Cache typefaces

library/src/main/java/com/rengwuxian/materialedittext/MaterialEditText.java

@@ -485,7 +485,7 @@ public void afterTextChanged(Editable s) {
   }
 
   private Typeface getCustomTypeface(@NonNull String fontPath) {
-    return Typeface.createFromAsset(getContext().getAssets(), fontPath);
+    return TypefaceCache.get(fontPath, getContext().getAssets());
   }
 
   public void setIconLeft(@DrawableRes int res) {

library/src/main/java/com/rengwuxian/materialedittext/TypefaceCache.java

@@ -0,0 +1,35 @@
+package com.rengwuxian.materialedittext;
+
+import android.content.res.AssetManager;
+import android.graphics.Typeface;
+
+import java.lang.ref.WeakReference;
+import java.util.HashMap;
+import java.util.Map;
+
+public class TypefaceCache {
+  private static final Map<String, WeakReference<Typeface>> FONT_CACHE = new HashMap<>();
+
+  public static Typeface get(String name, AssetManager assets) {
+    if (!FONT_CACHE.containsKey(name)) {
+      return createAndAddTypeFace(name, assets);
+    }
+
+    WeakReference<Typeface> reference = FONT_CACHE.get(name);
+    Typeface typeFace = reference.get();
+
+    if (typeFace != null) {
+      return typeFace;
+    }
+
+    return createAndAddTypeFace(name, assets);
+  }
+
+  private static Typeface createAndAddTypeFace(String name, AssetManager assets) {
+    Typeface typeface = Typeface.createFromAsset(assets, name);
+
+    FONT_CACHE.put(name, new WeakReference<>(typeface));
+
+    return typeface;
+  }
+}