ZUI易入门Android之MVP实践

在入门MVP案例之前我们现对Activity基类进行创建

@Retention(RUNTIME)  //运行时 注解
@Target(TYPE) // 类 接口 注解
public @interface ViewInject {
    int mainlayoutid()  default  -1;
}

 

public abstract class BaseActivity extends LifeCircleMvpActivity {

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        ViewInject annotation = this.getClass().getAnnotation(ViewInject.class);
        if (annotation != null) {
            int mainlayoutid = annotation.mainlayoutid();
            if (mainlayoutid > 0) {
                setContentView(mainlayoutid);
                bindView();
                afterBindView();
            } else {
                throw new RuntimeException("mainlayoutid < 0");
            }
        } else {
            throw new RuntimeException("annotation  = null");
        }
    }

    // 模板方法 设计模式
    public abstract void afterBindView();

    // View 的依赖注入绑定
    private void bindView() {
        ButterKnife.bind(this);
    }
}

具体
模块开发案例app欢迎页面三秒可以进入MainActivity

@ViewInject(mainlayoutid = R.layout.activity_splash)
public class SplashActivity extends BaseActivity implements ISplashActivityContract.Iview{

    @BindView(R.id.vv_play)
    FullScreenVideoView mVideoView;
//    @BindView(R.id.splash_vs)
//    ViewStub mViewStub;
    @BindView(R.id.tv_splash_timer)
    TextView mTvTimer;
    private ISplashActivityContract.IPresenter timerPresenter;

    @Override
    public void afterBindView() {
        initTimerPresenter();
        initListener();
        initVideo();
    }

    private void initTimerPresenter() {
        timerPresenter = new SplashTimerPresenter(this);
        timerPresenter.initTimer();
    }


    private void initVideo() {
        mVideoView.setVideoURI(Uri.parse("android.resource://" + getPackageName() + File.separator + R.raw.splash));
        mVideoView.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
            @Override
            public void onPrepared(MediaPlayer mp) {
                mp.start();
            }
        });
    }

    private void initListener() {
        mTvTimer.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                startActivity(new Intent(SplashActivity.this, MainActivity.class));
                finish();
            }
        });
        mVideoView.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
            @Override
            public void onCompletion(MediaPlayer mp) {
                mp.start();
            }
        });
    }


    @Override
    public void setTvTimer(String s) {
        /*if (TextUtils.equals(s, "跳过")) {
            View inflate = mViewStub.inflate();
            inflate.setVisibility(View.VISIBLE);
            inflate.findViewById(R.id.tv_splash_timer).setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    startActivity(new Intent(SplashActivity.this, MainActivity.class));
                    finish();
                }
            });
        }*/
        mTvTimer.setText(s);
    }

}

上面的View和Presenter接口都是新开新建的, Google android-architecture-todo-mvp-dagger sample 是把View和Presenter放在一个Contract类中, 如下所示 :

public interface ISplashActivityContract {

    @MvpEmptyViewFactory
    interface Iview extends IMvpView {
        void setTvTimer(String timer);
    }

    interface IPresenter extends ILifeCircle {
        void initTimer();
    }

}

public class SplashTimerPresenter extends BasePresenter implements ISplashActivityContract.IPresenter{


    private CustomCountDownTimer timer;

    public SplashTimerPresenter(ISplashActivityContract.Iview view) {
        super(view);
    }

    @Override
    public void initTimer() {
        timer = new CustomCountDownTimer(5, new CustomCountDownTimer.ICountDownHandler() {
            @Override
            public void onTicker(int time) {
                getView().setTvTimer(time + "秒");
            }

            @Override
            public void onFinish() {
                getView().setTvTimer("跳过");
            }
        });
        timer.start();
    }

    public void cancel() {
        timer.cancel();
    }


    @Override
    public void onDestroy() {
        super.onDestroy();
        cancel();
    }

    /**
     * 防止 空指针异常
     * @return
     */
//    @Override
//    protected ISplashActivityContract.Iview getEmptyView() {
//        return ISplashActivityContract.emptyView;
//    }
}