Inflating SupportMapFragment with Google Maps v2 causes ClassNotFoundException

Question

I want to start an Intent with a Google Maps fragment. The sample code of Google Play Services works fine but I don't get these maps running in my application. My referenced libraries are:

android-support-v4.jar
google-play-services_lib.jar
google-play-services.jar
The Android jar is the target 4.2 also platform android-17

I get this errors:

java.lang.RuntimeException: Unable to start activity \
       ComponentInfo{app.cookingplace/app.cookingplace.MapsActivity}: \
       android.view.InflateException: Binary XML file line #8: \
       Error inflating class fragment
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1651)
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1667)
    at android.app.ActivityThread.access$1500(ActivityThread.java:117)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:935)
    at android.os.Handler.dispatchMessage(Handler.java:99)
    at android.os.Looper.loop(Looper.java:130)
    at android.app.ActivityThread.main(ActivityThread.java:3687)
    at java.lang.reflect.Method.invokeNative(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:507)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:625)
    at dalvik.system.NativeStart.main(Native Method)

Caused by: android.view.InflateException: Binary XML file line #8: \
       Error inflating class fragment
    at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:587)
    at android.view.LayoutInflater.rInflate(LayoutInflater.java:623)
    at android.view.LayoutInflater.inflate(LayoutInflater.java:408)
    at android.view.LayoutInflater.inflate(LayoutInflater.java:320)
    at android.view.LayoutInflater.inflate(LayoutInflater.java:276)
    at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:209)
    at android.app.Activity.setContentView(Activity.java:1657)
    at app.cookingplace.MapsActivity.onCreate(MapsActivity.java:12)
    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1615)
    ... 11 more

Caused by: android.support.v4.app.Fragment$InstantiationException: \
       Unable to instantiate fragment com.google.android.gms.maps.SupportMapFragment: \
       make sure class name exists, is public, and has an empty constructor that is public
    at android.support.v4.app.Fragment.instantiate(Fragment.java:401)
    at android.support.v4.app.Fragment.instantiate(Fragment.java:369)
    at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:272)
    at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:563)
    ... 20 more

Caused by: java.lang.ClassNotFoundException: com.google.android.gms.maps.SupportMapFragment in loader \
       dalvik.system.PathClassLoader[/system/framework/com.google.android.maps.jar:\
       /data/app/app.cookingplace-2.apk]
    at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:240)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:551)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
    at android.support.v4.app.Fragment.instantiate(Fragment.java:391)
    ... 23 more

My Code:

LoginActivity.java

package app.cookingplace;

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;

public class LoginActivity extends Activity implements OnClickListener {

    // All static variables
    static final String baseURL = "http://sfsuswe.com/~f12g22/web/php/Login.php?";
    String URL = "";
    // XML node keys
    static final String KEY_SESSION = "session"; // parent node
    static final String KEY_ACTIVATED = "activate";
    String activated = "";
    static final String KEY_REGISTERED = "registered";
    String registered = "";
    static final String KEY_USERID = "userId";
    String userId = "";
    static final String KEY_LOGONNAME = "logonName";
    String logonName = "";

    private Button login_button;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_login);

        login_button = (Button) findViewById(R.id.login_button);
        login_button.setOnClickListener(this);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.activity_login, menu);
        return true;
    }

    @Override
    public void onClick(View arg0) {
        EditText nameLogin = (EditText) findViewById(R.id.user_logon_id);
        String loginName = nameLogin.getText().toString();
        EditText passwordLogin = (EditText) findViewById(R.id.password_logon_id);
        String password = passwordLogin.getText().toString();

        String parameters = "logon=" + loginName + "&password=" + password;
        URL = baseURL + parameters;

        XMLParser parser = new XMLParser();
        String xml = parser.getXmlFromUrl(URL); // getting XML
        Document doc = parser.getDomElement(xml); // getting DOM element

        NodeList nl = doc.getElementsByTagName(KEY_SESSION);

        Element e = (Element) nl.item(0);
        // adding each child node to HashMap key => value
        activated = parser.getValue(e, KEY_ACTIVATED);
        registered = parser.getValue(e, KEY_REGISTERED);
        userId = parser.getValue(e, KEY_USERID);
        logonName = parser.getValue(e, KEY_LOGONNAME);

        if (registered.equals("1")) {
        Intent nextScreen = new Intent(LoginActivity.this,
                MapsActivity.class);
        startActivityForResult(nextScreen, 0);
        }
    }
}

MapsActitity.java

     package app.cookingplace;

     import android.os.Bundle;
     import android.support.v4.app.FragmentActivity;
     import android.view.Menu;

     public class MapsActivity extends FragmentActivity {

            @Override
            protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_maps);
            }

