안드로이드 Calendar 예제 따라하기

- GridView를 이용해서 달력을 만들고 Database를 이용해 일정을 입력,삭제,수정 할 수 있는 프로그램을
만들어 보자.
- 이 예제를 통해서 달력 및 일정관리 어플리케이션을 만들어 볼 수 있다.

-Java 소스

public class Ex11_CalendarActivity extends Activity implements OnClickListener,

OnItemClickListener {

ArrayList<String> mItems;

ArrayAdapter<String> adapter;

TextView textYear;

TextView textMon;

/** Called when the activity is first created. */

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

textYear = (TextView) this.findViewById(R.id.edit1);

textMon = (TextView) this.findViewById(R.id.edit2);

mItems = new ArrayList<String>();

adapter = new ArrayAdapter<String>(this,

android.R.layout.simple_list_item_1, mItems);

GridView gird = (GridView) this.findViewById(R.id.grid1);

gird.setAdapter(adapter);

gird.setOnItemClickListener(this);

Date date = new Date();// 오늘에 날짜를 세팅 해준다.

int year = date.getYear() + 1900;

int mon = date.getMonth() + 1;

textYear.setText(year + "");

textMon.setText(mon + "");

fillDate(year, mon);

Button btnmove = (Button) this.findViewById(R.id.bt1);

btnmove.setOnClickListener(this);

}

@Override

public void onClick(View arg0) {

// TODO Auto-generated method stub

if (arg0.getId() == R.id.bt1) {

int year = Integer.parseInt(textYear.getText().toString());

int mon = Integer.parseInt(textMon.getText().toString());

fillDate(year, mon);

}

private void fillDate(int year, int mon) {

mItems.clear();

mItems.add("일");

mItems.add("월");

mItems.add("화");

mItems.add("수");

mItems.add("목");

mItems.add("금");

mItems.add("토");

Date current = new Date(year - 1900, mon - 1, 1);

int day = current.getDay(); // 요일도 int로 저장.

for (int i = 0; i < day; i++) {

mItems.add("");

}

current.setDate(32);// 32일까지 입력하면 1일로 바꿔준다.

int last = 32 - current.getDate();

for (int i = 1; i <= last; i++) {

mItems.add(i + "");

}

adapter.notifyDataSetChanged();

}

@Override

public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {

// TODO Auto-generated method stub

if (mItems.get(arg2).equals("")) {

;

} else {

Intent intent = new Intent(this, ExToday.class);//해당 일을 눌렸을때

intent.putExtra("Param1", textYear.getText().toString() + "/"

+ textMon.getText().toString() + "/" + mItems.get(arg2));

startActivity(intent);

}

--------------------------------------------------------------------------------------------------------

public class ExToday extends Activity implements OnItemClickListener,

OnClickListener { //오늘의 일정 목록 띄우기

MyDBHelper mDBHelper;

String today;

Cursor cursor;

SimpleCursorAdapter adapter;

ListView list;

/** Called when the activity is first created. */

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.extoday);

Intent intent = getIntent();

today = intent.getStringExtra("Param1");

TextView text = (TextView) findViewById(R.id.texttoday);

text.setText(today);

mDBHelper = new MyDBHelper(this, "Today.db", null, 1);

SQLiteDatabase db = mDBHelper.getWritableDatabase();

cursor = db.rawQuery(

"SELECT * FROM today WHERE date = '" + today + "'", null);

adapter = new SimpleCursorAdapter(this,

android.R.layout.simple_list_item_2, cursor, new String[] {

"title", "time" }, new int[] { android.R.id.text1,

android.R.id.text2 });

ListView list = (ListView) findViewById(R.id.list1);

list.setAdapter(adapter);

list.setOnItemClickListener(this);

mDBHelper.close();

Button btn = (Button) findViewById(R.id.btnadd);

btn.setOnClickListener(this);

}

@Override

public void onItemClick(AdapterView<?> parent, View view, int position,

long id) {

// TODO Auto-generated method stub

Intent intent = new Intent(this, Detail.class);

cursor.moveToPosition(position);

intent.putExtra("ParamID", cursor.getInt(0));

startActivityForResult(intent, 0);

}

@Override

public void onClick(View v) {

// TODO Auto-generated method stub

Intent intent = new Intent(this, Detail.class);

intent.putExtra("ParamDate", today);

startActivityForResult(intent, 1);

}

@Override

protected void onActivityResult(int requestCode, int resultCode, Intent data) {

// TODO Auto-generated method stub

// super.onActivityResult(requestCode, resultCode, data);

switch (requestCode) {

case 0:

case 1:

if (resultCode == RESULT_OK) {

// adapter.notifyDataSetChanged();

SQLiteDatabase db = mDBHelper.getWritableDatabase();

cursor = db.rawQuery("SELECT * FROM today WHERE date = '"

+ today + "'", null);

adapter.changeCursor(cursor);

mDBHelper.close();

}

break;

}

-------------------------------------------------------------------------------------------------------

public class Detail extends Activity implements OnClickListener { // 일정목록 추가하기

MyDBHelper mDBHelper;

int mId;

