Java tutorial
/* * Apache License * Version 2.0, January 2004 * http://www.apache.org/licenses/ * * TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION * * 1. Definitions. * * "License" shall mean the terms and conditions for use, reproduction, * and distribution as defined by Sections 1 through 9 of this document. * * "Licensor" shall mean the copyright owner or entity authorized by * the copyright owner that is granting the License. * * "Legal Entity" shall mean the union of the acting entity and all * other entities that control, are controlled by, or are under common * control with that entity. For the purposes of this definition, * "control" means (i) the power, direct or indirect, to cause the * direction or management of such entity, whether by contract or * otherwise, or (ii) ownership of fifty percent (50%) or more of the * outstanding shares, or (iii) beneficial ownership of such entity. * * "You" (or "Your") shall mean an individual or Legal Entity * exercising permissions granted by this License. * * "Source" form shall mean the preferred form for making modifications, * including but not limited to software source code, documentation * source, and configuration files. * * "Object" form shall mean any form resulting from mechanical * transformation or translation of a Source form, including but * not limited to compiled object code, generated documentation, * and conversions to other media types. * * "Work" shall mean the work of authorship, whether in Source or * Object form, made available under the License, as indicated by a * copyright notice that is included in or attached to the work * (an example is provided in the Appendix below). * * "Derivative Works" shall mean any work, whether in Source or Object * form, that is based on (or derived from) the Work and for which the * editorial revisions, annotations, elaborations, or other modifications * represent, as a whole, an original work of authorship. For the purposes * of this License, Derivative Works shall not include works that remain * separable from, or merely link (or bind by name) to the interfaces of, * the Work and Derivative Works thereof. * * "Contribution" shall mean any work of authorship, including * the original version of the Work and any modifications or additions * to that Work or Derivative Works thereof, that is intentionally * submitted to Licensor for inclusion in the Work by the copyright owner * or by an individual or Legal Entity authorized to submit on behalf of * the copyright owner. For the purposes of this definition, "submitted" * means any form of electronic, verbal, or written communication sent * to the Licensor or its representatives, including but not limited to * communication on electronic mailing lists, source code control systems, * and issue tracking systems that are managed by, or on behalf of, the * Licensor for the purpose of discussing and improving the Work, but * excluding communication that is conspicuously marked or otherwise * designated in writing by the copyright owner as "Not a Contribution." * * "Contributor" shall mean Licensor and any individual or Legal Entity * on behalf of whom a Contribution has been received by Licensor and * subsequently incorporated within the Work. * * 2. Grant of Copyright License. Subject to the terms and conditions of * this License, each Contributor hereby grants to You a perpetual, * worldwide, non-exclusive, no-charge, royalty-free, irrevocable * copyright license to reproduce, prepare Derivative Works of, * publicly display, publicly perform, sublicense, and distribute the * Work and such Derivative Works in Source or Object form. * * 3. Grant of Patent License. Subject to the terms and conditions of * this License, each Contributor hereby grants to You a perpetual, * worldwide, non-exclusive, no-charge, royalty-free, irrevocable * (except as stated in this section) patent license to make, have made, * use, offer to sell, sell, import, and otherwise transfer the Work, * where such license applies only to those patent claims licensable * by such Contributor that are necessarily infringed by their * Contribution(s) alone or by combination of their Contribution(s) * with the Work to which such Contribution(s) was submitted. If You * institute patent litigation against any entity (including a * cross-claim or counterclaim in a lawsuit) alleging that the Work * or a Contribution incorporated within the Work constitutes direct * or contributory patent infringement, then any patent licenses * granted to You under this License for that Work shall terminate * as of the date such litigation is filed. * * 4. Redistribution. You may reproduce and distribute copies of the * Work or Derivative Works thereof in any medium, with or without * modifications, and in Source or Object form, provided that You * meet the following conditions: * * (a) You must give any other