            @Override
            public boolean onCreateOptionsMenu(Menu menu) {
                // Inflate the menu; this adds items to the action bar if it is present.
                getMenuInflater().inflate(R.menu.activity_maps, menu);
                return true;
            }
        }

activity_login.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".LoginActivity" >

<EditText
    android:id="@+id/user_logon_id"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentLeft="true"
    android:layout_alignParentTop="true"
    android:ems="10"
    android:inputType="textPersonName"
    android:text="@string/user_login" >

    <requestFocus />
</EditText>

<EditText
    android:id="@+id/password_logon_id"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentLeft="true"
    android:layout_below="@+id/user_logon_id"
    android:ems="10"
    android:inputType="textPassword"
    android:text="@string/password_login" />

<Button
    android:id="@+id/login_button"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentLeft="true"
    android:layout_below="@+id/password_logon_id"
    android:text="@string/button_login" />

activity_maps.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MapsActivity" >

    <fragment
        class="com.google.android.gms.maps.SupportMapFragment"
        android:id="@+id/map"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
/>

</RelativeLayout>

AndroidManifest.xml

    <?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="app.cookingplace"
    android:versionCode="1"
    android:versionName="1.0" >

    <permission
        android:name="app.cookingplace.permission.MAPS_RECEIVE"
        android:protectionLevel="signature" />

    <uses-permission android:name="app.cookingplace.permission.MAPS_RECEIVE" />
    <!-- Copied from Google Maps Library/AndroidManifest.xml. -->
    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="16" />

    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
    <!-- External storage for caching. -->
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <!-- My Location -->
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
    <!-- Maps API needs OpenGL ES 2.0. -->
    <uses-feature
        android:glEsVersion="0x00020000"
        android:required="true" />
    <!-- End of copy. -->

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name" >
        <meta-data
            android:name="com.google.android.maps.v2.API_KEY"
            android:value="-My key tested and works fine-" />

        <activity
            android:name="app.cookingplace.LoginActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity
            android:name="app.cookingplace.MapActivity"
            android:label="@string/title_activity_map" >
        </activity>
        <activity
            android:name="app.cookingplace.TestActivity"
            android:label="@string/title_activity_test" >
        </activity>
        <activity
            android:name="app.cookingplace.MapsActivity"
            android:label="@string/title_activity_maps" >
            </activity>
        <uses-library android:name="com.google.android.maps" />
    </application>

</manifest>

you have classnotfound Error have you added up all the classes in manifest file? — Usman Kurd, Dec 24 '12 at 08:16
i think i have done it bu i have sean the classnotfound Error. ich have included the same jars like in the sample project and it works. that is my problem. i cant find the missing components. — King Luy, Dec 24 '12 at 08:45

Rahul · Accepted Answer · 2012-12-24T09:10:08.113

4

In MapsActitity.java Add this import ( import android.support.v4.app.FragmentActivity; )

Change

 public class MapsActivity extends Activity

To

public class MapsActivity extends FragmentActivity

Read this http://developer.android.com/training/basics/fragments/creating.html

edited Dec 24 '12 at 09:10

answered Dec 24 '12 at 09:04

Rahul

10,457
4
35
55

When i use public class MapsActivity extends FragmentActivity i get this error: 12-24 11:04:52.046: E/dalvikvm(3649): Could not find class 'app.cookingplace.MapsActivity', referenced from method app.cookingplace.LoginActivity.onClick – King Luy Dec 24 '12 at 10:05
Add in your manifest, between and – Rahul Dec 24 '12 at 10:21
done but i get errors again 12-24 11:37:24.296: E/AndroidRuntime(5762): java.lang.RuntimeException: Unable to start activity ComponentInfo{app.cookingplace/app.cookingplace.MapsActivity}: android.view.InflateException: Binary XML file line #7: Error inflating class fragment – King Luy Dec 24 '12 at 10:38
my current activity_maps.xml looks like – King Luy Dec 24 '12 at 10:52
King Luy Try this also. You shouldn't be transitioning the views, but actually starting a new activity. Intent nextScreen = new Intent(LoginActivity.this,MapsActivity.class); startActivityForResult(nextScreen, 0); – Rahul Dec 24 '12 at 10:54
stil fail 12-24 11:59:15.109: E/AndroidRuntime(6962): java.lang.RuntimeException: Unable to start activity ComponentInfo{app.cookingplace/app.cookingplace.MapsActivity}: android.view.InflateException: Binary XML file line #7: Error inflating class fragment 12-24 11:59:15.109: E/AndroidRuntime(6962): Caused by: android.view.InflateException: Binary XML file line #7: Error inflating class fragment – King Luy Dec 24 '12 at 11:02
12-24 11:59:15.109: E/AndroidRuntime(6962): Caused by: java.lang.ClassNotFoundException: com.google.android.gms.maps.SupportMapFragment in loader dalvik.system.PathClassLoader[/system/framework/com.google.android.maps.jar:/data/app/app.cookingplace-2.apk] – King Luy Dec 24 '12 at 11:02
Read the answer of this http://stackoverflow.com/questions/13696620/google-maps-android-api-v2-authorization-failure. – Rahul Dec 24 '12 at 11:09
Update your manifest file in your question. Did you put the in your manifest, between and – Rahul Dec 24 '12 at 11:19

score 2 · Answer 2 · answered Dec 24 '12 at 08:58

2

Just change this thing in your MapsActitity.java file public class MapsActivity extends android.support.v4.app.FragmentActivity . You need to extends the FragmentActivity not simple activity .

