Java tutorial
/* * Copyright (C) 2012 CONIT Co., Ltd. * * 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 jp.co.conit.sss.sp.ex1.fragment; import java.io.BufferedInputStream; import java.io.BufferedOutputStream; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.net.URL; import java.net.URLConnection; import java.security.MessageDigest; import java.security.NoSuchAlgorithmException; import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.Date; import java.util.List; import jp.co.conit.sss.sp.ex1.R; import jp.co.conit.sss.sp.ex1.activity.BookViewerActivity; import jp.co.conit.sss.sp.ex1.billing.PurchaseDatabase; import jp.co.conit.sss.sp.ex1.db.PurchasedBookDao; import jp.co.conit.sss.sp.ex1.entity.Book; import jp.co.conit.sss.sp.ex1.entity.SPResult; import jp.co.conit.sss.sp.ex1.entity.DownloadFile; import jp.co.conit.sss.sp.ex1.util.FileUtil; import jp.co.conit.sss.sp.ex1.util.HttpUtil; import jp.co.conit.sss.sp.ex1.util.SSSApiUtil; import android.app.Activity; import android.app.AlertDialog; import android.app.Dialog; import android.app.ProgressDialog; import android.content.Context; import android.content.DialogInterface; import android.content.DialogInterface.OnKeyListener; import android.content.Intent; import android.os.AsyncTask; import android.os.Bundle; import android.support.v4.app.DialogFragment; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentManager; import android.support.v4.app.FragmentTransaction; import android.view.KeyEvent; import android.view.LayoutInflater; import android.view.View; import android.view.View.OnClickListener; import android.view.ViewGroup; import android.widget.Button; import android.widget.TextView; /** * ??????Fragment?? * * @author conit */ public class BookPurchaseFragment extends Fragment { private static final int BUFFER_SIZE = 1024; private Book mBook; private FileInfoTask mFileInfoTask; private FileDownloadTask mFileDownloadTask; private BillingListener mBillingListener; private Button mPurchaceBtn; private String mBookPath; private static BookPurchaseFragment mSelf; /** * ??????? * * @author conit */ public interface BillingListener { /** * ??ID????? * * @param productId ID */ void onBuyProduct(String productId); } public static BookPurchaseFragment newInstance(Book book) { Bundle args = new Bundle(); args.putSerializable("book", book); BookPurchaseFragment fragment = new BookPurchaseFragment(); fragment.setArguments(args); return fragment; } @Override public void onAttach(Activity activity) { super.onAttach(activity); try { mBillingListener = (BillingListener) activity; } catch (ClassCastException e) { throw new ClassCastException(activity.toString() + " must implement BillingListener"); } mSelf = this; } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View v = inflater.inflate(R.layout.fragment_purchase, container, false); Bundle arguments = getArguments(); mBook = (Book) arguments.get("book"); String title = mBook.getTitle(); String outline = mBook.getOutline(); TextView detailTitle = (TextView) v.findViewById(R.id.detail_title); detailTitle.setText(title); TextView detailAuthor = (TextView) v.findViewById(R.id.detail_author); detailAuthor.setText(outline); mPurchaceBtn = (Button) v.findViewById(R.id.btn_purchace); mPurchaceBtn.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { if (hasBookFile()) { mBookPath = FileUtil.generateBookFilePath(getActivity(), mBook); intentToBookViewer(); } else { if (isDownloadable()) { downloadBookDataAsync(); } else { purchaseBook(); } } } }); if (hasBookFile()) { mPurchaceBtn.setText(getString(R.string.read)); } else { if (isDownloadable()) { mPurchaceBtn.setText(getString(R.string.download)); } else { if (mBook.isFree()) { mPurchaceBtn.setText(getString(R.string.free)); } else { mPurchaceBtn.setText(getString(R.string.pay)); } } } return v; } /** * ???????????