我正在浏览Hello, MapView的文档,将MapView添加到我的Activity中。
当我启动我的Activity时,我在MapView上出现了通胀错误。
这是我的布局xml中的MapView:
<com.google.android.maps.MapView
android:id="@+id/mymap"
android:layout_width="fill_parent"
android:layout_height="200dip"
android:clickable="true"
android:apiKey="withheld"
/>
以下是我的MapActivity中的代码(该类名为ActivityDetails并扩展了MapActivity)类:
MapView mMap;
mMap = (MapView) findViewById(R.id.mymap);
mMap.setBuiltInZoomControls(true);
这是错误:
06-10 09:15:24.277: ERROR/AndroidRuntime(228): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.my.app/com.my.app.activity.ActivityDetails}: android.view.InflateException: Binary XML file line #35: Error inflating class com.google.android.maps.MapView
06-10 09:15:24.277: ERROR/AndroidRuntime(228): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2496)
06-10 09:15:24.277: ERROR/AndroidRuntime(228): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2512)
06-10 09:15:24.277: ERROR/AndroidRuntime(228): at android.app.ActivityThread.access$2200(ActivityThread.java:119)
06-10 09:15:24.277: ERROR/AndroidRuntime(228): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1863)
06-10 09:15:24.277: ERROR/AndroidRuntime(228): at android.os.Handler.dispatchMessage(Handler.java:99)
06-10 09:15:24.277: ERROR/AndroidRuntime(228): at android.os.Looper.loop(Looper.java:123)
06-10 09:15:24.277: ERROR/AndroidRuntime(228): at android.app.ActivityThread.main(ActivityThread.java:4363)
06-10 09:15:24.277: ERROR/AndroidRuntime(228): at java.lang.reflect.Method.invokeNative(Native Method)
06-10 09:15:24.277: ERROR/AndroidRuntime(228): at java.lang.reflect.Method.invoke(Method.java:521)
06-10 09:15:24.277: ERROR/AndroidRuntime(228): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
06-10 09:15:24.277: ERROR/AndroidRuntime(228): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
06-10 09:15:24.277: ERROR/AndroidRuntime(228): at dalvik.system.NativeStart.main(Native Method)
06-10 09:15:24.277: ERROR/AndroidRuntime(228): Caused by: android.view.InflateException: Binary XML file line #35: Error inflating class com.google.android.maps.MapView
06-10 09:15:24.277: ERROR/AndroidRuntime(228): at android.view.LayoutInflater.createView(LayoutInflater.java:513)
06-10 09:15:24.277: ERROR/AndroidRuntime(228): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:565)
06-10 09:15:24.277: ERROR/AndroidRuntime(228): at android.view.LayoutInflater.rInflate(LayoutInflater.java:618)
06-10 09:15:24.277: ERROR/AndroidRuntime(228): at android.view.LayoutInflater.rInflate(LayoutInflater.java:621)
06-10 09:15:24.277: ERROR/AndroidRuntime(228): at android.view.LayoutInflater.rInflate(LayoutInflater.java:621)
06-10 09:15:24.277: ERROR/AndroidRuntime(228): at android.view.LayoutInflater.inflate(LayoutInflater.java:407)
06-10 09:15:24.277: ERROR/AndroidRuntime(228): at android.view.LayoutInflater.inflate(LayoutInflater.java:320)
06-10 09:15:24.277: ERROR/AndroidRuntime(228): at android.view.LayoutInflater.inflate(LayoutInflater.java:276)
06-10 09:15:24.277: ERROR/AndroidRuntime(228): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:198)
06-10 09:15:24.277: ERROR/AndroidRuntime(228): at android.app.Activity.setContentView(Activity.java:1622)
06-10 09:15:24.277: ERROR/AndroidRuntime(228): at com.my.app.activity.ActivityDetails.onCreate(ActivityDetails.java:128)
06-10 09:15:24.277: ERROR/AndroidRuntime(228): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
06-10 09:15:24.277: ERROR/AndroidRuntime(228): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2459)
06-10 09:15:24.277: ERROR/AndroidRuntime(228): ... 11 more
06-10 09:15:24.277: ERROR/AndroidRuntime(228): Caused by: java.lang.reflect.InvocationTargetException
06-10 09:15:24.277: ERROR/AndroidRuntime(228): at com.google.android.maps.MapView.<init>(MapView.java:237)
06-10 09:15:24.277: ERROR/AndroidRuntime(228): at java.lang.reflect.Constructor.constructNative(Native Method)
06-10 09:15:24.277: ERROR/AndroidRuntime(228): at java.lang.reflect.Constructor.newInstance(Constructor.java:446)
06-10 09:15:24.277: ERROR/AndroidRuntime(228): at android.view.LayoutInflater.createView(LayoutInflater.java:500)
06-10 09:15:24.277: ERROR/AndroidRuntime(228): ... 23 more
06-10 09:15:24.277: ERROR/AndroidRuntime(228): Caused by: java.lang.NullPointerException
06-10 09:15:24.277: ERROR/AndroidRuntime(228): at com.google.android.maps.MapActivity.setupMapView(MapActivity.java:183)
06-10 09:15:24.277: ERROR/AndroidRuntime(228): at com.google.android.maps.MapView.<init>(MapView.java:279)
06-10 09:15:24.277: ERROR/AndroidRuntime(228): at com.google.android.maps.MapView.<init>(MapView.java:254)
06-10 09:15:24.277: ERROR/AndroidRuntime(228): ... 27 more
据我所知,我已按照文档中的说明完成了所有操作。我已将构建目标设置为Google API,我已将uses-library标记添加到我的Manifest,我正在使用Google API目标的模拟器中运行...
答案 0 :(得分:6)
问题是我在MapActivity中的setContentView()之后调用了super.onCreate()。
答案 1 :(得分:0)
您使用的是错误的xml for MapView
扩展MapActivity的类应该使用包含这样的东西的xml调用setContentView()
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<com.google.android.maps.MapView
android:id="@+id/racemap"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_x="0px"
android:enabled="true"
android:clickable="true"
android:apiKey="blahblahblah" />
</LinearLayout>
所以不使用layout_details.xml而是使用layout.xml
答案 2 :(得分:0)
将其插入MapView的xml声明
xmlns:android="http://schemas.android.com/apk/res/android"