This is the issue where your application is trying to get the FragmentActivity which is not you have extended.

answered Dec 24 '12 at 08:58

GrIsHu

29,068
10
64
102

When i use public class MapsActivity extends android.support.v4.app.FragmentActivity i get this error:12-24 11:02:57.039: E/dalvikvm(3553): Could not find class 'app.cookingplace.MapsActivity', referenced from method app.cookingplace.LoginActivity.onClick – King Luy Dec 24 '12 at 10:04
Just define only class name in manifest file like this `` and try out. Now i hope it should work. – GrIsHu Dec 24 '12 at 11:30

score 1 · Answer 3 · edited Jun 19 '13 at 23:22

1

Now it works fine. I followed that tutorial my lib project was marked with a red X that was the point. Follow this tutorial to fix it.
The solution is a combination of all your hints. Thanks a lot. Guys you have saved my Xmas.

edited Jun 19 '13 at 23:22

JJD

50,076
60
203
339

answered Dec 25 '12 at 06:52

King Luy

141
3
15

Syed Raza Mehdi · Answer 4 · 2014-03-12T11:56:12.940

This is a working example do have a look it worked for me Here's a link!

Your xml include class="com.google.android.gms.maps.SupportMapFragment" inside the fragment tag

extend your activity from FragmentActivity

and if you want to make a map object use this

SupportMapFragment mapFrag = (SupportMapFragment) getSupportFragmentManager()
                .findFragmentById(R.id.map);

Code is here as follows: XML

<fragment
    android:id="@+id/map"
    android:name="com.google.android.gms.maps.MapFragment"
    android:layout_width="match_parent"
    android:layout_height="match_parent" 
    class="com.google.android.gms.maps.SupportMapFragment"/>

MainActivity

 public class MainActivity extends FragmentActivity  {


     // Google Map
private GoogleMap googleMap;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);


 .......

     SupportMapFragment mapFrag = (SupportMapFragment) getSupportFragmentManager()
                .findFragmentById(R.id.map);
    ....

score 0 · Answer 5 · answered Dec 24 '12 at 08:19

0

On witch Android version are you trying? If the version is Pre-Honeycomb, (<3.0) then you can't use fragments, like indicates in docs

You should use SupportMapFragment like indicates here, and ensure that the libs are included on path project.

Hope it helps.

answered Dec 24 '12 at 08:19

sabadow

5,095
3
34
51

in activity_maps.xml is the class definition class="com.google.android.gms.maps.SupportMapFragment" is that not that what you mean? – King Luy Dec 24 '12 at 08:50
that and that your Activity `MapsActivity` should extends from `android.support.v4.app.FragmentActivity` to use `SupportFragments` before Android 3.0 (and maybe some other fixes like this) – sabadow Dec 24 '12 at 09:19
with that i get this errors: 12-24 11:05:59.828: E/dalvikvm(3820): Could not find class 'app.cookingplace.MapsActivity', referenced from method app.cookingplace.LoginActivity.onClick – King Luy Dec 24 '12 at 10:06
Have your project a `libs` folder where you add the needed jars? which version of SDK tool are using? chek this http://stackoverflow.com/questions/9931040/fragmentactivity-causing-classnotfoundexception and http://stackoverflow.com/questions/5502907/could-not-find-class-exception-android – sabadow Dec 24 '12 at 10:16
My workspace looks like that http://s7.directupload.net/file/d/3114/7pwm253c_png.htm I have downloaded yesterday the SDK tool. So i thinke it is up to date. The Sample of the google play services works fine in that device. i copyed the cood snippeds from there. – King Luy Dec 24 '12 at 10:34
the SDK Manager Version is 21.0.1 – King Luy Dec 24 '12 at 10:42

score 0 · Answer 6 · answered Jan 14 '13 at 18:38

0

Are you sure the target AVD, where you are trying to run your project is version 11+ , because fragments are not allowed below 11.

answered Jan 14 '13 at 18:38

Rahul

67
2
8

Inflating SupportMapFragment with Google Maps v2 causes ClassNotFoundException

6 Answers6