Shaping up the custom extension module

sample-custom-extension/build.gradle

@@ -6,8 +6,11 @@ android {
     buildToolsVersion BUILD_TOOLS
 
     defaultConfig {
-        applicationId "noties.ru.markwon_samplecustomextension"
+
-        minSdkVersion MIN_SDK
+        applicationId "ru.noties.markwon.sample.extension"
+
+        // using 21 as minimum only to be able to vector assets
+        minSdkVersion 21
         targetSdkVersion TARGET_SDK
         versionCode 1
         versionName version

sample-custom-extension/src/main/AndroidManifest.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="noties.ru.markwon_samplecustomextension">
+    package="ru.noties.markwon.sample.extension">
 
     <application
         android:allowBackup="true"
@@ -9,10 +9,10 @@
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
         android:theme="@style/AppTheme">
+
         <activity android:name=".MainActivity">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
-
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>

sample-custom-extension/src/main/java/noties/ru/markwon_samplecustomextension/IconProcessor.java

@@ -1,86 +0,0 @@
-package noties.ru.markwon_samplecustomextension;
-
-import android.text.TextUtils;
-
-import org.commonmark.node.Node;
-import org.commonmark.node.Text;
-import org.commonmark.parser.delimiter.DelimiterProcessor;
-import org.commonmark.parser.delimiter.DelimiterRun;
-
-import java.util.regex.Matcher;
-import java.util.regex.Pattern;
-
-public class IconProcessor implements DelimiterProcessor {
-
-    private static final Pattern PATTERN = Pattern.compile("material-icon-(\\w+)-(\\w+)-(\\w+)");
-
-    @Override
-    public char getOpeningCharacter() {
-        return IconNode.DELIMITER;
-    }
-
-    @Override
-    public char getClosingCharacter() {
-        return IconNode.DELIMITER;
-    }
-
-    @Override
-    public int getMinLength() {
-        return 1;
-    }
-
-    @Override
-    public int getDelimiterUse(DelimiterRun opener, DelimiterRun closer) {
-        return opener.length() >= 1 && closer.length() >= 1 ? 1 : 0;
-    }
-
-    @Override
-    public void process(Text opener, Text closer, int delimiterUse) {
-
-        final IconGroupNode iconGroupNode = new IconGroupNode();
-
-        final Node next = opener.getNext();
-
-        boolean handled = false;
-
-        // process only if we have exactly one Text node
-        if (next instanceof Text && next.getNext() == closer) {
-
-            final String text = ((Text) next).getLiteral();
-
-            if (!TextUtils.isEmpty(text)) {
-
-                // attempt to match
-                final Matcher matcher = PATTERN.matcher(text);
-                if (matcher.matches()) {
-                    final IconNode iconNode = new IconNode(
-                            matcher.group(1),
-                            matcher.group(2),
-                            matcher.group(3)
-                    );
-                    iconGroupNode.appendChild(iconNode);
-                    next.unlink();
-                    handled = true;
-                }
-            }
-        }
-
-        if (!handled) {
-
-            // restore delimiters if we didn't match
-
-            iconGroupNode.appendChild(new Text(IconNode.DELIMITER_STRING));
-
-            Node node;
-            for (Node tmp = opener.getNext(); tmp != null && tmp != closer; tmp = node) {
-                node = tmp.getNext();
-                // append a child anyway
-                iconGroupNode.appendChild(tmp);
-            }
-
-            iconGroupNode.appendChild(new Text(IconNode.DELIMITER_STRING));
-        }
-
-        opener.insertBefore(iconGroupNode);
-    }
-}

sample-custom-extension/src/main/java/noties/ru/markwon_samplecustomextension/IconSpanProvider.java

@@ -1,9 +0,0 @@
-package noties.ru.markwon_samplecustomextension;
-
-import android.support.annotation.NonNull;
-
-public interface IconSpanProvider {
-
-    @NonNull
-    IconSpan provide(@NonNull String name, @NonNull String color, @NonNull String size);
-}

sample-custom-extension/src/main/java/noties/ru/markwon_samplecustomextension/IconSpanProviderImpl.java

