java.lang.ClassCastException: android.app.Application không thể được đúc để greendroid.app.GDApplication

Question

Tôi nhận được một ngoại lệ lớp diễn viên cụ thể là

java.lang.ClassCastException: android.app.Application cannot be cast to greendroid.app.GDApplication

khi tôi đang cố gắng sử dụng màu xanh lá cây thư viện droid trong project.Here của tôi là mã có liên quan. Tôi đã cố gắng tìm ra những gì đang xảy ra nhưng vẫn không có may mắn. Bất kỳ loại trợ giúp nào cũng sẽ được đánh giá cao. Cảm ơn bạn.

public class MainMenu extends GDActivity{ 
    private QuickActionWidget mBar; 
@Override 
protected void onCreate(Bundle savedInstanceState) { 
    // TODO Auto-generated method stub 
    super.onCreate(savedInstanceState); 
    setActionBarContentView(R.layout.mainmenu); 
     mBar = new QuickActionBar(this); 
     mBar.addQuickAction(new QuickAction(this, R.drawable.food, "food")); 

Button foodButton=(Button)findViewById(R.id.food); 




foodButton.setOnClickListener(new View.OnClickListener() { 

@Override 
public void onClick(View v) { 
    // TODO Auto-generated method stub 
    mBar.show(v); 

} 
}); 


} 

    } 

Đây là mainmenu.xml tôi

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
android:layout_width="match_parent" 
android:layout_height="match_parent" 
android:background="@drawable/back" 
android:orientation="vertical" > 
<RelativeLayout 

    android:layout_width="fill_parent" 
    android:layout_height="wrap_content"> 
<RelativeLayout 
    android:layout_alignParentBottom="true" 
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content"> 
    <Button 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_marginLeft="80dp" 
     android:id="@+id/menu" 
     android:background="@drawable/menu"></Button> 
    <Button 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_marginLeft="80dp" 
     android:id="@+id/food" 
     android:layout_toRightOf="@id/menu" 
     android:background="@drawable/food"></Button> 

</RelativeLayout> 
</LinearLayout> 

này LogCat tôi.

