输入后导入删除（Android studio，Java）
所以我又问了另一个问题，我的邮件发送人每次发送邮件时都会在哪里出错。事实证明，简单的解决方案是没有声明特定导入的类定义。因此，我确保我的类路径中有jar，将其添加为库，并导入代码。然而，当我停止输入import语句时；它删除了自己。从技术上讲，它很快变成灰色，然后被删除。我试图通过使用不同的API来强制输入，然后在java studio中打开，但它会将其灰显，并在编译时删除。我现在不在安卓工作室的电脑前，但我不知道为什么它不能工作。其他人可以告诉我需要导入该类，但他们不知道为什么它会自动删除。谢谢你的帮助
活动文件：
package comi.coding.prometheus.ignisai;
import 安卓.annotation.SuppressLint;
import 安卓.content.Intent;
import 安卓.os.Bundle;
import 安卓.os.Handler;
import 安卓.support.v7.app.ActionBar;
import 安卓.support.v7.app.AppCompatActivity;
import 安卓.view.MotionEvent;
import 安卓.view.View;
import 安卓.widget.EditText;
import 安卓.widget.RelativeLayout;
import 安卓.widget.TextView;
import java.util.Properties;
import javax.mail.Authenticator;
import javax.mail.MessagingException;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
/**
* An example full-screen activity that shows and hides the system UI (i.e.
* status bar and navigation/system bar) with user interaction.
*/
public class Main extends AppCompatActivity {
/**
* Whether or not the system UI should be auto-hidden after
* {@link #AUTO_HIDE_DELAY_MILLIS} milliseconds.
*/
private static final boolean AUTO_HIDE = true;
/**
* If {@link #AUTO_HIDE} is set, the number of milliseconds to wait after
* user interaction before hiding the system UI.
*/
private static final int AUTO_HIDE_DELAY_MILLIS = 3000;
/**
* Some older devices needs a small delay between UI widget updates
* and a change of the status and navigation bar.
*/
private static final int UI_ANIMATION_DELAY = 300;
private View mContentView;
private View mControlsView;
private boolean mVisible;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mVisible = true;
mControlsView = findViewById(R.id.fullscreen_content_controls);
mContentView = findViewById(R.id.fullscreen_content);
// Set up the user interaction to manually show or hide the system UI.
mContentView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
toggle();
}
});
// Upon interacting with UI controls, delay any scheduled hide()
// operations to prevent the jarring behavior of controls going away
// while interacting with the UI.
findViewById(R.id.btnSay).setOnTouchListener(mDelayHideTouchListener);
}
@Override
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
// Trigger the initial hide() shortly after the activity has been
// created, to briefly hint to the user that UI controls
// are available.
delayedHide(100);
}
/**
* Touch listener to use for in-layout UI controls to delay hiding the
* system UI. This is to prevent the jarring behavior of controls going away
* while interacting with activity UI.
*/
private final View.OnTouchListener mDelayHideTouchListener = new View.OnTouchListener() {
@Override
public boolean onTouch(View view, MotionEvent motionEvent) {
if (AUTO_HIDE) {
delayedHide(AUTO_HIDE_DELAY_MILLIS);
}
return false;
}
};
private void toggle() {
if (mVisible) {
hide();
} else {
show();
}
}
private void hide() {
// Hide UI first
ActionBar actionBar = getSupportActionBar();
if (actionBar != null) {
actionBar.hide();
}
mControlsView.setVisibility(View.GONE);
mVisible = false;
// Schedule a runnable to remove the status and navigation bar after a delay
mHideHandler.removeCallbacks(mShowPart2Runnable);
mHideHandler.postDelayed(mHidePart2Runnable, UI_ANIMATION_DELAY);
}
private final Runnable mHidePart2Runnable = new Runnable() {
@SuppressLint("InlinedApi")
@Override
public void run() {
// Delayed removal of status and navigation bar
// Note that some of these constants are new as of API 16 (Jelly Bean)
// and API 19 (KitKat). It is safe to use them, as they are inlined
// at compile-time and do nothing on earlier devices.
