Android应用SendDtmf的方法

一.找到Z:\android2.3.4_GB_T34\packages\apps\Phone\src\com\android\phone\DTMFTwelveKeyDialer.java文件中的processDtmf函数,去掉private属性,使得InCallScreen.Java中可以通过mDialer调用processDtmf发送DTMF.

二.找到Z:\android2.3.4_GB_T34\packages\apps\Phone\src\com\android\phone\InCallScreen.java文件,添加对应用发送的消息的处理,如下代码:

private final BroadcastReceiver mReceiverDtmf = new BroadcastReceiver()
{
    @Override
    public void onReceive(Context context, Intent intent)
    {
        if(intent.getAction().equals("SendDtmf"))
        {
            String sDtmf = intent.getStringExtra("char");
            Log.d("SendDtmf:", sDtmf);
            mDialer.processDtmf(sDtmf.charAt(0));
        }
    }
}; 

并在OnCreate中注册mReceiverDtmf:

registerReceiver(mReceiverDtmf, new IntentFilter("SendDtmf"));

在OnDestroy中添加以下代码:

unregisterReceiver(mReceiverDtmf);

三.在应用程序中要发送DTMF的地方添加以下代码:

String sDtmf = "1";//此处改为你要发送的字符
Intent intent = new Intent("SendDtmf");
intent.putExtra("char", sDtmf);
sendBroadcast(intent);