recipients of the Work or * Derivative Works a copy of this License; and * * (b) You must cause any modified files to carry prominent notices * stating that You changed the files; and * * (c) You must retain, in the Source form of any Derivative Works * that You distribute, all copyright, patent, trademark, and * attribution notices from the Source form of the Work, * excluding those notices that do not pertain to any part of * the Derivative Works; and * * (d) If the Work includes a "NOTICE" text file as part of its * distribution, then any Derivative Works that You distribute must * include a readable copy of the attribution notices contained * within such NOTICE file, excluding those notices that do not * pertain to any part of the Derivative Works, in at least one * of the following places: within a NOTICE text file distributed * as part of the Derivative Works; within the Source form or * documentation, if provided along with the Derivative Works; or, * within a display generated by the Derivative Works, if and * wherever such third-party notices normally appear. The contents * of the NOTICE file are for informational purposes only and * do not modify the License. You may add Your own attribution * notices within Derivative Works that You distribute, alongside * or as an addendum to the NOTICE text from the Work, provided * that such additional attribution notices cannot be construed * as modifying the License. * * You may add Your own copyright statement to Your modifications and * may provide additional or different license terms and conditions * for use, reproduction, or distribution of Your modifications, or * for any such Derivative Works as a whole, provided Your use, * reproduction, and distribution of the Work otherwise complies with * the conditions stated in this License. * * 5. Submission of Contributions. Unless You explicitly state otherwise, * any Contribution intentionally submitted for inclusion in the Work * by You to the Licensor shall be under the terms and conditions of * this License, without any additional terms or conditions. * Notwithstanding the above, nothing herein shall supersede or modify * the terms of any separate license agreement you may have executed * with Licensor regarding such Contributions. * * 6. Trademarks. This License does not grant permission to use the trade * names, trademarks, service marks, or product names of the Licensor, * except as required for reasonable and customary use in describing the * origin of the Work and reproducing the content of the NOTICE file. * * 7. Disclaimer of Warranty. Unless required by applicable law or * agreed to in writing, Licensor provides the Work (and each * Contributor provides its Contributions) on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or * implied, including, without limitation, any warranties or conditions * of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A * PARTICULAR PURPOSE. You are solely responsible for determining the * appropriateness of using or redistributing the Work and assume any * risks associated with Your exercise of permissions under this License. * * 8. Limitation of Liability. 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.Activity; import android.app.ProgressDialog; import android.content.ContentValues; import android.content.Context; import android.database.sqlite.SQLiteDatabase; import android.os.AsyncTask; import android.os.Bundle; import android.support.annotation.Nullable; import android.support.design.widget.TextInputEditText; import android.text.Editable; import android.text.TextWatcher; import android.util.Log; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.AdapterView; import android.widget.Button; import android.widget.Spinner; import android.widget.TextView; import android.widget.Toast; import org.json.JSONException; import org.json.JSONObject; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.io.ObjectInputStream; import java.io.ObjectOutputStream; import java.util.ArrayList; import java.util.Date; import java.util.List; import java.util.regex.Pattern; import cn.scujcc.bug.bitcoinplatformandroid.R; import cn.scujcc.bug.bitcoinplatformandroid.database.DatabaseHelper; import cn.scujcc.bug.bitcoinplatformandroid.model.Balance; import cn.scujcc.bug.bitcoinplatformandroid.model.RequestParameter; import cn.scujcc.bug.bitcoinplatformandroid.util.Config; import cn.scujcc.bug.bitcoinplatformandroid.util.NetWork; import cn.scujcc.bug.bitcoinplatformandroid.util.SecurityConfig; /** * ? */ public class BuyAndSellFragment extends BaseFragment { private static final String TAG = "ATBuyAndsellFragment"; public static final String ARGS_IS_Sell = "ActualTransactionBuyAndsellFragment_IS_Sell"; private static final String BALANCE_INFO_URL = "http://115.28.242.27:8080/balance"; private static final String TRADE_URL = "http://115.28.242.27:8080/at/trade"; private Button mButton; private