自定义色彩xml文件《android:background="@color/white" [create file color.xml at res/values/]》


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

<resources>

<color name="white">#FFFFFF</color><!--白色 -->

<color name="ivory">#FFFFF0</color><!--象牙色 -->

<color name="lightyellow">#FFFFE0</color><!--亮黄色 -->

<color name="yellow">#FFFF00</color><!--黄色 -->

<color name="snow">#FFFAFA</color><!--雪白色 -->

<color name="floralwhite">#FFFAF0</color><!--花白色 -->

<color name="lemonchiffon">#FFFACD</color><!--柠檬绸色 -->

<color name="cornsilk">#FFF8DC</color><!--米绸色 -->

<color name="seashell">#FFF5EE</color><!--海贝色 -->

<color name="lavenderblush">#FFF0F5</color><!--淡紫红 -->

<color name="papayawhip">#FFEFD5</color><!--番木色 -->

<color name="blanchedalmond">#FFEBCD</color><!--白杏色 -->

<color name="mistyrose">#FFE4E1</color><!--浅玫瑰色 -->

<color name="bisque">#FFE4C4</color><!--桔黄色 -->

<color name="moccasin">#FFE4B5</color><!--鹿皮色 -->

<color name="navajowhite">#FFDEAD</color><!--纳瓦白 -->

<color name="peachpuff">#FFDAB9</color><!--桃色 -->

<color name="gold">#FFD700</color><!--金色 -->

<color name="pink">#FFC0CB</color><!--粉红色 -->

<color name="lightpink">#FFB6C1</color><!--亮粉红色 -->

<color name="orange">#FFA500</color><!--橙色 -->

<color name="lightsalmon">#FFA07A</color><!--亮肉色 -->

<color name="darkorange">#FF8C00</color><!--暗桔黄色 -->

<color name="coral">#FF7F50</color><!--珊瑚色 -->

<color name="hotpink">#FF69B4</color><!--热粉红色 -->

<color name="tomato">#FF6347</color><!--西红柿色 -->

<color name="orangered">#FF4500</color><!--红橙色 -->

<color name="deeppink">#FF1493</color><!--深粉红色 -->

<color name="fuchsia">#FF00FF</color><!--紫红色 -->

<color name="magenta">#FF00FF</color><!--红紫色 -->

<color name="red">#FF0000</color><!--红色 -->

<color name="oldlace">#FDF5E6</color><!--老花色 -->

<color name="lightgoldenrodyellow">#FAFAD2</color><!--亮金黄色 -->

<color name="linen">#FAF0E6</color><!--亚麻色 -->

<color name="antiquewhite">#FAEBD7</color><!--古董白 -->

<color name="salmon">#FA8072</color><!--鲜肉色 -->

<color name="ghostwhite">#F8F8FF</color><!--幽灵白 -->

<color name="mintcream">#F5FFFA</color><!--薄荷色 -->

<color name="whitesmoke">#F5F5F5</color><!--烟白色 -->

<color name="beige">#F5F5DC</color><!--米色 -->

<color name="wheat">#F5DEB3</color><!--浅黄色 -->

<color name="sandybrown">#F4A460</color><!--沙褐色 -->

<color name="azure">#F0FFFF</color><!--天蓝色 -->

<color name="honeydew">#F0FFF0</color><!--蜜色 -->

<color name="aliceblue">#F0F8FF</color><!--艾利斯兰 -->

<color name="khaki">#F0E68C</color><!--黄褐色 -->

<color name="lightcoral">#F08080</color><!--亮珊瑚色 -->

<color name="palegoldenrod">#EEE8AA</color><!--苍麒麟色 -->

<color name="violet">#EE82EE</color><!--紫罗兰色 -->

<color name="darksalmon">#E9967A</color><!--暗肉色 -->

<color name="lavender">#E6E6FA</color><!--淡紫色 -->

<color name="lightcyan">#E0FFFF</color><!--亮青色 -->

<color name="burlywood">#DEB887</color><!--实木色 -->

<color name="plum">#DDA0DD</color><!--洋李色 -->

<color name="gainsboro">#DCDCDC</color><!--淡灰色 -->

<color name="crimson">#DC143C</color><!--暗深红色 -->

<color name="palevioletred">#DB7093</color><!--苍紫罗兰色-->

<color name="goldenrod">#DAA520</color><!--金麒麟色 -->

<color name="orchid">#DA70D6</color><!--淡紫色 -->

<color name="thistle">#D8BFD8</color><!--蓟色 -->

<color name="lightgray">#D3D3D3</color><!--亮灰色 -->

<color name="lightgrey">#D3D3D3</color><!--亮灰色 -->

<color name="tan">#D2B48C</color><!--茶色 -->

<color name="chocolate">#D2691E</color><!--巧可力色 -->

<color name="peru">#CD853F</color><!--秘鲁色 -->

<color name="indianred">#CD5C5C</color><!--印第安红 -->

<color name="mediumvioletred">#C71585</color><!--中紫罗兰色 -->

<color name="silver">#C0C0C0</color><!--银色 -->

<color name="darkkhaki">#BDB76B</color><!--暗黄褐色 -->

