我是Dagger和DI的新手。我正在尝试使用以下模块注入PendingIntent和AlarmManager对象。
@Module(
injects = {
LocationMonitorService.class,
},
library = true,
addsTo = ApplicationModule.class,
complete = false
)
public class LocationMonitorServiceModule {
private Context mContext;
private Intent mIntent;
LocationMonitorServiceModule(Context context, Intent intent) {
mContext = context;
mIntent = intent;
System.out.println("location monitor service module");
}
@Provides PendingIntent provideGcmKeepAlivePendingIntent() {
return PendingIntent.getBroadcast(mContext, 0, mIntent, PendingIntent.FLAG_CANCEL_CURRENT);
}
@Provides AlarmManager provideGcmKeepAliveAlarmManager() {
return (AlarmManager) mContext.getSystemService(Context.ALARM_SERVICE);
}
}
这是我想要注入的课程。
public class LocationMonitorService extends Service {
@Inject DeviceLocationClient deviceLocationClient;
Intent gcmKeepAliveIntent;
@Inject AlarmManager alarmManager;
@Inject PendingIntent gcmKeepAlivePendingIntent;
@Inject GetMarkerRequestTimer markerRequestTimer;
@Inject PushRequestTimer pushRequestTimer;
@Inject Bus mBus;
@Override
public void onCreate() {
super.onCreate();
System.out.println("creating the LocationMonitorService");
gcmKeepAliveIntent = new Intent("com.gmail.npnster.first_project.gcmKeepAlive");
injectMe();
mBus.register(this);
alarmManager.setInexactRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP, 1000, 4*60*1000, gcmKeepAlivePendingIntent);
}
void injectMe() {
ObjectGraph objectGraph = Injector.getInstance().getObjectGraph();
System.out.println(String.format("currentGraph = %s", objectGraph));
ObjectGraph extendedGraph = objectGraph.plus(new LocationMonitorServiceModule(this,gcmKeepAliveIntent));
System.out.println(String.format("extendedGraph = %s", extendedGraph));
extendedGraph.inject(this);
}
更新
添加用于创建基本图形的模块
@Module(
injects = {
MapMarker.class,
ApiRequestRepository.class,
DeviceLocationClient.class,
GcmBroadcastReceiver.class,
HomeActivity.PlaceholderFragment.class,
MapActivity.WrapperFragment.class,
MainActivity.class,
RegisterGcmActivity.class,
SignUpActivity.class,
ApiExActivity.class,
LocationMonitorService.class,
MapMarker.class,
MapMarkers.class,
MapPresenter.class,
UsersListActivity.class,
PersistData.class,
LocationMonitorService.GetMarkerRequestTimer.class,
LocationMonitorService.PushRequestTimer.class,
ApiCheckerActivity.PlaceholderFragment.class, //can probably remove this class completely
MyApp.class
},
library = true,
complete = false
)
public class ApplicationModule {
private MyApp mApp;
public ApplicationModule(MyApp app) {
System.out.println("creating production version of ApplicationModule");
mApp = app;
}
@Provides @Singleton
public MyApp provideMyApp() {
return mApp;
}
@Provides
public GoogleMapMarkerParameters provideGoogleMapMarkerParameters() {
System.out.println("inside dagger -non mock");
return new GoogleMapMarkerParameters();
}
@Provides @Singleton
public Bus provideBus () {
return new Bus();
}
@Provides @Singleton
public PersistData providePersistData () {
System.out.println(String.format("mApp = %s", mApp));
return new PersistData(mApp);
}
@Provides
public LocationMonitorService.GetMarkerRequestTimer provideGetMarkerRequestTimer () {
return new LocationMonitorService.GetMarkerRequestTimer(10*60000,10000);
}
@Provides
public LocationMonitorService.PushRequestTimer providePushRequestTimer () {
return new LocationMonitorService.PushRequestTimer(10*60000,60000);
}
}
问题是我从未通过objectGraph.plus（）步骤。
这是一个logcat输出的片段。
请注意currentGraph = .... 但缺乏 extendedGraph = ....
没有注射成员＆＃34;错误是有道理的，因为它看起来并没有将模块添加到图表中
08-23 13:16:51.825 I/System.out( 3319): creating the LocationMonitorService
08-23 13:16:51.825 I/System.out( 3319): currentGraph = dagger.ObjectGraph$DaggerObjectGraph@b0fb4d08
08-23 13:16:51.825 I/System.out( 3319): location monitor service module
08-23 13:16:51.835 D/AndroidRuntime( 3319): Shutting down VM
08-23 13:16:51.835 W/dalvikvm( 3319): threadid=1: thread exiting with uncaught exception (group=0xb0ccfb20)
08-23 13:16:51.835 I/Process ( 3319): Sending signal. PID: 3319 SIG: 9
08-23 13:16:51.835 W/InputDispatcher( 1260): channel 'b12b5970 com.gmail.npnster.first_project/com.gmail.npnster.first_project.MainActivity (server)' ~ Consumer closed input channel or an error occurred. events=0x9
08-23 13:16:51.835 E/InputDispatcher( 1260): channel 'b12b5970 com.gmail.npnster.first_project/com.gmail.npnster.first_project.MainActivity (server)' ~ Channel is unrecoverably broken and will be disposed!
