在我的应用程序中，我使用ToneGenerator播放简单的声音。通过使用6.0编译应用程序来测试我的应用程序时，我的应用程序由于ToneGenerator init方法而随机崩溃。以下是例外。
java.lang.RuntimeException: Init failed
04-21 12:34:05.497 7166 7166 E MyApplication: at android.media.ToneGenerator.native_setup(Native Method)
04-21 12:34:05.497 7166 7166 E MyApplication: at android.media.ToneGenerator.<init>(ToneGenerator.java:746)
我正在以下方式使用音调发生器。
public ToneGenerator toneGenerator;
public void playSound() {
if (toneGenerator == null) {
toneGenerator = new ToneGenerator(AudioManager.STREAM_NOTIFICATION, 100);
}
toneGenerator.startTone(ToneGenerator.TONE_CDMA_ANSWER, 200);
}
public void releaseToneGenerator() {
if (toneGenerator != null) {
toneGenerator.release();
}
}
任何人遇到同样的问题？..以前我的应用程序运行在4.4上，因为我们没有观察到任何崩溃。在6.0中应用程序崩溃
答案 0 :(得分：5)
使用处理程序解决了这个问题。
private static void playTone(Context context, int mediaFileRawId) {
Log.d(TAG, "playTone");
try {
if (toneGenerator == null) {
toneGenerator = new ToneGenerator(AudioManager.STREAM_NOTIFICATION, 100);
}
toneGenerator.startTone(mediaFileRawId, 200);
Handler handler = new Handler(Looper.getMainLooper());
handler.postDelayed(new Runnable() {
@Override
public void run() {
if (toneGenerator != null) {
Log.d(TAG, "ToneGenerator released");
toneGenerator.release();
toneGenerator = null;
}
}
}, 200);
} catch (Exception e) {
Log.d(TAG, "Exception while playing sound:" + e);
}
}
答案 1 :(得分：0)
以下是一个基于音频发生器的解决方案，它在DialogFragment中使用ontouch侦听器显得稳定。为OnViewCreated方法中的每个按钮设置onTouchListener，然后使用以下ontouch侦听器方法，该方法在触摸按钮时连续播放SIP呼叫上的所选DTMF音，然后在不再触摸按钮时停止播放。 AnswerDialogListener是MainActivity的回调。
编辑：我通过使用toneType = ToneGenerator.TONE_DTMF_0尝试修复编译器警告，打破了以前工作的DTMF音调RFC2833正确输出;而不是toneType = toneGenerator.TONE_DTMF_0;
private View.OnTouchListener myTouchListener = new View.OnTouchListener(){
public boolean onTouch(View v, MotionEvent event) {
String callidText = callid;
AnswerDialogListener listener = (AnswerDialogListener) getActivity();
int streamType = AudioManager.STREAM_MUSIC;
int volume = 50;
if(event.getAction() == MotionEvent.ACTION_DOWN) {
switch (v.getId()) {
case R.id.answer_dialog_0_button:
toneGenerator = new ToneGenerator(streamType, volume);
toneGenerator.getAudioSessionId();
listener.onAnswerResponse(callidText, "Keypad0");
toneType = toneGenerator.TONE_DTMF_0;
toneGenerator.startTone(toneType);
return true;
case R.id.answer_dialog_1_button:
toneGenerator = new ToneGenerator(streamType, volume);
toneGenerator.getAudioSessionId();
listener.onAnswerResponse(callidText, "Keypad1");
toneType = toneGenerator.TONE_DTMF_1;
toneGenerator.startTone(toneType);
return true;
case R.id.answer_dialog_2_button:
toneGenerator = new ToneGenerator(streamType, volume);
toneGenerator.getAudioSessionId();
listener.onAnswerResponse(callidText, "Keypad2");
toneType = toneGenerator.TONE_DTMF_2;
toneGenerator.startTone(toneType);
return true;
case R.id.answer_dialog_3_button:
toneGenerator = new ToneGenerator(streamType, volume);
toneGenerator.getAudioSessionId();
listener.onAnswerResponse(callidText, "Keypad3");
toneType = toneGenerator.TONE_DTMF_3;
toneGenerator.startTone(toneType);
return true;
case R.id.answer_dialog_4_button:
toneGenerator = new ToneGenerator(streamType, volume);
toneGenerator.getAudioSessionId();
listener.onAnswerResponse(callidText, "Keypad4");
toneType = toneGenerator.TONE_DTMF_4;
toneGenerator.startTone(toneType);
return true;
case R.id.answer_dialog_5_button:
