运行时的Android Call Forwarding异常

Question

当被叫人想要转发其他人时，我的应用程序会收到错误。这是我的代码博客，我的日志图表无法收到任何错误或警告

public void onCallStateChanged(int state, String incomingNumber) {
    if (TelephonyManager.CALL_STATE_RINGING == state) {
        ivRedirect.setVisibility(View.VISIBLE);
        ivCall.setVisibility(View.INVISIBLE);
    }
    if (TelephonyManager.CALL_STATE_OFFHOOK == state) {
        ivRedirect.setVisibility(View.VISIBLE);
        ivCall.setVisibility(View.INVISIBLE);

        ivRedirect.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                callForwardString = "*116*" + callForwardString + "#";
                Intent intentCallForward = new Intent(Intent.ACTION_CALL); // ACTION_CALL
                Uri uri2 = Uri.fromParts("tel", callForwardString, "#");
                intentCallForward.setData(uri2);
                context.startActivity(intentCallForward);
            }
        });
    }
    if (TelephonyManager.CALL_STATE_IDLE == state) {
        ivRedirect.setVisibility(View.GONE);
        ivCall.setVisibility(View.VISIBLE);
    }
}