08-23 13:16:51.835 E/AndroidRuntime( 3319): FATAL EXCEPTION: main
08-23 13:16:51.835 E/AndroidRuntime( 3319): Process: com.gmail.npnster.first_project, PID: 3319
08-23 13:16:51.835 E/AndroidRuntime( 3319): java.lang.RuntimeException: Unable to create service com.gmail.npnster.first_project.LocationMonitorService: java.lang.IllegalStateException: Errors creating object graph:
08-23 13:16:51.835 E/AndroidRuntime( 3319): android.app.AlarmManager has no injectable members. Do you want to add an injectable constructor? required by class com.gmail.npnster.first_project.LocationMonitorService
08-23 13:16:51.835 E/AndroidRuntime( 3319): android.app.PendingIntent has no injectable members. Do you want to add an injectable constructor? required by class com.gmail.npnster.first_project.LocationMonitorService
08-23 13:16:51.835 E/AndroidRuntime( 3319): at android.app.ActivityThread.handleCreateService(ActivityThread.java:2582)
08-23 13:16:51.835 E/AndroidRuntime( 3319): at android.app.ActivityThread.access$1800(ActivityThread.java:135)
08-23 13:16:51.835 E/AndroidRuntime( 3319): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1278)
08-23 13:16:51.835 E/AndroidRuntime( 3319): at android.os.Handler.dispatchMessage(Handler.java:102)
08-23 13:16:51.835 E/AndroidRuntime( 3319): at android.os.Looper.loop(Looper.java:136)
08-23 13:16:51.835 E/AndroidRuntime( 3319): at android.app.ActivityThread.main(ActivityThread.java:5017)
08-23 13:16:51.835 E/AndroidRuntime( 3319): at java.lang.reflect.Method.invokeNative(Native Method)
08-23 13:16:51.835 E/AndroidRuntime( 3319): at java.lang.reflect.Method.invoke(Method.java:515)
08-23 13:16:51.835 E/AndroidRuntime( 3319): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
08-23 13:16:51.835 E/AndroidRuntime( 3319): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
08-23 13:16:51.835 E/AndroidRuntime( 3319): at dalvik.system.NativeStart.main(Native Method)
08-23 13:16:51.835 E/AndroidRuntime( 3319): Caused by: java.lang.IllegalStateException: Errors creating object graph:
08-23 13:16:51.835 E/AndroidRuntime( 3319): android.app.AlarmManager has no injectable members. Do you want to add an injectable constructor? required by class com.gmail.npnster.first_project.LocationMonitorService
08-23 13:16:51.835 E/AndroidRuntime( 3319): android.app.PendingIntent has no injectable members. Do you want to add an injectable constructor? required by class com.gmail.npnster.first_project.LocationMonitorService
08-23 13:16:51.835 E/AndroidRuntime( 3319): at dagger.internal.ThrowingErrorHandler.handleErrors(ThrowingErrorHandler.java:34)
08-23 13:16:51.835 E/AndroidRuntime( 3319): at dagger.internal.Linker.linkRequested(Linker.java:182)
08-23 13:16:51.835 E/AndroidRuntime( 3319): at dagger.internal.Linker.linkAll(Linker.java:109)
08-23 13:16:51.835 E/AndroidRuntime( 3319): at dagger.ObjectGraph$DaggerObjectGraph.linkEverything(ObjectGraph.java:244)
08-23 13:16:51.835 E/AndroidRuntime( 3319): at dagger.ObjectGraph$DaggerObjectGraph.plus(ObjectGraph.java:203)
08-23 13:16:51.835 E/AndroidRuntime( 3319): at com.gmail.npnster.first_project.LocationMonitorService.injectMe(LocationMonitorService.java:50)
08-23 13:16:51.835 E/AndroidRuntime( 3319): at com.gmail.npnster.first_project.LocationMonitorService.onCreate(LocationMonitorService.java:35)
08-23 13:16:51.835 E/AndroidRuntime( 3319): at android.app.ActivityThread.handleCreateService(ActivityThread.java:2572)
08-23 13:16:51.835 E/AndroidRuntime( 3319): ... 10 more
08-23 13:16:51.835 W/ActivityManager( 1260): Force finishing activity com.gmail.npnster.first_project/.HomeActivity
08-23 13:16:51.835 I/ActivityManager( 1260): Process com.gmail.npnster.first_project (pid 3319) has died.
08-23 13:16:51.835 W/ActivityManager( 1260): Force removing ActivityRecord{b11d7a80 u0 com.gmail.npnster.first_project/.MainActivity t28}: app died, no saved state
08-23 13:16:51.855 W/InputDispatcher( 1260): Attempted to unregister already unregistered input channel 'b12b5970 com.gmail.npnster.first_project/com.gmail.npnster.first_project.MainActivity (server)'
08-23 13:16:51.855 I/WindowState( 1260): WIN DEATH: Window{b12b5970 u0 com.gmail.npnster.first_project/com.gmail.npnster.first_project.MainActivity}
答案 0 :(得分：0)
我确实通过从基本模块中的injects = {...}列表中删除LocationMonitorrService.class来设法使其工作。
添加到基本模块时，我的LocationMonitorServiceModule可以注入LocationMonitorService类，但由于我向LocationMonitorService类添加了更多@Injects（由新模块提供），因此基本模块不再能够注入该类。
虽然我有这个工作，并且似乎有一定意义，但它似乎仍然有点黑魔法。