如何通過我的耳機流式傳輸DTMF音？

Question

一種新的android。我有一個應用程序正在運行，我正在生成DTMF信號並解釋使用微控制器生成的內容。我正在成功生成音調，但音調正在通過揚聲器播放，我想通過拼接耳機插孔播放音調（所以即使在解決方案之後，我仍然需要忽略android在切換到揚聲器時不希望切換到揚聲器耳機在那裏）。提前致謝。該代碼是在這裏..

package edu.lehigh.cse.paclab.carbot; 

import android.app.Activity; 
import android.os.Bundle; 
import android.util.Log; 
import android.view.View; 
import android.widget.ToggleButton; 
import android.media.ToneGenerator; 
import android.media.AudioManager; 

import static android.media.ToneGenerator.TONE_DTMF_0; 
import static android.media.ToneGenerator.TONE_DTMF_1; 
import static android.media.ToneGenerator.TONE_DTMF_2; 
import static android.media.ToneGenerator.TONE_DTMF_3; 
import static android.media.ToneGenerator.TONE_DTMF_4; 
import static android.media.ToneGenerator.TONE_DTMF_5; 
import static android.media.ToneGenerator.TONE_DTMF_6; 

public class DTMFActivity extends Activity { 
private static final String TAG = "DTMF"; 

ToggleButton forward; 
ToggleButton reverse; 
ToggleButton c_clockwise; 
ToggleButton clockwise; 
ToggleButton pointTurnLeft; 
ToggleButton pointTurnRight; 

static final ToneGenerator _toneGenerator = new ToneGenerator(AudioManager.STREAM_DTMF, 100); 

/** Called when the activity is first created. */ 
@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.main); 


    forward = (ToggleButton)findViewById(R.id.forward); 
    reverse = (ToggleButton)findViewById(R.id.reverse); 
    c_clockwise = (ToggleButton)findViewById(R.id.c_clockwise); 
    clockwise = (ToggleButton)findViewById(R.id.clockwise); 
    pointTurnLeft = (ToggleButton)findViewById(R.id.pointTurnLeft); 
    pointTurnRight = (ToggleButton)findViewById(R.id.pointTurnRight); 

} 

public void onPause() { 
    super.onPause(); 
} 

public void onDestroy() { 
    super.onDestroy(); 
} 

public void forward(View v){ 

    if(!forward.isChecked()){ 
     _toneGenerator.stopTone(); 
     Log.e(TAG, "forward: not emitting"); 
    } 
    else{ 
     _toneGenerator.startTone(TONE_DTMF_0); 
     Log.e(TAG, "forward: emitting"); 
    } 
} 

public void reverse(View v){ 

    if(!reverse.isChecked()){ 
     _toneGenerator.stopTone(); 
     Log.e(TAG, "reverse: not emitting"); 
    } 
    else{ 
     _toneGenerator.startTone(TONE_DTMF_1); 
     Log.e(TAG, "reverse: emitting"); 
    } 
} 

public void c_clockwise(View v){ 

    if(!c_clockwise.isChecked()){ 
     _toneGenerator.stopTone(); 
     Log.e(TAG, "c_clockwise: not emitting"); 
    } 
    else{ 
     _toneGenerator.startTone(TONE_DTMF_2); 
     Log.e(TAG, "c_clockwise: emitting"); 
    } 
} 

public void clockwise(View v){ 

    if(!clockwise.isChecked()){ 
     _toneGenerator.stopTone(); 
     Log.e(TAG, "clockwise: not emitting"); 
    } 
    else{ 
     _toneGenerator.startTone(TONE_DTMF_3); 
     Log.e(TAG, "clockwise: emitting"); 
    } 
} 

public void pointTurnLeft(View v){ 

    if(!pointTurnLeft.isChecked()){ 
     _toneGenerator.stopTone(); 
     Log.e(TAG, "pointTurnLeft: not emitting"); 
    } 
    else{ 
     _toneGenerator.startTone(TONE_DTMF_4); 
     Log.e(TAG, "pointTurnLeft: emitting"); 
    } 
} 

public void pointTurnRight(View v){ 

    if(!pointTurnRight.isChecked()){ 
     _toneGenerator.stopTone(); 
     Log.e(TAG, "pointTurnRight: not emitting"); 
    } 
    else{ 
     _toneGenerator.startTone(TONE_DTMF_5); 
     Log.e(TAG, "pointTurnRight: emitting"); 
    } 
} 

} 

Answer 1

嘗試STREAM.MUSIC而不是STREAM.DTMF：

static final ToneGenerator _toneGenerator = new ToneGenerator(
               AudioManager.STREAM_MUSIC, 100);