<color name="rosybrown">#BC8F8F</color><!--褐玫瑰红 -->

<color name="mediumorchid">#BA55D3</color><!--中粉紫色 -->

<color name="darkgoldenrod">#B8860B</color><!--暗金黄色 -->

<color name="firebrick">#B22222</color><!--火砖色 -->

<color name="powderblue">#B0E0E6</color><!--粉蓝色 -->

<color name="lightsteelblue">#B0C4DE</color><!--亮钢兰色-->

<color name="paleturquoise">#AFEEEE</color><!--苍宝石绿 -->

<color name="greenyellow">#ADFF2F</color><!--黄绿色 -->

<color name="lightblue">#ADD8E6</color><!--亮蓝色 -->

<color name="darkgray">#A9A9A9</color><!--暗灰色 -->

<color name="darkgrey">#A9A9A9</color><!--暗灰色 -->

<color name="brown">#A52A2A</color><!--褐色 -->

<color name="sienna">#A0522D</color><!--赭色 -->

<color name="darkorchid">#9932CC</color><!--暗紫色 -->

<color name="palegreen">#98FB98</color><!--苍绿色 -->

<color name="darkviolet">#9400D3</color><!--暗紫罗兰色 -->

<color name="mediumpurple">#9370DB</color><!--中紫色 -->

<color name="lightgreen">#90EE90</color><!--亮绿色 -->

<color name="darkseagreen">#8FBC8F</color><!--暗海兰色 -->

<color name="saddlebrown">#8B4513</color><!--重褐色 -->

<color name="darkmagenta">#8B008B</color><!--暗洋红 -->

<color name="darkred">#8B0000</color><!--暗红色 -->

<color name="blueviolet">#8A2BE2</color><!--紫罗兰蓝色 -->

<color name="lightskyblue">#87CEFA</color><!--亮天蓝色 -->

<color name="skyblue">#87CEEB</color><!--天蓝色 -->

<color name="gray">#808080</color><!--灰色 -->

<color name="grey">#808080</color><!--灰色 -->

<color name="olive">#808000</color><!--橄榄色 -->

<color name="purple">#800080</color><!--紫色 -->

<color name="maroon">#800000</color><!--粟色 -->

<color name="aquamarine">#7FFFD4</color><!--碧绿色 -->

<color name="chartreuse">#7FFF00</color><!--黄绿色 -->

<color name="lawngreen">#7CFC00</color><!--草绿色 -->

<color name="mediumslateblue">#7B68EE</color><!--中暗蓝色-->

<color name="lightslategray">#778899</color><!--亮蓝灰 -->

<color name="lightslategrey">#778899</color><!--亮蓝灰 -->

<color name="slategray">#708090</color><!--灰石色 -->

<color name="slategrey">#708090</color><!--灰石色 -->

<color name="olivedrab">#6B8E23</color><!--深绿褐色 -->

<color name="slateblue">#6A5ACD</color><!--石蓝色 -->

<color name="dimgray">#696969</color><!--暗灰色 -->

<color name="dimgrey">#696969</color><!--暗灰色 -->

<color name="mediumaquamarine">#66CDAA</color><!--中绿色-->

<color name="cornflowerblue">#6495ED</color><!--菊兰色 -->

<color name="cadetblue">#5F9EA0</color><!--军兰色 -->

<color name="darkolivegreen">#556B2F</color><!--暗橄榄绿 -->

<color name="indigo">#4B0082</color><!--靛青色 -->

<color name="mediumturquoise">#48D1CC</color><!--中绿宝石-->

<color name="darkslateblue">#483D8B</color><!--暗灰蓝色 -->

<color name="steelblue">#4682B4</color><!--钢兰色 -->

<color name="royalblue">#4169E1</color><!--皇家蓝 -->

<color name="turquoise">#40E0D0</color><!--青绿色 -->

<color name="mediumseagreen">#3CB371</color><!--中海蓝 -->

<color name="limegreen">#32CD32</color><!--橙绿色 -->

<color name="darkslategray">#2F4F4F</color><!--暗瓦灰色 -->

<color name="darkslategrey">#2F4F4F</color><!--暗瓦灰色 -->

<color name="seagreen">#2E8B57</color><!--海绿色 -->

<color name="forestgreen">#228B22</color><!--森林绿 -->

<color name="lightseagreen">#20B2AA</color><!--亮海蓝色 -->

<color name="dodgerblue">#1E90FF</color><!--闪兰色 -->

<color name="midnightblue">#191970</color><!--中灰兰色 -->

<color name="aqua">#00FFFF</color><!--浅绿色 -->

<color name="cyan">#00FFFF</color><!--青色 -->

<color name="springgreen">#00FF7F</color><!--春绿色 -->

<color name="lime">#00FF00</color><!--酸橙色 -->

<color name="mediumspringgreen">#00FA9A</color><!--中春绿色 -->

<color name="darkturquoise">#00CED1</color><!--暗宝石绿 -->

<color name="deepskyblue">#00BFFF</color><!--深天蓝色 -->

<color name="darkcyan">#008B8B</color><!--暗青色 -->