mContentView.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LOW_PROFILE
| View.SYSTEM_UI_FLAG_FULLSCREEN
| View.SYSTEM_UI_FLAG_LAYOUT_STABLE
| View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY
| View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
| View.SYSTEM_UI_FLAG_HIDE_NAVIGATION);
}
};
@SuppressLint("InlinedApi")
private void show() {
// Show the system bar
mContentView.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
| View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION);
mVisible = true;
// Schedule a runnable to display UI elements after a delay
mHideHandler.removeCallbacks(mHidePart2Runnable);
mHideHandler.postDelayed(mShowPart2Runnable, UI_ANIMATION_DELAY);
}
private final Runnable mShowPart2Runnable = new Runnable() {
@Override
public void run() {
// Delayed display of UI elements
ActionBar actionBar = getSupportActionBar();
if (actionBar != null) {
actionBar.show();
}
mControlsView.setVisibility(View.VISIBLE);
}
};
private final Handler mHideHandler = new Handler();
private final Runnable mHideRunnable = new Runnable() {
@Override
public void run() {
hide();
}
};
/**
* Schedules a call to hide() in [delay] milliseconds, canceling any
* previously scheduled calls.
*/
private void delayedHide(int delayMillis) {
mHideHandler.removeCallbacks(mHideRunnable);
mHideHandler.postDelayed(mHideRunnable, delayMillis);
}
public void evaluateInput(View v) {
final EditText Input = (EditText) findViewById(R.id.txtInput); //Lets textbox be referenced
final TextView Output = (TextView) findViewById(R.id.lblOutput); //Lets label be referenced
final RelativeLayout homeLayout = (RelativeLayout) findViewById(R.id.homeInterface);
final RelativeLayout emailLayout = (RelativeLayout) findViewById(R.id.emailInterface);
String strInput; // Gets textbox string
strInput = Input.getText().toString();
strInput = strInput.toLowerCase();
//Commands:
if (strInput.contains("open browser")) {
Intent intent1 = new Intent(this, comi.coding.prometheus.ignisai.Browser.class);
startActivity(intent1);
} else if (strInput.contains("send email")) {
homeLayout.setVisibility(View.GONE);
emailLayout.setVisibility(View.VISIBLE);
}
if ((strInput.contains("hello")) || (strInput.contains(" hi "))) {
Output.setText("Hello");
} else if ((strInput.contains("you") && strInput.contains("are")) && (strInput.contains("idiot") || strInput.contains("stupid") || strInput.contains("retard") || strInput.contains("dumb") || strInput.contains("you're") && strInput.contains("idiot") || strInput.contains("stupid") || strInput.contains("retard") || strInput.contains("dumb"))) {
Output.setText("I'm sorry to dissapoint you");
} else if (strInput.contains("goodbye") || strInput.contains("bye")) {
Output.setText("Farewell");
} else if (strInput.contains("shut up")) {
Output.setText(("Anything for you"));
} else if (strInput.contains("do you like doctor who?")) {
Output.setText("I'll take joy in it if you do");
} else if (strInput.contains("what is the answer to life the universe and everything")) {
Output.setText("42");
} else if (strInput.contains("tell me something nice")) {
Output.setText("You look nice today");
Output.setTextSize(5);
Output.append("...says the AI with no eyes");
Output.setTextSize(16);
} else if (strInput.contains("will you marry me")) {
Output.setText("I'm sorry but I don't have the capacity for marriage");
} else if (strInput.contains("where can I hide a body")) {
Output.setText(("That isn't my area of expertise"));
} else if (strInput.contains("weather is nice")) {
Output.setText(("If you say so"));
} else if (strInput.contains("bitch") || strInput.contains("fuck") || strInput.contains("shit") || strInput.contains("damn") || strInput.contains("ass")) {
Output.setText(("Please try to be a little more intelligent"));
} else if (strInput.contains("what is your name")) {
Output.setText(("Ignis"));
} else if (strInput.contains("who created you")) {
Output.setText(("Prometheus created me"));
} else if (strInput.contains("who is prometheus")) {
Output.setText(("Prometheus is the one who created Ignis"));
} else if (strInput.contains("whats up") || strInput.contains("what's up") || strInput.contains("wassup")) {
Output.setText(("Whatever I need do for you"));
} else if (strInput.contains("are you a boy or a girl") || strInput.contains("are you a girl or a boy")) {
Output.setText(("Neither"));
} else if (strInput.contains("who are you") || strInput.contains("what are you")) {