<br> * ?????????????????<br> * * @return {@code true}?{@code false}?? */ private boolean isDownloadable() { boolean downloadable = false; PurchaseDatabase purchaseDatabase = new PurchaseDatabase(getActivity()); String receipt = purchaseDatabase.readReceipt(mBook.getProductId()); if (!mBook.isFree() && (receipt == null || receipt.equals(""))) { downloadable = false; } else { downloadable = true; } return downloadable; } /** * ????? */ private void purchaseBook() { mBillingListener.onBuyProduct(mBook.getProductId()); } /** * ??SD?????? * * @return {@code true}?{@code false}??? */ private boolean hasBookFile() { File bookDataFile = new File(FileUtil.generateBookFilePath(getActivity(), mBook)); return bookDataFile.exists() ? true : false; } /** * ??????? */ private void downloadBookDataAsync() { mFileInfoTask = new FileInfoTask(getActivity()); mFileInfoTask.execute(); } /** * ????<br> * ?????????????? * * @author conit */ private class FileInfoTask extends AsyncTask<Void, Void, SPResult<List<DownloadFile>>> { private Context mContext; private FileInfoTask(Context context) { mContext = context; } @Override protected void onPreExecute() { super.onPreExecute(); showProgressDialogFragment(ProgresssDialogFragment.STYLE_SPINNER); } @Override protected SPResult<List<DownloadFile>> doInBackground(Void... params) { if (!HttpUtil.isConnected(mContext)) { return SPResult.getDisconectErrInstance(mContext); } String receipt = null; // ???? if (!mBook.isFree()) { PurchaseDatabase pd = new PurchaseDatabase(getActivity()); receipt = pd.readReceipt(mBook.getProductId()); } // ? return SSSApiUtil.getFileList(getActivity().getApplicationContext(), mBook.getProductId(), receipt); } @Override protected void onPostExecute(SPResult<List<DownloadFile>> result) { removeDialogFragment(ProgresssDialogFragment.STYLE_SPINNER); if (isCancelled()) { return; } if (!result.isError()) { List<DownloadFile> downLoadFileList = result.getContent(); // ??????? DownloadFile downLoadFile = downLoadFileList.get(0); // ? mFileDownloadTask = new FileDownloadTask(downLoadFile); mFileDownloadTask.execute(); } else { showAlertDialogFragment(AlertDialogFragment.DOWNLOAD_FAIL); } } } /** * ???? */ private class FileDownloadTask extends AsyncTask<Void, Integer, Integer> { private DownloadFile mDownLoadFile; public FileDownloadTask(DownloadFile downLoadFile) { mDownLoadFile = downLoadFile; } @Override protected void onPreExecute() { showProgressDialogFragment(ProgresssDialogFragment.STYLE_HORIZONTAL); } @Override protected Integer doInBackground(Void... params) { try { int fileSize = 0; URL url = new URL(mDownLoadFile.getDowmloadUrl()); URLConnection conn = url.openConnection(); fileSize = conn.getContentLength(); DialogFragment df = (DialogFragment) getFragmentManager() .findFragmentByTag(Integer.toString(ProgresssDialogFragment.STYLE_HORIZONTAL)); ProgressDialog pd = (ProgressDialog) df.getDialog(); pd.setMax(fileSize); File downloadDir = new File(FileUtil.generateBookDirPath(getActivity())); if (!downloadDir.exists()) { downloadDir.mkdirs(); } File downloadFile = new File(downloadDir.getPath(), mDownLoadFile.getName()); mBookPath = downloadFile.getPath(); String hash = null; // ????? if (!mBook.isFree()) { hash = mDownLoadFile.getHash(); } BufferedInputStream in = new BufferedInputStream(conn.getInputStream()); BufferedOutputStream out = new BufferedOutputStream( new FileOutputStream(downloadFile.getPath(), false)); byte[] buf = new byte[BUFFER_SIZE]; int len; int downloadSize = 0; MessageDigest