我一次又一次地得到这个错误，即使我已经使用了＆＃34; multiDexEnabled true＆＃34;在我的gradle.Here是我的java文件，我收到错误：
package com.itjobnotification.first.app;
import android.content.Intent;
import android.graphics.Color;
import android.preference.PreferenceManager;
import android.provider.Settings;
import android.content.Context;
import android.database.DataSetObserver;
import android.support.design.widget.TextInputLayout;
import android.support.v7.app.ActionBar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.CardView;
import android.support.v7.widget.Toolbar;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.view.WindowManager;
import android.view.inputmethod.InputMethodManager;
import android.widget.ListAdapter;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.EditText;
import android.net.Uri;
import android.util.Log;
import com.gc.materialdesign.views.Button;
import com.gc.materialdesign.widgets.Dialog;
import com.google.gson.Gson;
import android.content.SharedPreferences;
import android.widget.CheckBox;
import java.util.ArrayList;
import java.util.Arrays;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.widget.Spinner;
import android.widget.SpinnerAdapter;
import android.widget.Toast;
import android.widget.ArrayAdapter;
import android.widget.TextView;
import android.text.method.LinkMovementMethod;
import android.text.Html;
public class signupActivity extends AppCompatActivity implements OnTaskCompleted {
AlertDialog dialog;
com.gc.materialdesign.views.ButtonFlat skills;
ArrayList<String> selectedItems;
Spinner ctc;
private Toolbar toolbar;
formBody fb;
int index = 0, i = 0;
String[] ar = new String[10];
String item;
Button submit;
EditText name, email, company, exp, promo, location;
CardView cv;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_signup);
toolbar = (Toolbar) findViewById(R.id.tool_bar); // Attaching the layout to the toolbar object
setSupportActionBar(toolbar);
getSupportActionBar().setTitle("Get Started!!");
skills = (com.gc.materialdesign.views.ButtonFlat) findViewById(R.id.chooseSkills);
TextView textView = (TextView) findViewById(R.id.terms);
submit = (Button) findViewById(R.id.submit);
Spinner spinner = (Spinner) findViewById(R.id.college);
Spinner spinner1 = (Spinner) findViewById(R.id.loc);
name = (EditText) findViewById(R.id.name);
email = (EditText) findViewById(R.id.email);
company = (EditText) findViewById(R.id.company);
exp = (EditText) findViewById(R.id.exp);
ctc = (Spinner) findViewById(R.id.ctc);
CardView cv = (CardView) findViewById(R.id.card_view);
final formBody fb = new formBody();
// first spinner - college
ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(this,
R.array.college, android.R.layout.simple_spinner_item);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner.setAdapter(
new NothingSelectedSpinnerAdapter(
adapter,
R.layout.contact_spinner_row_nothing_selected,
this));
//second spinner with job location
ArrayAdapter<CharSequence> adapter1 = ArrayAdapter.createFromResource(this,
R.array.location, android.R.layout.simple_spinner_item);
adapter1.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner1.setAdapter(
new NothingSelectedSpinnerAdapter(
adapter1,
R.layout.contact_spinner_row_nothing_selected_loc,
this));
ArrayAdapter<CharSequence> adapter2 = ArrayAdapter.createFromResource(this,
R.array.category, android.R.layout.simple_spinner_item);
adapter2.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
ctc.setAdapter(
new NothingSelectedSpinnerAdapter(
adapter2,
R.layout.contact_spinner_row_nothing_selected_ctc,
this));
;
// skill button, dialog opens with the options when clicked
skills.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
final CharSequence[] items = new String[]{"Java", "C/C++", "Analytics", "Android", "Distributed Systems", "UI", "Python", "Ruby"};
selectedItems = new ArrayList<String>();
