2swan

main.xml main.java public class MainActivity3 extends AppCompatActivity { private Spinner spinner; private TextView tv_result; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main3); spinner = (Spinner) findViewById(R.id.spinner); tv_result = (TextView) findViewById(R.id.tv_result); spinner.setOnItemSelectedListe..

public class MainActivity3 extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main3); // 액티비티 또는 프래그먼트가 생성이 되었을 때 이곳 내부구문을 실행 Log.e("onCreate","ENTER"); } @Override protected void onStart() { super.onStart(); Log.e("onStart","ENTER"); } @Override protected void onResume() { super.onResume..

main.xml dialog.xml main.activity public class MainActivity7_grid extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main_activity7_grid); setTitle("그리드 뷰 영화 포스터"); GridView gridView = findViewById(R.id.gridView1); MyGridAdapter gridAdapter = new MyGridAdapter(this); gridView.setAdapter(g..

main.activity public class MainActivity6_list extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main_activity6_list); EditText edtItem = findViewById(R.id.edtItem); Button btnAdd = findViewById(R.id.btnAdd); ListView listView = findViewById(R.id.listView1); ArrayListarr = new ArrayList()..

main.activity public class MainActivity5 extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main5); setTitle("리스트 뷰 테스트"); ListView listView1 = findViewById(R.id.listView1); String[ ] mid = {"리스트 뷰 String 1","리스트 뷰 String 2", "리스트 뷰 String 3", "리스트 뷰 String 4","리스트 뷰 String 5", "리스트 뷰 Str..

main.activity public class MainActivity3 extends AppCompatActivity { private ActivityMain3Binding binding; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); //바인딩 객체 초기화 첫번째 방법 binding = ActivityMain3Binding.inflate(getLayoutInflater()); setContentView(binding.getRoot()); setTitle("암시적 인텐트 예제"); //바인딩 객체 초기화 두번째 방법 // binding = ActivityMain3Bindin..

main.xml input.xml output.xml stu.xml main.activity public class MainActivity2 extends AppCompatActivity { private String name, age, phone; private Student student; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main2); Button btnDataInput = findViewById(R.id.btnDataInput); Button btnDataOut = findViewById(R.id...

main.xml sub.xml main.activity public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); Button button = findViewById(R.id.btnAdd); EditText edtNum1 = findViewById(R.id.edtNum1); EditText edtNum2 = findViewById(R.id.edtNum2); ActivityResultLauncher launcher = reg..

main.xml input.xml output.xml stuput.xml Student.java (class) public class Student implements Serializable { private int sno; private String name; private String major; public Student(){ } public Student(int sno, String name, String major) { this.sno = sno; this.name = name; this.major = major; } public int getSno() { return sno; } public void setSno(int sno) { this.sno = sno; } public String ge..

.xml .java public class MainActivity2 extends AppCompatActivity { private WebView webView; private String url = "https://www.naver.com"; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main2); webView = findViewById(R.id.webView); webView.getSettings().setJavaScriptEnabled(true); webView.loadUrl(url); webView.set..

.xml .java public class MainActivity2 extends AppCompatActivity { Button btn_dialog; TextView tv_result; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main2); //Dialog 팝업창 btn_dialog = findViewById(R.id.btn_dialog); tv_result = findViewById(R.id.tv_result); btn_dialog.setOnClickListener(new View.OnClickListener..

public class MainActivity2 extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main2); //Log 출력 String Lee = "이"; Log.e("MainActivity2 : ",Lee); //e는 에러 줄임말 (에러 형태로 출력) int a = 10; Log.e("MainActivity2", String.valueOf(a)); // int값은 로그로 출력할 때 String으로 출력하기 때문에 a값을 String 형태로 출력 } }