Java tutorial
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In no event and under no legal theory, * whether in tort (including negligence), contract, or otherwise, * unless required by applicable law (such as deliberate and grossly * negligent acts) or agreed to in writing, shall any Contributor be * liable to You for damages, including any direct, indirect, special, * incidental, or consequential damages of any character arising as a * result of this License or out of the use or inability to use the * Work (including but not limited to damages for loss of goodwill, * work stoppage, computer failure or malfunction, or any and all * other commercial damages or losses), even if such Contributor * has been advised of the possibility of such damages. * * 9. Accepting Warranty or Additional Liability. While redistributing * the Work or Derivative Works thereof, You may choose to offer, * and charge a fee for, acceptance of support, warranty, indemnity, * or other liability obligations and/or rights consistent with this * License. However, in accepting such obligations, You may act only * on Your own behalf and on Your sole responsibility, not on behalf * of any other Contributor, and only if You agree to indemnify, * defend, and hold each Contributor harmless for any liability * incurred by, or claims asserted against, such Contributor by reason * of your accepting any such warranty or additional liability. * * END OF TERMS AND CONDITIONS * * * Copyright (c) Bug 2016. * * */ package cn.scujcc.bug.bitcoinplatformandroid.fragment; import android.app.ProgressDialog; import android.database.Cursor; import android.database.sqlite.SQLiteDatabase; import android.os.AsyncTask; import android.os.Bundle; import android.support.annotation.Nullable; import android.support.v4.widget.SwipeRefreshLayout; import android.support.v7.widget.LinearLayoutManager; import android.support.v7.widget.RecyclerView; import android.util.Log; import android.util.TypedValue; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.Button; import android.widget.TextView; import android.widget.Toast; import org.json.JSONObject; import java.io.FileInputStream; import java.util.ArrayList; import java.util.List; import cn.scujcc.bug.bitcoinplatformandroid.R; import cn.scujcc.bug.bitcoinplatformandroid.database.DatabaseHelper; import cn.scujcc.bug.bitcoinplatformandroid.model.Order; import cn.scujcc.bug.bitcoinplatformandroid.model.RequestParameter; import cn.scujcc.bug.bitcoinplatformandroid.util.NetWork; import cn.scujcc.bug.bitcoinplatformandroid.util.SecurityConfig; /** * Created by lilujia on 16/3/27. * <p/> * */ public class OrderFragment extends BaseFragment implements SwipeRefreshLayout.OnRefreshListener { private static final String TAG = "ATOrder"; private static final String ORDER_INFO_URL = "http://115.28.242.27:8080/at/order"; private static final String CANCEL_URL = "http://115.28.242.27:8080/at/order/cancel"; private RecyclerView mRecyclerView; private RecyclerView.Adapter mAdapter; private RecyclerView.LayoutManager mLayoutManager; private SwipeRefreshLayout mSwipeRefreshWidget; private ProgressDialog mDialog; private TextView mNoneText; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); } @Nullable @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View view = inflater.inflate(R.layout.fragmnet_quotationinformation, container, false); mRecyclerView = (RecyclerView) view.findViewById(R.id.my_recycler_view); mNoneText = (TextView) view.findViewById(R.id.none_text); mRecyclerView.setLayoutManager(new LinearLayoutManager(getActivity())); mSwipeRefreshWidget = (SwipeRefreshLayout) view.findViewById(R.id.swipe_refresh_widget); mSwipeRefreshWidget.setOnRefreshListener(this); mSwipeRefreshWidget.setColorSchemeResources(R.color.colorPrimary, R.color.colorPrimaryDark); mSwipeRefreshWidget.setProgressViewOffset(false, 0, (int) TypedValue .applyDimension(TypedValue.COMPLEX_UNIT_DIP, 24, getResources().getDisplayMetrics())); setTitle(view, "?"); return view; } public void updateData() { mSwipeRefreshWidget.setRefreshing(true); LoadDataAsyncTask task = new LoadDataAsyncTask(); task.execute(); } @Override public void onRefresh() { updateData(); } @Override public void onResume() { super.onResume(); updateData(); } class LoadDataAsyncTask extends AsyncTask<Void, Void, List<Order>> { /** * ?,?,? */ @Override protected void onPreExecute() { super.onPreExecute(); } @Override protected List<Order> doInBackground(Void... params) { List<Order> list = new ArrayList<>(); FileInputStream fin = null; try { DatabaseHelper database = new DatabaseHelper(getActivity());//?Activity?this SQLiteDatabase db = null; db = database.getReadableDatabase(); //? Cursor c = db.query("orders", null, null, null, null, null, "time desc");// while (c.moveToNext()) { String