\ube44\ubc00\ubc88\ud638 \uac80\uc99d \ubc0f \uc0ac\uc6a9\uc790 \ud53c\ub4dc\ubc31 \ucc98\ub9ac<\/li>\n<\/ul>\n1. \uac1c\ubc1c \ud658\uacbd \uc124\uc815\ud558\uae30<\/h2>\n
\uc548\ub4dc\ub85c\uc774\ub4dc \uc571 \uac1c\ubc1c\uc744 \uc704\ud574 \uac00\uc7a5 \uba3c\uc800 \ud574\uc57c \ud560 \uc77c\uc740 \uac1c\ubc1c \ud658\uacbd\uc744 \uc124\uc815\ud558\ub294 \uac83\uc785\ub2c8\ub2e4. \uc548\ub4dc\ub85c\uc774\ub4dc \uc2a4\ud29c\ub514\uc624\ub97c \ub2e4\uc6b4\ub85c\ub4dc\ud558\uace0 \uc124\uce58\ud558\uc5ec \uae30\ubcf8\uc801\uc778 \uac1c\ubc1c \ud658\uacbd\uc744 \uad6c\ucd95\ud569\ub2c8\ub2e4. \uc124\uce58 \ud6c4 \uc0c8\ub85c\uc6b4 \ud504\ub85c\uc81d\ud2b8\ub97c \uc0dd\uc131\ud569\ub2c8\ub2e4. \ud504\ub85c\uc81d\ud2b8\uc758 \uc774\ub984\uc744 ‘PasswordCheckApp’\uc73c\ub85c \ud558\uace0, \uae30\ubcf8 \ud15c\ud50c\ub9bf\uc740 ‘Empty Activity’\ub97c \uc120\ud0dd\ud569\ub2c8\ub2e4.<\/p>\n
2. XML \ub808\uc774\uc544\uc6c3 \uad6c\uc131<\/h2>\n
\ud504\ub85c\uc81d\ud2b8\ub97c \uc0dd\uc131\ud55c \ud6c4, ‘res\/layout’ \ud3f4\ub354 \ub0b4\uc5d0 \uc788\ub294 ‘activity_main.xml’ \ud30c\uc77c\uc744 \uc218\uc815\ud558\uc5ec \uc0ac\uc6a9\uc790 \uc778\ud130\ud398\uc774\uc2a4(UI)\ub97c \uc124\uacc4\ud569\ub2c8\ub2e4.<\/p>\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 android:padding=\"16dp\">\n\n <TextView\n android:id=\"@+id\/textViewTitle\"\n android:layout_width=\"wrap_content\"\n android:layout_height=\"wrap_content\"\n android:text=\"\ube44\ubc00\ubc88\ud638 \ud655\uc778\"\n android:textSize=\"24sp\"\n android:layout_centerHorizontal=\"true\" \n android:layout_marginBottom=\"24dp\"\/>\n\n <EditText\n android:id=\"@+id\/editTextPassword\"\n android:layout_width=\"match_parent\"\n android:layout_height=\"wrap_content\"\n android:hint=\"\ube44\ubc00\ubc88\ud638\ub97c \uc785\ub825\ud558\uc138\uc694\"\n android:inputType=\"textPassword\"\/>\n\n <Button\n android:id=\"@+id\/buttonConfirm\"\n android:layout_width=\"wrap_content\"\n android:layout_height=\"wrap_content\"\n android:text=\"\ud655\uc778\"\n android:layout_below=\"@id\/editTextPassword\"\n android:layout_centerHorizontal=\"true\"\n android:layout_marginTop=\"16dp\"\/>\n\n <TextView\n android:id=\"@+id\/textViewResult\"\n android:layout_width=\"wrap_content\"\n android:layout_height=\"wrap_content\"\n android:layout_below=\"@id\/buttonConfirm\"\n android:layout_centerHorizontal=\"true\"\n android:layout_marginTop=\"16dp\"\n android:textSize=\"16sp\"\/>\n<\/RelativeLayout>\n<\/code><\/pre>\n\uc704\uc758 XML \ucf54\ub4dc\ub97c \ud1b5\ud574 \ud654\uba74\uc5d0\ub294 \uc81c\ubaa9, \ube44\ubc00\ubc88\ud638 \uc785\ub825\ub780, \ud655\uc778 \ubc84\ud2bc, \uadf8\ub9ac\uace0 \uacb0\uacfc\ub97c \ubcf4\uc5ec\uc904 TextView\uac00 \uc0dd\uc131\ub429\ub2c8\ub2e4. \uc774\ub7ec\ud55c \ub808\uc774\uc544\uc6c3\uc744 \uc0ac\uc6a9\ud558\uc5ec \uc0ac\uc6a9\uc790\uac00 \ube44\ubc00\ubc88\ud638\ub97c \uc785\ub825\ud558\uace0 \uacb0\uacfc\ub97c \ud655\uc778\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n
