Why does Logcat not print a log when the tag starts with "IMS"?
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.btnOne:
System.out.println("Button One log by sout");
Log.e("IMSfsadfasdfasdf", "log by Log.e()");
break;
case R.id.btnTwo:
System.out.println("Button Two log by sout");
Log.e("MService", "log by Log.e()");
break;
}
}
Log:
04-07 15:05:48.838 4363-4363/com.licheedev.myapplication I/System.out: Button One log by sout
04-07 15:05:49.916 4363-4363/com.licheedev.myapplication I/System.out: Button Two log by sout
04-07 15:05:49.916 4363-4363/com.licheedev.myapplication E/MService: log by Log.e()
04-07 15:05:54.109 4363-4363/com.licheedev.myapplication I/System.out: Button Two log by sout
04-07 15:05:54.109 4363-4363/com.licheedev.myapplication E/MService: log by Log.e()
04-07 15:05:54.822 4363-4363/com.licheedev.myapplication I/System.out: Button One log by sout
04-07 15:05:55.638 4363-4363/com.licheedev.myapplication I/System.out: Button One log by sout
Screenshot:
I'm not exactly sure, but I think this have to do with this line of code in the log mechanism of Android. This is in the function __android_log_write(prio, tag, buf);
/* XXX: This needs to go! */
if (!strcmp(tag, "HTC_RIL") ||
!strncmp(tag, "RIL", 3) || /* Any log tag with "RIL" as the prefix */
!strncmp(tag, "IMS", 3) || /* Any log tag with "IMS" as the prefix */
!strcmp(tag, "AT") ||
!strcmp(tag, "GSM") ||
!strcmp(tag, "STK") ||
!strcmp(tag, "CDMA") ||
!strcmp(tag, "PHONE") ||
!strcmp(tag, "SMS")) {
log_id = LOG_ID_RADIO;
// Inform third party apps/ril/radio.. to use Rlog or RLOG
snprintf(tmp_tag, sizeof(tmp_tag), "use-Rlog/RLOG-%s", tag);
tag = tmp_tag;
}
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