LocalMusicActivity.java

package com.dingmouren.dingdingmusic.ui.localmusic;

import android.animation.Animator;
import android.app.ActivityOptions;
import android.content.ComponentName;
import android.content.Intent;
import android.content.ServiceConnection;
import android.os.Bundle;
import android.os.Handler;
import android.os.IBinder;
import android.os.Message;
import android.os.Messenger;
import android.os.RemoteException;
import android.support.v4.widget.SwipeRefreshLayout;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.view.ViewAnimationUtils;
import android.view.animation.AccelerateDecelerateInterpolator;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.TextView;

import com.dingmouren.dingdingmusic.Constant;
import com.dingmouren.dingdingmusic.MyApplication;
import com.dingmouren.dingdingmusic.R;
import com.dingmouren.dingdingmusic.base.BaseActivity;
import com.dingmouren.dingdingmusic.bean.MusicBean;
import com.dingmouren.dingdingmusic.service.MediaPlayerService;
import com.dingmouren.dingdingmusic.ui.musicplay.PlayingActivity;
import com.jiongbull.jlog.JLog;

import java.lang.ref.WeakReference;
import java.util.List;

import butterknife.BindView;

/**
 * Created by dingmouren on 2017/1/17.
 * 本地歌曲列表
 */

public class LocalMusicActivity extends BaseActivity implements LocalMusicConstract.View{
    private static final String TAG = LocalMusicActivity.class.getName();
    @BindView(R.id.toolbar) Toolbar mToolbar;
    @BindView(R.id.recycler) RecyclerView mRecycler;
    @BindView(R.id.swipe_refersh) SwipeRefreshLayout mSwipeRefresh;
    @BindView(R.id.tv_empty)TextView mTvEmpty;
    @BindView(R.id.container)  RelativeLayout mRootLayout;
    private LinearLayoutManager mLayoutManager;
    private LocalMusicConstract.Presenter mPresenter;
    private LocalMusicAdapter mAdapter;
    private Messenger mServiceMessenger;
    Messenger mMessengerClient;
    private MyHandler myHandler;
    @Override
    public int setLayoutResourceID() {
        return R.layout.activity_localmusic;
    }

    @Override
    public void init(Bundle savedInstanceState) {
        bindService(new Intent(this, MediaPlayerService.class),mServiceConnection,BIND_AUTO_CREATE);
        myHandler = new MyHandler(this);
        mMessengerClient = new Messenger(myHandler);
    }



    @Override
    public void initView() {

        mToolbar.setTitle(R.string.txt_local_music);
        setSupportActionBar(mToolbar);
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);

        mAdapter = new LocalMusicAdapter(this);
        mLayoutManager = new LinearLayoutManager(this);
        mRecycler.setLayoutManager(mLayoutManager);
        mRecycler.setHasFixedSize(true);
        mRecycler.setAdapter(mAdapter);

        //揭露动画
        mRootLayout.post(new Runnable() {
            @Override
            public void run() {
                mRootLayout.setVisibility(View.VISIBLE);
                Animator animator = createRevealAnimator(false,0,0);
                animator.start();

            }
        });


    }

    @Override
    public void initListener() {
        mToolbar.setNavigationOnClickListener((view)-> onBackPressed());//点击箭头返回
        mAdapter.setOnItemClickListener((view, position) -> playSong(position));
        mSwipeRefresh.setOnRefreshListener(()-> mPresenter.requestData());
    }

    @Override
    public void initData() {
        mPresenter = new LocalMusicPresenter((LocalMusicConstract.View) this);
        setRefresh(true);
        mPresenter.requestData();
    }


    @Override
    public void setData(List<MusicBean> list) {
        mAdapter.setList(list);
        if (null != list && 0 < list.size()){
            mTvEmpty.setVisibility(View.GONE);
        }else {
            mTvEmpty.setVisibility(View.VISIBLE);
        }
        mAdapter.notifyDataSetChanged();
        setRefresh(false);
    }