digest = MessageDigest.getInstance("SHA-1"); while ((len = in.read(buf)) != -1 && !isCancelled()) { digest.update(buf, 0, len); out.write(buf, 0, len); downloadSize += buf.length; publishProgress(downloadSize); } if (hash != null) { String downloadHash = hashByte2MD5(digest.digest()); if (!downloadHash.equals(hash)) { throw new HashInvalidException("not correct hash"); } } out.close(); in.close(); } catch (IOException e) { e.printStackTrace(); return 0; } catch (NoSuchAlgorithmException e) { e.printStackTrace(); return 0; } catch (HashInvalidException e) { e.printStackTrace(); return 0; } return 1; } private String hashByte2MD5(byte[] hash) { StringBuffer hexString = new StringBuffer(); for (int i = 0; i < hash.length; i++) { if ((0xff & hash[i]) < 0x10) { hexString.append("0" + Integer.toHexString((0xFF & hash[i]))); } else { hexString.append(Integer.toHexString(0xFF & hash[i])); } } return hexString.toString(); } @Override protected void onProgressUpdate(Integer... values) { DialogFragment df = (DialogFragment) getFragmentManager() .findFragmentByTag(Integer.toString(ProgresssDialogFragment.STYLE_HORIZONTAL)); ProgressDialog pd = (ProgressDialog) df.getDialog(); pd.incrementProgressBy(values[0]); } @Override protected void onPostExecute(Integer result) { removeDialogFragment(ProgresssDialogFragment.STYLE_HORIZONTAL); if (!isCancelled()) { if (result == 0) { // deleteBookFile(); showAlertDialogFragment(AlertDialogFragment.DOWNLOAD_FAIL); } else if (result == 1) { // ? // ?DB?insert Date time = Calendar.getInstance().getTime(); SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); mBook.setPurchasedDateStr(simpleDateFormat.format(time)); PurchasedBookDao dbAccessor = new PurchasedBookDao(getActivity()); // DB?? if (!dbAccessor.isExistBook(mBook)) { dbAccessor.addData(mBook); } mPurchaceBtn.setText(getString(R.string.read)); showAlertDialogFragment(AlertDialogFragment.INTENT_VIEWER); } } else { // ? deleteBookFile(); showAlertDialogFragment(AlertDialogFragment.DOWNLOAD_CANCEL); } } } /** * ??? * * @param type */ private void showAlertDialogFragment(int type) { FragmentManager fm = getFragmentManager(); AlertDialogFragment adf = AlertDialogFragment.newInstance(type); adf.show(fm, Integer.toString(type)); } /** * ??? * * @param type */ private void showProgressDialogFragment(int type) { FragmentManager fm = getFragmentManager(); ProgresssDialogFragment pdf = ProgresssDialogFragment.newInstance(type); pdf.show(fm, Integer.toString(type)); } /** * ??????? */ private void intentToBookViewer() { Intent intent = new Intent(getActivity(), BookViewerActivity.class); intent.putExtra("book_path", mBookPath); startActivity(intent); } /** * ????<br> * ????????? */ private void deleteBookFile() { File file = new File(mBookPath); FileUtil.deleteFile(file); } /** * hash??? */ private class HashInvalidException extends Exception { private static final long serialVersionUID = 3957048623463577915L; public HashInvalidException(String msg) { super(msg); } } /** * ??????????? * * @author conit */ private static class AlertDialogFragment extends DialogFragment { public static final int INTENT_VIEWER = 1; public static final int DOWNLOAD_FAIL = 2; public static final int DOWNLOAD_CANCEL = 3; public static AlertDialogFragment newInstance(int type) { AlertDialogFragment frag = new AlertDialogFragment(); Bundle args = new Bundle(); args.putInt("dialog_type", type); frag.setArguments(args); return frag; } @Override public Dialog onCreateDialog(Bundle savedInstanceState) { Bundle arg = getArguments(); int type = arg.getInt("dialog_type"); AlertDialog.Builder dlg = new AlertDialog.Builder(getActivity()); switch (type) { case INTENT_VIEWER: