\n\uba54\uc2e0\uc800 \uc571\uc740 \ud604\ub300 \ucee4\ubba4\ub2c8\ucf00\uc774\uc158\uc5d0\uc11c \ud544\uc218\uc801\uc778 \uc694\uc18c\uc785\ub2c8\ub2e4. \uc774\ubc88 \uac15\uc88c\uc5d0\uc11c\ub294 \uc548\ub4dc\ub85c\uc774\ub4dc \uc571\uc5d0\uc11c \uc0ac\uc6a9\ud560 \uc218 \uc788\ub294 \uc778\ud2b8\ub85c \ud654\uba74\uc744 \ub9cc\ub4dc\ub294 \ubc29\ubc95\uc5d0 \ub300\ud574 \uad6c\uccb4\uc801\uc73c\ub85c \uc54c\uc544\ubcf4\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n<\/header>\n\n1. \uc778\ud2b8\ub85c \ud654\uba74\uc758 \uc911\uc694\uc131<\/h2>\n
\uc778\ud2b8\ub85c \ud654\uba74\uc740 \uc0ac\uc6a9\uc790\uac00 \uc571\uc744 \uc2dc\uc791\ud560 \ub54c \ucc98\uc74c\uc73c\ub85c \ub9c8\uc8fc\ud558\ub294 \ud654\uba74\uc785\ub2c8\ub2e4. \ube0c\ub79c\ub4dc \uc774\ubbf8\uc9c0, \uc0ac\uc6a9 \ubc29\ubc95, \uae30\ub2a5 \ub4f1\uc744 \uac04\ub7b5\ud558\uac8c \uc18c\uac1c\ud558\ub294 \uc5ed\ud560\uc744 \ud569\ub2c8\ub2e4. \uc0ac\uc6a9\uc790\uc5d0\uac8c \uac15\ud55c \uccab \uc778\uc0c1\uc744 \ub0a8\uae38 \uc218 \uc788\uc73c\uba70, \uc571\uc5d0 \ub300\ud55c \uc2e0\ub8b0\uac10\uc744 \ud615\uc131\ud558\ub294 \ub370 \ud070 \ub3c4\uc6c0\uc774 \ub429\ub2c8\ub2e4. \ub610\ud55c, \uc778\ud2b8\ub85c \ud654\uba74\uc740 \uc571\uc744 \ub85c\ub4dc\ud558\ub294 \ub3d9\uc548\uc758 \ub300\uae30 \uc2dc\uac04\uc744 \uc720\uc6a9\ud558\uac8c \ud65c\uc6a9\ud558\ub294 \ubc29\ubc95\uc774\uae30\ub3c4 \ud569\ub2c8\ub2e4.<\/p>\n<\/section>\n\n2. \ud504\ub85c\uc81d\ud2b8 \uc900\ube44\ud558\uae30<\/h2>\n
\uc548\ub4dc\ub85c\uc774\ub4dc \uc2a4\ud29c\ub514\uc624\ub97c \uc774\uc6a9\ud574\uc11c \uc0c8 \ud504\ub85c\uc81d\ud2b8\ub97c \uc0dd\uc131\ud569\ub2c8\ub2e4. \ub2e4\uc74c\uacfc \uac19\uc740 \uc124\uc815\uc744 \ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4:<\/p>\n
\n- \ud504\ub85c\uc81d\ud2b8 \uc774\ub984: MessengerApp<\/li>\n
- \ud328\ud0a4\uc9c0 \uc774\ub984: com.example.messengerapp<\/li>\n
- \uc5b8\uc5b4: Java<\/li>\n
- \ucd5c\uc18c API \ub808\ubca8: API 21 (Lollipop)<\/li>\n<\/ul>\n
\uc704\uc758 \uc124\uc815\uc73c\ub85c \uc0c8 \uc548\ub4dc\ub85c\uc774\ub4dc \ud504\ub85c\uc81d\ud2b8\ub97c \uc0dd\uc131\ud558\uba74, \uae30\ubcf8\uc801\uc73c\ub85c MainActivity.java\uc640 activity_main.xml \ud30c\uc77c\uc774 \uc0dd\uc131\ub429\ub2c8\ub2e4.<\/p>\n<\/section>\n\n3. \uc778\ud2b8\ub85c \ud654\uba74 \ub514\uc790\uc778\ud558\uae30<\/h2>\n
