完美答题系统

/** * Process - Acitivity of AndroidExam * Copyright (C) 2011 CFuture . Chen Yong Jia * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. * */ package com.lurencun.androidexam.ui; import java.io.File; import java.util.List; import android.app.Activity; import android.app.AlertDialog; import android.content.ContextWrapper; import android.content.DialogInterface; import android.content.Intent; import android.os.Bundle; import android.os.SystemClock; import android.os.Vibrator; import android.view.KeyEvent; import android.view.View; import android.view.View.OnClickListener; import android.widget.CheckBox; import android.widget.Chronometer; import android.widget.ImageButton; import android.widget.LinearLayout; import android.widget.ProgressBar; import android.widget.RadioButton; import android.widget.RadioGroup; import android.widget.TextView; import android.widget.Toast; import com.lurencun.androidexam.R; import com.lurencun.androidexam.db.DBAccess; import com.lurencun.androidexam.entity.AnswerEntity; import com.lurencun.androidexam.entity.ProfileEntity; import com.lurencun.androidexam.entity.SubjectEntity; import com.lurencun.androidexam.util.FilpperCallback; import com.lurencun.androidexam.util.MyViewFilpper; import com.lurencun.androidexam.util.CommonSetting; import com.lurencun.androidexam.xml.ParseException; import com.lurencun.androidexam.xml.XmlParser; public class Process extends Activity implements FilpperCallback,OnClickListener{ /** * 统计用到的成员变量 */ private long baseLine = 0L; private long elapsedTime = 0L; private int score = 0; private String fileId ; private int progressValue = 1; private int totalSubjectCount = 0; private String currentFileName; private int hadAnsweredCount = 0; private int currentSubjectLocation = 0; /** * 因跨成员方法使用数据而设置的组件引用 */ private ProgressBar progressBar = null; private Chronometer chronometer = null; private MyViewFilpper subjectFilpper = null; private List<SubjectEntity> subjects = null; private List<AnswerEntity> currentAnswerGroup = null; /** * 题目状态标识 */ private boolean isNewSubject = false; private boolean hadChosenAnswer = false; /** * 震动效果 */ private Vibrator vibrator; private long[] pattern = { 10,50}; private int iconOffset = 40; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.process); currentFileName = getIntent().getStringExtra(CommonSetting.FileNameTag); vibrator = (Vibrator)getSystemService(ContextWrapper.VIBRATOR_SERVICE); fillHeader(); fillSubjects(); } /** * 填充考卷信息头 * @param path */ private void fillHeader(){ final TextView titleTextView = (TextView)findViewById(R.id.textpaperTitle); final TextView totalTimeTextView = (TextView)findViewById(R.id.testpaperInfoTotalTime); chronometer = (Chronometer)findViewById(R.id.testpaperInfoElapsedTime); final TextView totalScoreTextView = (TextView)findViewById(R.id.testpaperInfoTotalScore); progressBar = (ProgressBar)findViewById(R.id.testProgressBar); final ImageButton answerButton = (ImageButton)findViewById(R.id.submitButton); try { ProfileEntity pe = XmlParser.getProfile(new File(CommonSetting.SDCardDiretory + currentFileName)); titleTextView.setText(String.format(getResources().getString(R.string.titleTag), pe.getTitle())); totalTimeTextView.setText(getResources().getString(R.string.infoTotalTimeTag)+pe.getTotalTime()); totalScoreTextView.setText(getResources().getString(R.string.infoTotalScoreTag)+pe.getTotalScore()); chronometer.setFormat(getResources().getString(R.string.infoElapsedTimeTag)+"%s"); baseLine = SystemClock.elapsedRealtime(); progressBar.setProgress(30); chronometer.setBase(baseLine); chronometer.start(); fileId = String.valueOf(pe.getFileId()); } catch (ParseException e) { Toast.makeText(this,getResources().getString(R.string.parseError),Toast.LENGTH_SHORT).show(); } answerButton.setOnClickListener(this); } /** * 填充题目 * <p> * 目前实现的是，把题目全部从XML文件中读出，保存到subjects引用中。 * 题目动态生成，显示样式在R.layout.processitem中设置，由MyViewFilpper显示。 * </p> */ private void fillSubjects(){ subjectFilpper = (MyViewFilpper)findViewById(R.id.subjectViewFilpper); try { subjects = XmlParser.getSubjects(new File(CommonSetting.SDCardDiretory + currentFileName)); } catch (ParseException e) { Toast.makeText(this,getResources().getString(R.string.parseError),Toast.LENGTH_SHORT).show(); } for(SubjectEntity se : subjects){ ++totalSubjectCount; LinearLayout item = new LinearLayout(Process.this); item.addView(View.inflate(Process.this, R.layout.processitem, null)); final TextView sContentView = (TextView)item.findViewById(R.id.subjectContent); final TextView sIndexView = (TextView)item.findViewById(R.id.subjectIndex); final String sContent = se.getContent(); int fontsize = sContent.length() > getResources().getInteger(R.integer.subjectContentMaxLength) ? getResources().getInteger(R.integer.subjectContentSmallFont) : getResources().getInteger(R.integer.subjectContentNormalFont); sContentView.setTextSize(fontsize); sContentView.setText(sContent); sContentView.setWidth(480); sIndexView.setText(String.format(getResources().getString(R.string.subjectIndex), se.getIndex()+1)); LinearLayout answerLayout=(LinearLayout)item.findViewById(R.id.answerLayout); createAnswerView(answerLayout,se.getType(),se.getAnswers()); subjectFilpper.addView(item); } updateProgress(1); subjectFilpper.setTotalItemCounts(totalSubjectCount); subjectFilpper.setCallback(this); DBAccess.createProfile(this,fileId, totalSubjectCount); ImageButton leftButton = (ImageButton)findViewById(R.id.leftButton); leftButton.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { subjectFilpper.showPrevious(); } }); ImageButton rightButton = (ImageButton)findViewById(R.id.rightButton); rightButton.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { subjectFilpper.showNext(); } }); } /** * 根据题目的类型，创建不同的答案。 * @param ll 答案区域的LinearLayout * @param type 答案类型 */ private void createAnswerView(LinearLayout ll,int type,List<AnswerEntity> answers){ switch(type){ case SubjectEntity.SINGLE: createRadioGroup(ll,answers); break; case SubjectEntity.MULTLCHECK: createMutilChecked(ll,answers); break; case SubjectEntity.TRUEORFALSE: createTrueOrFalse(ll,answers); break; } } /** * 当题目改变时，此方法被调用 * <p> * 在此方法中，修改当前题目的答案选择情况。 * 标识是否为还没回答的题目。 * </p> */ @Override public void subjectChange(int location) { currentSubjectLocation = location; hadChosenAnswer = false; isNewSubject = true; currentAnswerGroup = subjects.get(currentSubjectLocation).getAnswers(); for(AnswerEntity ao : currentAnswerGroup){ if(ao.isSelected()){ hadChosenAnswer = true; isNewSubject