String today;

EditText editDate, editTitle, editTime, editMemo;

/** Called when the activity is first created. */

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.detail);

editDate = (EditText) findViewById(R.id.editdate);

editTitle = (EditText) findViewById(R.id.edittitle);

editTime = (EditText) findViewById(R.id.edittime);

editMemo = (EditText) findViewById(R.id.editmemo);

Intent intent = getIntent();

mId = intent.getIntExtra("ParamID", -1);

today = intent.getStringExtra("ParamDate");

mDBHelper = new MyDBHelper(this, "Today.db", null, 1);

if (mId == -1) {

editDate.setText(today);

} else {

SQLiteDatabase db = mDBHelper.getWritableDatabase();

Cursor cursor = db.rawQuery("SELECT * FROM today WHERE _id='" + mId

+ "'", null);

if (cursor.moveToNext()) {

editTitle.setText(cursor.getString(1));

editDate.setText(cursor.getString(2));

editTime.setText(cursor.getString(3));

editMemo.setText(cursor.getString(4));

}

mDBHelper.close();

}

Button btn1 = (Button) findViewById(R.id.btnsave);

btn1.setOnClickListener(this);

Button btn2 = (Button) findViewById(R.id.btndel);

btn2.setOnClickListener(this);

Button btn3 = (Button) findViewById(R.id.btncancel);

btn3.setOnClickListener(this);

if (mId == -1) {

btn2.setVisibility(View.INVISIBLE);

}

@Override

public void onClick(View v) {

// TODO Auto-generated method stub

SQLiteDatabase db = mDBHelper.getWritableDatabase();

switch (v.getId()) {

case R.id.btnsave:

if (mId != -1) {

db.execSQL("UPDATE today SET title='"

+ editTitle.getText().toString() + "',date='"

+ editDate.getText().toString() + "', time='"

+ editTime.getText().toString() + "', memo='"

+ editMemo.getText().toString() + "' WHERE _id='" + mId

+ "';");

} else {

db.execSQL("INSERT INTO today VALUES(null, '"

+ editTitle.getText().toString() + "', '"

+ editDate.getText().toString() + "', '"

+ editTime.getText().toString() + "', '"

+ editMemo.getText().toString() + "');");

}

mDBHelper.close();

setResult(RESULT_OK);

break;

case R.id.btndel:

if (mId != -1) {

db.execSQL("DELETE FROM today WHERE _id='" + mId + "';");

mDBHelper.close();

}

setResult(RESULT_OK);

break;

case R.id.btncancel:

setResult(RESULT_CANCELED);

break;

}

finish();

}

}
--------------------------------------------------------------------------------------------------------

public class MyDBHelper extends SQLiteOpenHelper { //데이터베이스 클래스

public MyDBHelper(Context context, String name, CursorFactory factory,

int version) {

super(context, name, factory, version);

// TODO Auto-generated constructor stub

}

@Override

public void onCreate(SQLiteDatabase db) {

// TODO Auto-generated method stub

db.execSQL("CREATE TABLE today(_id INTEGER PRIMARY KEY AUTOINCREMENT, "

+ "title TEXT, " + "date TEXT , " + "time TEXT, "

+ "memo TEXT );");

}

@Override

public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {

// TODO Auto-generated method stub

db.execSQL("DROP TABLE IF EXIST today;");

onCreate(db);

}

}

-xml 소스

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

android:orientation="vertical" >

<LinearLayout

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:layout_weight="0"

android:gravity="center"

android:orientation="horizontal" >

<EditText

android:id="@+id/edit1"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:hint="년도 입력" />

<TextView

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:hint="년" />

<EditText

android:id="@+id/edit2"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:hint="월을 입력" />

<TextView

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:hint="월" />

<Button

android:id="@+id/bt1"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:hint="클릭" />

</LinearLayout>

<LinearLayout

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:layout_weight="1"

android:orientation="vertical" >

<GridView

android:id="@+id/grid1"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:gravity="center"

android:numColumns="7" >

</GridView>

</LinearLayout>

--------------------------------------------------------------------------------------------------------

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

android:orientation="vertical" >

<LinearLayout

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:layout_weight="0"

android:orientation="horizontal" >

<TextView

android:id="@+id/texttoday"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:gravity="center"

android:text="일정 관리" />

</LinearLayout>

<LinearLayout

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:layout_weight="1"

android:orientation="vertical" >

<ListView

android:id="@+id/list1"

android:layout_width="fill_parent"

android:layout_height="wrap_content" />

</LinearLayout>

<LinearLayout

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:layout_weight="0"

android:orientation="horizontal" >

<Button

android:id="@+id/btnadd"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:text="일정 추가" />

</LinearLayout>

</LinearLayout>
-------------------------------------------------------------------------------------------------------

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

</LinearLayout>

</LinearLayout>

-실행 화면

- Source code Link

https://github.com/namseungngil/android-examples/tree/master/Ex11_Calendar

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