我正在创建一个使用MVP模式的android应用程序。对于依赖注入,我使用匕首2.我有一个抽象片段,它实现了“视图”接口,使其成为模型视图展示器中的视图。注入演示者子类查看android
public abstract class MediaDetailFragment extends Fragment implements DetailsMvpView {
private static final String RESOURCE = "resource";
private static final String POSTER_SIZE = "w342/";
@Inject DetailPresenter mDetailPresenter;
@Inject CreditPresenter mCreditPresenter;
@BindView(R.id.media_image_flipper) ControllableFlipper mImageFlipper;
@BindView(R.id.keyword_recyclerview) RecyclerView mKeywordRecyclerView;
@BindView(R.id.title_textview) TextView mTitleTextView;
@BindView(R.id.overview_content_textview) TextView mOverviewTextView;
@BindView(R.id.cast_recyclerview) CreditRecyclerView mCastRecyclerView;
@BindView(R.id.crew_recyclerview) CreditRecyclerView mCrewRecyclerView;
@BindView(R.id.empty_view) TextView mRecyclerviewEmpty;
@BindView(R.id.button_share) ImageButton mShare;
@BindView(R.id.button_trailers) ImageButton mTrailers;
@BindView(R.id.button_reviews) ImageButton mReviews;
@BindBool(R.bool.isTablet) boolean mIsTablet;
@OnClick(R.id.button_share) public void shareMedia(View view) {
startActivity(new Intent(Intent.ACTION_SEND)
.putExtra(Intent.EXTRA_TEXT, getActivity().getString(R.string.base_youtube_url)
+ POSTER_SIZE + mMedia.posterPath() + "\n\n"
+ mMedia.title() + "\n\n" + mMedia.overview())
.setType("text/plain"));
}
@OnClick(R.id.button_trailers) public void requestTrailers(View view) {
mDetailPresenter.loadMovies(mMedia.id());
}
@OnClick(R.id.button_reviews) public void requestReviews(View view) {
if (NetworkUtil.isNetworkConnected(getContext())) {
((FragmentHandler) getActivity()).onReviewsRequested(mMedia);
} else {
ViewUtil.displayNoNetworkSnackbar(getActivity());
}
}
private Media mMedia;
private DisplayMetrics mDisplayMetrics = new DisplayMetrics();
private OnGlobalLayoutListener mListener;
@Override
public void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mMedia = getArguments().getParcelable(RESOURCE);
}
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.media_details_fragment, container, false);
((BaseActivity) getActivity()).activityComponent().inject(this);
ButterKnife.bind(this, rootView);
getActivity().getWindowManager().getDefaultDisplay().getMetrics(mDisplayMetrics);
mTitleTextView.setText(mMedia.title());
mOverviewTextView.setText(mMedia.overview());
mKeywordRecyclerView.setAdapter(new KeywordAdapter(getContext()));
mCastRecyclerView.setAdapter(R.layout.item_credit_normal, mRecyclerviewEmpty);
mCrewRecyclerView.setAdapter(R.layout.item_credit_normal, mRecyclerviewEmpty);
mListener =() -> rootView.post(() -> {
if (mIsTablet) {
mImageFlipper.getLayoutParams().height =
ViewUtil.setHeightForAspectRatio(rootView.getWidth(), ViewUtil.STANDARD);
} else {
mImageFlipper.getLayoutParams().height =
ViewUtil.setHeightForAspectRatio(mDisplayMetrics.widthPixels, ViewUtil.STANDARD);
}
rootView.getViewTreeObserver().removeOnGlobalLayoutListener(mListener);
});
rootView.getViewTreeObserver().addOnGlobalLayoutListener(mListener);
return rootView;
}
@Override
public void onStart() {
super.onStart();
mDetailPresenter.attachView(this);
mDetailPresenter.loadImages(mMedia.id());
mDetailPresenter.loadKeywords(mMedia.id());
mCreditPresenter.attachCastView(mCastRecyclerView);
mCreditPresenter.attachCrewView(mCrewRecyclerView);
mCreditPresenter.loadCredits(mMedia.id());
}
@Override
public void onStop() {
mDetailPresenter.detachView();
mCreditPresenter.detachCastView();
mCreditPresenter.detachCrewView();
super.onStop();
}
@Override
public void showImages(String image) {
mImageFlipper.addImagePath(image);
}
@Override
public void showKeywords(List<String> keywords) {
((KeywordAdapter) mKeywordRecyclerView.getAdapter()).setKeywords(keywords);
}
@Override
public void showVideos(List<Video> videos) {
TrailerDialogFragment.newInstance(videos).show(getFragmentManager(), null);
}
@Override
public void showError() {
if (!NetworkUtil.isNetworkConnected(getContext())) {
ViewUtil.displayNoNetworkSnackbar(getActivity());
}
}
}
根据情况我会使用这个抽象视图的两个子类之一。正如你所看到的,我在视图中注入了一个“DetailsPresenter”。 DetailsPresenter也是一个具有两个子类(视图的每个子类都有一个子类)的抽象类。
但是,如果视图是MovieDetailFragment,它应该有一个MovieDetailPresenter,并且如果它是一个ShowDetailFragment,它应该有一个ShowDetailPresenter。
我的问题是:我应该在哪里实现检查它是什么样的视图并提供正确的DetailsPresenter的逻辑?我应该在Dagger模块中做(可能在返回演示者的方法中)?我应该在片段本身做到吗?
这是我的模块:
@Module
public class ConfigPersistentModule {
@Provides
DetailPresenter provideDetailPresenter(DataManager dataManager) {
return new MovieDetailPresenter(dataManager);
}
}
请帮助我。
呵呵,我终于结束了实现你说的到底是什么。花了一段时间才弄清楚。由于你的回答是正确的,+1并接受! –
好jub !!当你自己做时更好,因为你永远不会忘记这个概念。我给你一票,因为你的问题让我觉得;) –