toneGenerator = new ToneGenerator(streamType, volume);
toneGenerator.getAudioSessionId();
listener.onAnswerResponse(callidText, "Keypad5");
toneType = toneGenerator.TONE_DTMF_5;
toneGenerator.startTone(toneType);
return true;
case R.id.answer_dialog_6_button:
toneGenerator = new ToneGenerator(streamType, volume);
toneGenerator.getAudioSessionId();
listener.onAnswerResponse(callidText, "Keypad6");
toneType = toneGenerator.TONE_DTMF_6;
toneGenerator.startTone(toneType);
return true;
case R.id.answer_dialog_7_button:
toneGenerator = new ToneGenerator(streamType, volume);
toneGenerator.getAudioSessionId();
listener.onAnswerResponse(callidText, "Keypad7");
toneType = toneGenerator.TONE_DTMF_7;
toneGenerator.startTone(toneType);
return true;
case R.id.answer_dialog_8_button:
toneGenerator = new ToneGenerator(streamType, volume);
toneGenerator.getAudioSessionId();
listener.onAnswerResponse(callidText, "Keypad8");
toneType = toneGenerator.TONE_DTMF_8;
toneGenerator.startTone(toneType);
return true;
case R.id.answer_dialog_9_button:
toneGenerator = new ToneGenerator(streamType, volume);
toneGenerator.getAudioSessionId();
listener.onAnswerResponse(callidText, "Keypad9");
toneType = toneGenerator.TONE_DTMF_9;
toneGenerator.startTone(toneType);
return true;
case R.id.answer_dialog_asterisk_button:
toneGenerator = new ToneGenerator(streamType, volume);
toneGenerator.getAudioSessionId();
listener.onAnswerResponse(callidText, "KeypadAsterisk");
toneType = toneGenerator.TONE_DTMF_S;
toneGenerator.startTone(toneType);
return true;
case R.id.answer_dialog_hash_button:
toneGenerator = new ToneGenerator(streamType, volume);
toneGenerator.getAudioSessionId();
listener.onAnswerResponse(callidText, "KeypadHash");
toneType = toneGenerator.TONE_DTMF_P;
toneGenerator.startTone(toneType);
return true;
}
}
if(event.getAction() == MotionEvent.ACTION_UP) {
switch (v.getId()) {
case R.id.answer_dialog_0_button:
toneGenerator.stopTone();
toneGenerator.release();
return true;
case R.id.answer_dialog_1_button:
toneGenerator.stopTone();
toneGenerator.release();
return true;
case R.id.answer_dialog_2_button:
toneGenerator.stopTone();
toneGenerator.release();
return true;
case R.id.answer_dialog_3_button:
toneGenerator.stopTone();
toneGenerator.release();
return true;
case R.id.answer_dialog_4_button:
toneGenerator.stopTone();
toneGenerator.release();
return true;
case R.id.answer_dialog_5_button:
toneGenerator.stopTone();
toneGenerator.release();
return true;
case R.id.answer_dialog_6_button:
toneGenerator.stopTone();
toneGenerator.release();
return true;
case R.id.answer_dialog_7_button:
toneGenerator.stopTone();
toneGenerator.release();
return true;
case R.id.answer_dialog_8_button:
toneGenerator.stopTone();
toneGenerator.release();
return true;
case R.id.answer_dialog_9_button:
toneGenerator.stopTone();
toneGenerator.release();
return true;
case R.id.answer_dialog_asterisk_button:
toneGenerator.stopTone();
toneGenerator.release();
return true;
case R.id.answer_dialog_hash_button:
toneGenerator.stopTone();
toneGenerator.release();
return true;
}
}
return false;
}
};
以下是MainActivity回调处理程序中if语句的片段，用于在活动SIP呼叫上输出DTMF：
if (response.equals("Keypad0")) {
try {
if (call != null) {
call.sendDtmf(0);
}
} catch (Exception e) {
e.printStackTrace();
}
} else if (response.equals("Keypad1")) {
try {
if (call != null) {
call.sendDtmf(1);
}
} catch (Exception e) {
e.printStackTrace();
}
}