Android Studio:错误的扩展类片段
我在写一个包含谷歌地图片段的android应用程序。当我从它所包含的活动中排除地图片段时,该应用运行良好。当我包含地图片段时,我会在下面的blockquote中引用异常。最令人讨厌的是,就在几个星期前,这并没有发生。这个活动几周来运行得非常好,然后我更新了android studio,现在我得到了这个异常。我搜索谷歌和*上的几个线程的解决方案,没有任何工作。我甚至尝试彻底复制和粘贴Google地图活动的Android演示,并且我得到相同的异常。请帮忙。Android Studio:错误的扩展类片段
升高(从机器人监视器复制)异常:
致命异常:主 工艺:com.androidapps.seanmcalinden.firstandroidapp,PID:23089 了java.lang.RuntimeException:无法启动活动ComponentInfo {com.androidapps.seanmcalinden.firstandroidapp/com.androidapps.seanmcalinden.firstandroidapp.MapsActivity}:android.view.InflateException:二进制XML文件行#55:二进制XML文件行#55:在android.app中导致错误的类片段 。 ActivityThread.performLaunchActivity(ActivityThread.java:2416) 在android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476) 在android.app.ActivityThread.-wrap11(ActivityThread.java) 在android.app.ActivityThread $ H.handleMessage(ActivityThread.java:1344) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:148) at android.app.ActivityThread.main(ActivityThread.java:5417) at java .lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:726) at com.an droid.internal.os.ZygoteInit.main(ZygoteInit.java:616) 引起:android.view.InflateException:二进制XML文件行#55:二进制XML文件行#55:在android.view中错误扩充类片段 时出错。 LayoutInflater.inflate(LayoutInflater.java:539) at android.view.LayoutInflater.inflate(LayoutInflater.java:423) at android.view.LayoutInflater.inflate(LayoutInflater.java:374) at com.android.internal。 policy.PhoneWindow.setContentView(PhoneWindow.java:393) at com.androidapps.seanmcalinden.firstandroidapp.MapsActivity.onCreate(MapsActivity.java:67 ) 在android.app.Activity.performCreate(Activity.java:6237) 在android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107) 在android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476) at android.app.ActivityThread.-wrap11(ActivityThread.java) at android.app.ActivityThread $ H.handleMessage(ActivityThread.java:1344) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:148) at android.app.ActivityThread.main(ActivityThread.java:5417) at java.lang.reflect.Method。调用(Native Method) at com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:726) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) :android.view.InflateException:二进制XML文件行#55:在android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:782) at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:704)上错误扩展类片段 在android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:798) (android.view.LayoutInflater.rInflate(LayoutInflater.java:835) ( )在android.view.LayoutInflater.inflate(LayoutInflater.java:515) 在android.view.LayoutInflater.inflate(LayoutInflater.java:423) 在android.view.LayoutInflater.inflate(LayoutInflater.java:374) 在玉米.android.internal.policy.PhoneWindow.setContentView(PhoneWindow.java:393) at android.app.Activity.setContentView(Activity.java:2166) at com.androidapps.seanmcalinden.firstandroidapp.MapsActivity.onCreate(MapsActivity.java :67) at android.app.Activity.performCreate(Activity.java:6237) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476) at android.app.ActivityThread.-wrap11(ActivityThread.java) at android .app.ActivityThread $ H.handleMessage(ActivityThread.java:1344) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:148) at android .app.ActivityThread.main(ActivityThread.java:5417) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:726) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 引起:java.lang.NullPointerException :试图在null对象引用 上的com.google.maps.api.android.lib6.gmm6.m.ad.a(未知源) at处调用虚拟方法'boolean java.io.File.mkdir()' com.google.maps.api.android.lib6.gmm6.cha(Unknown Source) at com.google.maps.api.android.lib6.gmm6.cya(Unknown Source) at com.google.maps.api。 android.lib6.e.bd.a(未知来源) at com.google.maps.api.android.lib6.e.ev.a(Unknown Sou rce) at com.google.maps.api.android.lib6.eza(Unknown Source) at com.google.maps.api.android.lib6.eya(Unknown Source) at com.google.android.gms。 maps.internal.u.onTransact(SourceFile:107) at android.os.Binder.transact(Binder.java:387) at com.google.android.gms.maps.internal.IMapFragmentDelegate $ zza $ zza.onCreateView(未知来源) at com.google.android.gms.maps.MapFragment $ zza.onCreateView(未知来源) at com.google.android.gms.dynamic.zza $ 4.zzb(未知来源) at com.google。 android.gms.dynamic.zza。zza(Unknown Source) at com.google.android.gms.dynamic.zza.onCreateView(Unknown Source) at com.google.android.gms.maps.MapFragment.onCreateView(Unknown Source) at android.app.Fragment .performCreateView(Fragment.java:2220) 在android.app.FragmentManagerImpl.moveToState(FragmentManager.java:949) 在android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1126) 在android.app.FragmentManagerImpl.addFragment (FragmentManager.java:1228) at android.app.FragmentManagerImpl.onCreateView(FragmentManager.java:2201) at android.app.FragmentCont roller.onCreateView(FragmentController.java:98) at android.app.Activity.onCreateView(Activity.java:5546) at android.support.v4.app.BaseFragmentActivityHoneycomb.onCreateView(BaseFragmentActivityHoneycomb.java:34) at android。 support.v4.app.FragmentActivity.onCreat
的onCreate方法:
protected void onCreate(Bundle savedInstanceState) {
Log.e("success", "entered onCreate in MapsActivity");
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_maps);
// Obtain the SupportMapFragment and get notified when the map is ready to be used.