<color name="teal">#008080</color><!--水鸭色 -->

<color name="green">#008000</color><!--绿色 -->

<color name="darkgreen">#006400</color><!--暗绿色 -->

<color name="blue">#0000FF</color><!--蓝色 -->

<color name="mediumblue">#0000CD</color><!--中兰色 -->

<color name="darkblue">#00008B</color><!--暗蓝色 -->

<color name="navy">#000080</color><!--海军色 -->

<color name="black">#000000</color><!--黑色 -->

</resources>
好的,搭建一个 Android 记事本需要分为前端和后端两个部分,其中前端主要使用 XML 和 Java 语言进行开发,后端主要使用 Java 语言进行开发。 首先,我们来介绍前端部分的代码: 1. XML 布局文件res/layout 文件夹下创建一个名为 activity_main.xml 的布局文件,用于设置记事本的 UI 界面,代码如下: ```xml <?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent"> <EditText android:id="@+id/editText" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_above="@+id/bottomBar" android:layout_alignParentTop="true" android:background="@android:color/white" android:gravity="top|left" android:inputType="textMultiLine" android:padding="10dp" android:scrollbars="vertical" /> <LinearLayout android:id="@+id/bottomBar" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_alignParentBottom="true" android:orientation="horizontal" android:weightSum="4"> <Button android:id="@+id/newButton" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:text="新建" /> <Button android:id="@+id/saveButton" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:text="保存" /> <Button android:id="@+id/findButton" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:text="查找" /> <Button android:id="@+id/replaceButton" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:text="替换" /> </LinearLayout> </RelativeLayout> ``` 2. Java 代码文件 在 app/java/com.example.notepad 文件夹下创建一个名为 MainActivity.java 的 Java 代码文件,用于实现记事本的各项功能,代码如下: ```java package com.example.notepad; import androidx.appcompat.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.EditText; import android.widget.Toast; import java.io.BufferedReader; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.InputStreamReader; public class MainActivity extends AppCompatActivity { EditText editText; Button newButton, saveButton, findButton, replaceButton; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); editText = findViewById(R.id.editText); newButton = findViewById(R.id.newButton); saveButton = findViewById(R.id.saveButton); findButton = findViewById(R.id.findButton); replaceButton = findViewById(R.id.replaceButton); // 新建按钮点击事件 newButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { editText.setText(""); } }); // 保存按钮点击事件 saveButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { String text = editText.getText().toString(); if (text.isEmpty()) { Toast.makeText(MainActivity.this, "请输入内容", Toast.LENGTH_SHORT).show(); } else { try { FileOutputStream fos = openFileOutput("note.txt", MODE_PRIVATE); fos.write(text.getBytes()); fos.close(); Toast.makeText(MainActivity.this, "保存成功", Toast.LENGTH_SHORT).show(); } catch (Exception e) { e.printStackTrace(); } } } }); // 查找按钮点击事件 findButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Toast.makeText(MainActivity.this, "查找功能正在开发中", Toast.LENGTH_SHORT).show(); } }); // 替换按钮点击事件 replaceButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Toast.makeText(MainActivity.this, "替换功能正在开发中", Toast.LENGTH_SHORT).show(); } }); // 读取文件中的内容 try { FileInputStream fis = openFileInput("note.txt"); BufferedReader br = new BufferedReader(new InputStreamReader(fis)); String line; StringBuilder sb = new StringBuilder(); while ((line = br.readLine()) != null) { sb.append(line); } fis.close(); editText.setText(sb.toString()); } catch (Exception e) { e.printStackTrace(); } } } ``` 以上就是前端部分的代码。