3. \uba54\uc778 \uc561\ud2f0\ube44\ud2f0 \uad6c\ud604<\/h2>\n
XML \ub808\uc774\uc544\uc6c3\uc744 \uad6c\uc131\ud55c \ud6c4, \uc774\uc81c Java \ud30c\uc77c\uc5d0\uc11c UI\uc640 \ub85c\uc9c1\uc744 \uc5f0\uacb0\ud558\ub3c4\ub85d \ud558\uaca0\uc2b5\ub2c8\ub2e4. ‘MainActivity.java’ \ud30c\uc77c\uc744 \uc5f4\uace0, \ub2e4\uc74c\uacfc \uac19\uc774 \ucf54\ub4dc\ub97c \uc791\uc131\ud569\ub2c8\ub2e4:<\/p>\n
package com.example.passwordcheckapp;\n\nimport androidx.appcompat.app.AppCompatActivity;\nimport android.os.Bundle;\nimport android.view.View;\nimport android.widget.Button;\nimport android.widget.EditText;\nimport android.widget.TextView;\nimport android.widget.Toast;\n\npublic class MainActivity extends AppCompatActivity {\n\n private EditText editTextPassword;\n private Button buttonConfirm;\n private TextView textViewResult;\n\n private static final String CORRECT_PASSWORD = \"mypassword\"; \/\/ \uc815\ub2f5 \ube44\ubc00\ubc88\ud638\n\n @Override\n protected void onCreate(Bundle savedInstanceState) {\n super.onCreate(savedInstanceState);\n setContentView(R.layout.activity_main);\n\n editTextPassword = findViewById(R.id.editTextPassword);\n buttonConfirm = findViewById(R.id.buttonConfirm);\n textViewResult = findViewById(R.id.textViewResult);\n\n buttonConfirm.setOnClickListener(new View.OnClickListener() {\n @Override\n public void onClick(View v) {\n checkPassword();\n }\n });\n }\n\n private void checkPassword() {\n String inputPassword = editTextPassword.getText().toString();\n\n if (inputPassword.isEmpty()) {\n Toast.makeText(this, \"\ube44\ubc00\ubc88\ud638\ub97c \uc785\ub825\ud558\uc138\uc694.\", Toast.LENGTH_SHORT).show();\n return;\n }\n\n if (inputPassword.equals(CORRECT_PASSWORD)) {\n textViewResult.setText(\"\ube44\ubc00\ubc88\ud638\uac00 \uc77c\uce58\ud569\ub2c8\ub2e4.\");\n } else {\n textViewResult.setText(\"\ube44\ubc00\ubc88\ud638\uac00 \ud2c0\ub838\uc2b5\ub2c8\ub2e4.\");\n }\n }\n}\n<\/code><\/pre>\n\uc704\uc758 Java \ucf54\ub4dc\uc5d0\uc11c\ub294 \uae30\ubcf8\uc801\uc778 \ube44\ubc00\ubc88\ud638 \ud655\uc778 \ub85c\uc9c1\uc744 \uad6c\ud604\ud588\uc2b5\ub2c8\ub2e4. \uc0ac\uc6a9\uc790\uac00 \uc785\ub825\ud55c \ube44\ubc00\ubc88\ud638\uc640 \uc815\ub2f5 \ube44\ubc00\ubc88\ud638\ub97c \ube44\uad50\ud558\uc5ec \uacb0\uacfc\ub97c TextView\uc5d0 \ucd9c\ub825\ud569\ub2c8\ub2e4. \ub9cc\uc57d \ube44\ubc00\ubc88\ud638\uac00 \ud2c0\ub9b4 \uacbd\uc6b0 \uc0ac\uc6a9\uc790\uc5d0\uac8c Toast \uba54\uc2dc\uc9c0\ub85c \uc54c\ub9bc\uc744 \uc81c\uacf5\ud569\ub2c8\ub2e4.<\/p>\n
4. \ud504\ub85c\uc81d\ud2b8 \uc2e4\ud589 \ubc0f \ud14c\uc2a4\ud2b8<\/h2>\n
\ucf54\ub4dc\ub97c \uc791\uc131\ud558\uace0 \ub098\uba74, Android Studio\uc758 \uc5d0\ubbac\ub808\uc774\ud130 \ub610\ub294 \uc2e4\uc81c \ub514\ubc14\uc774\uc2a4\uc5d0\uc11c \uc571\uc744 \uc2e4\ud589\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc0ac\uc6a9\uc790\uac00 \ube44\ubc00\ubc88\ud638\ub97c \uc785\ub825\ud558\uace0 ‘\ud655\uc778’ \ubc84\ud2bc\uc744 \ud074\ub9ad\ud558\uba74, \ube44\ubc00\ubc88\ud638\uac00 \uc77c\uce58\ud558\ub294\uc9c0 \ud655\uc778\ub418\uba70, \uacb0\uacfc\uac00 \ud654\uba74\uc5d0 \ud45c\uc2dc\ub429\ub2c8\ub2e4.<\/p>\n
