1. \uc11c\ub860<\/h2>\n
\uc548\ub4dc\ub85c\uc774\ub4dc \uc571 \uac1c\ubc1c\uc740 \ud604\uc7ac \uae30\uc220 \uc0b0\uc5c5\uc5d0\uc11c \ub9e4\uc6b0 \uc911\uc694\ud55c \ubd84\uc57c\uc785\ub2c8\ub2e4. \ub2e4\uc591\ud55c \uc571\uc774 \uc2a4\ub9c8\ud2b8\ud3f0\uacfc \ud0dc\ube14\ub9bf\uc5d0\uc11c \uc0ac\uc6a9\ub418\uba70, \uc774 \uc571\ub4e4\uc740 \uc0ac\ub78c\ub4e4\uc758 \uc77c\uc0c1\uc0dd\ud65c\uc744 \ub354\uc6b1 \ud3b8\ub9ac\ud558\uac8c \ub9cc\ub4e4\uc5b4 \uc90d\ub2c8\ub2e4. \ubcf8 \uac15\uc88c\uc5d0\uc11c\ub294 \uc790\ubc14\ub97c \ud65c\uc6a9\ud55c \uc548\ub4dc\ub85c\uc774\ub4dc \uc571 \uac1c\ubc1c\uc758 \ud2b9\uc9d5\uc5d0 \ub300\ud574 \uc54c\uc544\ubcf4\uace0, \uc608\uc81c \ucf54\ub4dc\ub97c \ud1b5\ud55c \uc2e4\uc2b5\uc744 \uc9c4\ud589\ud558\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n<\/section>\n \uc548\ub4dc\ub85c\uc774\ub4dc\ub294 2003\ub144 \uc548\ub4dc\ub85c\uc774\ub4dc Inc.\uc5d0 \uc758\ud574 \uac1c\ubc1c\ub418\uc5c8\uc2b5\ub2c8\ub2e4. Google\uc774 2005\ub144\uc5d0 \uc548\ub4dc\ub85c\uc774\ub4dc Inc.\ub97c \uc778\uc218\ud55c \ub4a4, \uc548\ub4dc\ub85c\uc774\ub4dc\ub294 \uae09\uaca9\ud788 \uc131\uc7a5\ud558\uba70 \uc5ec\ub7ec \ud50c\ub7ab\ud3fc\uc5d0\uc11c \ub110\ub9ac \uc0ac\uc6a9\ub418\ub294 \uc6b4\uc601 \uccb4\uc81c\uac00 \ub418\uc5c8\uc2b5\ub2c8\ub2e4. \uae30\ubcf8\uc801\uc73c\ub85c \ub9ac\ub205\uc2a4 \ucee4\ub110 \uc704\uc5d0\uc11c \ub3d9\uc791\ud558\uba70, \uc571\uc740 JAVA \uae30\ubc18\uc73c\ub85c \uac1c\ubc1c\ub429\ub2c8\ub2e4.<\/p>\n<\/section>\n \uc548\ub4dc\ub85c\uc774\ub4dc \uc571\uc744 \uac1c\ubc1c\ud558\uae30 \uc704\ud574\uc11c\ub294 \uac1c\ubc1c \ud658\uacbd\uc744 \uc124\uc815\ud574\uc57c \ud569\ub2c8\ub2e4. \uc774 \uacfc\uc815\uc5d0\uc11c \uc8fc\ub85c \uc0ac\uc6a9\ud558\ub294 \ub3c4\uad6c\ub294 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4:<\/p>\n \uac1c\ubc1c \ud658\uacbd\uc744 \uc124\uc815\ud55c \ud6c4, Android Studio\ub97c \uc2e4\ud589\ud558\uace0 \uc0c8\ub85c\uc6b4 \ud504\ub85c\uc81d\ud2b8\ub97c \uc0dd\uc131\ud569\ub2c8\ub2e4. \uc774 \uacfc\uc815\uc5d0\uc11c \ud544\uc694\ud55c \uc124\uc815\uc744 \ub9c8\uce5c \ud6c4, \uccab \ubc88\uc9f8 \uc571\uc744 \ub9cc\ub4e4\uc5b4 \ubcf4\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n<\/section>\n \uc790\ubc14\ub294 \uc548\ub4dc\ub85c\uc774\ub4dc\uc758 \uae30\ubcf8 \ud504\ub85c\uadf8\ub798\ubc0d \uc5b8\uc5b4\ub85c \uc0ac\uc6a9\ub418\uba70, \uc548\uc815\uc131\uacfc \uc774\uc2dd\uc131\uc73c\ub85c \uc778\ud574 \ub9ce\uc740 \uac1c\ubc1c\uc790\ub4e4\uc774 \uc120\ud638\ud569\ub2c8\ub2e4. \uc790\ubc14\ub97c \ud65c\uc6a9\ud55c \uc548\ub4dc\ub85c\uc774\ub4dc \uc571\uc758 \ud2b9\uc9d5\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4:<\/p>\n \uc790\ubc14\ub294 \uac1d\uccb4 \uc9c0\ud5a5 \ud504\ub85c\uadf8\ub798\ubc0d(OOP) \uc5b8\uc5b4\ub85c, \ud074\ub798\uc2a4\uc640 \uac1d\uccb4\ub97c \ud65c\uc6a9\ud558\uc5ec \ucf54\ub4dc\ub97c \uad6c\uc870\ud654\ud569\ub2c8\ub2e4. \uc774\ub294 \ucf54\ub4dc\uc758 \uc7ac\uc0ac\uc6a9\uc131\uc744 \ub192\uc774\uace0, \uc720\uc9c0\ubcf4\uc218\ub97c \uc6a9\uc774\ud558\uac8c \ub9cc\ub4ed\ub2c8\ub2e4.