使用Android Maps API V2的Android应用程序拒绝启动

Question

I have a problem with my app that uses the android api v2 in that it won't start it only keeps saying that "Unfortunately, app_name has stopped working.", I have followed every step in the guide released by google and I have also looked up similar problems here in StackOverflow and tried there solution but none seems to work unfortunately. So that's why I'm asking you guys for your help.

MainActivity.java

import android.support.v4.app.FragmentActivity;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.GoogleMap;
import android.os.Bundle;
import android.view.Menu;

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();

}

@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_main, menu);
    return true;
}

}

Manifest.xml

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

<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/>
<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"/>

<permission
     android:name="com.appname.name.permission.MAPS_RECEIVE"
     android:protectionLevel="signature"/>
   <uses-permission android:name="com.appname.name.permission.MAPS_RECEIVE"/>

<uses-sdk
    android:minSdkVersion="8"
    android:targetSdkVersion="17" />

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

    <activity
        android:name="com.appname.name.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>
    <meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="api_key"/>
</application>

</manifest>

activity_main.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=".MainActivity" >

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

LogCat(error code)

03-01 20:20:20.258: W/dalvikvm(1989): VFY: unable to resolve check-cast 465 (Lcom/google/android/maps/MapView;) in Lcom/cornboyzmaps/googlemapsA/MainActivity;
03-01 20:20:20.258: D/dalvikvm(1989): VFY: replacing opcode 0x1f at 0x0014
03-01 20:20:20.268: D/dalvikvm(1989): DexOpt: unable to opt direct call 0x0cdf at 0x34 in Lcom/cornboyzmaps/googlemapsA/MainActivity;.onCreate
03-01 20:20:20.458: D/AndroidRuntime(1989): Shutting down VM
03-01 20:20:20.458: W/dalvikvm(1989): threadid=1: thread exiting with uncaught exception (group=0x40a71930)
03-01 20:20:20.488: E/AndroidRuntime(1989): FATAL EXCEPTION: main
03-01 20:20:20.488: E/AndroidRuntime(1989): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.cornboyzmaps.googlemapsA/com.cornboyzmaps.googlemapsA.MainActivity}: android.view.InflateException: Binary XML file line #8: Error inflating class fragment
03-01 20:20:20.488: E/AndroidRuntime(1989):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180)
03-01 20:20:20.488: E/AndroidRuntime(1989):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
03-01 20:20:20.488: E/AndroidRuntime(1989):     at android.app.ActivityThread.access$600(ActivityThread.java:141)
03-01 20:20:20.488: E/AndroidRuntime(1989):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
03-01 20:20:20.488: E/AndroidRuntime(1989):     at android.os.Handler.dispatchMessage(Handler.java:99)
03-01 20:20:20.488: E/AndroidRuntime(1989):     at android.os.Looper.loop(Looper.java:137)
03-01 20:20:20.488: E/AndroidRuntime(1989):     at android.app.ActivityThread.main(ActivityThread.java:5041)
03-01 20:20:20.488: E/AndroidRuntime(1989):     at java.lang.reflect.Method.invokeNative(Native Method)
03-01 20:20:20.488: E/AndroidRuntime(1989):     at java.lang.reflect.Method.invoke(Method.java:511)
03-01 20:20:20.488: E/AndroidRuntime(1989):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
03-01 20:20:20.488: E/AndroidRuntime(1989):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
03-01 20:20:20.488: E/AndroidRuntime(1989):     at dalvik.system.NativeStart.main(Native Method)
03-01 20:20:20.488: E/AndroidRuntime(1989): Caused by: android.view.InflateException: Binary XML file line #8: Error inflating class fragment
03-01 20:20:20.488: E/AndroidRuntime(1989):     at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:704)
03-01 20:20:20.488: E/AndroidRuntime(1989):     at android.view.LayoutInflater.rInflate(LayoutInflater.java:746)
03-01 20:20:20.488: E/AndroidRuntime(1989):     at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
03-01 20:20:20.488: E/AndroidRuntime(1989):     at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
03-01 20:20:20.488: E/AndroidRuntime(1989):     at android.view.LayoutInflater.inflate(LayoutInflater.java:352)
03-01 20:20:20.488: E/AndroidRuntime(1989):     at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:270)
03-01 20:20:20.488: E/AndroidRuntime(1989):     at android.app.Activity.setContentView(Activity.java:1881)
03-01 20:20:20.488: E/AndroidRuntime(1989):     at com.cornboyzmaps.googlemapsA.MainActivity.onCreate(MainActivity.java:21)
03-01 20:20:20.488: E/AndroidRuntime(1989):     at android.app.Activity.performCreate(Activity.java:5104)
03-01 20:20:20.488: E/AndroidRuntime(1989):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
03-01 20:20:20.488: E/AndroidRuntime(1989):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
03-01 20:20:20.488: E/AndroidRuntime(1989):     ... 11 more
03-01 20:20:20.488: E/AndroidRuntime(1989): Caused by: android.app.Fragment$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
03-01 20:20:20.488: E/AndroidRuntime(1989):     at android.app.Fragment.instantiate(Fragment.java:592)
03-01 20:20:20.488: E/AndroidRuntime(1989):     at android.app.Fragment.instantiate(Fragment.java:560)
03-01 20:20:20.488: E/AndroidRuntime(1989):     at android.app.Activity.onCreateView(Activity.java:4709)
03-01 20:20:20.488: E/AndroidRuntime(1989):     at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:680)
03-01 20:20:20.488: E/AndroidRuntime(1989):     ... 21 more
03-01 20:20:20.488: E/AndroidRuntime(1989): Caused by: java.lang.ClassNotFoundException: Didn't find class "com.google.android.gms.maps.MapFragment" on path: /data/app/com.cornboyzmaps.googlemapsA-2.apk
03-01 20:20:20.488: E/AndroidRuntime(1989):     at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:65)
03-01 20:20:20.488: E/AndroidRuntime(1989):     at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
03-01 20:20:20.488: E/AndroidRuntime(1989):     at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
03-01 20:20:20.488: E/AndroidRuntime(1989):     at android.app.Fragment.instantiate(Fragment.java:582)
03-01 20:20:20.488: E/AndroidRuntime(1989):     ... 24 more
03-01 20:25:20.778: I/Process(1989): Sending signal. PID: 1989 SIG: 9

Answer 1

I've tried to run this application and it worked fine for me. Remember to link the project to your Google Play Service project as described here .

You can download it from https://github.com/apacha/maps_demo