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.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Toast;
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.github.jdsjlzx.util.RecyclerViewStateUtils;
import com.github.jdsjlzx.view.LoadingFooter;
import com.lzx.demo.R;
import com.lzx.demo.adapter.SwipeMenuAdapter;
import com.lzx.demo.bean.ItemModel;
import com.lzx.demo.util.NetworkUtils;
import com.lzx.demo.util.TLog;
import com.lzx.demo.view.SampleHeader;
import java.lang.ref.WeakReference;
import java.util.ArrayList;
/**
* 滑动删除
*/
public class SwipeDeleteActivity 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 = 64;
/**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 SwipeMenuAdapter mDataAdapter = null;
private PreviewHandler mHandler = new PreviewHandler(this);
private LRecyclerViewAdapter mLRecyclerViewAdapter = null;
private boolean isRefresh = false;
@Override
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);
ArrayList<ItemModel> dataList = new ArrayList<>();
for (int i = 0; i < 10; i++) {
ItemModel itemModel = new ItemModel();
itemModel.title = "item" + i;
dataList.add(itemModel);
mCurrentCounter += dataList.size();
}
mDataAdapter = new SwipeMenuAdapter(this);
mDataAdapter.setDataList(dataList);
mDataAdapter.setOnDelListener(new SwipeMenuAdapter.onSwipeListener() {
@Override
public void onDel(int pos) {
Toast.makeText(SwipeDeleteActivity.this, "删除:" + pos, Toast.LENGTH_SHORT).show();
//RecyclerView关于notifyItemRemoved的那点小事 参考：http://blog.csdn.net/jdsjlzx/article/details/52131528
mDataAdapter.getDataList().remove(pos);
mDataAdapter.notifyItemRemoved(pos);//推荐用这个
if(pos != (mDataAdapter.getDataList().size())){ // 如果移除的是最后一个，忽略 注意：这里的mDataAdapter.getDataList()不需要-1，因为上面已经-1了
mDataAdapter.notifyItemRangeChanged(pos, mDataAdapter.getDataList().size() - pos);
}
//且如果想让侧滑菜单同时关闭，需要同时调用 ((CstSwipeDelMenu) holder.itemView).quickClose();
}
@Override
public void onTop(int pos) {//置顶功能有bug，后续解决
TLog.error("onTop pos = " + pos);
ItemModel itemModel = mDataAdapter.getDataList().get(pos);
mDataAdapter.getDataList().remove(pos);
mDataAdapter.notifyItemRemoved(pos);
mDataAdapter.getDataList().add(0, itemModel);
mDataAdapter.notifyItemInserted(0);
if(pos != (mDataAdapter.getDataList().size())){ // 如果移除的是最后一个，忽略
mDataAdapter.notifyItemRangeChanged(0, mDataAdapter.getDataList().size() - 1,"jdsjlzx");
}
mRecyclerView.scrollToPosition(0);
}
});
mLRecyclerViewAdapter = new LRecyclerViewAdapter(mDataAdapter);
mRecyclerView.setAdapter(mLRecyclerViewAdapter);
mRecyclerView.setLayoutManager(new LinearLayoutManager(this));
mRecyclerView.setRefreshProgressStyle(ProgressStyle.BallSpinFadeLoader);
mRecyclerView.setArrowImageView(R.drawable.ic_pulltorefresh_arrow);
mLRecyclerViewAdapter.addHeaderView(new SampleHeader(this));
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;
isRefresh = true;
requestData();
}
});
mRecyclerView.refresh();
//侧滑删除请不要使用下面接口，SwipeMenuAdapter内部实现item点击事件
/*mLRecyclerViewAdapter.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(View view, int position) {
ItemModel item = mDataAdapter.getDataList().get(position);
AppToast.showShortText(SwipeDeleteActivity.this, item.title);
}
});*/
}
private void notifyDataSetChanged() {
mLRecyclerViewAdapter.notifyDataSetChanged();
}
private void addItems(ArrayList<ItemModel> list) {
mDataAdapter.addAll(list);
mCurrentCounter += list.size();
}
private static class PreviewHandler extends Handler {
private WeakReference<SwipeDeleteActivity> ref;
PreviewHandler(SwipeDeleteActivity activity) {
ref = new WeakReference<>(activity);
}
@Override
public void handleMessage(Message msg) {
final SwipeDeleteActivity activity = ref.get();
if (activity == null || activity.isFinishing()) {
return;
}
switch (msg.what) {
case -1:
if(activity.isRefresh){
activity.mDataAdapter.clear();
mCurrentCounter = 0;
}
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);
activity.notifyDataSetChanged();
break;
case -2:
activity.notifyDataSetChanged();
break;
case -3:
activity.mRecyclerView.refreshComplete(REQUEST_COUNT);
activity.notifyDataSetChanged();
break;
default:
break;
}
}
}
private View.OnClickListener mFooterClick = new View.OnClickListener() {
@Override
public void onClick(View v) {
RecyclerViewStateUtils.setFooterViewState(SwipeDeleteActivity.this, mRecyclerView, REQUEST_COUNT, LoadingFooter.State.Loading, null);
requestData();
}
};
/**
* 模拟请求网络
*/
private void requestData() {
Log.d(TAG, "requestData");
new Thread() {
@Override
public void run() {
super.run();
try {
Thread.sleep(800);
} catch (InterruptedException e) {
e.printStackTrace();
}
//模拟一下网络请求失败的情况
if(NetworkUtils.isNetAvailable(SwipeDeleteActivity.this)) {
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;
}
}