<\/p>\n \uc790\ubc14\ub85c \uac1c\ubc1c\ub41c \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc740 JVM(\uc790\ubc14 \uac00\uc0c1 \uba38\uc2e0)\uc5d0\uc11c \uc2e4\ud589\ub418\ubbc0\ub85c, \ub2e4\uc591\ud55c \ud50c\ub7ab\ud3fc\uc5d0\uc11c \uc0ac\uc6a9\ud560 \uc218 \uc788\ub294 \uc774\uc2dd\uc131\uc744 \uac16\ucd94\uace0 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n \uc790\ubc14\ub294 \ub2e4\uc591\ud55c \ub77c\uc774\ube0c\ub7ec\ub9ac\uc640 API\ub97c \uc81c\uacf5\ud558\uc5ec \uac1c\ubc1c\uc790\uac00 \ub354\uc6b1 \uc190\uc27d\uac8c \uae30\ub2a5\uc744 \uad6c\ud604\ud560 \uc218 \uc788\ub3c4\ub85d \ub3d5\uc2b5\ub2c8\ub2e4. \uc548\ub4dc\ub85c\uc774\ub4dc SDK\uc5d0\ub294 UI \ucef4\ud3ec\ub10c\ud2b8, \ub124\ud2b8\uc6cc\ud0b9, \ub370\uc774\ud130\ubca0\uc774\uc2a4 \uae30\ub2a5 \ub4f1\uc774 \ud3ec\ud568\ub418\uc5b4 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n \uc548\ub4dc\ub85c\uc774\ub4dc \uc571\uc740 \ube44\ub3d9\uae30 \uc791\uc5c5\uc744 \uc9c0\uc6d0\ud569\ub2c8\ub2e4. \uc790\ubc14\uc758 \uc2a4\ub808\ub4dc \ud074\ub798\uc2a4\ub97c \uc0ac\uc6a9\ud558\uba74 UI\uc640 \ubc31\uc5d4\ub4dc \uc791\uc5c5\uc744 \ub3d9\uc2dc\uc5d0 \uc218\ud589\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<\/section>\n \uc548\ub4dc\ub85c\uc774\ub4dc \uc571\uc740 \uc77c\ubc18\uc801\uc73c\ub85c Activity, Service, Broadcast Receiver, Content Provider\ub85c \uad6c\uc131\ub429\ub2c8\ub2e4.<\/p>\n Activity\ub294 \uc0ac\uc6a9\uc790 \uc778\ud130\ud398\uc774\uc2a4\ub97c \uc0dd\uc131\ud558\uba70, \uc571\uc758 \ud558\ub098\uc758 \ud654\uba74\uc744 \ub098\ud0c0\ub0c5\ub2c8\ub2e4. Activity\ub294 \uc0ac\uc6a9\uc790\uc640 \uc0c1\ud638\uc791\uc6a9\ud558\uae30 \uc704\ud55c \uc911\uc694\ud55c \ucef4\ud3ec\ub10c\ud2b8\uc785\ub2c8\ub2e4.<\/p>\n Service\ub294 \ubc31\uadf8\ub77c\uc6b4\ub4dc\uc5d0\uc11c \uc9c0\uc18d\uc801\uc73c\ub85c \uc2e4\ud589\ub418\ub294 \ucef4\ud3ec\ub10c\ud2b8\ub85c, \uc7a5\uc2dc\uac04 \uc2e4\ud589\uc774 \ud544\uc694\ud55c \uc791\uc5c5\uc5d0 \uc0ac\uc6a9\ub429\ub2c8\ub2e4.<\/p>\n Broadcast Receiver\ub294 \uc2dc\uc2a4\ud15c \ub610\ub294 \ub2e4\ub978 \uc571\uc5d0\uc11c \ubc1c\uc0dd\ud558\ub294 \uc774\ubca4\ud2b8\ub97c \uac10\uc9c0\ud558\ub294 \ucef4\ud3ec\ub10c\ud2b8\uc785\ub2c8\ub2e4.<\/p>\n Content Provider\ub294 \uc571 \uac04\uc758 \ub370\uc774\ud130 \uacf5\uc720\ub97c \uc704\ud55c \uba54\ucee4\ub2c8\uc998\uc744 \uc81c\uacf5\ud569\ub2c8\ub2e4.