> 03-23 10:21:27.887: D/dalvikvm(395): GC_FOR_ALLOC freed 54K, 4% free 6389K/6595K, paused 48ms 
03-23 10:21:27.937: I/dalvikvm-heap(395): Grow heap (frag case) to 10.253MB for 4096016-byte allocation 
03-23 10:21:28.018: D/dalvikvm(395): GC_FOR_ALLOC freed <1K, 3% free 10389K/10631K, paused 47ms 
03-23 10:21:28.128: D/dalvikvm(395): GC_CONCURRENT freed <1K, 3% free 10389K/10631K, paused 3ms+2ms 
03-23 10:21:28.967: V/TLINE(395): new: android.text.TextLine@40654a10 
03-23 10:21:36.497: D/AndroidRuntime(395): Shutting down VM 
03-23 10:21:36.497: W/dalvikvm(395): threadid=1: thread exiting with uncaught exception (group=0x40014760) 
03-23 10:21:36.507: E/AndroidRuntime(395): FATAL EXCEPTION: main 
03-23 10:21:36.507: E/AndroidRuntime(395): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.bombil.ramada/com.bombil.ramada.MainMenu}: java.lang.ClassCastException: android.app.Application cannot be cast to greendroid.app.GDApplication 
03-23 10:21:36.507: E/AndroidRuntime(395): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1748) 
03-23 10:21:36.507: E/AndroidRuntime(395): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1764) 
03-23 10:21:36.507: E/AndroidRuntime(395): at android.app.ActivityThread.access$1500(ActivityThread.java:122) 
03-23 10:21:36.507: E/AndroidRuntime(395): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1002) 
03-23 10:21:36.507: E/AndroidRuntime(395): at android.os.Handler.dispatchMessage(Handler.java:99) 
03-23 10:21:36.507: E/AndroidRuntime(395): at android.os.Looper.loop(Looper.java:132) 
03-23 10:21:36.507: E/AndroidRuntime(395): at android.app.ActivityThread.main(ActivityThread.java:4025) 
03-23 10:21:36.507: E/AndroidRuntime(395): at java.lang.reflect.Method.invokeNative(Native Method) 
03-23 10:21:36.507: E/AndroidRuntime(395): at java.lang.reflect.Method.invoke(Method.java:491) 
03-23 10:21:36.507: E/AndroidRuntime(395): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:841) 
03-23 10:21:36.507: E/AndroidRuntime(395): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:599) 
03-23 10:21:36.507: E/AndroidRuntime(395): at dalvik.system.NativeStart.main(Native Method) 
03-23 10:21:36.507: E/AndroidRuntime(395): Caused by: java.lang.ClassCastException: android.app.Application cannot be cast to greendroid.app.GDApplication 
03-23 10:21:36.507: E/AndroidRuntime(395): at greendroid.app.GDActivity.getGDApplication(GDActivity.java:205) 
03-23 10:21:36.507: E/AndroidRuntime(395): at greendroid.app.GDActivity.onCreate(GDActivity.java:147) 
03-23 10:21:36.507: E/AndroidRuntime(395): at com.bombil.ramada.MainMenu.onCreate(MainMenu.java:18) 
03-23 10:21:36.507: E/AndroidRuntime(395): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1048) 
03-23 10:21:36.507: E/AndroidRuntime(395): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1712) 
03-23 10:21:36.507: E/AndroidRuntime(395): ... 11 more 
03-23 10:22:58.089: D/dalvikvm(446): GC_FOR_ALLOC freed 55K, 4% free 6389K/6595K, paused 48ms 
03-23 10:22:58.128: I/dalvikvm-heap(446): Grow heap (frag case) to 10.253MB for 4096016-byte allocation 
03-23 10:22:58.207: D/dalvikvm(446): GC_FOR_ALLOC freed <1K, 3% free 10389K/10631K, paused 46ms 
03-23 10:22:58.308: D/dalvikvm(446): GC_CONCURRENT freed <1K, 3% free 10389K/10631K, paused 4ms+2ms 
03-23 10:22:59.317: V/TLINE(446): new: android.text.TextLine@40654d68 
03-23 10:23:01.357: D/AndroidRuntime(446): Shutting down VM 
03-23 10:23:01.357: W/dalvikvm(446): threadid=1: thread exiting with uncaught exception (group=0x40014760) 
03-23 10:23:01.367: E/AndroidRuntime(446): FATAL EXCEPTION: main 
03-23 10:23:01.367: E/AndroidRuntime(446): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.bombil.ramada/com.bombil.ramada.MainMenu}: java.lang.ClassCastException: android.app.Application cannot be cast to greendroid.app.GDApplication 
