我正在开发 SIP 应用程序。我使用了 SipDemo 中的 SipDemo 示例,但出了点问题。我有 NullPointerException =>“尝试关闭管理器时出错。” 在这个地方(例外'e'):
public void initiateCall() {
updateStatus(sipAddress);
try {
SipAudioCall.Listener listener = new SipAudioCall.Listener() {
@Override
public void onCallEstablished(SipAudioCall call) {
call.startAudio();
call.setSpeakerMode(true);
call.toggleMute();
updateStatus(call);
}
@Override
public void onCallEnded(SipAudioCall call) {
updateStatus("Ready.");
}
};
call = manager.makeAudioCall(me.getUriString(), sipAddress, listener, 30);
}
catch (Exception e) {
Log.i("WalkieTalkieActivity/InitiateCall", "Error when trying to close manager.", e);
if (me != null) {
try {
manager.close(me.getUriString());
} catch (Exception ee) {
Log.i("WalkieTalkieActivity/InitiateCall",
"Error when trying to close manager.", ee);
ee.printStackTrace();
}
}
if (call != null) {
call.close();
}
}
}
另外我检查了这个SipManager.isApiSupported()
并且 SipManager.isVoipSupported()
都返回了false。我正在使用 4.0.3 操作系统的 Tab 上对此进行测试。我想知道故障是否在于不支持本机 sip,但我可以轻松地使用 SipDroid 或市场上的其他应用程序拨打电话。
编辑 Logcat 堆栈跟踪:
05-15 22:29:11.255: INFO/WalkieTalkieActivity/InitiateCall(4247): Error when trying to close manager.
05-15 22:29:11.255: INFO/WalkieTalkieActivity/InitiateCall(4247): java.lang.NullPointerException
05-15 22:29:11.255: INFO/WalkieTalkieActivity/InitiateCall(4247): at com.example.android.sip.WalkieTalkieActivity.initiateCall(WalkieTalkieActivity.java:212)
05-15 22:29:11.255: INFO/WalkieTalkieActivity/InitiateCall(4247): at com.example.android.sip.WalkieTalkieActivity$4.onClick(WalkieTalkieActivity.java:324)
05-15 22:29:11.255: INFO/WalkieTalkieActivity/InitiateCall(4247): at com.android.internal.app.AlertController$ButtonHandler.handleMessage(AlertController.java:165)
05-15 22:29:11.255: INFO/WalkieTalkieActivity/InitiateCall(4247): at android.os.Handler.dispatchMessage(Handler.java:99)
05-15 22:29:11.255: INFO/WalkieTalkieActivity/InitiateCall(4247): at android.os.Looper.loop(Looper.java:130)
05-15 22:29:11.255: INFO/WalkieTalkieActivity/InitiateCall(4247): at android.app.ActivityThread.main(ActivityThread.java:3691)
05-15 22:29:11.255: INFO/WalkieTalkieActivity/InitiateCall(4247): at java.lang.reflect.Method.invokeNative(Native Method)
05-15 22:29:11.255: INFO/WalkieTalkieActivity/InitiateCall(4247): at java.lang.reflect.Method.invoke(Method.java:507)
05-15 22:29:11.255: INFO/WalkieTalkieActivity/InitiateCall(4247): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:907)
05-15 22:29:11.255: INFO/WalkieTalkieActivity/InitiateCall(4247): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:665)
05-15 22:29:11.255: INFO/WalkieTalkieActivity/InitiateCall(4247): at dalvik.system.NativeStart.main(Native Method)