Java tutorial
/* * Copyright (C) 2015 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.dldzkj.app.renxing.mainfragment; import android.content.Context; import android.content.Intent; import android.graphics.Color; import android.os.Bundle; import android.support.annotation.Nullable; import android.support.v4.app.Fragment; import android.util.Log; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.view.View; import android.view.ViewGroup; import android.widget.AdapterView; import android.widget.BaseAdapter; import android.widget.CheckBox; import android.widget.CompoundButton; import android.widget.LinearLayout; import android.widget.TextView; import android.widget.Toast; import com.alibaba.fastjson.JSON; import com.alibaba.fastjson.JSONArray; import com.dldzkj.app.renxing.R; import com.dldzkj.app.renxing.bbs.BBSDetailsActivity; import com.dldzkj.app.renxing.bean.ConstantValue; import com.dldzkj.app.renxing.bean.MyPostBBS; import com.dldzkj.app.renxing.customview.OnRefreshListener; import com.dldzkj.app.renxing.customview.RefreshListView; import com.dldzkj.app.renxing.utils.SPUtils; import com.dldzkj.app.renxing.utils.StringUtils; import com.dldzkj.app.renxing.utils.WebUtils; import com.lidroid.xutils.exception.HttpException; import java.util.ArrayList; import java.util.HashMap; import java.util.Iterator; import java.util.List; import java.util.Map; import java.util.Set; import butterknife.ButterKnife; import butterknife.InjectView; public class MyPostFragment0 extends Fragment implements OnRefreshListener, View.OnClickListener { @InjectView(R.id.list) RefreshListView recyclerview; @InjectView(R.id.select_all) TextView selectAll; @InjectView(R.id.delete_btn) TextView deleteBtn; @InjectView(R.id.bottom) LinearLayout bottom; private ArrayList<MyPostBBS> datas; private BBSMainAdapter2 adapter; private String paramsPid = "0", paramsType = "0"; private boolean isRefresh = false; private final int paramsNum = 10; private boolean btnEnable = true; private Map<Integer, Boolean> isCheckedMap; private MenuItem menuDelete; @Nullable @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View v = inflater.inflate(R.layout.fragment_only_recyclerview, container, false); ButterKnife.inject(this, v); initDatas(); deleteBtn.setOnClickListener(this); selectAll.setOnClickListener(this); return v; } @Override public void onCreate(@Nullable Bundle savedInstanceState) { super.onCreate(savedInstanceState); setHasOptionsMenu(true); } @Override public void onStart() { super.onStart(); } private void initDatas() { isCheckedMap = new HashMap<Integer, Boolean>(); datas = new ArrayList<MyPostBBS>(); /* for (int i = 0; i < 30; i++) { BBSModel model = new BBSModel(); model.setBoardID(i / 7); model.setTitle("?" + i); model.setAddTime(i + "?"); model.setStates(i%2); data.add(model); }*/ adapter = new BBSMainAdapter2(getActivity(), datas); recyclerview.setAdapter(adapter); recyclerview.setOnRefreshListener(this); recyclerview.setOnItemClickListener(new AdapterView.OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { if (position == 0 || position == adapter.getCount() + 1) return;//headerView? if (!adapter.isDeleteMode()) { startActivity(new Intent(MyPostFragment0.this.getActivity(), BBSDetailsActivity.class) .putExtra("pid", Integer.parseInt(datas.get(position - 1).getPID()))); } } }); WebRequst(paramsPid, paramsType); } @Override public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { inflater.inflate(R.menu.sample_actions, menu); menuDelete = menu.findItem(R.id.action_settings); super.onCreateOptionsMenu(menu, inflater); } @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case R.id.action_settings: if (!btnEnable) { return true; } if (datas.size() == 0) { Toast.makeText(this.getActivity(), "?", Toast.LENGTH_SHORT).show(); } else { if (adapter.isDeleteMode()) {//? item.setIcon(R.drawable.ic_delede); item.setTitle(""); bottom.setVisibility(View.GONE); adapter.setDeleteMode(false); } else {// item.setIcon(null); item.setTitle("?"); bottom.setVisibility(View.VISIBLE); adapter.setDeleteMode(true); } adapter.notifyDataSetChanged(); } return true; } return super.onOptionsItemSelected(item); } @Override public void onDestroyView() { super.onDestroyView(); ButterKnife.reset(this); } private void WebRequst(String PostsID, final String Type) { HashMap<String, Object> map = new HashMap<String, Object>(); map.put("UserID", SPUtils.getLoginId(getActivity())); map.put("PostsID", PostsID); map.put("Type", Type); map.put("Num", paramsNum); WebUtils.sendPostNoProgress(this.getActivity(), ConstantValue.GetMyPostsList, map, new WebUtils.OnWebListenr() { @Override public void onSuccess(boolean isSuccess, String msg, String data) { isRefresh = false; if (isSuccess) { JSONArray arr = JSON.parseArray(data); ArrayList<MyPostBBS> webData = new ArrayList<MyPostBBS>(); for (int i = 0; i < arr.size(); i++) { MyPostBBS model = JSON.parseObject(arr.get(i).toString(), MyPostBBS.class); isCheckedMap.put(Integer.parseInt(model.getPID()), false); webData.add(model); } if (Type.equals("2")) {// //???? datas.addAll(datas.size(), webData); } else { datas.addAll(0, webData); } webData = null; adapter.notifyDataSetChanged(); } else { Toast.makeText(MyPostFragment0.this.getActivity(), msg, Toast.LENGTH_SHORT).show(); } if (Type.equals("2")) {// recyclerview.hideFooterView(); } else { recyclerview.hideHeaderView(); } } @Override public void onFailed(HttpException error, String msg) { isRefresh = false; recyclerview.hideFooterView(); recyclerview.hideHeaderView(); } }); } private MyPostBBS getModelByRid(int rid) { for (MyPostBBS item : datas) { if (Integer.parseInt(item.getPID()) == rid) { return item; } } return null; } private void WebRequstDeletePost(String PostsID) { HashMap<String, Object> map = new HashMap<String, Object>(); map.put("PostsID", PostsID); WebUtils.sendPostNoProgress(this.getActivity(), ConstantValue.DeleteMyPosts, map, new WebUtils.OnWebListenr() { @Override public void onSuccess(boolean isSuccess, String msg, String data) { btnEnable = true; menuDelete.setIcon(R.drawable.ic_delede); menuDelete.setTitle(""); adapter.setDeleteMode(false); bottom.setVisibility(View.GONE); if (isSuccess) { if (deleteList != null && deleteList.size() > 0) { for (Integer pid : deleteList) { MyPostBBS tempModel = getModelByRid(pid); if (tempModel != null) { datas.remove(tempModel); isCheckedMap.remove(pid); } } deleteList.clear(); } adapter.notifyDataSetChanged(); Toast.makeText(MyPostFragment0.this.getActivity(), "?", Toast.LENGTH_SHORT) .show(); } else { Toast.makeText(MyPostFragment0.this.getActivity(), msg, Toast.LENGTH_SHORT).show(); } } @Override public void onFailed(HttpException error, String msg) { btnEnable = true; menuDelete.setIcon(R.drawable.ic_delede); menuDelete.setTitle(""); adapter.setDeleteMode(false); bottom.setVisibility(View.GONE); } }); } @Override public void onDownPullRefresh() { if (adapter.isDeleteMode()) { recyclerview.hideHeaderView(); Toast.makeText(this.getActivity(), "?", Toast.LENGTH_SHORT).show(); return; } if (datas.size() == 0) { WebRequst(paramsPid, paramsType); return; } if (isRefresh) { recyclerview.hideHeaderView(); } else { paramsPid = datas.get(0).getPID(); paramsType = "1"; isRefresh = true; WebRequst(paramsPid, paramsType); } } @Override public void onLoadingMore() { if (adapter.isDeleteMode()) { recyclerview.hideFooterView(); Toast.makeText(this.getActivity(), "?", Toast.LENGTH_SHORT).show(); return; } if (datas.size() == 0) { WebRequst(paramsPid, paramsType); return; } if (isRefresh) { recyclerview.hideFooterView(); } else { paramsPid = datas.get(datas.size() - 