package com.lzx.demo.ui;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.Toolbar;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import com.github.jdsjlzx.ItemDecoration.DividerDecoration;
import com.github.jdsjlzx.interfaces.OnItemClickListener;
import com.github.jdsjlzx.interfaces.OnItemLongClickListener;
import com.github.jdsjlzx.interfaces.OnLoadMoreListener;
import com.github.jdsjlzx.interfaces.OnNetWorkErrorListener;
import com.github.jdsjlzx.interfaces.OnRefreshListener;
import com.github.jdsjlzx.recyclerview.LRecyclerView;
import com.github.jdsjlzx.recyclerview.LRecyclerViewAdapter;
import com.github.jdsjlzx.recyclerview.ProgressStyle;
import com.lzx.demo.R;
import com.lzx.demo.adapter.DataAdapter;
import com.lzx.demo.bean.ItemModel;
import com.lzx.demo.util.AppToast;
import com.lzx.demo.util.NetworkUtils;
import java.lang.ref.WeakReference;
import java.util.ArrayList;
/**
* 带HeaderView的分页加载LinearLayout RecyclerView
*/
public class EndlessLinearLayoutActivity extends AppCompatActivity{
private static final String TAG = "lzx";
/**服务器端一共多少条数据*/
private static final int TOTAL_COUNTER = 34;//如果服务器没有返回总数据或者总页数，这里设置为最大值比如10000，什么时候没有数据了根据接口返回判断
/**每一页展示多少条数据*/
private static final int REQUEST_COUNT = 10;
/**已经获取到多少条数据了*/
private static int mCurrentCounter = 0;
private LRecyclerView mRecyclerView = null;
private DataAdapter mDataAdapter = null;
private PreviewHandler mHandler = new PreviewHandler(this);
private LRecyclerViewAdapter mLRecyclerViewAdapter = null;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.sample_ll_activity);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
mRecyclerView = (LRecyclerView) findViewById(R.id.list);
mDataAdapter = new DataAdapter(this);
mLRecyclerViewAdapter = new LRecyclerViewAdapter(mDataAdapter);
mRecyclerView.setAdapter(mLRecyclerViewAdapter);
DividerDecoration divider = new DividerDecoration.Builder(this)
.setHeight(R.dimen.default_divider_height)
.setPadding(R.dimen.default_divider_padding)
.setColorResource(R.color.split)
.build();
//mRecyclerView.setHasFixedSize(true);
mRecyclerView.addItemDecoration(divider);
mRecyclerView.setLayoutManager(new LinearLayoutManager(this));
mRecyclerView.setRefreshProgressStyle(ProgressStyle.LineSpinFadeLoader);
mRecyclerView.setArrowImageView(R.drawable.ic_pulltorefresh_arrow);
mRecyclerView.setLoadingMoreProgressStyle(ProgressStyle.BallSpinFadeLoader);
//add a HeaderView
final View header = LayoutInflater.from(this).inflate(R.layout.sample_header,(ViewGroup)findViewById(android.R.id.content), false);
mLRecyclerViewAdapter.addHeaderView(header);
mRecyclerView.setOnRefreshListener(new OnRefreshListener() {
@Override
public void onRefresh() {
mDataAdapter.clear();
mLRecyclerViewAdapter.notifyDataSetChanged();//fix bug:crapped or attached views may not be recycled. isScrap:false isAttached:true
mCurrentCounter = 0;
requestData();
}
});
mRecyclerView.setOnLoadMoreListener(new OnLoadMoreListener() {
@Override
public void onLoadMore() {
if (mCurrentCounter < TOTAL_COUNTER) {
// loading more
requestData();
} else {
//the end
mRecyclerView.setNoMore(true);
}
}
});
mRecyclerView.setLScrollListener(new LRecyclerView.LScrollListener() {
@Override
public void onScrollUp() {
}
@Override
public void onScrollDown() {
}
@Override
public void onScrolled(int distanceX, int distanceY) {
}
@Override
public void onScrollStateChanged(int state) {
}
});
//设置头部加载颜色
mRecyclerView.setHeaderViewColor(R.color.colorAccent, R.color.dark ,android.R.color.white);
//设置底部加载颜色
mRecyclerView.setFooterViewColor(R.color.colorAccent, R.color.dark ,android.R.color.white);
//设置底部加载文字提示
mRecyclerView.setFooterViewHint("拼命加载中","已经全部为你呈现了","网络不给力啊，点击再试一次吧");
mRecyclerView.refresh();
mLRecyclerViewAdapter.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(View view, int position) {
if (mDataAdapter.getDataList().size() > position) {
ItemModel item = mDataAdapter.getDataList().get(position);
AppToast.showShortText(getApplicationContext(), item.title);
mDataAdapter.remove(position);
}
}
});
mLRecyclerViewAdapter.setOnItemLongClickListener(new OnItemLongClickListener() {
@Override
public void onItemLongClick(View view, int position) {
ItemModel item = mDataAdapter.getDataList().get(position);
AppToast.showShortText(getApplicationContext(), "onItemLongClick - " + item.title);
}
});
}
private void notifyDataSetChanged() {
mLRecyclerViewAdapter.notifyDataSetChanged();
}
private void addItems(ArrayList<ItemModel> list) {
mDataAdapter.addAll(list);
mCurrentCounter += list.size();
}
private class PreviewHandler extends Handler {
private WeakReference<EndlessLinearLayoutActivity> ref;
PreviewHandler(EndlessLinearLayoutActivity activity) {
ref = new WeakReference<>(activity);
}
@Override
public void handleMessage(Message msg) {
final EndlessLinearLayoutActivity activity = ref.get();
if (activity == null || activity.isFinishing()) {
return;
}
switch (msg.what) {
case -1:
int currentSize = activity.mDataAdapter.getItemCount();
//模拟组装10个数据
ArrayList<ItemModel> newList = new ArrayList<>();
for (int i = 0; i < 10; i++) {
if (newList.size() + currentSize >= TOTAL_COUNTER) {
break;
}
ItemModel item = new ItemModel();
item.id = currentSize + i;
item.title = "item" + (item.id);
newList.add(item);
}
activity.addItems(newList);
activity.mRecyclerView.refreshComplete(REQUEST_COUNT);
break;
case -3:
activity.mRecyclerView.refreshComplete(REQUEST_COUNT);
activity.notifyDataSetChanged();
activity.mRecyclerView.setOnNetWorkErrorListener(new OnNetWorkErrorListener() {
@Override
public void reload() {
requestData();
}
});
break;
default:
break;
}
}
}
/**
* 模拟请求网络
*/
private void requestData() {
Log.d(TAG, "requestData");
new Thread() {
@Override
public void run() {
super.run();
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
//模拟一下网络请求失败的情况
if(NetworkUtils.isNetAvailable(getApplicationContext())) {
mHandler.sendEmptyMessage(-1);
} else {
mHandler.sendEmptyMessage(-3);
}
}
}.start();
}
@Override
public boolean onPrepareOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu_main_refresh, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
if (item.getItemId() == android.R.id.home) {
finish();
} else if (item.getItemId() == R.id.menu_refresh) {
mRecyclerView.forceToRefresh();
}
return true;
}
}