@@ -1,51 +0,0 @@
-package noties.ru.markwon_samplecustomextension;
-
-import android.content.Context;
-import android.content.res.Resources;
-import android.graphics.drawable.Drawable;
-import android.os.Build;
-import android.support.annotation.DrawableRes;
-import android.support.annotation.NonNull;
-
-public class IconSpanProviderImpl implements IconSpanProvider {
-
-    private static final boolean IS_L = Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP;
-
-    private final Context context;
-    private final Resources resources;
-    private final int fallBack;
-
-    public IconSpanProviderImpl(@NonNull Context context, @DrawableRes int fallBack) {
-        this.context = context;
-        this.resources = context.getResources();
-        this.fallBack = fallBack;
-    }
-
-    @NonNull
-    @Override
-    public IconSpan provide(@NonNull String name, @NonNull String color, @NonNull String size) {
-        final String resName = materialIconName(name, color, size);
-        int resId = resources.getIdentifier(resName, "drawable", context.getPackageName());
-        if (resId == 0) {
-            resId = fallBack;
-        }
-        return new IconSpan(getDrawable(resId), IconSpan.ALIGN_CENTER);
-    }
-
-    @NonNull
-    private static String materialIconName(@NonNull String name, @NonNull String color, @NonNull String size) {
-        return "ic_" + name + "_" + color + "_" + size + "dp";
-    }
-
-    @NonNull
-    private Drawable getDrawable(int resId) {
-        final Drawable drawable;
-        if (IS_L) {
-            drawable = context.getDrawable(resId);
-        } else {
-            drawable = resources.getDrawable(resId);
-        }
-        //noinspection ConstantConditions
-        return drawable;
-    }
-}

sample-custom-extension/src/main/java/noties/ru/markwon_samplecustomextension/IconUtils.java

@@ -1,46 +0,0 @@
-package noties.ru.markwon_samplecustomextension;
-
-import android.support.annotation.NonNull;
-
-public abstract class IconUtils {
-
-    private static final String TO_FIND = "@material-icon-";
-
-    public static void prepare(@NonNull StringBuilder builder) {
-
-        int start = builder.indexOf(TO_FIND);
-        int end;
-
-        while (start > -1) {
-            end = iconDefinitionEnd(start + TO_FIND.length(), builder);
-            builder.insert(end, '@');
-            start = builder.indexOf(TO_FIND, end);
-        }
-    }
-
-    private static int iconDefinitionEnd(int index, @NonNull StringBuilder builder) {
-
-        // all spaces, new lines, non-words or digits,
-
-        char c;
-
-        int end = -1;
-        for (int i = index; i < builder.length(); i++) {
-            c = builder.charAt(i);
-            if (Character.isWhitespace(c)
-                    || !(Character.isLetterOrDigit(c) || c == '-' || c == '_')) {
-                end = i;
-                break;
-            }
-        }
-
-        if (end == -1) {
-            end = builder.length();
-        }
-
-        return end;
-    }
-
-    private IconUtils() {
-    }
-}

sample-custom-extension/src/main/java/noties/ru/markwon_samplecustomextension/MainActivity.java

@@ -1,44 +0,0 @@
-package noties.ru.markwon_samplecustomextension;
-
-import android.app.Activity;
-import android.os.Bundle;
-import android.widget.TextView;
-
-import org.commonmark.ext.gfm.strikethrough.StrikethroughExtension;
-import org.commonmark.ext.gfm.tables.TablesExtension;
-import org.commonmark.node.Node;
-import org.commonmark.parser.Parser;
-
-import java.util.Arrays;
-
-import ru.noties.markwon.SpannableBuilder;
-import ru.noties.markwon.SpannableConfiguration;
-import ru.noties.markwon.tasklist.TaskListExtension;
-
-public class MainActivity extends Activity {
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        setContentView(0);
-
-        final TextView textView = findViewById(0);
-
-        final Parser parser = new Parser.Builder()
-                // we will register all known to Markwon extensions
-                .extensions(Arrays.asList(
-                        StrikethroughExtension.create(),
-                        TablesExtension.create(),
-                        TaskListExtension.create()
-                ))
-                // this is the handler for custom icons
-                .customDelimiterProcessor(new IconProcessor())
-                .build();
-
-        final Node node = parser.parse("# Hello icons! @material-icon-home-black-24@\n\n Your account @material-icon-account_balance-white-26@ is 0.00003");
-        final SpannableBuilder builder = new SpannableBuilder();
-        final IconVisitor visitor = new IconVisitor(SpannableConfiguration.create(this), builder, new IconSpanProviderImpl(this, R.drawable.ic_home_black_24dp));
-        node.accept(visitor);
-        textView.setText(builder.text());
-    }
-}

sample-custom-extension/src/main/java/ru/noties/markwon/sample/extension/IconGroupNode.java