1).getPID(); paramsType = "2"; isRefresh = true; WebRequst(paramsPid, paramsType); } } private List<Integer> deleteList; @Override public void onClick(View v) { switch (v.getId()) { case R.id.delete_btn: if (deleteList == null) deleteList = new ArrayList<Integer>(); for (Integer key : isCheckedMap.keySet()) { if (isCheckedMap.get(key)) { deleteList.add(key); } } if (deleteList.size() == 0) {//?? menuDelete.setIcon(R.drawable.ic_delede); menuDelete.setTitle(""); bottom.setVisibility(View.GONE); adapter.setDeleteMode(false); return; } StringBuffer sb = new StringBuffer(); for (Integer key : deleteList) { sb.append(key + "#"); } String pids = sb.substring(0, sb.length() - 1); Log.d("zxl", "pids:" + pids); btnEnable = false; WebRequstDeletePost(pids); break; case R.id.select_all: Set<Integer> set = isCheckedMap.keySet(); Iterator<Integer> iterator = set.iterator(); if (selectAll.getText().equals("")) { while (iterator.hasNext()) { Integer keyId = iterator.next(); isCheckedMap.put(keyId, true); } selectAll.setText("?"); deleteBtn.setTextColor(Color.parseColor("#eb5959")); } else { while (iterator.hasNext()) { Integer keyId = iterator.next(); isCheckedMap.put(keyId, false); } selectAll.setText(""); deleteBtn.setTextColor(Color.parseColor("#666666")); } adapter.notifyDataSetChanged(); break; } } class BBSMainAdapter2 extends BaseAdapter { private List<MyPostBBS> datas; private Context context; private boolean isDeleteMode; public BBSMainAdapter2(Context context, List<MyPostBBS> datas) { super(); this.context = context; this.datas = datas; } public boolean isDeleteMode() { return isDeleteMode; } public void setDeleteMode(boolean isDeleteMode) { this.isDeleteMode = isDeleteMode; } @Override public int getCount() { return datas.size(); } @Override public Object getItem(int position) { return datas.get(position); } @Override public long getItemId(int position) { return position; } @Override public View getView(int position, View convertView, ViewGroup parent) { MyViewHolder holder = null; if (convertView == null) { convertView = LayoutInflater.from(context).inflate(R.layout.bbs_main_item, parent, false); holder = new MyViewHolder(convertView); convertView.setTag(holder); } else { holder = (MyViewHolder) convertView.getTag(); } setItemData(holder, position); return convertView; } class MyViewHolder { TextView tv_itemTitle; TextView tv_itemTime; TextView tv_itemState; CheckBox cb; public MyViewHolder(View convertView) { cb = (CheckBox) convertView.findViewById(R.id.checkbox); tv_itemTitle = (TextView) convertView.findViewById(R.id.bbs_item_title); tv_itemTime = (TextView) convertView.findViewById(R.id.bbs_item_time); tv_itemState = (TextView) convertView.findViewById(R.id.bbs_item_state); } } private void setItemData(final MyViewHolder holder, final int position) { final MyPostBBS mContent = datas.get(position); holder.tv_itemTitle.setText(StringUtils.DecodeURLStr(mContent.getTitle())); holder.tv_itemTime.setText(mContent.getAddTime()); final int id = Integer.parseInt(mContent.getPID()); switch (Integer.parseInt(mContent.getEnabled())) { case 1: holder.tv_itemState.setText(""); break; case 0: holder.tv_itemState.setText(""); holder.tv_itemState.setCompoundDrawablesWithIntrinsicBounds( context.getResources().getDrawable(R.drawable.ic_audited_not), null, null, null); holder.tv_itemState.setTextColor(context.getResources().getColor(R.color.app_gray_font)); break; } if (isDeleteMode) { holder.cb.setVisibility(View.VISIBLE); holder.cb.setChecked(isCheckedMap.get(id)); holder.cb.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() { @Override public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { if (isChecked) { isCheckedMap.put(id, true); } else { isCheckedMap.put(id, false); } } }); } else { holder.cb.setVisibility(View.GONE); } } } }