diff --git a/META-INF/plugin.xml b/META-INF/plugin.xml
index 4a2fe25..7b374f7 100644
--- a/META-INF/plugin.xml
+++ b/META-INF/plugin.xml
@@ -1,7 +1,7 @@
 <idea-plugin version="2">
     <id>cn.nekocode.plugin.parcelablegenerator</id>
     <name>Parcelable Code Generator(for kotlin)</name>
-    <version>0.6.2</version>
+    <version>0.7.0</version>
     <vendor email="syfyw@qq.com" url="https://github.com/nekocode/android-parcelable-intellij-plugin-kotlin">nekocode</vendor>
 
     <description><![CDATA[
diff --git a/src/cn/nekocode/plugin/parcelablegenerator/CodeGenerator.java b/src/cn/nekocode/plugin/parcelablegenerator/CodeGenerator.java
index 5641fd3..582528c 100644
--- a/src/cn/nekocode/plugin/parcelablegenerator/CodeGenerator.java
+++ b/src/cn/nekocode/plugin/parcelablegenerator/CodeGenerator.java
@@ -65,12 +65,12 @@ private String generateConstructor(List<TypeSerializer> typeSerializers) {
         StringBuilder sb = new StringBuilder("constructor(source: Parcel) : this(");
         String content = "";
         for(TypeSerializer typeSerializer : typeSerializers) {
-            content += typeSerializer.readValue() + ",";
+            content += "\n" + typeSerializer.generateReadValue() + ",";
         }
         if(content.length() > 0) {
             content = content.substring(0, content.length() - 1);
         }
-        sb.append(content).append(")");
+        sb.append(content).append("\n)");
 
         return sb.toString();
     }
@@ -82,7 +82,7 @@ private String generateDescribeContents() {
     private String generateWriteToParcel(List<TypeSerializer> typeSerializers) {
         StringBuilder sb = new StringBuilder("override fun writeToParcel(dest: Parcel?, flags: Int) {");
         for(TypeSerializer typeSerializer : typeSerializers) {
-            sb.append(typeSerializer.writeValue()).append("\n");
+            sb.append(typeSerializer.generateWriteValue()).append("\n");
         }
         sb.append("}");
 
diff --git a/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/BooleanSerializer.java b/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/BooleanSerializer.java
index 787ab16..6abe264 100644
--- a/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/BooleanSerializer.java
+++ b/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/BooleanSerializer.java
@@ -26,11 +26,11 @@ public BooleanSerializer(ValueParameterDescriptor field) {
         super(field);
     }
 
-    public String readValue() {
+    public String generateReadValue() {
         return "1.equals(source.readInt())";
     }
 
-    public String writeValue() {
-        return "dest?.writeInt((if(" + field.getName() + ") 1 else 0))";
+    public String generateWriteValue() {
+        return "dest?.writeInt((if(" + getFieldName() + ") 1 else 0))";
     }
 }
diff --git a/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/CharSerializer.java b/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/CharSerializer.java
index a0871e9..e6c9958 100644
--- a/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/CharSerializer.java
+++ b/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/CharSerializer.java
@@ -26,11 +26,11 @@ public CharSerializer(ValueParameterDescriptor field) {
         super(field);
     }
 
-    public String readValue() {
+    public String generateReadValue() {
         return "source.readByte().toChar()";
     }
 
-    public String writeValue() {
-        return "dest?.writeByte(" + field.getName() + ".toByte())";
+    public String generateWriteValue() {
+        return "dest?.writeByte(" + getFieldName() + ".toByte())";
     }
 }
diff --git a/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/EnumSerializer.java b/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/EnumSerializer.java
index 88b4f9c..6f8243f 100644
--- a/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/EnumSerializer.java
+++ b/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/EnumSerializer.java
@@ -26,11 +26,19 @@ public EnumSerializer(ValueParameterDescriptor field) {
         super(field);
     }
 
-    public String readValue() {
-        return field.getType() + ".values()[source.readInt()]";
+    public String generateReadValue() {
+        if (!isTypeNullable()) {
+            return getNoneNullType() + ".values()[source.readInt()]";
+        } else {
+            return "source.readValue(Int::class.java.classLoader)?.let { Enum.values()[it as Int] }";
+        }
     }
 
-    public String writeValue() {
-        return "dest?.writeInt(" + field.getName() + ".ordinal)";
+    public String generateWriteValue() {
+        if (!isTypeNullable()) {
+            return "dest?.writeInt(" + getFieldName() + ".ordinal)";
+        } else {
+            return "dest?.writeValue(" + getFieldName() + (isTypeNullable() ? "?" : "") + ".ordinal)";
+        }
     }
 }
diff --git a/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/NormalArraySerializer.java b/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/NormalArraySerializer.java
index a4cd5d3..e3e5f62 100644
--- a/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/NormalArraySerializer.java
+++ b/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/NormalArraySerializer.java
@@ -26,13 +26,11 @@ public NormalArraySerializer(ValueParameterDescriptor field) {
         super(field);
     }
 
