Unfortunately, my app has stopped working

Question

Can anyone clarify where my error is? The Android app crashes with the error, "Unfortunately, my app has stopped working". The crash only happens when my activity_main.xml contains android:id="@+id/map":

<?xml version="1.0" encoding="utf-8"?>
<fragment xmlns:android="http://schemas.android.com/apk/res/android"
  android:id="@+id/map"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  class="com.google.android.gms.maps.MapFragment"/>

My MainActivity.java class is equally simple:

public class MainActivity extends Activity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }
}

I have added the "google-play" dependencies and I am targeting "Google APIs". Again, the app runs fine when I do not attempt to display the map.

Here are the LogCat Errors:

01-11 02:04:24.608: E/AndroidRuntime(14416): FATAL EXCEPTION: main
01-11 02:04:24.608: E/AndroidRuntime(14416): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.example.myfirstapp/com.example.myfirstapp.MainActivity}: java.lang.ClassNotFoundException: com.example.myfirstapp.MainActivity
01-11 02:04:24.608: E/AndroidRuntime(14416):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2267)
01-11 02:04:24.608: E/AndroidRuntime(14416):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387)
01-11 02:04:24.608: E/AndroidRuntime(14416):    at android.app.ActivityThread.access$600(ActivityThread.java:151)
01-11 02:04:24.608: E/AndroidRuntime(14416):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1331)
01-11 02:04:24.608: E/AndroidRuntime(14416):    at android.os.Handler.dispatchMessage(Handler.java:99)
01-11 02:04:24.608: E/AndroidRuntime(14416):    at android.os.Looper.loop(Looper.java:155)
01-11 02:04:24.608: E/AndroidRuntime(14416):    at android.app.ActivityThread.main(ActivityThread.java:5485)
01-11 02:04:24.608: E/AndroidRuntime(14416):    at java.lang.reflect.Method.invokeNative(Native Method)
01-11 02:04:24.608: E/AndroidRuntime(14416):    at java.lang.reflect.Method.invoke(Method.java:511)
01-11 02:04:24.608: E/AndroidRuntime(14416):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1028)
01-11 02:04:24.608: E/AndroidRuntime(14416):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:795)
01-11 02:04:24.608: E/AndroidRuntime(14416):    at dalvik.system.NativeStart.main(Native Method)
01-11 02:04:24.608: E/AndroidRuntime(14416): Caused by: java.lang.ClassNotFoundException: com.example.myfirstapp.MainActivity
01-11 02:04:24.608: E/AndroidRuntime(14416):    at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:61)
01-11 02:04:24.608: E/AndroidRuntime(14416):    at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
01-11 02:04:24.608: E/AndroidRuntime(14416):    at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
01-11 02:04:24.608: E/AndroidRuntime(14416):    at android.app.Instrumentation.newActivity(Instrumentation.java:1069)
01-11 02:04:24.608: E/AndroidRuntime(14416):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2258)
01-11 02:04:24.608: E/AndroidRuntime(14416):    ... 11 more

Updated And here is the manifest

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

    <!-- MAPS -->
    <permission android:name="com.example.myfirstapp.permission.MAPS_RECEIVE" android:protectionLevel="signature"/>
    <uses-permission android:name="com.example.myfirstapp.permission.MAPS_RECEIVE"/>

    <uses-permission android:name="android.permission.INTERNET"/>

    <!-- Allows the API to access Google web-based services -->
    <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"/>
    <!-- 8/17 oneX=16-->
    <uses-sdk
        android:minSdkVersion="12" 
        android:targetSdkVersion="17" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >

        <!-- REMOVED user-library android:name="com.google.android.maps" / -->

        <meta-data
            android:name="com.google.android.maps.v2.API_KEY"
            android:value="xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"/>

        <activity
            android:name="com.example.myfirstapp.MainActivity"
            android:label="@string/app_name" >

            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

UDPATED New LogCat since changing android:minSdkVersion="12" "Use MapFragment only if you are targeting API 12 and above. Otherwise, use SupportMapFragment."