\uc778\ud2b8\ub85c \ud654\uba74\uc758 \ub514\uc790\uc778\uc740 \uc0ac\uc6a9\uc790 \uacbd\ud5d8\uc744 \ud5a5\uc0c1\uc2dc\ud0ac \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc6b0\ub9ac\ub294 \uac04\ub2e8\ud558\uac8c \ubc30\uacbd \uc774\ubbf8\uc9c0\uc640 \ub85c\uace0\ub97c \uc0ac\uc6a9\ud558\uc5ec \uc778\ud2b8\ub85c \ud654\uba74\uc744 \ub514\uc790\uc778\ud560 \uac83\uc785\ub2c8\ub2e4.<\/p>\n
3.1 \ub808\uc774\uc544\uc6c3 \ud30c\uc77c \ub9cc\ub4e4\uae30<\/h3>\n
res\/layout \ud3f4\ub354\uc5d0 intro_activity.xml \ud30c\uc77c\uc744 \uc0dd\uc131\ud558\uace0 \ub2e4\uc74c\uacfc \uac19\uc774 \uc791\uc131\ud569\ub2c8\ub2e4:<\/p>\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 <ImageView\n android:id=\"@+id\/logo\"\n android:layout_width=\"wrap_content\"\n android:layout_height=\"wrap_content\"\n android:layout_centerInParent=\"true\"\n android:src=\"@drawable\/logo\" \/>\n\n<\/RelativeLayout><\/code><\/pre>\n\uc704\uc758 XML \ucf54\ub4dc\ub294 \ud654\uba74 \uc911\uc559\uc5d0 \ub85c\uace0\ub97c \ubc30\uce58\ud558\uac8c \ub429\ub2c8\ub2e4. logo \uc774\ubbf8\uc9c0\ub294 res\/drawable \ud3f4\ub354\uc5d0 \ucd94\uac00\ub418\uc5b4\uc57c \ud569\ub2c8\ub2e4.<\/p>\n<\/section>\n\n4. \uc778\ud2b8\ub85c \ud654\uba74 Activity \ub9cc\ub4e4\uae30<\/h2>\n
\uc774\uc81c \uc778\ud2b8\ub85c \ud654\uba74\uc744 \ud45c\uc2dc\ud560 Activity\ub97c \ub9cc\ub4e4\uaca0\uc2b5\ub2c8\ub2e4. \uc0c8\ub85c\uc6b4 Java \ud30c\uc77c\uc778 IntroActivity.java\ub97c \uc0dd\uc131\ud558\uace0 \ub2e4\uc74c \ub0b4\uc6a9\uc744 \uc791\uc131\ud569\ub2c8\ub2e4:<\/p>\n
package com.example.messengerapp;\n\nimport android.content.Intent;\nimport android.os.Bundle;\nimport android.os.Handler;\nimport androidx.appcompat.app.AppCompatActivity;\n\npublic class IntroActivity extends AppCompatActivity {\n private static final int SPLASH_TIME_OUT = 3000; \/\/ 3\ucd08\n\n @Override\n protected void onCreate(Bundle savedInstanceState) {\n super.onCreate(savedInstanceState);\n setContentView(R.layout.intro_activity);\n\n new Handler().postDelayed(new Runnable() {\n @Override\n public void run() {\n Intent mainIntent = new Intent(IntroActivity.this, MainActivity.class);\n startActivity(mainIntent);\n finish(); \/\/ \uc778\ud2b8\ub85c \ud654\uba74\uc744 \uc885\ub8cc\n }\n }, SPLASH_TIME_OUT);\n }\n}<\/code><\/pre>\n\uc704 \ucf54\ub4dc\uc5d0\uc11c\ub294 3\ucd08 \ub300\uae30 \ud6c4 MainActivity\ub85c \ub118\uc5b4\uac00\ub294 \uc778\ud2b8\ub85c \ud654\uba74 \uae30\ub2a5\uc744 \uad6c\ud604\ud588\uc2b5\ub2c8\ub2e4.<\/p>\n<\/section>\n\n5. AndroidManifest.xml \uc218\uc815\ud558\uae30<\/h2>\n