MapFragment mapFragment =
(MapFragment) getFragmentManager().findFragmentById(R.id.map);
mapFragment.getMapAsync(this);
if (locationGAC == null) {
// ATTENTION: This "addApi(AppIndex.API)"was auto-generated to implement the App Indexing API.
// See https://g.co/AppIndexing/AndroidStudio for more information.
locationGAC = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.addApi(AppIndex.API).build();
Log.e("success", "created locationGAC");
}
Log.d("myTag", "test output 1");
createFriendList();
}
这项活动的布局文件:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:background="@color/colorPrimary"
android:weightSum="1" >
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal" >
<Button
android:layout_width="70dp"
android:layout_height="60dp"
android:text="Back"
android:id="@+id/button"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:layout_alignBottom="@+id/SearchBar1"
android:onClick="backToLogin"
android:background="@color/colorPrimaryDark"
android:textColor="#ffffff" />
<EditText
android:layout_width="0dp"
android:layout_height="60dp"
android:id="@+id/SearchBar1"
android:layout_alignParentTop="true"
android:hint="Search"
android:layout_alignParentEnd="false"
android:layout_alignParentStart="false"
android:layout_toEndOf="@id/button"
android:layout_toStartOf="@+id/SearchButton"
android:textColor="#ffffff"
android:textColorHint="#ffffff" />
<Button
style="?android:attr/buttonStyleSmall"
android:layout_width="70dp"
android:layout_height="60dp"
android:text="Go"
android:id="@+id/SearchButton"
android:layout_alignParentRight="true"
android:enabled="true"
android:onClick="onSearch"
android:textColor="#ffffff"
android:background="@color/colorPrimaryDark" />
</RelativeLayout>
<fragment xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MapsActivity"
class="com.google.android.gms.maps.MapFragment" />
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="60dp"
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_alignParentBottom="true"
android:orientation="horizontal">
<Button
android:layout_width="70dp"
android:layout_height="60dp"
android:text="Retrieve"
android:id="@+id/serverRetrieveButton"
android:layout_gravity="left"
android:textColor="#ffffff"
android:onClick="getLocationFromDexelus"
android:background="@color/colorPrimaryDark" />
<Button
android:layout_width="70dp"
android:layout_height="60dp"
android:text="Send"
android:id="@+id/serverSendButton"
android:layout_alignParentRight="true"
android:textColor="#ffffff"
android:onClick="sendLocationToDexelus"
android:background="@color/colorPrimaryDark" />
</RelativeLayout>
</RelativeLayout>
如上所述,我已经尝试了很多在*上找到的解决方案。不是说你不应该再次发布这些内容,而是我认为我的问题可能比那些更复杂或更具体的问题,因为没有给出的解决方案为我工作。
谢谢。
由于某些原因,当我将我的sdk更新为周三发布的版本时,我的问题消失了。我想这是适当的,因为这些问题在android studio更新后首次出现。感谢您的建议!
我认为错误来自线路class="com.google.android.gms.maps.MapFragment"
也许路径不正确。
提供您已经选中的帖子,以便其他人不会尝试复制它。你提到这是在更新AS之后发生的,你的google-play-services的当前版本是什么?是否有可能发布你的Gradle? –
检查此SO问题中的代码[17469661](http://*.com/questions/17469661/google-mapfragment-not-working-in-android)和[15703245](http://*.com/questions/15703245/google-maps-fragment-doesnt-load)如果它可以帮助你。 尝试使用SupportMapFragment而不是仅使用MapFragment。 – KENdi