01-11 11:26:23.267: E/AndroidRuntime(27646): FATAL EXCEPTION: main
01-11 11:26:23.267: E/AndroidRuntime(27646): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.myfirstapp/com.example.myfirstapp.MainActivity}: android.view.InflateException: Binary XML file line #7: Error inflating class fragment
01-11 11:26:23.267: E/AndroidRuntime(27646):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2351)
01-11 11:26:23.267: E/AndroidRuntime(27646):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387)
01-11 11:26:23.267: E/AndroidRuntime(27646):    at android.app.ActivityThread.access$600(ActivityThread.java:151)
01-11 11:26:23.267: E/AndroidRuntime(27646):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1331)
01-11 11:26:23.267: E/AndroidRuntime(27646):    at android.os.Handler.dispatchMessage(Handler.java:99)
01-11 11:26:23.267: E/AndroidRuntime(27646):    at android.os.Looper.loop(Looper.java:155)
01-11 11:26:23.267: E/AndroidRuntime(27646):    at android.app.ActivityThread.main(ActivityThread.java:5485)
01-11 11:26:23.267: E/AndroidRuntime(27646):    at java.lang.reflect.Method.invokeNative(Native Method)
01-11 11:26:23.267: E/AndroidRuntime(27646):    at java.lang.reflect.Method.invoke(Method.java:511)
01-11 11:26:23.267: E/AndroidRuntime(27646):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1028)
01-11 11:26:23.267: E/AndroidRuntime(27646):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:795)
01-11 11:26:23.267: E/AndroidRuntime(27646):    at dalvik.system.NativeStart.main(Native Method)
01-11 11:26:23.267: E/AndroidRuntime(27646): Caused by: android.view.InflateException: Binary XML file line #7: Error inflating class fragment
01-11 11:26:23.267: E/AndroidRuntime(27646):    at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:704)
01-11 11:26:23.267: E/AndroidRuntime(27646):    at android.view.LayoutInflater.rInflate(LayoutInflater.java:746)
01-11 11:26:23.267: E/AndroidRuntime(27646):    at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
01-11 11:26:23.267: E/AndroidRuntime(27646):    at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
01-11 11:26:23.267: E/AndroidRuntime(27646):    at android.view.LayoutInflater.inflate(LayoutInflater.java:352)
01-11 11:26:23.267: E/AndroidRuntime(27646):    at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:358)
01-11 11:26:23.267: E/AndroidRuntime(27646):    at android.app.Activity.setContentView(Activity.java:1912)
01-11 11:26:23.267: E/AndroidRuntime(27646):    at com.example.myfirstapp.MainActivity.onCreate(MainActivity.java:12)
01-11 11:26:23.267: E/AndroidRuntime(27646):    at android.app.Activity.performCreate(Activity.java:5066)
01-11 11:26:23.267: E/AndroidRuntime(27646):    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1101)
01-11 11:26:23.267: E/AndroidRuntime(27646):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2307)
01-11 11:26:23.267: E/AndroidRuntime(27646):    ... 11 more
01-11 11:26:23.267: E/AndroidRuntime(27646): Caused by: android.app.Fragment$InstantiationException: Unable to instantiate fragment com.google.android.gms.maps.MapFragment: make sure class name exists, is public, and has an empty constructor that is public
01-11 11:26:23.267: E/AndroidRuntime(27646):    at android.app.Fragment.instantiate(Fragment.java:624)
01-11 11:26:23.267: E/AndroidRuntime(27646):    at android.app.Fragment.instantiate(Fragment.java:584)
01-11 11:26:23.267: E/AndroidRuntime(27646):    at android.app.Activity.onCreateView(Activity.java:4714)
01-11 11:26:23.267: E/AndroidRuntime(27646):    at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:680)
01-11 11:26:23.267: E/AndroidRuntime(27646):    ... 21 more
01-11 11:26:23.267: E/AndroidRuntime(27646): Caused by: java.lang.ClassNotFoundException: com.google.android.gms.maps.MapFragment
01-11 11:26:23.267: E/AndroidRuntime(27646):    at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:61)
01-11 11:26:23.267: E/AndroidRuntime(27646):    at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
01-11 11:26:23.267: E/AndroidRuntime(27646):    at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
01-11 11:26:23.267: E/AndroidRuntime(27646):    at android.app.Fragment.instantiate(Fragment.java:606)
01-11 11:26:23.267: E/AndroidRuntime(27646):    ... 24 more