03-23 10:23:01.367: E/AndroidRuntime(446): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1748) 
03-23 10:23:01.367: E/AndroidRuntime(446): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1764) 
03-23 10:23:01.367: E/AndroidRuntime(446): at android.app.ActivityThread.access$1500(ActivityThread.java:122) 
03-23 10:23:01.367: E/AndroidRuntime(446): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1002) 
03-23 10:23:01.367: E/AndroidRuntime(446): at android.os.Handler.dispatchMessage(Handler.java:99) 
03-23 10:23:01.367: E/AndroidRuntime(446): at android.os.Looper.loop(Looper.java:132) 
03-23 10:23:01.367: E/AndroidRuntime(446): at android.app.ActivityThread.main(ActivityThread.java:4025) 
03-23 10:23:01.367: E/AndroidRuntime(446): at java.lang.reflect.Method.invokeNative(Native Method) 
03-23 10:23:01.367: E/AndroidRuntime(446): at java.lang.reflect.Method.invoke(Method.java:491) 
03-23 10:23:01.367: E/AndroidRuntime(446): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:841) 
03-23 10:23:01.367: E/AndroidRuntime(446): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:599) 
03-23 10:23:01.367: E/AndroidRuntime(446): at dalvik.system.NativeStart.main(Native Method) 
03-23 10:23:01.367: E/AndroidRuntime(446): Caused by: java.lang.ClassCastException: android.app.Application cannot be cast to greendroid.app.GDApplication 
03-23 10:23:01.367: E/AndroidRuntime(446): at greendroid.app.GDActivity.getGDApplication(GDActivity.java:205) 
03-23 10:23:01.367: E/AndroidRuntime(446): at greendroid.app.GDActivity.onCreate(GDActivity.java:147) 
03-23 10:23:01.367: E/AndroidRuntime(446): at com.bombil.ramada.MainMenu.onCreate(MainMenu.java:18) 
03-23 10:23:01.367: E/AndroidRuntime(446): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1048) 
03-23 10:23:01.367: E/AndroidRuntime(446): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1712) 
03-23 10:23:01.367: E/AndroidRuntime(446): ... 11 more 
03-23 10:26:58.047: D/dalvikvm(490): GC_FOR_ALLOC freed 54K, 5% free 6311K/6595K, paused 100ms 
03-23 10:26:58.097: I/dalvikvm-heap(490): Grow heap (frag case) to 10.176MB for 4096016-byte allocation 
03-23 10:26:58.167: D/dalvikvm(490): GC_FOR_ALLOC freed <1K, 4% free 10310K/10631K, paused 39ms 
03-23 10:26:58.267: D/dalvikvm(490): GC_CONCURRENT freed <1K, 4% free 10310K/10631K, paused 5ms+4ms 
03-23 10:26:59.298: V/TLINE(490): new: android.text.TextLine@406513b8 
03-23 10:27:07.167: D/AndroidRuntime(490): Shutting down VM 
03-23 10:27:07.167: W/dalvikvm(490): threadid=1: thread exiting with uncaught exception (group=0x40014760) 
03-23 10:27:07.177: E/AndroidRuntime(490): FATAL EXCEPTION: main 
03-23 10:27:07.177: E/AndroidRuntime(490): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.bombil.ramada/com.bombil.ramada.MainMenu}: java.lang.ClassCastException: android.app.Application cannot be cast to greendroid.app.GDApplication 
03-23 10:27:07.177: E/AndroidRuntime(490): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1748) 
03-23 10:27:07.177: E/AndroidRuntime(490): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1764) 
03-23 10:27:07.177: E/AndroidRuntime(490): at android.app.ActivityThread.access$1500(ActivityThread.java:122) 
03-23 10:27:07.177: E/AndroidRuntime(490): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1002) 
03-23 10:27:07.177: E/AndroidRuntime(490): at android.os.Handler.dispatchMessage(Handler.java:99) 
03-23 10:27:07.177: E/AndroidRuntime(490): at android.os.Looper.loop(Looper.java:132) 
03-23 10:27:07.177: E/AndroidRuntime(490): at android.app.ActivityThread.main(ActivityThread.java:4025) 
03-23 10:27:07.177: E/AndroidRuntime(490): at java.lang.reflect.Method.invokeNative(Native Method) 
03-23 10:27:07.177: E/AndroidRuntime(490): at java.lang.reflect.Method.invoke(Method.java:491) 