@@ -1,7 +1,8 @@
-package noties.ru.markwon_samplecustomextension;
+package ru.noties.markwon.sample.extension;
 
 import org.commonmark.node.CustomNode;
 
+@SuppressWarnings("WeakerAccess")
 public class IconGroupNode extends CustomNode {
 
 }

sample-custom-extension/src/main/java/ru/noties/markwon/sample/extension/IconNode.java

@@ -1,13 +1,13 @@
-package noties.ru.markwon_samplecustomextension;
+package ru.noties.markwon.sample.extension;
 
 import android.support.annotation.NonNull;
 
 import org.commonmark.node.CustomNode;
 import org.commonmark.node.Delimited;
 
+@SuppressWarnings("WeakerAccess")
 public class IconNode extends CustomNode implements Delimited {
 
-
     public static final char DELIMITER = '@';
 
     public static final String DELIMITER_STRING = "" + DELIMITER;

sample-custom-extension/src/main/java/ru/noties/markwon/sample/extension/IconProcessor.java

@@ -0,0 +1,160 @@
+package ru.noties.markwon.sample.extension;
+
+import android.support.annotation.NonNull;
+import android.text.TextUtils;
+
+import org.commonmark.node.Node;
+import org.commonmark.node.Text;
+import org.commonmark.parser.delimiter.DelimiterProcessor;
+import org.commonmark.parser.delimiter.DelimiterRun;
+
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+@SuppressWarnings("WeakerAccess")
+public class IconProcessor implements DelimiterProcessor {
+
+    @NonNull
+    public static IconProcessor create() {
+        return new IconProcessor();
+    }
+
+    // ic-home-black-24
+    private static final Pattern PATTERN = Pattern.compile("ic-(\\w+)-(\\w+)-(\\d+)");
+
+    private static final String TO_FIND = IconNode.DELIMITER_STRING + "ic-";
+
+    /**
+     * Should be used when input string does not wrap icon definition with `@` from both ends.
+     * So, `@ic-home-white-24` would become `@ic-home-white-24@`. This way parsing is easier
+     * and more predictable (cannot specify multiple ending delimiters, as we would require them:
+     * space, newline, end of a document, and a lot of more)
+     *
+     * @param input to process
+     * @return processed string
+     * @see #prepare(StringBuilder)
+     */
+    @NonNull
+    public static String prepare(@NonNull String input) {
+        final StringBuilder builder = new StringBuilder(input);
+        prepare(builder);
+        return builder.toString();
+    }
+
+    public static void prepare(@NonNull StringBuilder builder) {
+
+        int start = builder.indexOf(TO_FIND);
+        int end;
+
+        while (start > -1) {
+
+            end = iconDefinitionEnd(start + TO_FIND.length(), builder);
+
+            // if we match our pattern, append `@` else ignore
+            if (iconDefinitionValid(builder.subSequence(start + 1, end))) {
+                builder.insert(end, '@');
+            }
+
+            // move to next
+            start = builder.indexOf(TO_FIND, end);
+        }
+    }
+
+    @Override
+    public char getOpeningCharacter() {
+        return IconNode.DELIMITER;
+    }
+
+    @Override
+    public char getClosingCharacter() {
+        return IconNode.DELIMITER;
+    }
+
+    @Override
+    public int getMinLength() {
+        return 1;
+    }
+
+    @Override
+    public int getDelimiterUse(DelimiterRun opener, DelimiterRun closer) {
+        return opener.length() >= 1 && closer.length() >= 1 ? 1 : 0;
+    }
+
+    @Override
+    public void process(Text opener, Text closer, int delimiterUse) {
+
+        final IconGroupNode iconGroupNode = new IconGroupNode();
+
+        final Node next = opener.getNext();
+
+        boolean handled = false;
+
+        // process only if we have exactly one Text node
+        if (next instanceof Text && next.getNext() == closer) {
+
+            final String text = ((Text) next).getLiteral();
+
+            if (!TextUtils.isEmpty(text)) {
+
+                // attempt to match
+                final Matcher matcher = PATTERN.matcher(text);
+                if (matcher.matches()) {
+                    final IconNode iconNode = new IconNode(
+                            matcher.group(1),
+                            matcher.group(2),
+                            matcher.group(3)
+                    );
+                    iconGroupNode.appendChild(iconNode);
+                    next.unlink();
+                    handled = true;
+                }
+            }
+        }
+
+        if (!handled) {
+
+            // restore delimiters if we didn't match
+
+            iconGroupNode.appendChild(new Text(IconNode.DELIMITER_STRING));
+
+            Node node;
+            for (Node tmp = opener.getNext(); tmp != null && tmp != closer; tmp = node) {
+                node = tmp.getNext();
+                // append a child anyway
+                iconGroupNode.appendChild(tmp);
+            }
+
+            iconGroupNode.appendChild(new Text(IconNode.DELIMITER_STRING));
+        }
+
+        opener.insertBefore(iconGroupNode);
+    }
+
+    private static int iconDefinitionEnd(int index, @NonNull StringBuilder builder) {
+
+        // all spaces, new lines, non-words or digits,
+
+        char c;
+
+        int end = -1;
+        for (int i = index; i < builder.length(); i++) {
+            c = builder.charAt(i);
+            if (Character.isWhitespace(c)
+                    || !(Character.isLetterOrDigit(c) || c == '-' || c == '_')) {
+                end = i;
+                break;
+            }
+        }
+
+        if (end == -1) {
+            end = builder.length();
+        }
+
+        return end;
+    }
+
+    private static boolean iconDefinitionValid(@NonNull CharSequence cs) {
+        final Matcher matcher = PATTERN.matcher(cs);
+        return matcher.matches();
+    }
+}

