How to log an object in Android Java? [duplicate]

Question

I am trying to log the following in Android Java:

    Log.i("Build.VERSION.SDK_INT", Build.VERSION.SDK_INT.toString());
    Log.i("Build.VERSION_CODES.M", Build.VERSION_CODES.M.toString());
    Log.i("Build.VERSION_CODES.O", Build.VERSION_CODES.O.toString());
    Log.i("getReactApplicationContext().checkCallingOrSelfPermission(Manifest.permission.READ_SMS", getReactApplicationContext().checkCallingOrSelfPermission(Manifest.permission.READ_SMS).toString());
    Log.i("getReactApplicationContext().checkCallingOrSelfPermission(Manifest.permission.READ_PHONE_NUMBERS)", getReactApplicationContext().checkCallingOrSelfPermission(Manifest.permission.READ_PHONE_NUMBERS).toString());
    Log.i("getReactApplicationContext().getSystemService(Context.TELEPHONY_SERVICE)", getReactApplicationContext().getSystemService(Context.TELEPHONY_SERVICE).toString());
    Log.i("Build.VERSION_CODES.O", Build.VERSION_CODES.O.toString());

But I get the error error: int cannot be dereferenced on every line.

How can I log these objects in logcat?

Thanks, but is every one of these values an integer? My question is how can I log these objects? — Mr. Robot
– Mr. Robot, Commented Mar 4, 2021 at 18:10
Look at the top answer to the question I referenced, it explains why you can't call methods on primitives and even gives an alternative. — Henry Twist
– Henry Twist, Commented Mar 4, 2021 at 18:13
There is an error: " The logging tag can be at most 23 characters, was 86 (getReactApplicationContext().checkCallingOrSelfPermission(Manifest.permission.READ_SMS)" — Roie Shlosberg
– Roie Shlosberg, Commented Mar 4, 2021 at 19:00

artman · Accepted Answer · 2021-03-04 18:52:03Z

1

Because Build.VERSION.SDK_INT and other are integers. They are primitives and do not have toString() function. If you want to convert int to String you can use String.valueOf().

Log.i("Build.VERSION.SDK_INT", String.valueOf(Build.VERSION.SDK_INT));

Or sometimes it is easier to use string concatenation. For example:

Log.i("Build.VERSION.SDK_INT", "" + Build.VERSION.SDK_INT);

I mostly use second method for debugging purposes.

answered Mar 4, 2021 at 18:52

artman

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