Question

在我更新sdk管理器中的某些项目之前，一切正常。现在，每当我尝试运行具有谷歌地图的应用程序时，我的应用程序崩溃了。

清单：

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

    <uses-sdk
        android:minSdkVersion="14"
        android:targetSdkVersion="18" />

    <permission
        android:name="test.prototype.MAPS_RECEIVE"
        android:protectionLevel="signature" />

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

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

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

        <activity android:name="test.prototype.MapDetail" />

        <meta-data
            android:name="com.google.android.gms.version"
            android:value="@integer/google_play_services_version" />

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

         <uses-library android:name="com.google.android.maps" />

    </application>

</manifest>

MainActivity ：

public class MainActivity extends FragmentActivity implements LocationListener {

    GoogleMap googleMap;

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

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

            googleMap = fm.getMap();

            googleMap.setMyLocationEnabled(true);

            googleMap.setMapType(GoogleMap.MAP_TYPE_HYBRID);  

            LocationManager locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);

            locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, this);                                                                                                             
    }

    @Override
    public void onLocationChanged(Location location) {

        double latitude = location.getLatitude();

        double longitude = location.getLongitude();

        LatLng latLng = new LatLng(latitude, longitude);

        googleMap.moveCamera(CameraUpdateFactory.newLatLng(latLng));

        googleMap.animateCamera(CameraUpdateFactory.zoomTo(20));

        TextView coordinates = (TextView) findViewById(R.id.coordinates);
        coordinates.setText("Latitude: " +  latitude  + "\n" + "Longitude: "+ longitude );        
    }   

    @Override
    public void onProviderDisabled(String arg0) {

    }

    @Override
    public void onProviderEnabled(String arg0) {

    }

    @Override
    public void onStatusChanged(String arg0, int arg1, Bundle arg2) {

    }

}

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"
    android:orientation="vertical"
    tools:context=".MainActivity" >

    <TextView
        android:id="@+id/coordinates"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

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

</RelativeLayout>

enter image description here

好的，所以我添加了

<meta-data
            android:name="com.google.android.gms.version"
            android:value="@integer/google_play_services_version" />

清单中的

。清单更新。

但仍有错误：

02-25 05:18:31.026: E/AndroidRuntime(6265): FATAL EXCEPTION: main
02-25 05:18:31.026: E/AndroidRuntime(6265): java.lang.RuntimeException: Unable to start activity ComponentInfo{test.prototype/test.prototype.MainActivity}: java.lang.NullPointerException
02-25 05:18:31.026: E/AndroidRuntime(6265):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2343)
02-25 05:18:31.026: E/AndroidRuntime(6265):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2395)
02-25 05:18:31.026: E/AndroidRuntime(6265):     at android.app.ActivityThread.access$600(ActivityThread.java:162)
02-25 05:18:31.026: E/AndroidRuntime(6265):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1364)
02-25 05:18:31.026: E/AndroidRuntime(6265):     at android.os.Handler.dispatchMessage(Handler.java:107)
02-25 05:18:31.026: E/AndroidRuntime(6265):     at android.os.Looper.loop(Looper.java:194)
02-25 05:18:31.026: E/AndroidRuntime(6265):     at android.app.ActivityThread.main(ActivityThread.java:5371)
02-25 05:18:31.026: E/AndroidRuntime(6265):     at java.lang.reflect.Method.invokeNative(Native Method)
02-25 05:18:31.026: E/AndroidRuntime(6265):     at java.lang.reflect.Method.invoke(Method.java:525)
02-25 05:18:31.026: E/AndroidRuntime(6265):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:833)
02-25 05:18:31.026: E/AndroidRuntime(6265):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600)
02-25 05:18:31.026: E/AndroidRuntime(6265):     at dalvik.system.NativeStart.main(Native Method)
02-25 05:18:31.026: E/AndroidRuntime(6265): Caused by: java.lang.NullPointerException
02-25 05:18:31.026: E/AndroidRuntime(6265):     at test.prototype.MainActivity.onCreate(MainActivity.java:28)
02-25 05:18:31.026: E/AndroidRuntime(6265):     at android.app.Activity.performCreate(Activity.java:5122)
02-25 05:18:31.026: E/AndroidRuntime(6265):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1081)
02-25 05:18:31.026: E/AndroidRuntime(6265):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2307)
02-25 05:18:31.026: E/AndroidRuntime(6265):     ... 11 more

