手机上的Android Maps V2应用程序崩溃

Question

I've used my app on my phone(Samsung Galaxy S3, 4.1.2) as people adviced me to when it comes to android map v2 apps but I still get the same error where it says that my app has unfortuntely stopped.

MainActivity.java

package com.example.name;

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

public class MainActivity extends FragmentActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        SupportMapFragment fragment = new SupportMapFragment();
        getSupportFragmentManager().beginTransaction()
                .add(android.R.id.content, fragment).commit();
    }
}

Manifest.xml

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

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="16" />

    <permission
        android:name="com.example.name.permission.MAPS_RECEIVE"
        android:protectionLevel="signature" />

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

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" 
        android:debuggable="true" >
        <activity
            android:name="com.example.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>

    <uses-feature
        android:glEsVersion="0x00020000"
        android:required="true" />

</manifest>

activity_main.xml

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

Logcat

03-04 00:26:51.274: E/dalvikvm(14369): Could not find class 'com.google.android.maps.MapView', referenced from method com.cornboyzmaps.googlemapsA.MainActivity.onCreate

03-04 00:26:51.279: W/dalvikvm(14369): VFY: unable to resolve check-cast 465 (Lcom/google/android/maps/MapView;) in Lcom/cornboyzmaps/googlemapsA/MainActivity;

03-04 00:26:51.279: D/dalvikvm(14369): VFY: replacing opcode 0x1f at 0x0014

03-04 00:26:51.279: D/dalvikvm(14369): DexOpt: unable to opt direct call 0x0cdf at 0x34 in Lcom/cornboyzmaps/googlemapsA/MainActivity;.onCreate

03-04 00:26:51.344: D/AndroidRuntime(14369): Shutting down VM

03-04 00:26:51.344: W/dalvikvm(14369): threadid=1: thread exiting with uncaught exception (group=0x413832a0)

03-04 00:26:51.354: E/AndroidRuntime(14369): FATAL EXCEPTION: main

03-04 00:26:51.354: E/AndroidRuntime(14369): 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

03-04 00:26:51.354: E/AndroidRuntime(14369):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2100)

03-04 00:26:51.354: E/AndroidRuntime(14369):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2125)

03-04 00:26:51.354: E/AndroidRuntime(14369):    at android.app.ActivityThread.access$600(ActivityThread.java:140)

03-04 00:26:51.354: E/AndroidRuntime(14369):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1227)

03-04 00:26:51.354: E/AndroidRuntime(14369):    at android.os.Handler.dispatchMessage(Handler.java:99)

03-04 00:26:51.354: E/AndroidRuntime(14369):    at android.os.Looper.loop(Looper.java:137)

03-04 00:26:51.354: E/AndroidRuntime(14369):    at android.app.ActivityThread.main(ActivityThread.java:4898)

03-04 00:26:51.354: E/AndroidRuntime(14369):    at java.lang.reflect.Method.invokeNative(Native Method)

03-04 00:26:51.354: E/AndroidRuntime(14369):    at java.lang.reflect.Method.invoke(Method.java:511)

03-04 00:26:51.354: E/AndroidRuntime(14369):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1006)

03-04 00:26:51.354: E/AndroidRuntime(14369):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:773)

03-04 00:26:51.354: E/AndroidRuntime(14369):    at dalvik.system.NativeStart.main(Native Method)

03-04 00:26:51.354: E/AndroidRuntime(14369): Caused by: android.view.InflateException: Binary XML file line #8: Error inflating class fragment

03-04 00:26:51.354: E/AndroidRuntime(14369):    at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:704)

03-04 00:26:51.354: E/AndroidRuntime(14369):    at android.view.LayoutInflater.rInflate(LayoutInflater.java:746)

03-04 00:26:51.354: E/AndroidRuntime(14369):    at android.view.LayoutInflater.inflate(LayoutInflater.java:489)

03-04 00:26:51.354: E/AndroidRuntime(14369):    at android.view.LayoutInflater.inflate(LayoutInflater.java:396)

03-04 00:26:51.354: E/AndroidRuntime(14369):    at android.view.LayoutInflater.inflate(LayoutInflater.java:352)

03-04 00:26:51.354: E/AndroidRuntime(14369):    at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:308)

03-04 00:26:51.354: E/AndroidRuntime(14369):    at android.app.Activity.setContentView(Activity.java:1924)

03-04 00:26:51.354: E/AndroidRuntime(14369):    at com.cornboyzmaps.googlemapsA.MainActivity.onCreate(MainActivity.java:21)

03-04 00:26:51.354: E/AndroidRuntime(14369):    at android.app.Activity.performCreate(Activity.java:5206)

03-04 00:26:51.354: E/AndroidRuntime(14369):    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1083)

03-04 00:26:51.354: E/AndroidRuntime(14369):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2064)

03-04 00:26:51.354: E/AndroidRuntime(14369):    ... 11 more

03-04 00:26:51.354: E/AndroidRuntime(14369): Caused by: android.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

03-04 00:26:51.354: E/AndroidRuntime(14369):    at android.app.Fragment.instantiate(Fragment.java:584)

03-04 00:26:51.354: E/AndroidRuntime(14369):    at android.app.Fragment.instantiate(Fragment.java:552)

03-04 00:26:51.354: E/AndroidRuntime(14369):    at android.app.Activity.onCreateView(Activity.java:4849)

03-04 00:26:51.354: E/AndroidRuntime(14369):    at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:680)

03-04 00:26:51.354: E/AndroidRuntime(14369):    ... 21 more

03-04 00:26:51.354: E/AndroidRuntime(14369): Caused by: java.lang.ClassNotFoundException: com.google.android.gms.maps.SupportMapFragment

03-04 00:26:51.354: E/AndroidRuntime(14369):    at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:61)

03-04 00:26:51.354: E/AndroidRuntime(14369):    at java.lang.ClassLoader.loadClass(ClassLoader.java:501)

03-04 00:26:51.354: E/AndroidRuntime(14369):    at java.lang.ClassLoader.loadClass(ClassLoader.java:461)

03-04 00:26:51.354: E/AndroidRuntime(14369):    at android.app.Fragment.instantiate(Fragment.java:574)

03-04 00:26:51.354: E/AndroidRuntime(14369):    ... 24 more

Answer 1

Somehow, you are missing the code for the Maps V2 library in your project. You need to correctly attach to the Android library project representing the Play Services SDK. See the Play Services documentation , specifically the part beginning with "To set up a project to use the Google Play services SDK".

Answer 2

I got this error when i imported the Google_Play_Services_lib to eclipse without checking the option of Copy Project to Workspace .See the picture

Also check my blogPost i have tried to explain the problems

Answer 3

If you're on the SDK tools v17 that came out after Google I/O, check if any of these help here:

http://xrigau.wordpress.com/2012/03/22/fix-some-problems-with-libraries-in-the-adt-17-plugin-10/

http://android.foxykeep.com/dev/how-to-fix-the-classdefnotfounderror-with-adt-17