Spinner mSpinner; private ProgressDialog mDialog; private TextView mCNYTextView, mBTCTextView, mFreezedCNYTextView, mFreezedBTCTextView; private TextInputEditText mCountEdit, mUnivalentEdit; private boolean isSell; private boolean isLimit; private Activity mActivity; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); savedInstanceState = getArguments(); if (savedInstanceState != null) { isSell = savedInstanceState.getBoolean(ARGS_IS_Sell); } } @Override public void onResume() { super.onResume(); } @Override public void onAttach(Activity activity) { super.onAttach(activity); mActivity = activity; } @Nullable @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View view = inflater.inflate(R.layout.fragment_actualtransactionbuyandsell, container, false); mButton = (Button) view.findViewById(R.id.fragment_ats_buy_button); mSpinner = (Spinner) view.findViewById(R.id.fragment_actualtransactionbuy_mode); mCountEdit = (TextInputEditText) view.findViewById(R.id.fragment_actualtransactionbuy_count); mUnivalentEdit = (TextInputEditText) view.findViewById(R.id.fragment_actualtransactionbuy_univalent); mCNYTextView = (TextView) view.findViewById(R.id.fragment_ats_buy_account_cnycount); mBTCTextView = (TextView) view.findViewById(R.id.fragment_ats_buy_account_btccount); mFreezedCNYTextView = (TextView) view.findViewById(R.id.fragment_ats_buy_account_freezed_cnycount); mFreezedBTCTextView = (TextView) view.findViewById(R.id.fragment_ats_buy_account_freezed_btccount); //? if (isSell) { //? mButton.setText(R.string.fragment_actualtransactionbuy_sell); } else { // mButton.setText(R.string.fragment_actualtransactionbuy_buy); } mUnivalentEdit.addTextChangedListener(new TextWatcher() { @Override public void beforeTextChanged(CharSequence s, int start, int count, int after) { } @Override public void onTextChanged(CharSequence s, int start, int before, int count) { } @Override public void afterTextChanged(Editable s) { Log.e(TAG, "afterTextChanged" + s); if (s.toString().trim().length() == 0 || s.toString().equals("?")) return; if (!isDecimal(s.toString())) { mUnivalentEdit.setError("???"); } else { double d = Double.parseDouble(s.toString()); if (d < 0.01) { mUnivalentEdit.setError("?0.01"); } } } }); mCountEdit.addTextChangedListener(new TextWatcher() { @Override public void beforeTextChanged(CharSequence s, int start, int count, int after) { } @Override public void onTextChanged(CharSequence s, int start, int before, int count) { } @Override public void afterTextChanged(Editable s) { if (s.toString().trim().length() == 0 || s.toString().equals("?")) return; if (!isDecimal(s.toString())) { mCountEdit.setError("???"); } else { double d = Double.parseDouble(s.toString()); if (d < 0.01) { mCountEdit.setError("?0.01"); } } } }); isLimit = true; mSpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() { @Override public void onItemSelected(AdapterView<?> parent, View view, int position, long id) { if (position == 0) { //? isLimit = true; if (isSell) { mUnivalentEdit.setText(""); mUnivalentEdit.setEnabled(true); } else { mCountEdit.setText(""); mCountEdit.setEnabled(true); } } else if (position == 1) { //? isLimit = false; if (isSell) { mUnivalentEdit.setText("?"); mUnivalentEdit.setEnabled(false); } else { mCountEdit.setText("?"); mCountEdit.setEnabled(false); } } } @Override public void onNothingSelected(AdapterView<?> parent) { } }); mButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { //??? double count = 0; double univalent = 0; /* * 3?, * 1?? * 2,?? * 3?,?? */ Log.e(TAG, "isLimit" + isLimit + "isSell" + isSell); try { if (isLimit) { count = Double.parseDouble(mCountEdit.getText().toString()); univalent = Double.parseDouble(mUnivalentEdit.getText().toString()); if (count < 0.01 || univalent < 0.01) { Toast.makeText(getActivity(), "?0.01", Toast.LENGTH_SHORT).show(); return; } } else if (!isSell) { univalent = Double.parseDouble(mUnivalentEdit.getText().toString()); if (univalent < 0.01) { Toast.makeText(getActivity(), "?0.01", Toast.LENGTH_SHORT).show(); return; } } else if (isSell) { count = Double.parseDouble(mCountEdit.getText().toString()); if (count < 0.01) { Toast.makeText(getActivity(), "?0.01", Toast.LENGTH_SHORT).show(); return; } } } catch (Exception e) { Toast.makeText(getActivity(), "", Toast.LENGTH_SHORT).show(); return; } //?? mDialog = new ProgressDialog(getActivity()); mDialog.setMessage("?,??"); mDialog.setCanceledOnTouchOutside(false); mDialog.setCancelable(false); mDialog.show(); //URL? String type = ""; String price = univalent + ""; String amount = count + ""; if (isSell && isLimit) { //? ? type = "sell"; } else if (isSell && !isLimit) { //? type = "sell_market"; price = ""; } else if (!isSell && isLimit) { // ? type = "buy"; } else if (!isSell && !isLimit) { // type = "buy_market"; amount = ""; } RequestParameter parameter1 = new RequestParameter("api_key", SecurityConfig.USD_ACCESS_KEY); RequestParameter parameter2 = new RequestParameter("secret_key", SecurityConfig.USD_SECRET_KEY); RequestParameter parameter3 = new RequestParameter("type", type); RequestParameter parameter4 = new RequestParameter("price", price); RequestParameter parameter5 = new RequestParameter("amount", amount); List<RequestParameter> list = new ArrayList<>(); list.add(parameter1); list.add(parameter2); list.add(parameter3); list.add(parameter4); list.add(parameter5); // BuyOrSellAsyncTask task = new BuyOrSellAsyncTask(); task.execute(list); } }); //?? updateBalance(); //? return view; } public boolean isDecimal(String str) { return Pattern.compile("^[0-9]+(.