<\/p>\n<\/section>\n \uc774\uc81c \uc790\ubc14\ub97c \ud65c\uc6a9\ud558\uc5ec \uac04\ub2e8\ud55c \uc548\ub4dc\ub85c\uc774\ub4dc \uc571\uc744 \ub9cc\ub4e4\uc5b4 \ubcf4\uaca0\uc2b5\ub2c8\ub2e4. \uc774 \uc571\uc740 \uc0ac\uc6a9\uc790\ub85c\ubd80\ud130 \uc785\ub825\uac12\uc744 \ubc1b\uc544 \ucd9c\ub825\ud558\ub294 \uae30\ub2a5\uc744 \uac00\uc9c0\uace0 \uc788\uc2b5\ub2c8\ub2e4. \uc544\ub798\ub294 \uadf8 \uacfc\uc815\uc785\ub2c8\ub2e4.<\/p>\n \uc774\uc81c XML \ud30c\uc77c\uc744 \ud1b5\ud574 \uc0ac\uc6a9\uc790 \uc778\ud130\ud398\uc774\uc2a4\ub97c \uc0dd\uc131\ud558\uaca0\uc2b5\ub2c8\ub2e4. res\/layout\/activity_main.xml \ud30c\uc77c\uc744 \uc544\ub798\uc640 \uac19\uc774 \uc218\uc815\ud569\ub2c8\ub2e4.<\/p>\n \uc774\uc81c MainActivity.java \ud30c\uc77c\uc5d0\uc11c \uc0ac\uc6a9\uc790\uc758 \uc785\ub825\uc744 \ucc98\ub9ac\ud558\uace0 \uacb0\uacfc\ub97c \ubcf4\uc5ec\uc8fc\ub294 \ucf54\ub4dc\ub97c \uc791\uc131\ud558\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n \ucf54\ub4dc\ub97c \uc791\uc131\ud55c \ud6c4, Android Studio\uc5d0\uc11c \uc571\uc744 \uc2e4\ud589\ud574 \ubcf4\uc138\uc694. \uc5d0\ubbac\ub808\uc774\ud130\ub098 \uc2e4\uc81c \uc548\ub4dc\ub85c\uc774\ub4dc \uae30\uae30\ub97c \uc5f0\uacb0\ud558\uc5ec \uc571\uc744 \ud14c\uc2a4\ud2b8\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<\/section>\n \uc571 \uac1c\ubc1c\uc774 \uc644\ub8cc\ub418\uba74, Google Play Store\uc5d0 \ubc30\ud3ec\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. App Bundle \ub610\ub294 APK \ud30c\uc77c\uc744 \uc0dd\uc131\ud558\uc5ec \uc5c5\ub85c\ub4dc\ud558\uba74 \ub429\ub2c8\ub2e4. \uc774 \uacfc\uc815\uc5d0\uc11c \uc571\uc758 \uc544\uc774\ucf58, \uc124\uba85, \uc2a4\ud06c\ub9b0\uc0f7 \ub4f1\uc744 \uc124\uc815\ud574\uc57c \ud569\ub2c8\ub2e4.<\/p>\n<\/section>\n \uc790\ubc14\ub97c \ud65c\uc6a9\ud55c \uc548\ub4dc\ub85c\uc774\ub4dc \uc571 \uac1c\ubc1c\uc740 \ub9e4\ub825\uc801\uc774\uace0 \ub3c4\uc804\uc801\uc778 \uacbd\ud5d8\uc785\ub2c8\ub2e4. \uc774\ubc88 \uac15\uc88c\ub97c \ud1b5\ud574 \uae30\ubcf8\uc801\uc778 \uac1c\ubc1c \uacfc\uc815\uacfc \uc2e4\uc2b5\uc744 \ud1b5\ud574 \uc548\ub4dc\ub85c\uc774\ub4dc \uc571 \uac1c\ubc1c\uc758 \ud2b9\uc9d5\uc5d0 \ub300\ud574 \uc774\ud574\ud560 \uc218 \uc788\uc5c8\uae30\ub97c \ubc14\ub78d\ub2c8\ub2e4. \uc774 \uc9c0\uc2dd\uc744 \ubc14\ud0d5\uc73c\ub85c \ub2e4\uc74c \ub2e8\uacc4\ub85c \ub098\uc544\uac00 \ub354 \ub2e4\uc591\ud55c \uc571\uc744 \uac1c\ubc1c\ud574 \ubcf4\uc2dc\uae30 \ubc14\ub78d\ub2c8\ub2e4.<\/p>\n<\/section>\n2. \uc548\ub4dc\ub85c\uc774\ub4dc \uc571 \uac1c\ubc1c\uc758 \uc5ed\uc0ac<\/h2>\n
3. \uc548\ub4dc\ub85c\uc774\ub4dc \uc571 \uac1c\ubc1c \ud658\uacbd \uc124\uc815<\/h2>\n
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4. \uc790\ubc14\ub97c \ud65c\uc6a9\ud55c \uc548\ub4dc\ub85c\uc774\ub4dc \uc571\uc758 \ud2b9\uc9d5<\/h2>\n