Check whether MainActivity is declared in AndroidManifest file? — SKK, Jan 11 '13 at 07:12
I have updated the original question with the manifest. Thank you! — please delete me, Jan 11 '13 at 14:44
Also, I should note that I am testing on an Android running 4.1.1 — please delete me, Jan 11 '13 at 15:00
possible duplicate of [Unfortunately MyApp has stopped. How can I solve this?](http://stackoverflow.com/questions/23353173/unfortunately-myapp-has-stopped-how-can-i-solve-this) — Code-Apprentice, Jul 25 '14 at 18:54

score 2 · Answer 1 · edited Jan 11 '13 at 08:11

2

Caused by: java.lang.ClassNotFoundException: com.example.myfirstapp.MainActivity

Define your activity in AndroidManifest like this

<activity
      android:name="com.example.myfirstapp.MainActivity"
      android:label="@string/app_name">
</activity>

edited Jan 11 '13 at 08:11

Blackbelt

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answered Jan 11 '13 at 07:15

Juned

6,290
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I have updated the original question with the manifest and it appears that I do have the advised activity attributes. Thank you! – please delete me Jan 11 '13 at 14:44

GrIsHu · Answer 2 · 2013-01-11T15:36:28.607

1

As you have defined the android:minSdkVersion="11" and the MapFragment is only supported on the api 12 or above.

So you have to use SupportMapFragment instead of MapFragment as below:

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

Don't forget to extend your Activity with FragmentActivity.

    public class MainActivity extends FragmentActivity{

           SupportMapFragment mMap;
           GoogleMap googleMap;

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

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

               googleMap = mMap.getMap();
     }
   }

edited Jan 11 '13 at 15:36

answered Jan 11 '13 at 07:13

GrIsHu

29,068
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Thanks for that. I changed android:minSdkVersion="12" after reading, "Use MapFragment only if you are targeting API 12 and above. Otherwise, use SupportMapFragment." ...sadly it is still crashing. – please delete me Jan 11 '13 at 16:10
Can you post your latest logcat. What error you are getting now ? – GrIsHu Jan 11 '13 at 16:16
Thanks! I just updated the original question with the new LogCats – please delete me Jan 11 '13 at 16:35
It is working now! Once I added the Play library again (removed while debugging). I believe the issue was as you described ...and of course adding the google play services dependencies to the project. – please delete me Jan 11 '13 at 17:11

moDev · Accepted Answer · 2013-01-11T07:30:41.973

1

It is required to use SupportMapFragment if API version is below 11

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

Don't forget to extend your Activity with FragmentActivity

public class MainActivity extends FragmentActivity{

SupportMapFragment mMap;
GoogleMap googleMap;

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

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

        googleMap = mMap.getMap();
 }
}

edited Jan 11 '13 at 07:30

answered Jan 11 '13 at 07:25

moDev

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I updated the manifest and MainActivity.java and it is still crashing. – please delete me Jan 11 '13 at 14:56
Also, I have android:minSdkVersion="11" – please delete me Jan 11 '13 at 15:02
I changed android:minSdkVersion="12" after reading, "Use MapFragment only if you are targeting API 12 and above. Otherwise, use SupportMapFragment." – please delete me Jan 11 '13 at 16:06
Thanks! I think this was the fix! – please delete me Jan 11 '13 at 17:12

score 0 · Answer 4 · edited Jan 11 '13 at 08:10

0

Change AndroidManifest.xml

<activity
      android:name="com.example.myfirstapp.MainActivity"
      android:label="@string/app_name">
</activity>

And give the permission for map and Internet.

edited Jan 11 '13 at 08:10

Blackbelt

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answered Jan 11 '13 at 07:49

URAndroid

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Yes, both of these are true. – please delete me Jan 11 '13 at 15:05

score 0 · Answer 5 · answered Oct 16 '13 at 04:40

0

I have been having the same issue during some days, and cloning this repo helped me a lot,

https://github.com/googlemaps/hellomap-android

Good luck

answered Oct 16 '13 at 04:40

user9869932

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Unfortunately, my app has stopped working

5 Answers5