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POUnfortunately, my app has stopped working
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copied!<p>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 <code>activity_main.xml</code> contains <code>android:id="@+id/map"</code>: </p> <pre><code><?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"/> </code></pre> <p>My MainActivity.java class is equally simple:</p> <pre><code>public class MainActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); } } </code></pre> <p>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.</p> <p>Here are the LogCat Errors:</p> <pre><code>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 </code></pre> <p><strong>Updated</strong> And here is the manifest</p> <pre><code><?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" >  <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"/>  <uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/>  <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>  <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/> <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>  <uses-feature android:glEsVersion="0x00020000" android:required="true"/>  <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" >  <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> </code></pre> <p><strong>UDPATED</strong> New LogCat since changing android:minSdkVersion="12" "Use MapFragment only if you are targeting API 12 and above. Otherwise, use SupportMapFragment."</p> <pre><code>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 </code></pre>

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