress("Processing input....");
GMail androidEmail = new GMail(args[0].toString(),
args[1].toString(), (List) args[2], args[3].toString(),
args[4].toString());
publishProgress("Preparing mail message....");
androidEmail.createEmailMessage();
publishProgress("Sending email....");
androidEmail.sendEmail();
publishProgress("Email Sent.");
Log.i("SendMailTask", "Mail Sent.");
} catch (Exception e) {
publishProgress(e.getMessage());
Log.e("SendMailTask", e.getMessage(), e);
}
return null;
}
@Override
public void onProgressUpdate(Object... values) {
statusDialog.setMessage(values[0].toString());
}
@Override
public void onPostExecute(Object result) {
statusDialog.dismiss();
}
}
activity_main.xml中
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/scroll"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true"
android:stackFromBottom="true"
android:transcriptMode="alwaysScroll" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:background="@drawable/main_layout_style">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="10dp"
android:background="#3b004f"
android:text="Quick Complain"
android:textColor="#FFF"
android:textSize="20sp"
android:gravity="center"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Appellor's informations"
android:textColor="#3b004f"
android:textSize="15sp"
android:padding="10dp"
android:layout_marginLeft="20dp"/>
<EditText
android:id="@+id/appellor_name"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@drawable/default_view_style"
android:padding="10dp"
android:layout_marginLeft="20dp"
android:layout_marginRight="20dp"
android:layout_marginBottom="10dp"
android:hint="Enter your name (Optional)"
android:textSize="15sp"
android:textColorHint="#9C9C9C"/>
<EditText
android:id="@+id/appellor_mobileno"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@drawable/default_view_style"
android:padding="10dp"
android:layout_marginLeft="20dp"
android:layout_marginRight="20dp"
android:layout_marginBottom="10dp"
android:hint="Enter your mobile number (Optional)"
android:textSize="15sp"
android:textColorHint="#9C9C9C"/>
<CheckBox
android:id="@+id/make_appellor_anonymous"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Make me anonymous"
android:layout_marginLeft="20dp"
android:textColor="#545454" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Victim's informations"
android:textColor="#3b004f"
android:textSize="15sp"
android:padding="10dp"
android:layout_marginTop="20dp"
android:layout_marginLeft="20dp"/>
<EditText
android:id="@+id/victim_name"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@drawable/default_view_style"
android:padding="10dp"
android:layout_marginLeft="20dp"
android:layout_marginRight="20dp"
android:layout_marginBottom="10dp"
android:hint="Enter victim's name (Optional)"
android:textSize="15sp"
android:textColorHint="#9C9C9C"/>
<EditText
android:id="@+id/victim_mobileno"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@drawable/default_view_style"
android:padding="10dp"
android:layout_marginLeft="20dp"
android:layout_marginRight="20dp"
android:layout_marginBottom="10dp"
android:hint="Enter victim's mobile number (Optional)"
android:textSize="15sp"
android:textColorHint="#9C9C9C"/>
<CheckBox
android:id="@+id/same_as_appellorinfo"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Same as appellor's informations"
android:layout_marginLeft="20dp"
android:layout_marginBottom="10dp"
android:textColor="#545454" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Suspect's informations"
android:textColor="#3b004f"
android:textSize="15sp"
android:padding="10dp"
android:layout_marginTop="20dp"
android:layout_marginLeft="20dp"/>
<EditText
android:id="@+id/suspect_name"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@drawable/default_view_style"
android:padding="10dp"
android:layout_marginLeft="20dp"
android:layout_marginRight="20dp"
android:layout_marginBottom="10dp"
android:hint="Enter suspect's name (Optional)"
android:textSize="15sp"
android:textColorHint="#9C9C9C"/>
<EditText
android:id="@+id/suspect_details"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@drawable/default_view_style"
android:padding="10dp"
android:layout_marginLeft="20dp"
android:layout_marginRight="20dp"
android:layout_marginBottom="10dp"
android:hint="Enter suspect's details (Optional)"
android:inputType="textMultiLine"
android:gravity="top|left"
android:lines="3"
android:textSize="15sp"
android:textColorHint="#9C9C9C"/>
<CheckBox
android:id="@+id/i_couldnt_recognize"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="I couldn't recognize"
android:layout_marginLeft="20dp"
android:layout_marginBottom="10dp"
android:textColor="#545454" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Location informations"
android:textColor="#3b004f"
android:textSize="15sp"
android:padding="10dp"
android:layout_marginTop="20dp"
android:layout_marginLeft="20dp"/>
<Spinner
android:id="@+id/location"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:layout_marginBottom="10dp"
android:padding="10dp">
</Spinner>
<EditText
android:id="@+id/specify_road"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@drawable/default_view_style"
android:padding="10dp"
android:layout_marginLeft="20dp"
android:layout_marginRight="20dp"
android:hint="Specify road (Optional)"
android:textSize="15sp"
android:textColorHint="#9C9C9C"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Crime category"
android:textColor="#3b004f"
android:textSize="15sp"
android:padding="10dp"
android:layout_marginTop="20dp"
android:layout_marginLeft="20dp"/>
<Spinner
android:id="@+id/category"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:layout_marginBottom="10dp"
android:padding="10dp">
</Spinner>
<EditText
android:id="@+id/other_category"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@drawable/default_view_style"
android:padding="10dp"
android:layout_marginLeft="20dp"
android:layout_marginRight="20dp"
android:hint="Others (Optional)"
android:textSize="15sp"
android:textColorHint="#9C9C9C"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Crime details (Compulsory)"
android:textColor="#3b004f"
android:textSize="15sp"
android:padding="10dp"
android:layout_marginTop="20dp"
android:layout_marginLeft="20dp"/>
<EditText
android:id="@+id/crime_details"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@drawable/default_view_style"
android:padding="10dp"
android:layout_marginLeft="20dp"
android:layout_marginRight="20dp"
android:hint="Write crime details (Compulsory)"
android:textSize="15sp"
android:inputType="textMultiLine"
android:gravity="top|left"
android:lines="8"
android:minLines="8"
android:scrollbars="vertical"
android:textColorHint="#9C9C9C" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_marginLeft="20dp"
android:layout_marginRight="20dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Add attachment: "
android:padding="10dp"
android:layout_margin="5dp"
android:textColor="#3b004f"/>
<ImageButton
android:id="@+id/addFile"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/file"
android:background="@null"
android:gravity="center"
android:layout_margin="10dp"
/>
<ImageButton
android:id="@+id/takePhoto"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/camera"
android:background="@null"
android:gravity="center"
android:layout_margin="10dp"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<CheckBox
android:id="@+id/terms_conditions"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="By clicking submit, I agree to the terms & conditions."
android:layout_marginLeft="20dp"
android:layout_marginRight="20dp"
android:layout_marginBottom="10dp"
android:layout_marginTop="10dp"
android:textColor="#545454" />
<Button
android:id="@+id/submit"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@drawable/btn_style"
android:text="Submit"
android:textColor="#FFF"
android:textAllCaps="false"
android:textSize="15sp"
android:layout_marginLeft="150dp"
android:layout_marginRight="150dp"
android:layout_marginBottom="20dp"
android:layout_marginTop="20dp"/>
</LinearLayout>
</LinearLayout>
</ScrollView>
我已添加清单文件的权限：
<uses-permission android:name="android.permission.INTERNET"/>
应用程序崩溃的原因是什么？我无法识别查看日志。请帮我解决一下。