\uc548\ub4dc\ub85c\uc774\ub4dcManifest.xml \ud30c\uc77c\uc744 \uc5f4\uace0 IntroActivity\ub97c \ub4f1\ub85d\ud569\ub2c8\ub2e4. \ub2e4\uc74c\uacfc \uac19\uc774 \uc218\uc815\ud569\ub2c8\ub2e4:<\/p>\n
<application\n ... >\n\n <activity android:name=\".IntroActivity\">\n <intent-filter>\n <action android:name=\"android.intent.action.MAIN\" \/>\n <category android:name=\"android.intent.category.LAUNCHER\" \/>\n <\/intent-filter>\n <\/activity>\n\n <activity android:name=\".MainActivity\"><\/activity>\n\n <\/application><\/code><\/pre>\n\uc5ec\uae30\uc11c IntroActivity\ub294 \uc571\uc758 \uc2dc\uc791 \ud654\uba74\uc774 \ub418\uc5b4\uc57c \ud558\ubbc0\ub85c MAIN\uacfc LAUNCHER \uc561\uc158\uc744 \uc124\uc815\ud569\ub2c8\ub2e4.<\/p>\n<\/section>\n\n6. \uc571 \uc2e4\ud589 \ubc0f \ud14c\uc2a4\ud2b8<\/h2>\n
\uc774\uc81c \ubaa8\ub4e0 \uc124\uc815\uc774 \ub05d\ub0ac\uc2b5\ub2c8\ub2e4. \uc571\uc744 \uc2e4\ud589\ud558\uba74 \uc778\ud2b8\ub85c \ud654\uba74\uc774 3\ucd08 \ub3d9\uc548 \ud45c\uc2dc\ub41c \ud6c4 MainActivity\ub85c \uc804\ud658\ub418\ub294 \uac83\uc744 \ud655\uc778\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc571\uc774 \uc81c\ub300\ub85c \uc791\ub3d9\ud558\ub294\uc9c0 \ud655\uc778\ud558\uc138\uc694.<\/p>\n
\ud639\uc2dc \ubb38\uc81c\uc810\uc774 \ubc1c\uc0dd\ud558\uba74, Android Studio\uc758 Logcat\uc5d0\uc11c \uc5d0\ub7ec \uba54\uc2dc\uc9c0\ub97c \ud655\uc778\ud558\uc5ec \ubb38\uc81c\ub97c \ud574\uacb0\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<\/section>\n\n7. \ucd94\uac00 \uae30\ub2a5 \uad6c\ud604\ud558\uae30<\/h2>\n
\uc778\ud2b8\ub85c \ud654\uba74\uc5d0 \ucd94\uac00 \uae30\ub2a5\uc744 \uad6c\ud604\ud558\uace0 \uc2f6\ub2e4\uba74, \ub2e4\uc74c\uacfc \uac19\uc740 \uc544\uc774\ub514\uc5b4\ub97c \uace0\ub824\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4:<\/p>\n
\n- \uc560\ub2c8\uba54\uc774\uc158 \ud6a8\uacfc \ucd94\uac00<\/li>\n
- \uc571 \ub85c\uace0\uc5d0 \ub2e4\uc591\ud55c \uc804\ud658 \ud6a8\uacfc \uc801\uc6a9<\/li>\n
- \ub85c\uace0 \uc544\ub798 \uac04\ub2e8\ud55c \uc2ac\ub85c\uac74 \ucd94\uac00<\/li>\n<\/ul>\n
\uc608\ub97c \ub4e4\uc5b4, \ub85c\uace0\uc5d0 \uc560\ub2c8\uba54\uc774\uc158 \ud6a8\uacfc\ub97c \ucd94\uac00\ud558\uace0 \uc2f6\ub2e4\uba74, Animation \ud074\ub798\uc2a4\ub97c \uc0ac\uc6a9\ud558\uc5ec \uac04\ub2e8\ud55c \ud398\uc774\ub4dc \uc778 \ud6a8\uacfc\ub97c \uc904 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n
ImageView logo = findViewById(R.id.logo);\nAnimation fadeIn = AnimationUtils.loadAnimation(this, R.anim.fade_in);\nlogo.startAnimation(fadeIn);<\/code><\/pre>\n<\/section>\n