03-23 10:27:07.177: E/AndroidRuntime(490): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:841) 
03-23 10:27:07.177: E/AndroidRuntime(490): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:599) 
03-23 10:27:07.177: E/AndroidRuntime(490): at dalvik.system.NativeStart.main(Native Method) 
03-23 10:27:07.177: E/AndroidRuntime(490): Caused by: java.lang.ClassCastException: android.app.Application cannot be cast to greendroid.app.GDApplication 
03-23 10:27:07.177: E/AndroidRuntime(490): at greendroid.app.GDActivity.getGDApplication(GDActivity.java:205) 
03-23 10:27:07.177: E/AndroidRuntime(490): at greendroid.app.GDActivity.onCreate(GDActivity.java:147) 
03-23 10:27:07.177: E/AndroidRuntime(490): at com.bombil.ramada.MainMenu.onCreate(MainMenu.java:18) 
03-23 10:27:07.177: E/AndroidRuntime(490): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1048) 
03-23 10:27:07.177: E/AndroidRuntime(490): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1712) 
03-23 10:27:07.177: E/AndroidRuntime(490): ... 11 more 
03-23 10:31:49.177: D/dalvikvm(567): GC_FOR_ALLOC freed 56K, 4% free 6389K/6595K, paused 47ms 
03-23 10:31:49.227: I/dalvikvm-heap(567): Grow heap (frag case) to 10.253MB for 4096016-byte allocation 
03-23 10:31:49.297: D/dalvikvm(567): GC_FOR_ALLOC freed <1K, 3% free 10389K/10631K, paused 40ms 
03-23 10:31:49.398: D/dalvikvm(567): GC_CONCURRENT freed <1K, 3% free 10389K/10631K, paused 3ms+2ms 
03-23 10:31:50.468: V/TLINE(567): new: android.text.TextLine@406405f8 
03-23 10:31:52.377: D/AndroidRuntime(567): Shutting down VM 
03-23 10:31:52.387: W/dalvikvm(567): threadid=1: thread exiting with uncaught exception (group=0x40014760) 
03-23 10:31:52.398: E/AndroidRuntime(567): FATAL EXCEPTION: main 
03-23 10:31:52.398: E/AndroidRuntime(567): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.bombil.ramada/com.bombil.ramada.MainMenu}: java.lang.ClassCastException: android.app.Application cannot be cast to greendroid.app.GDApplication 
03-23 10:31:52.398: E/AndroidRuntime(567): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1748) 
03-23 10:31:52.398: E/AndroidRuntime(567): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1764) 
03-23 10:31:52.398: E/AndroidRuntime(567): at android.app.ActivityThread.access$1500(ActivityThread.java:122) 
03-23 10:31:52.398: E/AndroidRuntime(567): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1002) 
03-23 10:31:52.398: E/AndroidRuntime(567): at android.os.Handler.dispatchMessage(Handler.java:99) 
03-23 10:31:52.398: E/AndroidRuntime(567): at android.os.Looper.loop(Looper.java:132) 
03-23 10:31:52.398: E/AndroidRuntime(567): at android.app.ActivityThread.main(ActivityThread.java:4025) 
03-23 10:31:52.398: E/AndroidRuntime(567): at java.lang.reflect.Method.invokeNative(Native Method) 
03-23 10:31:52.398: E/AndroidRuntime(567): at java.lang.reflect.Method.invoke(Method.java:491) 
03-23 10:31:52.398: E/AndroidRuntime(567): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:841) 
03-23 10:31:52.398: E/AndroidRuntime(567): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:599) 
03-23 10:31:52.398: E/AndroidRuntime(567): at dalvik.system.NativeStart.main(Native Method) 
03-23 10:31:52.398: E/AndroidRuntime(567): Caused by: java.lang.ClassCastException: android.app.Application cannot be cast to greendroid.app.GDApplication 
03-23 10:31:52.398: E/AndroidRuntime(567): at greendroid.app.GDActivity.getGDApplication(GDActivity.java:205) 
03-23 10:31:52.398: E/AndroidRuntime(567): at greendroid.app.GDActivity.onCreate(GDActivity.java:147) 
03-23 10:31:52.398: E/AndroidRuntime(567): at com.bombil.ramada.MainMenu.onCreate(MainMenu.java:18) 
03-23 10:31:52.398: E/AndroidRuntime(567): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1048) 
03-23 10:31:52.398: E/AndroidRuntime(567): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1712) 
