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1. activity_main.xml 2. MainActivity.java Chronometer chrono; RadioButton rdoCal, rdoTime; DatePicker dPicker; TimePicker tPicker; TextView tvYear, tvMonth, tvDay, tvHour, tvMinute; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); setTitle("시간 예약"); // 크로노미터 chrono = (Chronometer) findViewById(R.id.chronometer..

* 콘텍스트메뉴 기본 사용 1. ActivityMain 2.MainActivity.java public class MainActivity extends AppCompatActivity { LinearLayout baseLayout; Button button1, button2; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); setTitle("배경색 바꾸기(컨텍스트 메뉴)"); baseLayout = (LinearLayout) findViewById(R.id.baseLayout); button1 = (Button)..

xml Main.java public class MainActivity extends AppCompatActivity { LineChartView lineChartView; String[] axisData = {"Jan", "Feb", "Mar", "Apr", "May", "June", "July", "Aug", "Sept", "Oct", "Nov", "Dec"}; int[] yAxisData = {50, 20, 15, 30, 20, 60, 15, 40, 45, 10, 90, 18}; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.a..