자주쓰는 코드

코드

* 리소스 얻기 Button button1 = findViewById(R.id.button1); * Listener 설정 button1.setOnClickListener( new View.OnClickListener() { public void onClick(View v) { // to do } });;

* Toast 사용

Toast.makeText(getApplicationContext(), "버튼클릭", Toast.LENGTH_SHORT).show();

* 브라우징

Intent mIntent = new Intent(Intent.ACTION_VIEW, Uri.parse("http://www.naver.com"));

startActivity(mIntent);

* 전화

Intent mIntent = new Intent(Intent.ACTION_VIEW, Uri.parse("tel:/114"));startActivity(mIntent);

*갤러리

Intent mIntent = new Intent(Intent.ACTION_VIEW, Uri.parse("content://media/internal/images/media"));

startActivity(mIntent);

*종료

finish();

현재 날짜 구하기

Calendar cal = Calendar.getInstance(); int cYear = cal.get(Calendar.YEAR); int cMonth = cal.get(Calendar.MONTH); int cDay = cal.get(Calendar.DAY_OF_MONTH);  datePicker.init(cYear, cMonth, cDay, new DatePicker.OnDateChangedListener() { @Override public void onDateChanged(DatePicker view, int year, int monthOfYear, int dayOfMonth) { String date = Integer.toString(year) + "_" + Integer.toString(monthOfYear+1) + "_" + Integer.toString(dayOfMonth); } });

그외

상단 앱아이콘 설정

1) IMG: 72x72 png

res/drawable/ic_luncher.png

2) code : MainActivity

onCreate()

{

 getSupportActionBar().setDisplayShowHomeEnabled(true);

 getSupportActionBar().setIcon(R.drawable.ic_luncher);

}