默认phone通话 - 如何在通话中select号码服务?

Default phone call - How to select a number service during a call?

我正在进行 默认 phone 调用。一切正常,直到我打电话给总机接线员。

在这种调用中,phone表示:"Press 1 to do A, press 2 to do B"。

我做了几个小时的研究,但找不到... 我确实尝试过此代码,但它不起作用。

 keyPressed(KeyEvent.KEYCODE_1); // when press key 1

 private void keyPressed(int keyCode) {
    ....
    Intent i = new Intent(Intent.ACTION_CALL, Uri.parse("tel://" + keyCode));
    startActivity(I);
    ....
    playTone(ToneGenerator.TONE_DTMF_1, TONE_LENGTH_INFINITE);
 }

非常感谢您的任何建议!

已添加 1 个: 我正在这样使用 InCallService:

 class CallService : InCallService() {
 private var isShowEnded = true

override fun onCallAdded(call: Call) {
    super.onCallAdded(call)
    OngoingCall().setCall(call)
    CallActivity.getInstance().start(this, call)
    isShowEnded = false
}

override fun onCallRemoved(call: Call) {
    super.onCallRemoved(call)
    OngoingCall().setCall(null)
}
 }

和 OngoingCall:

public class OngoingCall {

public static BehaviorSubject<Integer> state = BehaviorSubject.create();
private static Call sCall;

public Call getsCall() {
    return sCall;
}

@RequiresApi(api = Build.VERSION_CODES.M)
private Object callback = new Call.Callback() {
    @Override
    public void onStateChanged(Call call, int newState) {
        super.onStateChanged(call, newState);
        state.onNext(newState);
    }
};

@RequiresApi(api = Build.VERSION_CODES.M)
public final void setCall(@Nullable Call value) {
    if (sCall != null) {
        sCall.unregisterCallback((Call.Callback) callback);
    }

    if (value != null) {
        value.registerCallback((Call.Callback) callback);
        state.onNext(value.getState());
    }

    sCall = value;
}

@RequiresApi(api = Build.VERSION_CODES.M)
public void answer() {
    if (sCall != null) {
        assert sCall != null;
        sCall.answer(VideoProfile.STATE_AUDIO_ONLY);
    }
}

@RequiresApi(api = Build.VERSION_CODES.M)
public void hold(boolean hold) {
    if (sCall != null) {
        if (hold) sCall.hold();
        else sCall.unhold();
    }
}

@RequiresApi(api = Build.VERSION_CODES.M)
public void addCall(Call call) {
    if (sCall != null) {
        sCall.conference(call);
    }
}

@RequiresApi(api = Build.VERSION_CODES.M)
public void hangup() {
    if (sCall != null) {
        sCall.disconnect();
    }
}
}

然后我在按下键盘时尝试了这个:

      mTrueCallerOngoingCall.getsCall().playDtmfTone((char) tone); // inside playTone()

但是还是不行:(

更新二: 我已经修复了添加此方法的问题:

private char getChar(int tone) {
    if (tone == 0) return '0';
    else if (tone == 1) return '1';
    else if (tone == 2) return '2';
    else if (tone == 3) return '3';
    else if (tone == 4) return '4';
    else if (tone == 5) return '5';
    else if (tone == 6) return '6';
    else if (tone == 7) return '7';
    else if (tone == 8) return '8';
    else if (tone == 9) return '9';
    else if (tone == 10) return '*';
    else return '#';
}

并将我上面的代码更改为

            mTrueCallerOngoingCall.getsCall().playDtmfTone(getChar(tone));
            mTrueCallerOngoingCall.getsCall().stopDtmfTone();

是。希望能帮到你。

call.playDtmfTone(char);

调用路径:

android.telecom.Call;

发件人:任何 Class 扩展 InCallService。

在方法中:onCallAdded(call);