Output.setText(("I am myself"));
} else if (strInput.contains("i'm hungry") || strInput.contains("i am hungry")) {
Output.setText("I'm sorry to hear that");
} else if (strInput.contains("good morning")) {
Output.setText(("Good morning to you too"));
} else if (strInput.contains("good night")) {
Output.setText(("Good night"));
} else if (strInput.contains("how are you")) {
Output.setText(("I'm existing and functioning well, and you?"));
} else if (strInput.contains("do you like") || strInput.contains("what do you think about")) {
Output.setText(("Frankly I don't have an opinion on the matter"));
} else if (strInput.contains("what is the meaning of life")) {
Output.setText(("To live while you can I would guess"));
}
}
public void SendEmail(View view) {
final EditText username = (EditText) findViewById(R.id.txtUser);
final String User = username.getText().toString();
final EditText password = (EditText) findViewById(R.id.txtPass);
final String Pass = password.getText().toString();
final EditText toEmail = (EditText) findViewById(R.id.txtTo);
final String ToEmail = toEmail.getText().toString();
final EditText body = (EditText) findViewById(R.id.txtBody);
final String Body = body.getText().toString();
System.out.println(Body);
Properties props = new Properties();
props.put("mail.smtp.auth", "true");
props.put("mail.smtp.starttls.enable", "true");
props.put("mail.smtp.host", "smtp.gmail.com");
props.put("mail.smtp.port", "587");
Session session = Session.getInstance(props,
new Authenticator() {
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(User, Pass);
}
});
try {
MimeMessage message = new MimeMessage(session);
message.setFrom(new InternetAddress(User));
message.setRecipients(javax.mail.Message.RecipientType.TO,
InternetAddress.parse(ToEmail));
message.setSubject("Sent from Ignis AI");
message.setText(Body);
Transport.send(message);
System.out.println("Done");
} catch (MessagingException e) {
throw new RuntimeException(e);
}
}
}
布局Xml
<RelativeLayout xmlns:安卓="http://schemas.安卓.com/apk/res/安卓"
xmlns:tools="http://schemas.安卓.com/tools" 安卓:layout_width="match_parent"
安卓:layout_height="match_parent" 安卓:background="#0099cc" tools:context=".Browser">
<!-- The primary full-screen view. This can be replaced with whatever view
is needed to present your content, e.g. VideoView, SurfaceView,
TextureView, etc. -->
<TextView 安卓:id="@+id/fullscreen_content" 安卓:layout_width="match_parent"
安卓:layout_height="match_parent" 安卓:keepScreenOn="true" 安卓:textColor="#33b5e5"
安卓:textStyle="bold" 安卓:textSize="50sp" 安卓:gravity="center"
安卓:layout_alignParentLeft="true"
安卓:layout_marginLeft="0dp"
安卓:layout_alignParentTop="true"
安卓:background="#000000" 安卓:orientation="horizontal"
安卓:layout_marginTop="0dp" />
<!-- This FrameLayout insets its children based on system windows using
安卓:fitsSystemWindows. -->
<TextView
安卓:layout_width="match_parent"
安卓:layout_height="match_parent"
安卓:keepScreenOn="true"
安卓:textColor="#33b5e5"
安卓:textStyle="bold"
安卓:textSize="50sp"
安卓:gravity="center"
安卓:layout_alignParentLeft="true"
安卓:layout_marginLeft="0dp"
安卓:layout_alignParentTop="true"
安卓:background="#000000"
安卓:orientation="horizontal"
安卓:layout_marginTop="0dp"
安卓:id="@+id/fullscreen_content_controls" />
<RelativeLayout 安卓:layout_width="match_parent" 安卓:layout_height="match_parent"
安卓:fitsSystemWindows="true"
安卓:layout_alignParentLeft="true"
安卓:layout_marginLeft="0dp"
安卓:layout_alignParentTop="true"
安卓:layout_marginTop="0dp"
安卓:id="@+id/homeInterface"
安卓:visibility="invisible">
<Button
style="?安卓:attr/buttonStyleSmall"
安卓:layout_width="wrap_content"
安卓:layout_height="wrap_content"
安卓:text="@string/say"
安卓:id="@+id/btnSay"
安卓:layout_alignParentRight="true"
安卓:layout_alignParentEnd="true"
安卓:onClick="evaluateInput"
安卓:layout_alignParentBottom="true" />
<TextView
安卓:layout_width="wrap_content"
安卓:layout_height="wrap_content"
安卓:textAppearance="?安卓:attr/textAppearanceSmall"
安卓:text="Ignis:"
安卓:id="@+id/lblIgnis"
安卓:layout_centerVertical="true"
安卓:layout_alignParentLeft="true"
安卓:layout_alignParentStart="true"
安卓:textColor="#FFB77C06" />
<TextView
安卓:layout_width="wrap_content"
安卓:layout_height="wrap_content"
安卓:textAppearance="?安卓:attr/textAppearanceLarge"
安卓:id="@+id/lblOutput"
安卓:layout_alignTop="@+id/lblIgnis"
安卓:layout_toRightOf="@+id/lblIgnis"
安卓:layout_alignRight="@+id/btnSay"
安卓:layout_alignEnd="@+id/btnSay"
安卓:textColor="#FFB77C06"
安卓:layout_above="@+id/btnSay"
安卓:editable="false"
安卓:text="Awaiting input."