5. \ucd94\uac00 \uae30\ub2a5 \uad6c\ud604<\/h2>\n
\ube44\ubc00\ubc88\ud638 \ud655\uc778 \ud654\uba74\uc740 \uae30\ubcf8\uc801\uc778 \uae30\ub2a5\uc744 \uc81c\uacf5\ud558\uc9c0\ub9cc, \ub2e4\uc591\ud55c \uc0ac\uc6a9\uc790 \uacbd\ud5d8\uc744 \uac1c\uc120\ud558\uae30 \uc704\ud55c \ucd94\uac00 \uae30\ub2a5\uc744 \uad6c\ud604\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4, \ube44\ubc00\ubc88\ud638 \uc785\ub825\ub780\uc5d0 \uc785\ub825\ud55c \ub0b4\uc6a9\uc744 \ubcf4\uc5ec\uc8fc\uac70\ub098 \uc228\uae38 \uc218 \uc788\ub294 \uae30\ub2a5, \ub610\ub294 \ube44\ubc00\ubc88\ud638 \uc785\ub825\uc744 \uc704\ud55c \ud328\ud134 \uc7a0\uae08 \ubc29\uc2dd \ub4f1\uc744 \ucd94\uac00\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n
\uc785\ub825 \ube44\ubc00\ubc88\ud638 \uc228\uae30\uae30\/\ubcf4\uc5ec\uc8fc\uae30 \uae30\ub2a5 \ucd94\uac00<\/h3>\n
\uc0ac\uc6a9\uc790\uac00 \uc785\ub825\ud55c \ube44\ubc00\ubc88\ud638\ub97c \uc228\uae38 \uc218 \uc788\ub294 \uae30\ub2a5\uc744 \ucd94\uac00\ud574\ubcf4\uaca0\uc2b5\ub2c8\ub2e4. \uc774\ub97c \uc704\ud574 \uba3c\uc800 ‘EditText’\uc5d0 \uc0c1\uc751\ud558\ub294 \uc544\uc774\ucf58\uc744 \ucd94\uac00\ud558\uace0, \ud074\ub9ad \uc774\ubca4\ud2b8\ub97c \ucc98\ub9ac\ud558\uc5ec \ube44\ubc00\ubc88\ud638\ub97c \uc228\uae30\uac70\ub098 \ubcf4\uc774\uac8c \ud558\ub294 \uae30\ub2a5\uc744 \uad6c\ud604\ud569\ub2c8\ub2e4.<\/p>\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 android:padding=\"16dp\">\n\n <TextView\n android:id=\"@+id\/textViewTitle\"\n android:layout_width=\"wrap_content\"\n android:layout_height=\"wrap_content\"\n android:text=\"\ube44\ubc00\ubc88\ud638 \ud655\uc778\"\n android:textSize=\"24sp\"\n android:layout_centerHorizontal=\"true\"\n android:layout_marginBottom=\"24dp\"\/>\n\n <EditText\n android:id=\"@+id\/editTextPassword\"\n android:layout_width=\"match_parent\"\n android:layout_height=\"wrap_content\"\n android:hint=\"\ube44\ubc00\ubc88\ud638\ub97c \uc785\ub825\ud558\uc138\uc694\"\n android:inputType=\"textPassword\"\/>\n\n <ImageView\n android:id=\"@+id\/imageViewTogglePassword\"\n android:layout_width=\"wrap_content\"\n android:layout_height=\"wrap_content\"\n android:layout_toRightOf=\"@id\/editTextPassword\"\n android:layout_marginStart=\"8dp\"\n android:src=\"@drawable\/ic_visibility_off\"\/>\n\n <Button\n android:id=\"@+id\/buttonConfirm\"\n android:layout_width=\"wrap_content\"\n android:layout_height=\"wrap_content\"\n android:text=\"\ud655\uc778\"\n android:layout_below=\"@id\/editTextPassword\"\n android:layout_centerHorizontal=\"true\"\n android:layout_marginTop=\"16dp\"\/>\n\n <TextView\n android:id=\"@+id\/textViewResult\"\n android:layout_width=\"wrap_content\"\n android:layout_height=\"wrap_content\"\n