问题:启动 anIntentService
会生成一个RuntimeException
.
我一无所知。如果您需要更多信息,请询问。日志:
D/dalvikvm( 6839): newInstance failed: no <init>()
D/AndroidRuntime( 6839): Shutting down VM
W/dalvikvm( 6839): threadid=1: thread exiting with uncaught exception (group=0x40015560)
E/AndroidRuntime( 6839): FATAL EXCEPTION: main
E/AndroidRuntime( 6839): java.lang.RuntimeException: Unable to instantiate service org.xyz.android.service.MyService: java.lang.InstantiationException: org.xyz.android.service.MyService
E/AndroidRuntime( 6839): at android.app.ActivityThread.handleCreateService(ActivityThread.java:1929)
E/AndroidRuntime( 6839): at android.app.ActivityThread.access$2500(ActivityThread.java:117)
E/AndroidRuntime( 6839): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:985)
E/AndroidRuntime( 6839): at android.os.Handler.dispatchMessage(Handler.java:99)
E/AndroidRuntime( 6839): at android.os.Looper.loop(Looper.java:130)
E/AndroidRuntime( 6839): at android.app.ActivityThread.main(ActivityThread.java:3683)
E/AndroidRuntime( 6839): at java.lang.reflect.Method.invokeNative(Native Method)
E/AndroidRuntime( 6839): at java.lang.reflect.Method.invoke(Method.java:507)
E/AndroidRuntime( 6839): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
E/AndroidRuntime( 6839): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
E/AndroidRuntime( 6839): at dalvik.system.NativeStart.main(Native Method)
E/AndroidRuntime( 6839): Caused by: java.lang.InstantiationException: org.xyz.android.service.MyService
E/AndroidRuntime( 6839): at java.lang.Class.newInstanceImpl(Native Method)
E/AndroidRuntime( 6839): at java.lang.Class.newInstance(Class.java:1409)
E/AndroidRuntime( 6839): at android.app.ActivityThread.handleCreateService(ActivityThread.java:1926)
E/AndroidRuntime( 6839): ... 10 more
此代码调用服务(从 a 调用ContentProvider
):
Intent i = new Intent(
getContext(),
MyService.class);
i.putStringArrayListExtra(EXTRA_MISSING, missingMonths);
i.putExtra(EXTRA_URI, uri);
i.putExtra(EXTRA_START, startTime);
i.putExtra(EXTRA_END, endTime);
getContext().startService(i);
这是IntentService
相关的代码块(只有两种方法。当然,除了 asynctask 本身):
public MyService(String name) {
super("MyService");
}
@Override
protected void onHandleIntent(Intent intent) {
// ... do stuff
new DownloaderTask().execute(missingMonths);
}