Android的扩展:: = MapActivity GT&; ClassNotFound的异常 [英] Android::Extending MapActivity => classNotFound Exception
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问题描述
我想使一个图形页面,但在扩展MapActivity抛出一个ClassNotFoundException:
/ AndroidRuntime(374):在android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2585)
E / AndroidRuntime(374):在android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
E / AndroidRuntime(374):在android.app.ActivityThread.access $ 2300(ActivityThread.java:125)
E / AndroidRuntime(374):在android.app.ActivityThread $ H.handleMessage(ActivityThread.java:2033)
E / AndroidRuntime(374):在android.os.Handler.dispatchMessage(Handler.java:99)
E / AndroidRuntime(374):在android.os.Looper.loop(Looper.java:123)
E / AndroidRuntime(374):在android.app.ActivityThread.main(ActivityThread.java:4627)
E / AndroidRuntime(374):在java.lang.reflect.Method.invokeNative(本机方法)
E / AndroidRuntime(374):在java.lang.reflect.Method.invoke(Method.java:521)
E / AndroidRuntime(374):在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:868)
E / AndroidRuntime(374):在com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
E / AndroidRuntime(374):在dalvik.system.NativeStart.main(本机方法)
E / AndroidRuntime(374):抛出java.lang.ClassNotFoundException:致com.androidcourse.phonemapper.view.MapShowActivity装载机dalvik.system.PathClassLoader[/system/framework/com.google.android.maps.jar:/data/app/com.androidcourse.phonemapper-2.apk]
E / AndroidRuntime(374):在dalvik.system.PathClassLoader.findClass(PathClassLoader.java:243)
E / AndroidRuntime(374):在java.lang.ClassLoader.loadClass(ClassLoader.java:573)
E / AndroidRuntime(374):在java.lang.ClassLoader.loadClass(ClassLoader.java:532)
E / AndroidRuntime(374):在android.app.Instrumentation.newActivity(Instrumentation.java:1021)
E / AndroidRuntime(374):在android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2577)
我有一个谷歌地图API密钥,我已成立了项目成为谷歌的API,我使用的是谷歌Android API AVD(模拟器),我也有我的AndroidManifest.xml中的标记。
<?XML版本=1.0编码=UTF-8&GT?;
<清单的xmlns:机器人=http://schemas.android.com/apk/res/android
包=com.androidcourse.phonemapper安卓版code =1
机器人:=的versionName1.0> <采用-SDK安卓的minSdkVersion =8/>
<使用许可权的android:NAME =android.permission.INTERNET对/>
<使用许可权的android:NAME =android.permission.ACCESS_COARSE_LOCATION>< /使用许可权>
<使用许可权的android:NAME =android.permission.ACCESS_FINE_LOCATION>< /使用许可权>
<应用机器人:图标=@绘制/图标机器人:标签=@字符串/ APP_NAME> <使用库机器人:名字=com.google.android.maps/>
.........
<活动机器人:view.WelcomeActivityNAME =机器人:标签=@字符串/ APP_NAME>
&所述;意图滤光器>
<作用机器人:名字=android.intent.action.MAIN/>
<类机器人:名字=android.intent.category.LAUNCHER/>
&所述; /意图滤光器>
< /活性GT;
<的RelativeLayout的xmlns:机器人=http://schemas.android.com/apk/res/android
机器人:ID =@ + ID / mainlayout
机器人:方向=垂直
机器人:layout_width =FILL_PARENT
机器人:layout_height =FILL_PARENT> < com.google.android.maps.MapView
机器人:ID =@ + ID /图形页面
机器人:layout_width =FILL_PARENT
机器人:layout_height =FILL_PARENT
机器人:可点击=真
机器人:apiKey =api_key_is_here_just_wont_show_it_to_everybody
/>
< / RelativeLayout的>
解决方案
尝试设置包com.androidcourse.phonemapper.view
<清单的xmlns:机器人=http://schemas.android.com/apk/res/android
包=com.androidcourse.phonemapper.view安卓版code =1
机器人:=的versionName1.0>
然后引用它:
<活动机器人:名字=。WelcomeActivity
I'd like to make a MapView, but extending the MapActivity throws a classNotFoundException:
/AndroidRuntime( 374): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2585)
E/AndroidRuntime( 374): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
E/AndroidRuntime( 374): at android.app.ActivityThread.access$2300(ActivityThread.java:125)
E/AndroidRuntime( 374): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
E/AndroidRuntime( 374): at android.os.Handler.dispatchMessage(Handler.java:99)
E/AndroidRuntime( 374): at android.os.Looper.loop(Looper.java:123)
E/AndroidRuntime( 374): at android.app.ActivityThread.main(ActivityThread.java:4627)
E/AndroidRuntime( 374): at java.lang.reflect.Method.invokeNative(Native Method)
E/AndroidRuntime( 374): at java.lang.reflect.Method.invoke(Method.java:521)
E/AndroidRuntime( 374): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
E/AndroidRuntime( 374): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
E/AndroidRuntime( 374): at dalvik.system.NativeStart.main(Native Method)
E/AndroidRuntime( 374): Caused by: java.lang.ClassNotFoundException: com.androidcourse.phonemapper.view.MapShowActivity in loader dalvik.system.PathClassLoader[/system/framework/com.google.android.maps.jar:/data/app/com.androidcourse.phonemapper-2.apk]
E/AndroidRuntime( 374): at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:243)
E/AndroidRuntime( 374): at java.lang.ClassLoader.loadClass(ClassLoader.java:573)
E/AndroidRuntime( 374): at java.lang.ClassLoader.loadClass(ClassLoader.java:532)
E/AndroidRuntime( 374): at android.app.Instrumentation.newActivity(Instrumentation.java:1021)
E/AndroidRuntime( 374): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2577)
I have a Google Maps API key, I had set the project to be for Google APIs, I am using an Android Google API AVD(emulator) and I did include the tag in my AndroidManifest.xml.
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.androidcourse.phonemapper" android:versionCode="1"
android:versionName="1.0">
<uses-sdk android:minSdkVersion="8" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"></uses-permission>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"></uses-permission>
<application android:icon="@drawable/icon" android:label="@string/app_name">
<uses-library android:name="com.google.android.maps" />
.................
<activity android:name=".view.WelcomeActivity" android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/mainlayout"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<com.google.android.maps.MapView
android:id="@+id/mapview"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:clickable="true"
android:apiKey="api_key_is_here_just_wont_show_it_to_everybody"
/>
</RelativeLayout>
解决方案
Try setting package to "com.androidcourse.phonemapper.view":
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.androidcourse.phonemapper.view" android:versionCode="1"
android:versionName="1.0">
and then referencing it:
<activity android:name=".WelcomeActivity"
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