orderID = c.getString(0); Order order = new Order(); order.setOrderID(Long.parseLong(orderID)); RequestParameter parameter1 = new RequestParameter("api_key", SecurityConfig.USD_ACCESS_KEY); RequestParameter parameter2 = new RequestParameter("secret_key", SecurityConfig.USD_SECRET_KEY); RequestParameter parameter3 = new RequestParameter("order_id", "" + order.getOrderID()); String json = NetWork.requestGetUrl(ORDER_INFO_URL, parameter1, parameter2, parameter3); Log.e(TAG, "JSON " + json); JSONObject obj = new JSONObject(json); try { obj = obj.getJSONArray("orders").getJSONObject(0); } catch (Exception e) { // list.add(order); continue; } order.setAmount(obj.getDouble("amount")); order.setAvgPrice(obj.getDouble("avg_price")); order.setCreateDate(obj.getLong("create_date")); order.setDealAmount(obj.getDouble("deal_amount")); order.setPrice(obj.getDouble("price")); order.setStatus(obj.getInt("status")); order.setType(obj.getString("type")); list.add(order); } } catch (Exception e) { e.printStackTrace(); sendServerError(); } return list; } /** * ??,? * * @param list */ @Override protected void onPostExecute(List<Order> list) { super.onPostExecute(list); mSwipeRefreshWidget.setRefreshing(false); if (null == list || list.size() == 0) { mNoneText.setVisibility(View.VISIBLE); } else { mAdapter = new OrderAdapter(list); mRecyclerView.setAdapter(mAdapter); mNoneText.setVisibility(View.INVISIBLE); } } } public class OrderAdapter extends RecyclerView.Adapter<OrderAdapter.ViewHolder> { private List<Order> mLists; public OrderAdapter() { mLists = null; } public OrderAdapter(List<Order> list) { mLists = list; } @Override public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.order_cardview, parent, false); return new ViewHolder(v); } @Override public void onBindViewHolder(ViewHolder holder, int position) { //? final Order order = mLists.get(position); holder.mView.setTag(position); holder.tvType.setText(order.getTypeString()); holder.tvTime.setText(order.getCreateDateToString()); if (order.getStatus() == 0) { //? holder.btnCancel.setVisibility(View.VISIBLE); holder.btnCancel.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { //????, //?? mDialog = new ProgressDialog(getActivity()); mDialog.setMessage("?,??"); mDialog.setCanceledOnTouchOutside(false); mDialog.setCancelable(false); mDialog.show(); CancelOrderTask task = new CancelOrderTask(); task.execute("" + order.getOrderID()); } }); } else { holder.btnCancel.setVisibility(View.INVISIBLE); } holder.tvStatus.setText(order.getStatusToString()); holder.tvPrice.setText("" + order.getPrice()); holder.tvDealPrice.setText("" + order.getAvgPrice()); holder.tvCount.setText("" + order.getAmount()); holder.tvDealCount.setText("" + order.getDealAmount()); } @Override public int getItemCount() { return mLists == null ? 0 : mLists.size(); } public class ViewHolder extends RecyclerView.ViewHolder { public View mView; public TextView tvType, tvTime, tvStatus, tvPrice, tvDealPrice, tvCount, tvDealCount; public Button btnCancel; public ViewHolder(View v) { super(v); mView = v; tvType = (TextView) mView.findViewById(R.id.order_type_textview); tvTime = (TextView) mView.findViewById(R.id.order_time_textview); tvStatus = (TextView) mView.findViewById(R.id.order_status_textview); btnCancel = (Button) mView.findViewById(R.id.order_cancel_button); tvPrice = (TextView) mView.findViewById(R.id.order_entrust_price_textview); tvDealPrice = (TextView) mView.findViewById(R.id.order_deal_price_textview); tvCount = (TextView) mView.findViewById(R.id.order_entrust_count_textview); tvDealCount = (TextView) mView.findViewById(R.id.order_deal_count_textview); } } } class CancelOrderTask extends AsyncTask<String, Void, Boolean> { @Override protected final Boolean doInBackground(String... args) { try { String orderID = args[0]; if (null == orderID) return null; RequestParameter parameter1 = new RequestParameter("api_key", SecurityConfig.USD_ACCESS_KEY); RequestParameter parameter2 = new RequestParameter("secret_key", SecurityConfig.USD_SECRET_KEY); RequestParameter parameter3 = new RequestParameter("order_id", orderID); List<RequestParameter> req = new ArrayList<>(); req.add(parameter1); req.add(parameter2); req.add(parameter3); String json = NetWork.requestPostUrl(CANCEL_URL, req); JSONObject obj = new JSONObject(json); Log.e("TAG", "json" + json); return obj.getBoolean("result"); } catch (Exception e) { e.printStackTrace(); Log.e(TAG, "Exception " + e.getLocalizedMessage()); sendServerError(); return false; } } @Override protected void onPostExecute(Boolean result) { super.onPostExecute(result); updateData(); if (mDialog != null) mDialog.cancel(); if (result) { Toast.makeText(getActivity(), "??", Toast.LENGTH_SHORT).show(); } else { Toast.makeText(getActivity(), "?", Toast.LENGTH_SHORT).show(); } } } }