v1.0

build.gradle

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+apply plugin: 'com.android.library'
+
+android {
+    compileSdkVersion 25
+    buildToolsVersion "25.0.3"
+
+    defaultConfig {
+        minSdkVersion 16
+        targetSdkVersion 25
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+
+    }
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+        }
+    }
+}
+
+dependencies {
+    compile fileTree(dir: 'libs', include: ['*.jar'])
+    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
+        exclude group: 'com.android.support', module: 'support-annotations'
+    })
+    compile 'com.android.support:appcompat-v7:25.3.1'
+    testCompile 'junit:junit:4.12'
+}

proguard-rules.pro

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+# Add project specific ProGuard rules here.
+# By default, the flags in this file are appended to flags specified
+# in C:\Users\user\AppData\Local\Android\Sdk/tools/proguard/proguard-android.txt
+# You can edit the include path and order by changing the proguardFiles
+# directive in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# Add any project specific keep options here:
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

src/androidTest/java/com/bachors/img2ascii/ExampleInstrumentedTest.java

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+package com.bachors.img2ascii;
+
+import android.content.Context;
+import android.support.test.InstrumentationRegistry;
+import android.support.test.runner.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumentation test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() throws Exception {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getTargetContext();
+
+        assertEquals("com.bachors.img2ascii.test", appContext.getPackageName());
+    }
+}

src/main/AndroidManifest.xml

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+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+
+    package="com.bachors.img2ascii">
+
+    <application android:allowBackup="true" android:label="@string/app_name"
+        android:supportsRtl="true">
+
+    </application>
+
+</manifest>

src/main/java/com/bachors/img2ascii/Img2Ascii.java

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+package com.bachors.img2ascii;
+
+import android.graphics.Bitmap;
+import android.graphics.Color;
+
+import static java.lang.StrictMath.round;
+
+/**
+ * Created by Bachors on 10/31/2017.
+ * https://github.com/bachors/Android-Img2Ascii
+ */
+
+public class Img2Ascii {
+
+    private String[] chars = {"@", "#", "+", "\\", ";", ":", ",", ".", "`", " "};
+
+    public Img2Ascii(){
+
+    }
+
+    public String convert(Bitmap rgbImage, int quality) {
+        if(quality > 3 && quality < 1)
+            quality = 3;
+        String tx = "";
+        int width = rgbImage.getWidth();
+        int height = rgbImage.getHeight();
+        for (int y = 0; y < height; y = y + quality) {
+            for (int x = 0; x < width; x = x + quality) {
+                int pixel = rgbImage.getPixel(x, y);
+                int red = Color.red(pixel);
+                int green = Color.green(pixel);
+                int blue = Color.blue(pixel);
+
+                int brightness = red + green + blue;
+                brightness = round(brightness / (765 / (chars.length - 1)));
+                tx += chars[brightness];
+            }
+            tx += "\n";
+        }
+        return tx;
+    }
+}

src/main/res/values/strings.xml

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+<resources>
+    <string name="app_name">Img2Ascii</string>
+</resources>

src/test/java/com/bachors/img2ascii/ExampleUnitTest.java

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+package com.bachors.img2ascii;
+
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+public class ExampleUnitTest {
+    @Test
+    public void addition_isCorrect() throws Exception {
+        assertEquals(4, 2 + 2);
+    }
+}