sample-custom-extension/src/main/java/ru/noties/markwon/sample/extension/IconSpan.java

@@ -1,4 +1,4 @@
-package noties.ru.markwon_samplecustomextension;
+package ru.noties.markwon.sample.extension;
 
 import android.graphics.Canvas;
 import android.graphics.Paint;
@@ -12,10 +12,11 @@ import android.text.style.ReplacementSpan;
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 
+@SuppressWarnings("WeakerAccess")
 public class IconSpan extends ReplacementSpan {
 
     @IntDef({ALIGN_BOTTOM, ALIGN_BASELINE, ALIGN_CENTER})
-    @Retention(RetentionPolicy.SOURCE)
+    @Retention(RetentionPolicy.CLASS)
     @interface Alignment {
     }
 

sample-custom-extension/src/main/java/ru/noties/markwon/sample/extension/IconSpanProvider.java

@@ -0,0 +1,67 @@
+package ru.noties.markwon.sample.extension;
+
+import android.content.Context;
+import android.content.res.Resources;
+import android.graphics.drawable.Drawable;
+import android.os.Build;
+import android.support.annotation.DrawableRes;
+import android.support.annotation.NonNull;
+
+@SuppressWarnings("WeakerAccess")
+public abstract class IconSpanProvider {
+
+    @SuppressWarnings("SameParameterValue")
+    @NonNull
+    public static IconSpanProvider create(@NonNull Context context, @DrawableRes int fallBack) {
+        return new Impl(context, fallBack);
+    }
+
+
+    @NonNull
+    public abstract IconSpan provide(@NonNull String name, @NonNull String color, @NonNull String size);
+
+
+    private static class Impl extends IconSpanProvider {
+
+        private static final boolean IS_L = Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP;
+
+        private final Context context;
+        private final Resources resources;
+        private final int fallBack;
+
+        Impl(@NonNull Context context, @DrawableRes int fallBack) {
+            this.context = context;
+            this.resources = context.getResources();
+            this.fallBack = fallBack;
+        }
+
+        @NonNull
+        @Override
+        public IconSpan provide(@NonNull String name, @NonNull String color, @NonNull String size) {
+            final String resName = iconName(name, color, size);
+            int resId = resources.getIdentifier(resName, "drawable", context.getPackageName());
+            if (resId == 0) {
+                resId = fallBack;
+            }
+            return new IconSpan(getDrawable(resId), IconSpan.ALIGN_CENTER);
+        }
+
+
+        @NonNull
+        private static String iconName(@NonNull String name, @NonNull String color, @NonNull String size) {
+            return "ic_" + name + "_" + color + "_" + size + "dp";
+        }
+
+        @NonNull
+        private Drawable getDrawable(int resId) {
+            final Drawable drawable;
+            if (IS_L) {
+                drawable = context.getDrawable(resId);
+            } else {
+                drawable = resources.getDrawable(resId);
+            }
+            //noinspection ConstantConditions
+            return drawable;
+        }
+    }
+}

sample-custom-extension/src/main/java/ru/noties/markwon/sample/extension/IconVisitor.java