在其他设备上运行后，

LogCat 已更新：

02-25 05:38:40.462: E/AndroidRuntime(4342): FATAL EXCEPTION: main
02-25 05:38:40.462: E/AndroidRuntime(4342): java.lang.RuntimeException: Unable to start activity ComponentInfo{test.prototype/test.prototype.MainActivity}: android.view.InflateException: Binary XML file line #14: Error inflating class fragment
02-25 05:38:40.462: E/AndroidRuntime(4342):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2372)
02-25 05:38:40.462: E/AndroidRuntime(4342):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2424)
02-25 05:38:40.462: E/AndroidRuntime(4342):     at android.app.ActivityThread.access$600(ActivityThread.java:162)
02-25 05:38:40.462: E/AndroidRuntime(4342):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1364)
02-25 05:38:40.462: E/AndroidRuntime(4342):     at android.os.Handler.dispatchMessage(Handler.java:107)
02-25 05:38:40.462: E/AndroidRuntime(4342):     at android.os.Looper.loop(Looper.java:194)
02-25 05:38:40.462: E/AndroidRuntime(4342):     at android.app.ActivityThread.main(ActivityThread.java:5400)
02-25 05:38:40.462: E/AndroidRuntime(4342):     at java.lang.reflect.Method.invokeNative(Native Method)
02-25 05:38:40.462: E/AndroidRuntime(4342):     at java.lang.reflect.Method.invoke(Method.java:525)
02-25 05:38:40.462: E/AndroidRuntime(4342):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:837)
02-25 05:38:40.462: E/AndroidRuntime(4342):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:604)
02-25 05:38:40.462: E/AndroidRuntime(4342):     at dalvik.system.NativeStart.main(Native Method)
02-25 05:38:40.462: E/AndroidRuntime(4342): Caused by: android.view.InflateException: Binary XML file line #14: Error inflating class fragment
02-25 05:38:40.462: E/AndroidRuntime(4342):     at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:704)
02-25 05:38:40.462: E/AndroidRuntime(4342):     at android.view.LayoutInflater.rInflate(LayoutInflater.java:746)
02-25 05:38:40.462: E/AndroidRuntime(4342):     at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
02-25 05:38:40.462: E/AndroidRuntime(4342):     at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
02-25 05:38:40.462: E/AndroidRuntime(4342):     at android.view.LayoutInflater.inflate(LayoutInflater.java:352)
02-25 05:38:40.462: E/AndroidRuntime(4342):     at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:297)
02-25 05:38:40.462: E/AndroidRuntime(4342):     at android.app.Activity.setContentView(Activity.java:1881)
02-25 05:38:40.462: E/AndroidRuntime(4342):     at test.prototype.MainActivity.onCreate(MainActivity.java:22)
02-25 05:38:40.462: E/AndroidRuntime(4342):     at android.app.Activity.performCreate(Activity.java:5122)
02-25 05:38:40.462: E/AndroidRuntime(4342):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1081)
02-25 05:38:40.462: E/AndroidRuntime(4342):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2336)
02-25 05:38:40.462: E/AndroidRuntime(4342):     ... 11 more
02-25 05:38:40.462: E/AndroidRuntime(4342): Caused by: java.lang.SecurityException: The Maps API requires the additional following permissions to be set in the AndroidManifest.xml to ensure a correct behavior:
02-25 05:38:40.462: E/AndroidRuntime(4342): <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
02-25 05:38:40.462: E/AndroidRuntime(4342): <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
02-25 05:38:40.462: E/AndroidRuntime(4342):     at maps.e.ch.a(Unknown Source)
02-25 05:38:40.462: E/AndroidRuntime(4342):     at maps.e.ay.a(Unknown Source)
02-25 05:38:40.462: E/AndroidRuntime(4342):     at maps.e.ay.a(Unknown Source)
02-25 05:38:40.462: E/AndroidRuntime(4342):     at maps.e.al.a(Unknown Source)
02-25 05:38:40.462: E/AndroidRuntime(4342):     at maps.e.bg.a(Unknown Source)
02-25 05:38:40.462: E/AndroidRuntime(4342):     at maps.e.bf.a(Unknown Source)
02-25 05:38:40.462: E/AndroidRuntime(4342):     at eio.onTransact(SourceFile:107)
02-25 05:38:40.462: E/AndroidRuntime(4342):     at android.os.Binder.transact(Binder.java:310)
02-25 05:38:40.462: E/AndroidRuntime(4342):     at com.google.android.gms.maps.internal.IMapFragmentDelegate$a$a.onCreateView(Unknown Source)
02-25 05:38:40.462: E/AndroidRuntime(4342):     at com.google.android.gms.maps.SupportMapFragment$a.onCreateView(Unknown Source)
02-25 05:38:40.462: E/AndroidRuntime(4342):     at com.google.android.gms.dynamic.a$4.b(Unknown Source)
02-25 05:38:40.462: E/AndroidRuntime(4342):     at com.google.android.gms.dynamic.a.a(Unknown Source)
02-25 05:38:40.462: E/AndroidRuntime(4342):     at com.google.android.gms.dynamic.a.onCreateView(Unknown Source)
02-25 05:38:40.462: E/AndroidRuntime(4342):     at com.google.android.gms.maps.SupportMapFragment.onCreateView(Unknown Source)
02-25 05:38:40.462: E/AndroidRuntime(4342):     at android.support.v4.app.Fragment.performCreateView(Fragment.java:1500)
02-25 05:38:40.462: E/AndroidRuntime(4342):     at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:900)
02-25 05:38:40.462: E/AndroidRuntime(4342):     at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1082)
02-25 05:38:40.462: E/AndroidRuntime(4342):     at android.support.v4.app.FragmentManagerImpl.addFragment(FragmentManager.java:1184)
02-25 05:38:40.462: E/AndroidRuntime(4342):     at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:291)
02-25 05:38:40.462: E/AndroidRuntime(4342):     at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:676)
02-25 05:38:40.462: E/AndroidRuntime(4342):     ... 21 more

Answer 1

每SupportMapFragment.getMap()，它返回

null如果片段的视图尚未准备好。如果片段生命周期尚未通过onCreateView（LayoutInflater，ViewGroup，Bundle），则会发生这种情况。如果Google Play服务不可用，也会发生这种情况。如果Google Play服务随后可用且片段已经通过onCreateView（LayoutInflater，ViewGroup，Bundle），则再次调用此方法将初始化并返回GoogleMap。

考虑configuring your initial state via XML attributes并将getMap().setMyLocationEnabled(true)移至onLocationChanged以确保您的地图已经布局和配置，而不是在onCreate

中执行

更新到api 19后，Google Maps V2崩溃了

1 个答案: