地圖視圖無法正常工作

嗨，我是一名Android開發新手，我試圖在我的應用程序中集成地圖視圖，並且給出了錯誤。我已經獲得了我的API密鑰並且已經雙重檢查過它。我已經粘貼了我的代碼以及佈局文件和日誌文件。可以請任何人幫忙。謝謝。地圖視圖無法正常工作

MainActivity.java 

package com.vitarkasolutions.tracker; 

import android.os.Bundle; 

import com.google.android.gms.maps.MapView; 
import com.google.android.maps.MapActivity; 



public class MainActivity extends MapActivity { 

    MapView mapview; 
    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 
     mapview=(MapView)findViewById(R.id.myMapView); 
    } 

    @Override 
    protected boolean isRouteDisplayed() { 
     // TODO Auto-generated method stub 
     return false; 
    } 

} 



    activity_main.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:paddingBottom="@dimen/activity_vertical_margin" 
     android:paddingLeft="@dimen/activity_horizontal_margin" 
     android:paddingRight="@dimen/activity_horizontal_margin" 
     android:paddingTop="@dimen/activity_vertical_margin" 
     tools:context=".MainActivity" > 

     <TextView 
      android:id="@+id/cordinates " 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_alignParentTop="true" 
      android:text="Your Location X- and Y- " 
      /> 
     <Button 
      android:id="@+id/button1" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_alignRight="@+id/cordinates " 
      android:layout_alignTop="@+id/cordinates " 
      android:layout_marginRight="46dp" 
      android:layout_marginTop="56dp" 
      android:text="Button" /> 

     <com.google.android.maps.MapView 
      android:id="@+id/myMapView" 
      android:layout_width="match_parent" 
      android:layout_height="match_parent" 
      android:layout_alignParentLeft="true" 
      android:layout_below="@+id/button1" 
      android:layout_marginTop="24dp" 
      android:apiKey="mymapkey" 
      android:clickable="true" 
      android:enabled="true" > 
     </com.google.android.maps.MapView> 


    </RelativeLayout> 







Logcat 
04-06 17:56:28.489: E/AndroidRuntime(1798): FATAL EXCEPTION: main 
04-06 17:56:28.489: E/AndroidRuntime(1798): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.vitarkasolutions.tracker/com.vitarkasolutions.tracker.MainActivity}: java.lang.ClassNotFoundException: Didn't find class "com.vitarkasolutions.tracker.MainActivity" on path: DexPathList[[zip file "/data/app/com.vitarkasolutions.tracker-2.apk"],nativeLibraryDirectories=[/data/app-lib/com.vitarkasolutions.tracker-2, /vendor/lib, /system/lib]] 
04-06 17:56:28.489: E/AndroidRuntime(1798):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2277) 
04-06 17:56:28.489: E/AndroidRuntime(1798):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2403) 
04-06 17:56:28.489: E/AndroidRuntime(1798):  at android.app.ActivityThread.access$600(ActivityThread.java:165) 
04-06 17:56:28.489: E/AndroidRuntime(1798):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1373) 
04-06 17:56:28.489: E/AndroidRuntime(1798):  at android.os.Handler.dispatchMessage(Handler.java:107) 
04-06 17:56:28.489: E/AndroidRuntime(1798):  at android.os.Looper.loop(Looper.java:194) 
04-06 17:56:28.489: E/AndroidRuntime(1798):  at android.app.ActivityThread.main(ActivityThread.java:5391) 
04-06 17:56:28.489: E/AndroidRuntime(1798):  at java.lang.reflect.Method.invokeNative(Native Method) 
04-06 17:56:28.489: E/AndroidRuntime(1798):  at java.lang.reflect.Method.invoke(Method.java:525) 
04-06 17:56:28.489: E/AndroidRuntime(1798):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:833) 
04-06 17:56:28.489: E/AndroidRuntime(1798):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600) 
04-06 17:56:28.489: E/AndroidRuntime(1798):  at dalvik.system.NativeStart.main(Native Method) 
04-06 17:56:28.489: E/AndroidRuntime(1798): Caused by: java.lang.ClassNotFoundException: Didn't find class "com.vitarkasolutions.tracker.MainActivity" on path: DexPathList[[zip file "/data/app/com.vitarkasolutions.tracker-2.apk"],nativeLibraryDirectories=[/data/app-lib/com.vitarkasolutions.tracker-2, /vendor/lib, /system/lib]] 
04-06 17:56:28.489: E/AndroidRuntime(1798):  at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:53) 
04-06 17:56:28.489: E/AndroidRuntime(1798):  at java.lang.ClassLoader.loadClass(ClassLoader.java:501) 
04-06 17:56:28.489: E/AndroidRuntime(1798):  at java.lang.ClassLoader.loadClass(ClassLoader.java:461) 
04-06 17:56:28.489: E/AndroidRuntime(1798):  at android.app.Instrumentation.newActivity(Instrumentation.java:1119) 
04-06 17:56:28.489: E/AndroidRuntime(1798):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2268) 
04-06 17:56:28.489: E/AndroidRuntime(1798):  ... 11 more

來源

2014-04-06 Varun Ajay Gupta

這條線應該可以幫助您：

"Caused by: java.lang.ClassNotFoundException: Didn't find class  "com.vitarkasolutions.tracker.MainActivity" on path: DexPathList[[zip file  "/data/app/com.vitarkasolutions.tracker-2.apk"],nativeLibraryDirectories=[/data/app- lib/com.vitarkasolutions.tracker-2, /vendor/lib, /system/lib]]"

And here is the answer

來源

2014-04-06 12:56:16

地圖視圖無法正常工作

回答

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