@@ -1,4 +1,4 @@
-package noties.ru.markwon_samplecustomextension;
+package ru.noties.markwon.sample.extension;
 
 import android.support.annotation.NonNull;
 import android.text.TextUtils;
@@ -9,6 +9,7 @@ import ru.noties.markwon.SpannableBuilder;
 import ru.noties.markwon.SpannableConfiguration;
 import ru.noties.markwon.renderer.SpannableMarkdownVisitor;
 
+@SuppressWarnings("WeakerAccess")
 public class IconVisitor extends SpannableMarkdownVisitor {
 
     private final SpannableBuilder builder;

sample-custom-extension/src/main/java/ru/noties/markwon/sample/extension/MainActivity.java

@@ -0,0 +1,66 @@
+package ru.noties.markwon.sample.extension;
+
+import android.app.Activity;
+import android.os.Bundle;
+import android.widget.TextView;
+
+import org.commonmark.ext.gfm.strikethrough.StrikethroughExtension;
+import org.commonmark.ext.gfm.tables.TablesExtension;
+import org.commonmark.node.Node;
+import org.commonmark.parser.Parser;
+
+import java.util.Arrays;
+
+import ru.noties.markwon.SpannableBuilder;
+import ru.noties.markwon.SpannableConfiguration;
+import ru.noties.markwon.tasklist.TaskListExtension;
+
+public class MainActivity extends Activity {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        setContentView(R.layout.activity_main);
+
+        final TextView textView = findViewById(R.id.text_view);
+
+        // obtain an instance of parser
+        final Parser parser = new Parser.Builder()
+                // we will register all known to Markwon extensions
+                .extensions(Arrays.asList(
+                        StrikethroughExtension.create(),
+                        TablesExtension.create(),
+                        TaskListExtension.create()
+                ))
+                // this is the handler for custom icons
+                .customDelimiterProcessor(IconProcessor.create())
+                .build();
+
+        // we process input to wrap icon definitions with `@` on both ends
+        // if your input already does it, there is not need for `IconProcessor.prepare()` call.
+        final String markdown = IconProcessor.prepare(getString(R.string.input));
+
+        final Node node = parser.parse(markdown);
+
+        final SpannableBuilder builder = new SpannableBuilder();
+
+        // please note that here I am passing `0` as fallback it means that if markdown references
+        // unknown icon, it will try to load fallback one and will fail with ResourceNotFound. It's
+        // better to provide a valid fallback option
+        final IconSpanProvider spanProvider = IconSpanProvider.create(this, 0);
+
+        // create an instance of visitor to process parsed markdown
+        final IconVisitor visitor = new IconVisitor(
+                SpannableConfiguration.create(this),
+                builder,
+                spanProvider
+        );
+
+        // trigger visit
+        node.accept(visitor);
+
+        // apply
+        textView.setText(builder.text());
+    }
+}

sample-custom-extension/src/main/res/drawable/ic_android_black_24dp.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="24dp"
+        android:height="24dp"
+        android:viewportWidth="24.0"
+        android:viewportHeight="24.0">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M6,18c0,0.55 0.45,1 1,1h1v3.5c0,0.83 0.67,1.5 1.5,1.5s1.5,-0.67 1.5,-1.5L11,19h2v3.5c0,0.83 0.67,1.5 1.5,1.5s1.5,-0.67 1.5,-1.5L16,19h1c0.55,0 1,-0.45 1,-1L18,8L6,8v10zM3.5,8C2.67,8 2,8.67 2,9.5v7c0,0.83 0.67,1.5 1.5,1.5S5,17.33 5,16.5v-7C5,8.67 4.33,8 3.5,8zM20.5,8c-0.83,0 -1.5,0.67 -1.5,1.5v7c0,0.83 0.67,1.5 1.5,1.5s1.5,-0.67 1.5,-1.5v-7c0,-0.83 -0.67,-1.5 -1.5,-1.5zM15.53,2.16l1.3,-1.3c0.2,-0.2 0.2,-0.51 0,-0.71 -0.2,-0.2 -0.51,-0.2 -0.71,0l-1.48,1.48C13.85,1.23 12.95,1 12,1c-0.96,0 -1.86,0.23 -2.66,0.63L7.85,0.15c-0.2,-0.2 -0.51,-0.2 -0.71,0 -0.2,0.2 -0.2,0.51 0,0.71l1.31,1.31C6.97,3.26 6,5.01 6,7h12c0,-1.99 -0.97,-3.75 -2.47,-4.84zM10,5L9,5L9,4h1v1zM15,5h-1L14,4h1v1z"/>
+</vector>

sample-custom-extension/src/main/res/drawable/ic_home_black_36dp.xml

@@ -0,0 +1,4 @@
+<vector android:height="36dp" android:viewportHeight="24.0"
+    android:viewportWidth="24.0" android:width="36dp" xmlns:android="http://schemas.android.com/apk/res/android">
+    <path android:fillColor="#FF000000" android:pathData="M10,20v-6h4v6h5v-8h3L12,3 2,12h3v8z"/>
+</vector>

sample-custom-extension/src/main/res/drawable/ic_memory_black_48dp.xml

@@ -0,0 +1,4 @@
+<vector android:height="48dp" android:viewportHeight="24.0"
+    android:viewportWidth="24.0" android:width="48dp" xmlns:android="http://schemas.android.com/apk/res/android">
+    <path android:fillColor="#FF000000" android:pathData="M15,9L9,9v6h6L15,9zM13,13h-2v-2h2v2zM21,11L21,9h-2L19,7c0,-1.1 -0.9,-2 -2,-2h-2L15,3h-2v2h-2L11,3L9,3v2L7,5c-1.1,0 -2,0.9 -2,2v2L3,9v2h2v2L3,13v2h2v2c0,1.1 0.9,2 2,2h2v2h2v-2h2v2h2v-2h2c1.1,0 2,-0.9 2,-2v-2h2v-2h-2v-2h2zM17,17L7,17L7,7h10v10z"/>
+</vector>

sample-custom-extension/src/main/res/drawable/ic_sentiment_satisfied_red_64dp.xml

@@ -0,0 +1,6 @@
+<vector android:height="64dp" android:viewportHeight="24.0"
+    android:viewportWidth="24.0" android:width="64dp" xmlns:android="http://schemas.android.com/apk/res/android">
+    <path android:fillColor="#FFFF0000" android:pathData="M15.5,9.5m-1.5,0a1.5,1.5 0,1 1,3 0a1.5,1.5 0,1 1,-3 0"/>
+    <path android:fillColor="#FFFF0000" android:pathData="M8.5,9.5m-1.5,0a1.5,1.5 0,1 1,3 0a1.5,1.5 0,1 1,-3 0"/>
+    <path android:fillColor="#FFFF0000" android:pathData="M11.99,2C6.47,2 2,6.48 2,12s4.47,10 9.99,10C17.52,22 22,17.52 22,12S17.52,2 11.99,2zM12,20c-4.42,0 -8,-3.58 -8,-8s3.58,-8 8,-8 8,3.58 8,8 -3.58,8 -8,8zM12,16c-1.48,0 -2.75,-0.81 -3.45,-2L6.88,14c0.8,2.05 2.79,3.5 5.12,3.5s4.32,-1.45 5.12,-3.5h-1.67c-0.7,1.19 -1.97,2 -3.45,2z"/>
+</vector>

sample-custom-extension/src/main/res/layout/activity_main.xml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ScrollView
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <TextView
+        android:id="@+id/text_view"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:padding="8dip"
+        android:textAppearance="?android:attr/textAppearanceMedium"
+        tools:text="@string/input"/>
+
+</ScrollView>

sample-custom-extension/src/main/res/values/colors.xml

@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<resources>
-    <color name="colorPrimary">#3F51B5</color>
-    <color name="colorPrimaryDark">#303F9F</color>
-    <color name="colorAccent">#FF4081</color>
-</resources>

sample-custom-extension/src/main/res/values/strings.xml

@@ -1,3 +1,13 @@
 <resources>
+
     <string name="app_name">Markwon-SampleCustomExtension</string>
+
+    <string name="input"><![CDATA[
+        # Hello! @ic-android-black-24\n\n
+        Home 36 black: @ic-home-black-36\n\n
+        Memory 48 black: @ic-memory-black-48\n\n
+        Sentiment Satisfied 64 red: @ic-sentiment_satisfied-red-64
+    ]]>
+    </string>
+
 </resources>

sample-custom-extension/src/main/res/values/styles.xml

@@ -1,8 +1,5 @@
 <resources>
 
-    <!-- Base application theme. -->
+    <style name="AppTheme" parent="android:Theme.Material.Light.DarkActionBar"/>
-    <style name="AppTheme" parent="android:Theme.Material.Light.DarkActionBar">
-        <!-- Customize your theme here. -->
-    </style>
 
 </resources>