selectedItems.add("Java");
selectedItems.add("C/C++");
selectedItems.add("Analytics");
selectedItems.add("Android");
selectedItems.add("Distributed Systems");
selectedItems.add("UI");
selectedItems.add("Python");
selectedItems.add("Ruby");
AlertDialog.Builder dbuilder = new AlertDialog.Builder(signupActivity.this)
.setTitle("Select your skills")
.setMultiChoiceItems(items, null,
new DialogInterface.OnMultiChoiceClickListener() {
// indexSelected contains the index of item (of which checkbox checked)
@Override
public void onClick(DialogInterface dialog, int indexSelected,
boolean isChecked) {
if (isChecked) {
item = selectedItems.get(indexSelected);
Log.d("hello123", item);
ar[index++] = item;
} else if (selectedItems.contains(indexSelected)) {
selectedItems.remove(Integer.valueOf(indexSelected));
}
}
})
.setPositiveButton("OK", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int id) {
}
})
.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int id) {
dialog.cancel();
}
});
dialog = dbuilder.create();//AlertDialog dialog; create like this outside onClick
dialog.show();
}
});
submit.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Uri.Builder builder = new Uri.Builder();
builder.scheme("http");
builder.authority(QuickstartPreferences.SERVER_IP);
builder.path(QuickstartPreferences.SIGNUP_PAGE);
fb.name = name.getText().toString();
// fb.ctc = ctc.getText().toString();
fb.exp = exp.getText().toString();
fb.email = email.getText().toString();
fb.company = company.getText().toString();
// fb.location = location.getText().toString();
if (checkEmpty(fb.name, "Name can't be empty")) {
return;
}
if (checkEmpty(fb.email, "Email can't be empty")) {
return;
}
if (checkEmpty(fb.company, "Company can't be empty")) {
return;
}
if (checkEmpty(fb.exp, "Experience can't be empty")) {
return;
}
if (fb.ctc.isEmpty()) {
fb.ctc = "0";
}
Spinner spinner1 = (Spinner) findViewById(R.id.loc);
String str = null;
try {
str = spinner1.getSelectedItem().toString();
} catch (Exception e) {
Toast.makeText(getApplicationContext(), "Please select job location",
Toast.LENGTH_LONG).show();
return;
}
fb.location = str;
Spinner spinner = (Spinner) findViewById(R.id.college);
String cg = null;
try {
cg = spinner.getSelectedItem().toString();
} catch (Exception e) {
Toast.makeText(getApplicationContext(), "Please select college",
Toast.LENGTH_LONG).show();
return;
}
fb.college = cg;
if (index > 0) {
fb.skill_set = Arrays.copyOfRange(ar, 0, index);
} else {
Toast.makeText(getApplicationContext(), "Skills can't be empty",
Toast.LENGTH_LONG).show();
return;
}
String android_id = Settings.Secure.getString(getContentResolver(),
Settings.Secure.ANDROID_ID);
fb.device_id = android_id;
Gson gson = new Gson();
String postdata = gson.toJson(fb);
String myUrl = builder.build().toString();
new Dbtask(signupActivity.this, postdata).execute(myUrl);
}
});
// terms and conditions textView
textView.setClickable(true);
textView.setMovementMethod(LinkMovementMethod.getInstance());
String text = "I agree to <a href='http://itjobnotification.com/terms.html'> terms and conditions. </a>";
textView.setText(Html.fromHtml(text));
textView.setTextSize(10);
Dialog dialog = new Dialog(this, "Prompt!!", "Just add few details of you and get started");
dialog.show();
}
public boolean checkEmpty(String str, String message) {
if (str.isEmpty()) {
Toast.makeText(getApplicationContext(), message,
Toast.LENGTH_LONG).show();
return true;
}
return false;
}
@Override
public void onTaskCompleted(String str) {
//Log.e("nimish", "signup completed");
SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
sharedPreferences.edit().putBoolean(QuickstartPreferences.SIGNUP, true).apply();
Intent intent = new Intent(this, RegistrationIntentService.class);
startService(intent);
new AlertDialog.Builder(this)
.setTitle("Thanks for Signing up !!!")