dlg.setTitle(getActivity().getString(R.string.dialog_title_download_complete)); dlg.setMessage(getActivity().getString(R.string.dialog_download_complete)); dlg.setCancelable(false); dlg.setPositiveButton(getString(R.string.dialog_btn_ok), new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int whichButton) { mSelf.intentToBookViewer(); } }); break; case DOWNLOAD_FAIL: dlg.setMessage(getActivity().getString(R.string.dialog_error_download)); dlg.setCancelable(false); dlg.setPositiveButton(getString(R.string.dialog_btn_ok), new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int whichButton) { mSelf.removeDialogFragment(DOWNLOAD_FAIL); } }); dlg.show(); break; case DOWNLOAD_CANCEL: dlg.setMessage(getActivity().getString(R.string.dialog_cancel_download)); dlg.setCancelable(false); dlg.setPositiveButton(getString(R.string.dialog_btn_ok), new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int whichButton) { mSelf.removeDialogFragment(DOWNLOAD_CANCEL); } }); break; default: break; } return dlg.create(); } } /** * ???????? * * @author conit */ private static class ProgresssDialogFragment extends DialogFragment { public static final int STYLE_SPINNER = 10; public static final int STYLE_HORIZONTAL = 20; public static ProgresssDialogFragment newInstance(int type) { ProgresssDialogFragment frag = new ProgresssDialogFragment(); Bundle args = new Bundle(); args.putInt("dialog_type", type); frag.setArguments(args); return frag; } @Override public Dialog onCreateDialog(Bundle savedInstanceState) { ProgressDialog progressDialog = new ProgressDialog(getActivity()); Bundle arg = getArguments(); int type = arg.getInt("dialog_type"); switch (type) { case STYLE_SPINNER: progressDialog.setMessage(getActivity().getString(R.string.dialog_getting_book_info)); progressDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER); progressDialog.setCancelable(false); progressDialog.setOnKeyListener(new OnKeyListener() { @Override public boolean onKey(DialogInterface dialog, int keyCode, KeyEvent event) { if (KeyEvent.KEYCODE_BACK == keyCode) { mSelf.cancelDownloadFileInfoTask(); mSelf.removeDialogFragment(STYLE_SPINNER); return true; } return false; } }); break; case STYLE_HORIZONTAL: progressDialog.setMessage(getActivity().getString(R.string.dialog_getting_book)); progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL); progressDialog.setCancelable(false); progressDialog.setMax(1); progressDialog.setOnKeyListener(new OnKeyListener() { @Override public boolean onKey(DialogInterface dialog, int keyCode, KeyEvent event) { if (KeyEvent.KEYCODE_BACK == keyCode) { return true; } return false; } }); break; default: break; } return progressDialog; } } /** * ??????????? */ private void cancelDownloadFileInfoTask() { if (mFileInfoTask != null && !mFileInfoTask.isCancelled()) { mFileInfoTask.cancel(true); } } /** * ?????????? */ private void cancelDownloadFileTask() { if (mFileDownloadTask != null && !mFileDownloadTask.isCancelled()) { mFileDownloadTask.cancel(true); } } /** * ????????? * * @param type */ private void removeDialogFragment(int type) { FragmentTransaction ft = getFragmentManager().beginTransaction(); DialogFragment prev = (DialogFragment) getFragmentManager().findFragmentByTag(Integer.toString(type)); if (prev != null) { prev.dismiss(); ft.remove(prev); ft.commit(); } } @Override public void onDestroy() { super.onDestroy(); cancelDownloadFileInfoTask(); cancelDownloadFileTask(); } /** * ??????? * * @param enable */ public void setPurchaceBtnEnable(boolean enable) { mPurchaceBtn.setEnabled(enable); } /** * ?????? * * @param title ? */ public void setPurchaceBtnTitle(String title) { mPurchaceBtn.setText(title); } }