android:layout_below=\"@id\/buttonConfirm\"\n android:layout_centerHorizontal=\"true\"\n android:layout_marginTop=\"16dp\"\n android:textSize=\"16sp\"\/>\n<\/RelativeLayout>\n<\/code><\/pre>\nJava \ucf54\ub4dc \ub610\ud55c \uc218\uc815\ud558\uc5ec \ube44\ubc00\ubc88\ud638 \uc2dc\uac01\ud654 \ud1a0\uae00 \uae30\ub2a5\uc744 \ucd94\uac00\ud574\uc57c \ud569\ub2c8\ub2e4. ‘MainActivity.java’\uc5d0 \ub2e4\uc74c \ucf54\ub4dc\ub97c \ucd94\uac00\ud558\uc138\uc694:<\/p>\n
imageViewTogglePassword = findViewById(R.id.imageViewTogglePassword);\n\n imageViewTogglePassword.setOnClickListener(new View.OnClickListener() {\n boolean isPasswordVisible = false;\n\n @Override\n public void onClick(View v) {\n if (isPasswordVisible) {\n editTextPassword.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_PASSWORD);\n imageViewTogglePassword.setImageResource(R.drawable.ic_visibility_off);\n } else {\n editTextPassword.setInputType(InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);\n imageViewTogglePassword.setImageResource(R.drawable.ic_visibility);\n }\n isPasswordVisible = !isPasswordVisible;\n editTextPassword.setSelection(editTextPassword.length());\n }\n });<\/code><\/pre>\n\uc704\uc758 \ucf54\ub4dc\ub97c \ud1b5\ud574 \uc0ac\uc6a9\uc790\uac00 \ube44\ubc00\ubc88\ud638\ub97c \ub354 \ud3b8\ub9ac\ud558\uac8c \uc785\ub825\ud560 \uc218 \uc788\ub3c4\ub85d \uc124\uc815\ud588\uc2b5\ub2c8\ub2e4. \uc774\uc81c \uc544\uc774\ucf58\uc744 \ud074\ub9ad\ud558\uba74 \ube44\ubc00\ubc88\ud638\ub97c \ubcf4\uc774\uac8c \ud558\uac70\ub098 \uc228\uae38 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n
\uacb0\ub860<\/h2>\n
\uc774\ubc88 \uac15\uc88c\ub97c \ud1b5\ud574 \uc790\ubc14\uc640 \uc548\ub4dc\ub85c\uc774\ub4dc\ub97c \uc0ac\uc6a9\ud558\uc5ec \ub2e8\uc21c\ud55c \ube44\ubc00\ubc88\ud638 \ud655\uc778 \ud654\uba74\uc744 \ub9cc\ub4dc\ub294 \uacfc\uc815\uc744 \ubc30\uc6e0\uc2b5\ub2c8\ub2e4. \uae30\ubcf8\uc801\uc778 UI \uad6c\uc131 \ubc0f \uc0ac\uc6a9\uc790 \uc0c1\ud638\uc791\uc6a9\uc744 \ucc98\ub9ac\ud558\ub294 \ubc29\ubc95\uc5d0 \ub300\ud574 \uc775\ud614\ub358 \ub9cc\ud07c, \uc55e\uc73c\ub85c \ub354 \ubcf5\uc7a1\ud55c \uae30\ub2a5\uc744 \ucd94\uac00\ud558\uc5ec \uc571\uc744 \ud655\uc7a5\ud560 \uc218 \uc788\ub294 \uc88b\uc740 \uae30\ud68c\uac00 \ub420 \uac83\uc785\ub2c8\ub2e4. \uc2e4\uc2b5 \ud6c4 \ucd94\uac00\uc801\uc778 \uae30\ub2a5 \ubc0f \uac1c\uc120\uc810\uc744 \uc0dd\uac01\ud574\ubcf4\uace0, \uc9c1\uc811 \uc2dc\ub3c4\ud574\ubcf4\ub294 \uac83\ub3c4 \uc88b\uc740 \ud559\uc2b5 \ubc29\ubc95\uc785\ub2c8\ub2e4.<\/p>\n
\ucd94\uac00\uc801\uc73c\ub85c \uc548\ub4dc\ub85c\uc774\ub4dc \uac1c\ubc1c\uc5d0 \ub300\ud55c \ub354 \ub9ce\uc740 \uc790\ub8cc \ubc0f \ucee4\ubba4\ub2c8\ud2f0\ub3c4 \ud655\uc778\ud574\ubcf4\uc2dc\uace0, \ub2e4\uc591\ud55c \ud504\ub85c\uc81d\ud2b8\uc5d0 \ub3c4\uc804\ud574 \ubcf4\uc138\uc694. \uc5ec\ub7ec\ubd84\uc758 \uc548\ub4dc\ub85c\uc774\ub4dc \uac1c\ubc1c \uc5ec\uc815\uc5d0 \ub3c4\uc6c0\uc774 \ub418\uae38 \ubc14\ub78d\ub2c8\ub2e4!<\/p>\n