.setMessage("We will notify you when we find suitable jobs for you")
.setPositiveButton(android.R.string.yes, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
Log.d("hello", String.valueOf(QuickstartPreferences.SIGNUP));
finish();
}
})
.setIcon(android.R.drawable.btn_star)
.show();
/* Dialog dialog = new Dialog(this,"Thanks for Signing up !!!", "We will notify you when we find suitable jobs for you");
dialog.setCancelable(false);
dialog.setCanceledOnTouchOutside(false);
dialog.setOnAcceptButtonClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
finish();
}
});
dialog.show(); */
}
@Override
public void onResume() { // After a pause OR at startup
super.onResume();
//Log.e("nimish", "refresh");
}
public class NothingSelectedSpinnerAdapter implements SpinnerAdapter, ListAdapter {
protected static final int EXTRA = 1;
protected SpinnerAdapter adapter;
protected Context context;
protected int nothingSelectedLayout;
protected int nothingSelectedDropdownLayout;
protected LayoutInflater layoutInflater;
public NothingSelectedSpinnerAdapter(
SpinnerAdapter spinnerAdapter,
int nothingSelectedLayout, Context context) {
this(spinnerAdapter, nothingSelectedLayout, -1, context);
}
public NothingSelectedSpinnerAdapter(SpinnerAdapter spinnerAdapter, int nothingSelectedLayout, int nothingSelectedDropdownLayout, Context context) {
this.adapter = spinnerAdapter;
this.context = context;
this.nothingSelectedLayout = nothingSelectedLayout;
this.nothingSelectedDropdownLayout = nothingSelectedDropdownLayout;
layoutInflater = LayoutInflater.from(context);
}
@Override
public final View getView(int position, View convertView, ViewGroup parent) {
// This provides the View for the Selected Item in the Spinner, not
// the dropdown (unless dropdownView is not set).
if (position == 0) {
return getNothingSelectedView(parent);
}
return adapter.getView(position - EXTRA, null, parent); // Could re-use
// the convertView if possible.
}
protected View getNothingSelectedView(ViewGroup parent) {
return layoutInflater.inflate(nothingSelectedLayout, parent, false);
}
@Override
public View getDropDownView(int position, View convertView, ViewGroup parent) {
// Android BUG! http://code.google.com/p/android/issues/detail?id=17128 -
// Spinner does not support multiple view types
if (position == 0) {
return nothingSelectedDropdownLayout == -1 ?
new View(context) :
getNothingSelectedDropdownView(parent);
}
// Could re-use the convertView if possible, use setTag...
return adapter.getDropDownView(position - EXTRA, null, parent);
}
protected View getNothingSelectedDropdownView(ViewGroup parent) {
return layoutInflater.inflate(nothingSelectedDropdownLayout, parent, false);
}
@Override
public int getCount() {
int count = adapter.getCount();
return count == 0 ? 0 : count + EXTRA;
}
@Override
public Object getItem(int position) {
return position == 0 ? null : adapter.getItem(position - EXTRA);
}
@Override
public int getItemViewType(int position) {
return 0;
}
@Override
public int getViewTypeCount() {
return 1;
}
@Override
public long getItemId(int position) {
return position >= EXTRA ? adapter.getItemId(position - EXTRA) : position - EXTRA;
}
@Override
public boolean hasStableIds() {
return adapter.hasStableIds();
}
@Override
public boolean isEmpty() {
return adapter.isEmpty();
}
@Override
public void registerDataSetObserver(DataSetObserver observer) {
adapter.registerDataSetObserver(observer);
}
@Override
public void unregisterDataSetObserver(DataSetObserver observer) {
adapter.unregisterDataSetObserver(observer);
}
@Override
public boolean areAllItemsEnabled() {
return false;
}
@Override
public boolean isEnabled(int position) {
return position != 0; // Don't allow the 'nothing selected'
// item to be picked.