03-23 10:31:52.398: E/AndroidRuntime(567): ... 11 more 
03-23 10:32:23.498: I/Process(567): Sending signal. PID: 567 SIG: 9 
03-23 10:32:31.847: D/dalvikvm(605): GC_FOR_ALLOC freed 57K, 4% free 6389K/6595K, paused 44ms 
03-23 10:32:31.887: I/dalvikvm-heap(605): Grow heap (frag case) to 10.253MB for 4096016-byte allocation 
03-23 10:32:31.967: D/dalvikvm(605): GC_FOR_ALLOC freed <1K, 3% free 10389K/10631K, paused 44ms 
03-23 10:32:32.057: D/dalvikvm(605): GC_CONCURRENT freed <1K, 3% free 10389K/10631K, paused 3ms+2ms 
03-23 10:32:32.857: V/TLINE(605): new: android.text.TextLine@40644090 
03-23 10:32:43.418: D/AndroidRuntime(605): Shutting down VM 
03-23 10:32:43.428: W/dalvikvm(605): threadid=1: thread exiting with uncaught exception (group=0x40014760) 
03-23 10:32:43.438: E/AndroidRuntime(605): FATAL EXCEPTION: main 
03-23 10:32:43.438: E/AndroidRuntime(605): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.bombil.ramada/com.bombil.ramada.MainMenu}: java.lang.ClassCastException: android.app.Application cannot be cast to greendroid.app.GDApplication 
03-23 10:32:43.438: E/AndroidRuntime(605): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1748) 
03-23 10:32:43.438: E/AndroidRuntime(605): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1764) 
03-23 10:32:43.438: E/AndroidRuntime(605): at android.app.ActivityThread.access$1500(ActivityThread.java:122) 
03-23 10:32:43.438: E/AndroidRuntime(605): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1002) 
03-23 10:32:43.438: E/AndroidRuntime(605): at android.os.Handler.dispatchMessage(Handler.java:99) 
03-23 10:32:43.438: E/AndroidRuntime(605): at android.os.Looper.loop(Looper.java:132) 
03-23 10:32:43.438: E/AndroidRuntime(605): at android.app.ActivityThread.main(ActivityThread.java:4025) 
03-23 10:32:43.438: E/AndroidRuntime(605): at java.lang.reflect.Method.invokeNative(Native Method) 
03-23 10:32:43.438: E/AndroidRuntime(605): at java.lang.reflect.Method.invoke(Method.java:491) 
03-23 10:32:43.438: E/AndroidRuntime(605): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:841) 
03-23 10:32:43.438: E/AndroidRuntime(605): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:599) 
03-23 10:32:43.438: E/AndroidRuntime(605): at dalvik.system.NativeStart.main(Native Method) 
03-23 10:32:43.438: E/AndroidRuntime(605): Caused by: java.lang.ClassCastException: android.app.Application cannot be cast to greendroid.app.GDApplication 
03-23 10:32:43.438: E/AndroidRuntime(605): at greendroid.app.GDActivity.getGDApplication(GDActivity.java:205) 
03-23 10:32:43.438: E/AndroidRuntime(605): at greendroid.app.GDActivity.onCreate(GDActivity.java:147) 
03-23 10:32:43.438: E/AndroidRuntime(605): at com.bombil.ramada.MainMenu.onCreate(MainMenu.java:18) 
03-23 10:32:43.438: E/AndroidRuntime(605): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1048) 
03-23 10:32:43.438: E/AndroidRuntime(605): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1712) 
03-23 10:32:43.438: E/AndroidRuntime(605): ... 11 more 
03-23 10:37:43.477: I/Process(605): Sending signal. PID: 605 SIG: 9 

Answer 1

Tôi chỉ có thể đoán được. Bạn có ứng dụng android extends GDApplication không?

Ví dụ (trong AndroidManifest.xml):

<application 
     android:icon="@drawable/ic_gdcatalog" 
     android:label="@string/app_name" 
     android:theme="@style/Theme.GDCatalog" 
     android:name=".CatalogApplication"> 
... 
... 

Bạn nên trong lớp học của bạn làm điều này:

public class CatalogApplication extends GDApplication { 

    @Override 
    public Class<?> getHomeActivityClass() { 
     return CatalogActivity.class; 
    } 

    @Override 
    public Intent getMainApplicationIntent() { 
     return new Intent(Intent.ACTION_VIEW, Uri.parse(getString(R.string.app_url))); 
    } 

} 

Bạn cũng có thể tải về GDCatalog sample Application và chạy nó trong Eclipse.