[Android][Java] 그림 그리기

 

1. AndroidDraw 라이브러리 추가

 

app/build.gradle

dependencies {

    implementation 'androidx.appcompat:appcompat:1.6.1'
    implementation 'com.google.android.material:material:1.5.0'
    implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
    testImplementation 'junit:junit:4.13.2'
    androidTestImplementation 'androidx.test.ext:junit:1.1.5'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.1'
    
    
    implementation 'com.github.divyanshub024:AndroidDraw:v0.1' // 추가 
}

 

settings.gradle

maven { url 'https://jitpack.io' } 추가 

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

 

gradle.properties :

android.enableJetifier=true 추가 

# Project-wide Gradle settings.
# IDE (e.g. Android Studio) users:
# Gradle settings configured through the IDE *will override*
# any settings specified in this file.
# For more details on how to configure your build environment visit
# http://www.gradle.org/docs/current/userguide/build_environment.html
# Specifies the JVM arguments used for the daemon process.
# The setting is particularly useful for tweaking memory settings.
org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
# When configured, Gradle will run in incubating parallel mode.
# This option should only be used with decoupled projects. More details, visit
# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
# org.gradle.parallel=true
# AndroidX package structure to make it clearer which packages are bundled with the
# Android operating system, and which are packaged with your app's APK
# https://developer.android.com/topic/libraries/support-library/androidx-rn
android.useAndroidX=true
# Enables namespacing of each library's R class so that its R class includes only the
# resources declared in the library itself and none from the library's dependencies,
# thereby reducing the size of the R class for that library
android.nonTransitiveRClass=true

android.enableJetifier=true // 추가

 

2. 레이아웃 디자인

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <com.divyanshu.draw.widget.DrawView
        android:id="@+id/drawView"
        android:layout_width="300dp"
        android:layout_height="300dp"
        android:layout_marginTop="10dp"
        app:layout_constraintDimensionRatio="1:1"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.497"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="10dp"
        android:text="Button"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.498"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/drawView" />

</androidx.constraintlayout.widget.ConstraintLayout>

 

 3. MainActivity.java

public class MainActivity extends AppCompatActivity {
    DrawView drawView;
    Button button;
    String TAG = "MainActivity";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        drawView = findViewById(R.id.drawView);
        drawView.setStrokeWidth(70.0f);  // 그림 그릴 때 선의 굵기 설정.
        drawView.setColor(Color.WHITE);  // 그림 그릴 때 선의 색상을 흰색으로 설정.
        drawView.setBackgroundColor(Color.BLACK);// 배경색을 검은색으로 설정.
        button = findViewById(R.id.button);

        drawView.setOnTouchListener(new View.OnTouchListener() {
            @Override
            public boolean onTouch(View v, MotionEvent event) {
                drawView.onTouchEvent(event); // // drawView에 터치 이벤트 전달.

                return true;
            }
        });

        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                drawView.clearCanvas(); // 버튼 클릭 시 초기화.
            }
        });
    }
}

 

4. 결과