4.1. \uac1d\uccb4 \uc9c0\ud5a5 \ud504\ub85c\uadf8\ub798\ubc0d<\/h3>\n
4.2. \uc774\uc2dd\uc131<\/h3>\n
4.3. \ud48d\ubd80\ud55c \ub77c\uc774\ube0c\ub7ec\ub9ac\uc640 API<\/h3>\n
4.4. \ub3d9\uc2dc\uc131<\/h3>\n
5. \uc548\ub4dc\ub85c\uc774\ub4dc \uc571 \uad6c\uc870 \uc774\ud574\ud558\uae30<\/h2>\n
5.1. Activity<\/h3>\n
5.2. Service<\/h3>\n
5.3. Broadcast Receiver<\/h3>\n
5.4. Content Provider<\/h3>\n
6. \uae30\ubcf8 \uc608\uc81c: \uccab \ubc88\uc9f8 \uc548\ub4dc\ub85c\uc774\ub4dc \uc571 \ub9cc\ub4e4\uae30<\/h2>\n
6.1. Android Studio\uc5d0\uc11c \ud504\ub85c\uc81d\ud2b8 \uc0dd\uc131<\/h3>\n
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6.2. UI \ub808\uc774\uc544\uc6c3 \uc791\uc131<\/h3>\n
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\n <?xml version=\"1.0\" encoding=\"utf-8\"?>\n <RelativeLayout xmlns:android=\"http:\/\/schemas.android.com\/apk\/res\/android\"\n android:layout_width=\"match_parent\"\n android:layout_height=\"match_parent\">\n\n <EditText\n android:id=\"@+id\/editText\"\n android:layout_width=\"match_parent\"\n android:layout_height=\"wrap_content\"\n android:hint=\"\uc785\ub825\ud558\uc138\uc694\" \/>\n\n <Button\n android:id=\"@+id\/button\"\n android:layout_width=\"wrap_content\"\n android:layout_height=\"wrap_content\"\n android:layout_below=\"@+id\/editText\"\n android:text=\"\uc81c\ucd9c\" \/>\n\n <TextView\n android:id=\"@+id\/textView\"\n android:layout_width=\"wrap_content\"\n android:layout_height=\"wrap_content\"\n android:layout_below=\"@+id\/button\"\n android:text=\"\uacb0\uacfc\" \/>\n\n <\/RelativeLayout>\n <\/code>\n <\/pre>\n6.3. MainActivity.java \ucf54\ub4dc \uc791\uc131<\/h3>\n
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\n package com.example.myfirstapp;\n\n import android.os.Bundle;\n import android.view.View;\n import android.widget.Button;\n import android.widget.EditText;\n import android.widget.TextView;\n import androidx.appcompat.app.AppCompatActivity;\n\n public class MainActivity extends AppCompatActivity {\n\n @Override\n protected void onCreate(Bundle savedInstanceState) {\n super.onCreate(savedInstanceState);\n setContentView(R.layout.activity_main);\n\n EditText editText = findViewById(R.id.editText);\n Button button = findViewById(R.id.button);\n TextView textView = findViewById(R.id.textView);\n \n button.setOnClickListener(new View.OnClickListener() {\n @Override\n public void onClick(View v) {\n String input = editText.getText().toString();\n textView.setText(\"\uc785\ub825\ud55c \uac12: \" + input);\n }\n });\n }\n }\n <\/code>\n <\/pre>\n6.4. \uc571 \uc2e4\ud589\ud558\uae30<\/h3>\n
7. \uc548\ub4dc\ub85c\uc774\ub4dc \uc571\uc758 \ubc30\ud3ec<\/h2>\n
8. \uacb0\ub860<\/h2>\n