[0-9]{1,2})?$").matcher(str).matches(); } public void updateBalance() { BalanceAsyncTask balanceAsyncTask = new BalanceAsyncTask(); balanceAsyncTask.execute(); Log.e(TAG, "updateBalance"); } public void updateBalanceUI(final Balance balance) { if (getActivity() != null) { getActivity().runOnUiThread(new Runnable() { @Override public void run() { if (balance != null) { mBTCTextView.setText(Balance.getDoubleString(balance.getFreeBTC())); mCNYTextView.setText(Balance.getDoubleString(balance.getFreeUSD())); mFreezedCNYTextView.setText(Balance.getDoubleString(balance.getFreezedUSD())); mFreezedBTCTextView.setText(Balance.getDoubleString(balance.getFreezedBTC())); } } }); } else if (mActivity != null) { mActivity.runOnUiThread(new Runnable() { @Override public void run() { if (balance != null) { mBTCTextView.setText(Balance.getDoubleString(balance.getFreeBTC())); mCNYTextView.setText(Balance.getDoubleString(balance.getFreeUSD())); mFreezedCNYTextView.setText(Balance.getDoubleString(balance.getFreezedUSD())); mFreezedBTCTextView.setText(Balance.getDoubleString(balance.getFreezedBTC())); } } }); } else { Log.e(TAG, "getActivity ==null"); } } class BalanceAsyncTask extends AsyncTask<Void, Void, Balance> { @Override protected Balance doInBackground(Void... params) { Balance balance = new Balance(); try { RequestParameter parameter1 = new RequestParameter("api_key", SecurityConfig.USD_ACCESS_KEY); RequestParameter parameter2 = new RequestParameter("secret_key", SecurityConfig.USD_SECRET_KEY); String json = NetWork.requestGetUrl(BALANCE_INFO_URL, parameter1, parameter2); JSONObject obj = new JSONObject(json); obj = obj.getJSONObject("info").getJSONObject("funds"); JSONObject freeObj = obj.getJSONObject("free"); JSONObject freezedObj = obj.getJSONObject("freezed"); balance.setFreeBTC(freeObj.getDouble("btc")); balance.setFreeUSD(freeObj.getDouble("usd")); balance.setFreezedBTC(freezedObj.getDouble("btc")); balance.setFreezedUSD(freezedObj.getDouble("usd")); return balance; } catch (Exception e) { e.printStackTrace(); Log.e(TAG, "Exception " + e.getLocalizedMessage()); sendServerError(); return null; } } @Override protected void onPostExecute(Balance balance) { super.onPostExecute(balance); updateBalanceUI(balance); } } /** * ?? * * @param orderID */ public void saveOrderID(String orderID) { DatabaseHelper database = new DatabaseHelper(getActivity());//?Activity?this SQLiteDatabase db = null; db = database.getWritableDatabase(); ContentValues cv = new ContentValues(); cv.put("orderid", orderID); cv.put("time", new Date().getTime()); db.insert("orders", null, cv);//?? } public List<String> readOrdersFromCache() { try { FileInputStream fin = getActivity().openFileInput("orders"); ObjectInputStream in = new ObjectInputStream(fin); List<String> list = (List<String>) in.readObject(); in.close(); return list; } catch (Exception e) { return new ArrayList<String>(); } } public void writeOrderToCache(List<String> list) { try { FileOutputStream fot = getActivity().openFileOutput("orders", Context.MODE_PRIVATE); ObjectOutputStream out = new ObjectOutputStream(fot); out.writeObject(list); out.close(); } catch (IOException e) { e.printStackTrace(); } } class BuyOrSellAsyncTask extends AsyncTask<List<RequestParameter>, Void, String> { @Override protected final String doInBackground(List<RequestParameter>... args) { try { List<RequestParameter> list = args[0]; if (null == list) return null; return NetWork.requestPostUrl(TRADE_URL, list); } catch (Exception e) { e.printStackTrace(); Log.e(TAG, "Exception " + e.getLocalizedMessage()); sendServerError(); return null; } } @Override protected void onPostExecute(String json) { super.onPostExecute(json); if (mDialog != null) mDialog.cancel(); try { JSONObject jsonObject = new JSONObject(json); Log.e(TAG, "json" + json); if (jsonObject.getBoolean("result")) { Toast.makeText(getActivity(), "????", Toast.LENGTH_SHORT) .show(); saveOrderID(jsonObject.getString("order_id")); } else { String msg = Config.getErrorMsg(jsonObject.getInt("error_code")); if (msg == null) { Toast.makeText(getActivity(), "?", Toast.LENGTH_SHORT).show(); } else { Toast.makeText(getActivity(), "?" + msg, Toast.LENGTH_SHORT).show(); } } } catch (JSONException e) { e.printStackTrace(); } } } }