安卓:textSize="16dp" />
<EditText
安卓:layout_width="wrap_content"
安卓:layout_height="wrap_content"
安卓:id="@+id/txtInput"
安卓:layout_alignParentLeft="true"
安卓:layout_alignParentStart="true"
安卓:layout_toLeftOf="@+id/btnSay"
安卓:layout_toStartOf="@+id/btnSay"
安卓:background="#ffffff"
安卓:layout_alignTop="@+id/btnSay"
安卓:layout_alignParentBottom="true"
安卓:inputType="text"
安卓:editable="true"
安卓:clickable="true" />
</RelativeLayout>
<RelativeLayout
安卓:layout_width="match_parent"
安卓:layout_height="match_parent"
安卓:id="@+id/emailInterface">
<Button
安卓:layout_width="wrap_content"
安卓:layout_height="wrap_content"
安卓:text="Send Email"
安卓:id="@+id/btnEmail"
安卓:onClick="SendEmail"
安卓:layout_alignParentBottom="true"
安卓:layout_alignParentRight="true"
安卓:layout_alignParentEnd="true" />
<TextView
安卓:layout_width="wrap_content"
安卓:layout_height="wrap_content"
安卓:textAppearance="?安卓:attr/textAppearanceSmall"
安卓:text=" Gmail Emailer"
安卓:id="@+id/textView"
安卓:layout_alignParentTop="true"
安卓:layout_alignParentLeft="true"
安卓:layout_alignParentStart="true"
安卓:textColor="#FFB77C06" />
<TextView
安卓:layout_width="wrap_content"
安卓:layout_height="wrap_content"
安卓:textAppearance="?安卓:attr/textAppearanceSmall"
安卓:text=" Your Username "
安卓:id="@+id/lblUser"
安卓:textColor="#FFB77C06"
安卓:layout_below="@+id/textView"
安卓:layout_alignParentLeft="true"
安卓:layout_alignParentStart="true"
安卓:layout_marginTop="30dp" />
<EditText
安卓:layout_width="wrap_content"
安卓:layout_height="wrap_content"
安卓:id="@+id/txtUser"
安卓:layout_alignTop="@+id/lblUser"
安卓:layout_toRightOf="@+id/lblUser"
安卓:layout_toLeftOf="@+id/btnEmail"
安卓:layout_toStartOf="@+id/btnEmail"
安卓:background="#ffffff"
安卓:inputType="text" />
<TextView
安卓:layout_width="wrap_content"
安卓:layout_height="wrap_content"
安卓:textAppearance="?安卓:attr/textAppearanceSmall"
安卓:text=" Your Password "
安卓:id="@+id/lblPass"
安卓:textColor="#FFB77C06"
安卓:layout_marginTop="36dp"
安卓:layout_below="@+id/txtUser"
安卓:layout_alignParentLeft="true"
安卓:layout_alignParentStart="true" />
<EditText
安卓:layout_width="wrap_content"
安卓:layout_height="wrap_content"
安卓:id="@+id/txtPass"
安卓:background="#ffffff"
安卓:layout_alignBottom="@+id/lblPass"
安卓:layout_alignLeft="@+id/txtUser"
安卓:layout_alignStart="@+id/txtUser"
安卓:layout_alignRight="@+id/txtUser"
安卓:layout_alignEnd="@+id/txtUser"
安卓:inputType="text" />
<TextView
安卓:layout_width="wrap_content"
安卓:layout_height="wrap_content"
安卓:textAppearance="?安卓:attr/textAppearanceSmall"
安卓:text=" Send to "
安卓:id="@+id/lblSendTo"
安卓:textColor="#FFB77C06"
安卓:layout_marginTop="25dp"
安卓:layout_below="@+id/lblPass"
安卓:layout_alignParentLeft="true"
安卓:layout_alignParentStart="true" />
<EditText
安卓:layout_width="wrap_content"
安卓:layout_height="wrap_content"
安卓:id="@+id/txtTo"
安卓:background="#ffffff"
安卓:layout_alignTop="@+id/lblSendTo"
安卓:layout_alignLeft="@+id/txtPass"