接下来,我们来介绍后端部分的代码: 1. Java 代码文件 在 app/java/com.example.notepad 文件夹下创建一个名为 Note.java 的 Java 代码文件,用于封装 Note 类,代码如下: ```java package com.example.notepad; public class Note { private String title; private String content; public Note(String title, String content) { this.title = title; this.content = content; } public String getTitle() { return title; } public void setTitle(String title) { this.title = title; } public String getContent() { return content; } public void setContent(String content) { this.content = content; } } ``` 2. 数据库帮助类文件 在 app/java/com.example.notepad 文件夹下创建一个名为 NoteDBHelper.java 的 Java 代码文件,用于封装数据库帮助类,代码如下: ```java package com.example.notepad; import android.content.Context; import android.database.sqlite.SQLiteDatabase; import android.database.sqlite.SQLiteOpenHelper; public class NoteDBHelper extends SQLiteOpenHelper { private static final int DB_VERSION = 1; private static final String DB_NAME = "Note.db"; public static final String NOTE_TABLE_NAME = "note"; public static final String NOTE_COLUMN_ID = "_id"; public static final String NOTE_COLUMN_TITLE = "title"; public static final String NOTE_COLUMN_CONTENT = "content"; public NoteDBHelper(Context context) { super(context, DB_NAME, null, DB_VERSION); } @Override public void onCreate(SQLiteDatabase db) { String createTable = "CREATE TABLE " + NOTE_TABLE_NAME + "(" + NOTE_COLUMN_ID + " INTEGER PRIMARY KEY AUTOINCREMENT, " + NOTE_COLUMN_TITLE + " TEXT, " + NOTE_COLUMN_CONTENT + " TEXT);"; db.execSQL(createTable); } @Override public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { db.execSQL("DROP TABLE IF EXISTS " + NOTE_TABLE_NAME); onCreate(db); } } ``` 3. 数据库操作类文件 在 app/java/com.example.notepad 文件夹下创建一个名为 NoteDAO.java 的 Java 代码文件,用于封装数据库操作类,代码如下: ```java package com.example.notepad; import android.content.ContentValues; import android.content.Context; import android.database.Cursor; import android.database.sqlite.SQLiteDatabase; import java.util.ArrayList; import java.util.List; public class NoteDAO { private NoteDBHelper dbHelper; public NoteDAO(Context context) { dbHelper = new NoteDBHelper(context); } public void add(Note note) { SQLiteDatabase db = dbHelper.getWritableDatabase(); ContentValues values = new ContentValues(); values.put(NoteDBHelper.NOTE_COLUMN_TITLE, note.getTitle()); values.put(NoteDBHelper.NOTE_COLUMN_CONTENT, note.getContent()); db.insert(NoteDBHelper.NOTE_TABLE_NAME, null, values); db.close(); } public void delete(int id) { SQLiteDatabase db = dbHelper.getWritableDatabase(); db.delete(NoteDBHelper.NOTE_TABLE_NAME, NoteDBHelper.NOTE_COLUMN_ID + "=?", new String[]{String.valueOf(id)}); db.close(); } public void update(Note note) { SQLiteDatabase db = dbHelper.getWritableDatabase(); ContentValues values = new ContentValues(); values.put(NoteDBHelper.NOTE_COLUMN_TITLE, note.getTitle()); values.put(NoteDBHelper.NOTE_COLUMN_CONTENT, note.getContent()); db.update(NoteDBHelper.NOTE_TABLE_NAME, values, NoteDBHelper.NOTE_COLUMN_ID + "=?", new String[]{String.valueOf(note.getId())}); db.close(); } public List<Note> getAll() { List<Note> list = new ArrayList<>(); SQLiteDatabase db = dbHelper.getReadableDatabase(); Cursor cursor = db.query(NoteDBHelper.NOTE_TABLE_NAME, null, null, null, null, null, null); while (cursor.moveToNext()) { int id = cursor.getInt(cursor.getColumnIndex(NoteDBHelper.NOTE_COLUMN_ID)); String title = cursor.getString(cursor.getColumnIndex(NoteDBHelper.NOTE_COLUMN_TITLE)); String content = cursor.getString(cursor.getColumnIndex(NoteDBHelper.NOTE_COLUMN_CONTENT)); Note note = new Note(); note.setId(id); note.setTitle(title); note.setContent(content); list.add(note); } cursor.close(); db.close(); return list; } } ``` 以上就是后端部分的代码。需要注意的是,这里只是示例代码,实际开发中需要根据具体需求进行适当的调整和改进。
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