MvpPresenter
public class MvpPresenter implements Contarct.Presenter {
private Contarct.View MvpView;
public MvpPresenter(Contarct.View mvpView) { MvpView = mvpView; MvpView.setPresenter(this); }
@Override public void start() { MvpView.showLoading(); GetData(); }
//学习 List data = new ArrayList();
private void GetData() { Observable.create(new ObservableOnSubscribe<List<String>>() { @Override public void subscribe(@NonNull ObservableEmitter<List<String>> e) throws Exception { for (int i = 0; i < 50; i++) { data.add( "学会了第"+i + "招"); } e.onNext(data); } }).subscribeOn(Schedulers.io()) .observeOn(AndroidSchedulers.mainThread()) .subscribe(new Observer<List<String>>() { @Override public void onSubscribe(Disposable d) {
}
@Override public void onNext(List<String> strings) { MvpView.hideLoading(); MvpView.setListItem(data); }
@Override public void onError(Throwable e) { MvpView.failed(); }
@Override public void onComplete() {
} }); }
@Override public void itemclick(int position) { MvpView.showMessage("放第" + position+"招"); }}
MvpActivity
public class MvpActivity extends AppCompatActivity implements Contarct.View, AdapterView.OnItemClickListener {
private ListView mvpListView; private Contarct.Presenter mPresenter; private ProgressBar pb;
@Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_mvp); mvpListView = (ListView) findViewById(R.id.mvp_listview); mvpListView.setOnItemClickListener(this); pb = (ProgressBar) findViewById(R.id.mvp_loading); new MvpPresenter(this); mPresenter.start(); }
@Override public void showLoading() { pb.setVisibility(View.VISIBLE); }
@Override public void hideLoading() { pb.setVisibility(View.GONE); }
@Override public void setListItem(List<String> data) { ArrayAdapter adapter = new ArrayAdapter(MvpActivity.this, android.R.layout.simple_list_item_1, data); mvpListView.setAdapter(adapter); }
@Override public void failed() { Toast.makeText(MvpActivity.this, "练习失败", Toast.LENGTH_SHORT).show(); }
@Override public void showMessage(String message) { Toast.makeText(this, message, Toast.LENGTH_SHORT).show(); }
@Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { mPresenter.itemclick(position); }
@Override public void setPresenter(Contarct.Presenter presenter) { this.mPresenter = presenter; }}
BasePresenter
public interface BasePresenter<T> {
void start();
}
BaseView
public interface BaseView<T> {
void setPresenter(T presenter);
}
Contarct
public interface Contarct {
interface View extends BaseView<Presenter> {
void showLoading();
void hideLoading();
void setListItem(List<String> data);
void failed();
void showMessage(String message);
}
interface Presenter extends BasePresenter {
void itemclick(int position);
}
}
代码十分通俗易懂,打个比喻,Contarct是武器库
,里面包含了机器人所有的使能,例如狼牙棒,流星锤,突火枪...,MvpActivity是空手机器人
,MvpPresenter就是这些武器的使用秘笈
,运行起来的流程就是机器人拿起狼牙棒,看了武林秘籍后,从此称霸武林
!