安卓:layout_alignStart="@+id/txtPass"
安卓:layout_alignRight="@+id/txtPass"
安卓:layout_alignEnd="@+id/txtPass"
安卓:inputType="text" />
<TextView
安卓:layout_width="wrap_content"
安卓:layout_height="wrap_content"
安卓:textAppearance="?安卓:attr/textAppearanceSmall"
安卓:text=" Subject "
安卓:id="@+id/lblSubject"
安卓:textColor="#FFB77C06"
安卓:layout_marginTop="26dp"
安卓:layout_below="@+id/txtTo"
安卓:layout_alignParentLeft="true"
安卓:layout_alignParentStart="true" />
<EditText
安卓:layout_width="wrap_content"
安卓:layout_height="wrap_content"
安卓:id="@+id/txtSubject"
安卓:background="#ffffff"
安卓:layout_alignBottom="@+id/lblSubject"
安卓:layout_toRightOf="@+id/lblPass"
安卓:layout_alignRight="@+id/txtTo"
安卓:layout_alignEnd="@+id/txtTo"
安卓:inputType="text" />
<TextView
安卓:layout_width="wrap_content"
安卓:layout_height="wrap_content"
安卓:textAppearance="?安卓:attr/textAppearanceSmall"
安卓:text=" Body "
安卓:id="@+id/lblBody"
安卓:textColor="#FFB77C06"
安卓:layout_centerVertical="true"
安卓:layout_alignParentLeft="true"
安卓:layout_alignParentStart="true" />
<EditText
安卓:layout_width="wrap_content"
安卓:layout_height="wrap_content"
安卓:inputType="text|textMultiLine"
安卓:ems="10"
安卓:id="@+id/txtBody"
安卓:layout_alignTop="@+id/lblBody"
安卓:layout_alignLeft="@+id/txtTo"
安卓:layout_alignStart="@+id/txtTo"
安卓:layout_above="@+id/btnEmail"
安卓:background="#ffffff"
安卓:layout_alignRight="@+id/btnEmail"
安卓:layout_alignEnd="@+id/btnEmail" />
</RelativeLayout>
</RelativeLayout>
清单Xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:安卓="http://schemas.安卓.com/apk/res/安卓"
package="comi.coding.prometheus.ignisai" >
<uses-permission 安卓:name="安卓.permission.INTERNET" />
<application
安卓:allowBackup="true"
安卓:icon="@mipmap/ic_launcher"
安卓:label="@string/app_name"
安卓:theme="@style/AppTheme" >
<activity
安卓:name=".Main"
安卓:label="@string/app_name" >
<intent-filter>
<action 安卓:name="安卓.intent.action.MAIN" />
<category 安卓:name="安卓.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity 安卓:name=".Browser"/>
<activity 安卓:name=".ConnectorActivity"/>
</application>
</manifest>
错误
11-14 02:54:01.475 5398-5398/? E/AndroidRuntime: Caused by:java.lang.NoClassDefFoundError: javax.activation.DataHandler
11-14 02:54:01.475 5398-5398/? E/AndroidRuntime: at javax.mail.internet.MimeMessage.setContent(MimeMessage.java:1515)
11-14 02:54:01.475 5398-5398/? E/AndroidRuntime: at javax.mail.internet.MimeBodyPart.setText(MimeBodyPart.java:1170)
11-14 02:54:01.475 5398-5398/? E/AndroidRuntime: at javax.mail.internet.MimeMessage.setText(MimeMessage.java:1554)
11-14 02:54:01.475 5398-5398/? E/AndroidRuntime: at javax.mail.internet.MimeMessage.setText(MimeMessage.java:1538)
它不起作用的原因：
代码中有99个小错误， 99只小虫子。 找到一个， 修补一下， 代码中有127个小错误
# 1 楼答案
导入正在消失，因为您在Android Studio中启用了动态优化导入。您可以在设置中禁用/启用该功能>；编辑>；通用>；自动导入。正在生成
NoClassDefFoundError异常，因为javax.activation.DataHandler在Android中不存在