IO + TTS : 給英聽練習使用
主程式：
//設計英語英聽口說練習
public class IO_TTS_EnglishSpeakingActivity extends Activity implements OnInitListener{
/** Called when the activity is first created. */
private final String SDCARD_PATH = Environment.getExternalStorageDirectory().getAbsolutePath();
private final String FILE_PATH = "/fileio";
// private final String ENCODING = "UTF-8";
private File [] filesArray;
private File mDataPath;
private FileInputStream fis = null;
TextView tv;
ListView lv;
private String aFileName;
String [] strings;
private TextToSpeech mTTS;
private Button answerBtn;
private Button goBackBtn;
String result = "";
private static int NO_OF_QUESTIONS = 5;
private String [] questionsStr = new String [NO_OF_QUESTIONS];
private int flag; //判斷是否還留在原來的試卷裡
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
tv= (TextView) findViewById(R.id.textView01);
// tv.setMovementMethod(ScrollingMovementMethod.getInstance());
mDataPath = new File (SDCARD_PATH + FILE_PATH);
filesArray = mDataPath.listFiles();
listFiles();//列出所有的檔案
mTTS = new TextToSpeech(getApplicationContext(), this);//初始化
answerBtn = (Button) findViewById(R.id.button2);
answerBtn.setOnClickListener(answerListener);
goBackBtn = (Button) findViewById(R.id.goBackButton);
goBackBtn.setOnClickListener (goBackListener);
flag = 1;
}// end of onCreate
//列出所有英聽的檔案，顯示在ListView上
private void listFiles() {
String fileNames = ""; // to receive every single file name
for (int i = 0; i < filesArray.length; i++) {
if (filesArray[i].isFile()) { //get rid of directories
String tempStr = ""; //會多出入徑的字串
tempStr = filesArray[i].toString();
String strSub = ""; //to subtract the uneccessary part: /mnt/sdcard/fileio/ (19 個字元)
strSub = tempStr.substring(19, tempStr.length()).toString();
fileNames += strSub + "--";
}
}
//Handle to subtraction of the final "--" in fileNames string
String result = "";
result = fileNames.substring(0, fileNames.length()-2);
strings = TextUtils.split(result, "--");
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, strings);
lv = (ListView) findViewById(R.id.listView1);
lv.setAdapter(adapter);
lv.setOnItemClickListener(listener);
}// end of listFiles ();
// 看答案的按鈕
private OnClickListener answerListener = new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
if (questionsStr[0] == null) {
Toast.makeText(Cq_IO01Activity.this, "請選擇試卷！",
Toast.LENGTH_SHORT).show();
tv.setMarqueeRepeatLimit(-1);
} else if (flag == 1){
ArrayAdapter<String> adapter = new ArrayAdapter<String>(
Cq_IO01Activity.this,
android.R.layout.simple_list_item_1, questionsStr);
lv.setAdapter(adapter);
answerBtn.setText("不看題目");
answerBtn.setTextColor(Color.MAGENTA);
flag = 0;
} else if (flag == 0) {
listFiles();
answerBtn.setText("觀看題目");
answerBtn.setTextColor(Color.BLACK);
flag = 1;
}
}
};
//按下按鈕回到原先列出全部英聽檔案的畫面
private OnClickListener goBackListener = new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
if (mTTS != null) {
mTTS.stop();
}
listFiles();
tv.setText("請選擇下列試題卷練習英聽口說：");
tv.setTextColor(Color.RED);
tv.setMarqueeRepeatLimit(-1);
answerBtn.setText("觀看題目");
answerBtn.setTextColor(Color.BLACK);
}
};
//選擇要唸出的檔案; 將內容的五個問題分別間隔唸出
private OnItemClickListener listener = new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
// TODO Auto-generated method stub
aFileName = strings[position].toString();
tv.setText("正在播放 " + aFileName + " 練習，一共五題，每題播放兩次：");
tv.setTextColor(Color.GREEN);
tv.setMarqueeRepeatLimit(-1);
readSingleLine(aFileName); //讀出每個問題
}
};// end of listener
private void readSingleLine (String aFileName) {
try {
String mFileName = mDataPath + "/" + aFileName;
File fileContent = new File (mFileName);
fis = new FileInputStream(fileContent);
DataInputStream dis = new DataInputStream(fis);
for (int i = 0; i< NO_OF_QUESTIONS; i++) {
String tempStr = "";
tempStr = dis.readLine() + "\n";
questionsStr[i] = tempStr;
//讀出所選檔案的內容
mTTS.speak(tempStr, TextToSpeech.QUEUE_ADD, null); //用QUEUE_ADD可以再接其他的字串；queue＿flush將無法做到 //唸第一次
mTTS.playSilence(2000, TextToSpeech.QUEUE_ADD, null); //停頓兩秒
mTTS.speak(tempStr, TextToSpeech.QUEUE_ADD, null); //唸第二次
mTTS.playSilence(2000, TextToSpeech.QUEUE_ADD, null); //停頓兩秒
mTTS.speak("Please answer now.", TextToSpeech.QUEUE_ADD, null); //請使用者回答
mTTS.playSilence(8000, TextToSpeech.QUEUE_ADD, null); //給予八秒的時間回答
}
} catch (Exception e) {
e.printStackTrace();
}
}// end of readSingleLine ()
@Override
public void onInit(int status) {
// TODO Auto-generated method stub
if (status == TextToSpeech.SUCCESS) {
mTTS.setSpeechRate(0.9f);// 正常速度是 1.0f; 小過它會變慢
mTTS.speak("I'm ready for listening and speaking practice.", TextToSpeech.QUEUE_FLUSH, null);
}else {
System.out.println("Oops!");
}
}
@Override
protected void onDestroy() {
// TODO Auto-generated method stub
super.onDestroy();
mTTS.shutdown();
}
@Override
protected void onPause() {
// TODO Auto-generated method stub
super.onPause();
if (mTTS != null) {
mTTS.stop();
}
}
}
**********************************
res/layout/main.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:background="@drawable/sunset" >
<TextView
android:id="@+id/textView01"
android:layout_width="350px"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="5dp"
android:text="請選擇下列試題卷練習英聽口說："
android:ellipsize="marquee"
android:scrollHorizontally="true"
android:singleLine="true"
android:focusable="true"
android:focusableInTouchMode="true"
android:marqueeRepeatLimit="marquee_forever"
android:textColor="#FF0000"
android:textSize="22dp" />
<ListView
android:id="@+id/listView1"
android:layout_width="match_parent"
android:layout_height="75dp"
android:layout_weight="0.70"
android:divider="@drawable/list_item_divider"
android:cacheColorHint="#00FF0000"
android:dividerHeight="5px" >
</ListView>
<LinearLayout
android:id="@+id/linearLayout1"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<Button
android:id="@+id/button2"
android:layout_width="150dp"
android:layout_height="wrap_content"
android:text="觀看題目" />
<Button
android:id="@+id/goBackButton"
android:layout_width="150dp"
android:layout_height="wrap_content"
android:text="選擇新試卷" />
</LinearLayout>
</LinearLayout>
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res/drawable/list_item_divider:
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="line" >
<stroke
android:width="1dp"
android:color="#8F8F8F"
android:dashWidth="1dp"
android:dashGap="1dp"/>
</shape>