    @Override
    public void setRefresh(boolean refresh) {
        mSwipeRefresh.setRefreshing(refresh);
    }

    @Override
    protected void onDestroy() {
        unbindService(mServiceConnection);
        if (null != myHandler){
            myHandler.removeCallbacksAndMessages(null);
            myHandler = null;
        }
        super.onDestroy();
//        MyApplication.getRefWatcher().watch(this);
    }


    ServiceConnection mServiceConnection = new ServiceConnection() {
        @Override
        public void onServiceConnected(ComponentName componentName, IBinder iBinder) {
            mServiceMessenger = new Messenger(iBinder);
            //连接到服务
            if (null != mServiceMessenger){
                Message msgToService = Message.obtain();
                msgToService.replyTo = mMessengerClient;
                msgToService.what = Constant.LOCAL_MUSIC_ACTIVITY;
                try {
                    mServiceMessenger.send(msgToService);
                } catch (RemoteException e) {
                    e.printStackTrace();
                }
            }
        }

        @Override
        public void onServiceDisconnected(ComponentName componentName) {

        }
    };


    /**
     * 播放被点击的歌曲
     * @param position
     */
    private void playSong(int position){
       Intent intent = new Intent(this, PlayingActivity.class);
        intent.putExtra("position",position);
        intent.putExtra("flag",Constant.MUSIC_LOCAL);
        JLog.e(TAG,"点击本地的一首音乐");
        startActivity(intent, ActivityOptions.makeSceneTransitionAnimation(this).toBundle());
    }

    /**
     * 揭露动画
     */
    private Animator createRevealAnimator( boolean exit,int x, int y) {
        float hypot = (float) Math.hypot(mRootLayout.getHeight(),mRootLayout.getWidth());
        float startRadius = exit ? hypot : 0;
        float endRadius = exit ? 0 : hypot;

        Animator animator = ViewAnimationUtils.createCircularReveal(mRootLayout,x,y,startRadius,endRadius);
        animator.setDuration(800);
        animator.setInterpolator(new AccelerateDecelerateInterpolator());
        if (exit){
            animator.addListener(animatorListenerExit);
        }
        return animator;
    }

    private Animator.AnimatorListener animatorListenerExit = new Animator.AnimatorListener() {
        @Override
        public void onAnimationStart(Animator animation) {
        }

        @Override
        public void onAnimationEnd(Animator animation) {
            //动画结束时，销毁当前Activity
            mRootLayout.setVisibility(View.INVISIBLE);//在finish()的时候会闪屏的现象，先不可见，再销毁就不会闪屏了
           finish();
        }

        @Override
        public void onAnimationCancel(Animator animation) {
        }

        @Override
        public void onAnimationRepeat(Animator animation) {
        }
    };
    @Override
    public void onBackPressed() {
            Animator animator = createRevealAnimator(true, mRootLayout.getWidth()/2, mRootLayout.getHeight()/2);
            animator.start();
    }

    static class MyHandler extends Handler{
        private WeakReference<LocalMusicActivity> weakActivity;
        public MyHandler(LocalMusicActivity activity) {
            weakActivity = new WeakReference<LocalMusicActivity>(activity);
        }

        @Override
        public void handleMessage(Message msgFromService) {
            LocalMusicActivity activity = weakActivity.get();
            if (null == activity) return;
            switch (msgFromService.what){
                case Constant.MEDIA_PLAYER_SERVICE_SONG_PLAYING://通过Bundle传递对象,显示正在播放的歌曲
                    JLog.e(TAG,"收到消息了");
                    Bundle bundle = msgFromService.getData();
                    activity.mAdapter.showPlaying((MusicBean) bundle.getSerializable(Constant.MEDIA_PLAYER_SERVICE_MODEL_PLAYING));
                    activity.mAdapter.notifyDataSetChanged();
                    break;
            }
            super.handleMessage(msgFromService);
        }
    }
}