一、DrawBoard

1、Dependencies

• 模塊級 build.gradle

implementation 'com.github.jenly1314:drawboard:1.1.0'

2、Test

（1）Activity Layout

• activity_draw_board.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:id="@+id/main"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"tools:context=".DrawBoardActivity"><com.king.drawboard.view.DrawBoardViewandroid:id="@+id/dbv_container"android:layout_width="match_parent"android:layout_height="0dp"android:layout_weight="1" /><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="horizontal"><Buttonandroid:id="@+id/btn_undo"android:layout_width="0dp"android:layout_height="wrap_content"android:layout_weight="1"android:text="撤銷" /><Buttonandroid:id="@+id/btn_redo"android:layout_width="0dp"android:layout_height="wrap_content"android:layout_marginStart="5dp"android:layout_weight="1"android:text="恢復" /><Buttonandroid:id="@+id/btn_clear"android:layout_width="0dp"android:layout_height="wrap_content"android:layout_marginStart="5dp"android:layout_weight="1"android:text="清空" /><Buttonandroid:id="@+id/btn_eraser"android:layout_width="0dp"android:layout_height="wrap_content"android:layout_marginStart="5dp"android:layout_weight="1"android:text="橡皮擦" /></LinearLayout>
</LinearLayout>

（2）Activity Code

• DrawBoardActivity.java

public class DrawBoardActivity extends AppCompatActivity {private boolean eraserFlag = false;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);EdgeToEdge.enable(this);setContentView(R.layout.activity_draw_board);ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main), (v, insets) -> {Insets systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars());v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom);return insets;});DrawBoardView dbvContainer = findViewById(R.id.dbv_container);Button btnUndo = findViewById(R.id.btn_undo);Button btnRedo = findViewById(R.id.btn_redo);Button btnClear = findViewById(R.id.btn_clear);Button btnEraser = findViewById(R.id.btn_eraser);// 設置畫筆顏色和粗細dbvContainer.setPaintColor(Color.RED);dbvContainer.setLineStrokeWidth(5f);// 撤銷btnUndo.setOnClickListener(v -> dbvContainer.undo());// 重做btnRedo.setOnClickListener(v -> dbvContainer.redo());// 清除btnClear.setOnClickListener(v -> dbvContainer.clear());// 橡皮擦 / 畫筆btnEraser.setOnClickListener(v -> {eraserFlag = !eraserFlag;if (eraserFlag) {btnEraser.setText("畫筆");dbvContainer.setDrawMode(DrawBoardView.DrawMode.ERASER);} else {btnEraser.setText("橡皮擦");dbvContainer.setDrawMode(DrawBoardView.DrawMode.DRAW_PATH);}});}
}

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二、FingerPaintView

1、Dependencies

• 模塊級 build.gradle

implementation 'com.github.PicnicSupermarket:FingerPaintView:1.2'

• settings.gradle，添加 JitPack 倉庫

dependencyResolutionManagement {repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)repositories {...maven { url 'https://jitpack.io' }}
}

2、Test

（1）Activity Layout

• activity_finger_paint_view.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:app="http://schemas.android.com/apk/res-auto"xmlns:tools="http://schemas.android.com/tools"android:id="@+id/main"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"tools:context=".FingerPaintViewActivity"><tech.picnic.fingerpaintview.FingerPaintImageViewandroid:id="@+id/fpiv_container"android:layout_width="match_parent"android:layout_height="0dp"android:layout_weight="1"android:src="@drawable/ic_launcher_background"app:inEditMode="true" /><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="horizontal"><Buttonandroid:id="@+id/btn_undo"android:layout_width="0dp"android:layout_height="wrap_content"android:layout_weight="1"android:text="撤銷" /><Buttonandroid:id="@+id/btn_clear"android:layout_width="0dp"android:layout_height="wrap_content"android:layout_marginStart="5dp"android:layout_weight="1"android:text="清空" /></LinearLayout>
</LinearLayout>

（2）Activity Code

• FingerPaintViewActivity.java

public class FingerPaintViewActivity extends AppCompatActivity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);EdgeToEdge.enable(this);setContentView(R.layout.activity_finger_paint_view);ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main), (v, insets) -> {Insets systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars());v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom);return insets;});FingerPaintImageView fpivContainer = findViewById(R.id.fpiv_container);Button btnUndo = findViewById(R.id.btn_undo);Button btnClear = findViewById(R.id.btn_clear);// 設置畫筆顏色和粗細fpivContainer.setStrokeColor(Color.RED);fpivContainer.setStrokeWidth(10f);// 撤銷btnUndo.setOnClickListener(v -> fpivContainer.undo());// 清除btnClear.setOnClickListener(v -> fpivContainer.clear());}
}

---

三、PaletteLib

1、Dependencies

• 模塊級 build.gradle

implementation 'com.gitee.osard:palettelib:1.3.0'

• settings.gradle，添加 JitPack 倉庫

dependencyResolutionManagement {repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)repositories {...maven { url 'https://jitpack.io' }}
}

2、Test

（1）Activity Layout

• activity_palette_lib.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:id="@+id/main"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"tools:context=".PaletteLibActivity"><com.mjsoftking.palettelib.PaletteImageViewandroid:id="@+id/piv_container"android:layout_width="match_parent"android:layout_height="0dp"android:layout_weight="1" /><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="horizontal"><Buttonandroid:id="@+id/btn_undo"android:layout_width="0dp"android:layout_height="wrap_content"android:layout_weight="1"android:text="撤銷" /><Buttonandroid:id="@+id/btn_clear"android:layout_width="0dp"android:layout_height="wrap_content"android:layout_marginStart="5dp"android:layout_weight="1"android:text="清空" /></LinearLayout>
</LinearLayout>

（2）Activity Code

• PaletteLibActivity.java

public class PaletteLibActivity extends AppCompatActivity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);EdgeToEdge.enable(this);setContentView(R.layout.activity_palette_lib);ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main), (v, insets) -> {Insets systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars());v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom);return insets;});PaletteImageView pivContainer = findViewById(R.id.piv_container);Button btnUndo = findViewById(R.id.btn_undo);Button btnClear = findViewById(R.id.btn_clear);// 設置畫筆顏色和粗細pivContainer.palette.setPaintColor(R.color.black);pivContainer.palette.setStrokeWidth(10f);// 撤銷btnUndo.setOnClickListener(v -> pivContainer.palette.revocation());// 清除btnClear.setOnClickListener(v -> pivContainer.palette.clear());}
}