assistant-android/app/src/main/java/com/gh/gamecenter/NewsOrRaidersActivity.java

package com.gh.gamecenter;

import android.os.Bundle;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup.LayoutParams;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.TextView;

import com.gh.base.AppController;
import com.gh.base.BaseActivity;
import com.gh.common.view.VerticalItemDecoration;
import com.gh.gamecenter.adapter.NewsOrRaidersListAdapter;
import com.gh.gamecenter.eventbus.EBConcernChanged;
import com.gh.gamecenter.eventbus.EBNetworkState;

/**
 * @author 温冠超
 * @email 294299195@qq.com
 * @date 2015-8-10 首页资讯或攻略板块
 */
public class NewsOrRaidersActivity extends BaseActivity {

	private RecyclerView news_list;
	private LinearLayoutManager layoutManager;
	private NewsOrRaidersListAdapter adapter;
	private LinearLayout news_ll_loading, reuse_no_connection;
	private TextView news_tv_label;
	private RelativeLayout news_rl_label;
	private RelativeLayout.LayoutParams rparams;

	private String type;

	private boolean isDestroy;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);

		type = getIntent().getStringExtra("type");

		isDestroy = false;

		View contentView = View.inflate(this,
				R.layout.activity_news_or_raiders, null);

		init(contentView, type);

		reuse_no_connection.setOnClickListener(new OnClickListener() {
			@Override
			public void onClick(View v) {
				news_list.setVisibility(View.GONE);
				news_ll_loading.setVisibility(View.VISIBLE);
				reuse_no_connection.setVisibility(View.GONE);
				adapter = new NewsOrRaidersListAdapter(
						NewsOrRaidersActivity.this, news_list, news_ll_loading,
						reuse_no_connection, type, news_rl_label, news_tv_label);
				news_list.setAdapter(adapter);
			}
		});

		rparams = new RelativeLayout.LayoutParams(LayoutParams.MATCH_PARENT,
				LayoutParams.WRAP_CONTENT);

		news_list.setHasFixedSize(true);
		layoutManager = new LinearLayoutManager(this);
		news_list.setLayoutManager(layoutManager);

		adapter = new NewsOrRaidersListAdapter(this, news_list,
				news_ll_loading, reuse_no_connection, type, news_rl_label,
				news_tv_label);

		news_list.setAdapter(adapter);
		news_list.setOnTouchListener(new View.OnTouchListener() {
			@Override
			public boolean onTouch(View v, MotionEvent event) {

				if (event.getAction() == MotionEvent.ACTION_UP) {
					v.performClick();
				}
				if (news_ll_loading.getVisibility() == View.VISIBLE) {
					return true;
				} else {
					return false;
				}
			}
		});
		news_list.setOnScrollListener(new RecyclerView.OnScrollListener() {

			@Override
			public void onScrolled(RecyclerView recyclerView, int dx, int dy) {

				super.onScrolled(recyclerView, dx, dy);

				int position = layoutManager.findFirstVisibleItemPosition();

				if (adapter.getPosition_today() != -1
						&& position >= adapter.getPosition_today()
						&& position <= adapter.getTodaySize()
								+ adapter.getPosition_today()) {
					news_tv_label.setText("今天");
					news_tv_label.setBackgroundResource(R.drawable.title_red);
				} else if (adapter.getPosition_before() != -1
						&& position >= adapter.getPosition_before()) {
					news_tv_label.setText("昨天/以前");
					news_tv_label.setBackgroundResource(R.drawable.title_gray);
				} else if (adapter.getPosition_mygame() != -1) {
					news_tv_label.setText("我的游戏");
					news_tv_label.setBackgroundResource(R.drawable.title_blue);
				}

				if (position == adapter.getPosition_today() - 1
						|| position == adapter.getPosition_before() - 1) {
					int buttom = layoutManager.findViewByPosition(position)
							.getBottom();
					if (buttom <= news_rl_label.getHeight()) {
						rparams.topMargin = buttom - news_rl_label.getHeight();
						news_rl_label.setLayoutParams(rparams);
					} else {
						rparams.topMargin = 0;
						news_rl_label.setLayoutParams(rparams);
					}
				} else {
					rparams.topMargin = 0;
					news_rl_label.setLayoutParams(rparams);
				}
			}

			@Override
			public void onScrollStateChanged(RecyclerView recyclerView,
											 int newState) {
				super.onScrollStateChanged(recyclerView, newState);
				if (!isDestroy && newState == RecyclerView.SCROLL_STATE_IDLE
						&& layoutManager.findLastVisibleItemPosition() + 1 == adapter.getItemCount()) {
					if (!adapter.isRemove() && !adapter.isLoading() && !adapter.isNetworkError()) {
						adapter.addList();
					}
				}
			}
		});
		news_list.addItemDecoration(new VerticalItemDecoration(this, 1));
	}

	public void onEventMainThread(EBConcernChanged busSeven) {
		adapter.updateMyGameNews();
	}

	public void onEventMainThread(EBNetworkState busNetworkState) {
		if (busNetworkState.isNetworkConnected()) {
			if (reuse_no_connection.getVisibility() == View.VISIBLE) {
				news_list.setVisibility(View.GONE);
				news_ll_loading.setVisibility(View.VISIBLE);
				reuse_no_connection.setVisibility(View.GONE);
				adapter = new NewsOrRaidersListAdapter(this, news_list,
						news_ll_loading, reuse_no_connection, type,
						news_rl_label, news_tv_label);
				news_list.setAdapter(adapter);
			} else if (adapter.isNetworkError()) {
				adapter.setNetworkError(false);
				adapter.notifyItemChanged(adapter.getItemCount());
				adapter.addList();
			}
		}
	}

	@Override
	protected void onDestroy() {
		super.onDestroy();
		isDestroy = true;
		AppController.canclePendingRequests(NewsOrRaidersActivity.class);
		news_list = null;
		layoutManager = null;
		adapter = null;
		news_ll_loading = null;
		reuse_no_connection = null;
		news_tv_label = null;
		news_rl_label = null;
		rparams = null;
		type = null;
	}

}