我有一个带有 viewModel 的视图,它可以观察我的 LiveData。我从存储库(从 Room 或 WebAPI 获取数据)获取数据。我已经实现了一个 NetworkBoundResource 抽象类,因此我可以以更简洁的方式管理数据加载。此类中使用了 MediatorLiveData 对象:
private final MediatorLiveData<Resource<ResultType>> result = new MediatorLiveData<>();
崩溃发生在我的构造函数的第一行:
@MainThread
public NetworkBoundResource() {
result.setValue(Resource.<ResultType>loading(null));
final LiveData<ResultType> dbSource = loadFromDb();
result.addSource(dbSource, new Observer<ResultType>() {
@Override
public void onChanged(@Nullable ResultType newData) {
result.removeSource(dbSource);
if(shouldFetch(newData))
{
fetchFromNetwork(dbSource);
} else {
result.setValue(Resource.success(newData));
}
}
});
}
这是错误消息:
java.lang.NoSuchMethodError: No virtual method iteratorWithAdditions()Landroid/arch/core/internal/SafeIterableMap$ListIterator; in class Landroid/arch/core/internal/SafeIterableMap; or its super classes (declaration of 'android.arch.core.internal.SafeIterableMap' appears in /data/app/com.example.smostofi.upswing-XxPvhI837wneIYVTOrU2Dw==/split_lib_dependencies_apk.apk:classes25.dex)
at android.arch.lifecycle.LiveData.dispatchingValue(LiveData.java:145)
at android.arch.lifecycle.LiveData.setValue(LiveData.java:293)
at android.arch.lifecycle.MutableLiveData.setValue(MutableLiveData.java:33)
at com.example.smostofi.upswing.data.Util.NetworkBoundResource.<init>(NetworkBoundResource.java:44)
第一次在这里提问,希望我提供了足够的信息!提前致谢!