}
}
}
这是在AlertDialog.Builder中显示错误的logcat：
FATAL EXCEPTION: main
Process: com.itjobnotification.first.app, PID: 3403
java.lang.NoClassDefFoundError: com.itjobnotification.first.app.signupActivity$1$3
at com.itjobnotification.first.app.signupActivity$1.onClick(signupActivity.java:142)
at com.gc.materialdesign.views.ButtonFlat.onDraw(ButtonFlat.java:83)
`
AndroidManifest.xml：
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.itjobnotification.first.app" >
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" />
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name" >
<activity
android:name=".SplashActivity"
android:theme="@android:style/Theme.Black.NoTitleBar" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<meta-data
android:name="com.google.android.gms.version"
android:theme="@style/AppTheme"
android:value="@integer/google_play_services_version" />
<activity
android:name=".signupActivity"
android:configChanges="orientation|keyboardHidden"
android:label="Get Started!!"
android:theme="@style/AppTheme"
android:windowSoftInputMode="adjustResize|stateHidden" >
</activity>
<receiver
android:name="com.google.android.gms.gcm.GcmReceiver"
android:exported="true"
android:permission="com.google.android.c2dm.permission.SEND"
android:theme="@style/AppTheme" >
<intent-filter>
<action android:name="com.google.android.c2dm.intent.RECEIVE" />
</intent-filter>
</receiver>
<service
android:name=".RegistrationIntentService"
android:exported="false"
android:theme="@style/AppTheme" >
</service>
<service
android:name=".MyGcmListenerService"
android:exported="false"
android:theme="@style/AppTheme" >
<intent-filter>
<action android:name="com.google.android.c2dm.intent.RECEIVE" />
</intent-filter>
</service>
<activity
android:name=".jobshow"
android:label="@string/title_activity_jobshow"
android:theme="@style/DarkAction" >
</activity>
<activity
android:name=".list"
android:label="@string/title_activity_list"
android:theme="@style/AppTheme" >
</activity>
<activity
android:name=".Test1Activity"
android:label="@string/title_activity_test1"
android:theme="@style/AppTheme" >
</activity>
<activity
android:name=".chatActivity"
android:label="@string/title_activity_chat"
android:theme="@style/AppTheme" >
</activity>
<activity
android:name=".quiz"
android:label="@string/title_activity_quiz"
android:theme="@style/AppTheme" >
</activity>
<meta-data
android:name="com.facebook.sdk.ApplicationId"
android:value="@string/facebook_app_id" />
<activity
android:name="com.facebook.FacebookActivity"
android:configChanges="keyboard|keyboardHidden|screenLayout|screenSize|orientation"
android:label="@string/app_name"
android:theme="@android:style/Theme.Translucent.NoTitleBar" />
<!-- Used for Google Play Store Campaign Measurement -->
<service android:name="com.google.android.gms.analytics.CampaignTrackingService" />
<receiver
android:name="com.google.android.gms.analytics.CampaignTrackingReceiver"
android:exported="true" >
<intent-filter>
<action android:name="com.android.vending.INSTALL_REFERRER" />
</intent-filter>
</receiver>
</application>
</manifest>
答案 0 :(得分：1)
在清单代码中添加以下行：
<application
android:name="android.support.multidex.MultiDexApplication">
</application>
您还必须将以下内容添加到gradle文件依赖项中：
编译'com.android.support:multidex:1.0.0'
最后您还需要在OnCreate方法中将以下内容添加到您的java文件中：
MultiDex.install（本）;
更多参考资料查看此链接： https://developer.android.com/tools/building/multidex.html
答案 1 :(得分：0)
如果项目中的方法超过65k，则Multidex会创建多个dex文件。如果库需要它，那么您需要使用它。如果你在build.gradle中定义它，你应该没问题。无需以编程方式添加它。
在build.gradle文件中
1.增加
dependencies {
compile 'com.android.support:multidex:1.0.0'
}
2。然后添加
android {
defaultConfig {
multiDexEnabled true
}
}
3。然后添加
<activity>
com.itjobnotification.first.app.signupactivity
</activity>
使用包括包名在内的全名清单。并使类名称以SignUpActivity开头。