让TextView和EditText发出声音在拨打电话等应用中很常见，如果采用TTS语音引擎未免太麻烦！所以可以采用MediaPlayer播放语音文件的形式
下面是关键代码：
关键变量定义
private TextView numInput;
private int length = 0; //当前字符串长度
private int beforeLength = 0;//上一次字符串长度
private MediaPlayer mediaPlayer;
private ArrayList mListeners = null;
EditTextWatchTEL watch;初始化使用方法 watch = new EditTextWatchTEL();
numInput.addTextChangedListener(watch);
if (mListeners == null) {
mListeners = new ArrayList();
}
mListeners.add(watch);
主要代码
private class EditTextWatchTEL implements TextWatcher {
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void afterTextChanged(Editable s) {
if (length > 0) {
if (beforeLength list = new ArrayList();
for(int i=0;i= 0) {
mListeners.remove(i);
}
}
numInput.removeTextChangedListener(watcher);
}
@Override
protected void onDestroy() {
removeTextChangedListener(watch);
super.onDestroy();
}记录与分享，让你我共成长！欢迎查看我的其他博客；我的博客地址：http://blog.csdn.net/caicongyang
