Mr.Lee, Korean.
You will need to read this official Android manual first.
Secondly, please get an example of the code mentioned above from Here in the Android Guide
Thirdly, you can find what you want to know in the code example as follows:
private void setUpMap() { mMap.setMyLocationEnabled(true);
Finally, please read this good tutorial and you will get good help.
For more information about the Google Maps API, please contact me who lives in Seoul.
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