-    public String readValue() {
-        String typeProjection = field.getType().getArguments().get(0).getType().toString();
-        return "source.create" + typeProjection + "Array().toTypedArray()";
+    public String generateReadValue() {
+        return "source.create" + getNoneNullProjectionType() + "Array().toTypedArray()";
     }
 
-    public String writeValue() {
-        String typeProjection= field.getType().getArguments().get(0).getType().toString();
-        return "dest?.write" + typeProjection + "Array(" + field.getName() + ".to" + typeProjection + "Array())";
+    public String generateWriteValue() {
+        return "dest?.write" + getNoneNullProjectionType() + "Array(" + getFieldName() + ".to" + getNoneNullProjectionType() + "Array())";
     }
 }
diff --git a/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/NormalListSerializer.java b/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/NormalListSerializer.java
index d9abbc6..b75df6d 100644
--- a/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/NormalListSerializer.java
+++ b/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/NormalListSerializer.java
@@ -26,12 +26,11 @@ public NormalListSerializer(ValueParameterDescriptor field) {
         super(field);
     }
 
-    public String readValue() {
-        String typeProjection = field.getType().getArguments().get(0).getType().toString();
-        return "ArrayList<" + typeProjection + ">().apply{ source.readList(this, " + typeProjection + "::class.java.classLoader) }";
+    public String generateReadValue() {
+        return "ArrayList<" + getProjectionType() + ">().apply{ source.readList(this, " + getNoneNullProjectionType() + "::class.java.classLoader) }";
     }
 
-    public String writeValue() {
-        return "dest?.writeList(" + field.getName() + ")";
+    public String generateWriteValue() {
+        return "dest?.writeList(" + getFieldName() + ")";
     }
 }
diff --git a/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/NormalSerializer.java b/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/NormalSerializer.java
index 5e89c5a..32c6b15 100644
--- a/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/NormalSerializer.java
+++ b/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/NormalSerializer.java
@@ -26,11 +26,11 @@ public NormalSerializer(ValueParameterDescriptor field) {
         super(field);
     }
 
-    public String readValue() {
-        return "source.read" + field.getType() + "()";
+    public String generateReadValue() {
+        return "source.read" + getNoneNullType() + "()";
     }
 
-    public String writeValue() {
-        return "dest?.write" + field.getType() + "(" + field.getName() + ")";
+    public String generateWriteValue() {
+        return "dest?.write" + getNoneNullType() + "(" + getFieldName() + ")";
     }
 }
diff --git a/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/NullableArraySerializer.java b/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/NullableArraySerializer.java
index c22fd91..df25394 100644
--- a/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/NullableArraySerializer.java
+++ b/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/NullableArraySerializer.java
@@ -26,13 +26,11 @@ public NullableArraySerializer(ValueParameterDescriptor field) {
         super(field);
     }
 
-    public String readValue() {
-        String type = field.getType().toString();
-        String typeProjection = field.getType().getArguments().get(0).getType().toString();
-        return "source.readArray(" + typeProjection.substring(0, typeProjection.length() -1) + "::class.java.classLoader) as " + type;
+    public String generateReadValue() {
+        return "source.readArray(" + getNoneNullProjectionType() + "::class.java.classLoader) as " + getType();
     }
 
-    public String writeValue() {
-        return "dest?.writeArray(" + field.getName() + ")";
+    public String generateWriteValue() {
+        return "dest?.writeArray(" + getFieldName() + ")";
     }
 }
diff --git a/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/NullableStringSerializer.java b/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/NullableStringSerializer.java
index e3b782e..f24d5ae 100644
--- a/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/NullableStringSerializer.java
+++ b/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/NullableStringSerializer.java
@@ -26,11 +26,11 @@ public NullableStringSerializer(ValueParameterDescriptor field) {
         super(field);
     }
 
-    public String readValue() {
+    public String generateReadValue() {
         return "source.readString()";
     }
 
-    public String writeValue() {
-        return "dest?.writeString(" + field.getName() + ")";
+    public String generateWriteValue() {
+        return "dest?.writeString(" + getFieldName() + ")";
     }
 }
diff --git a/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/NullableValueSerializer.java b/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/NullableValueSerializer.java
index 34dd0d4..8607006 100644
--- a/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/NullableValueSerializer.java
+++ b/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/NullableValueSerializer.java
@@ -26,12 +26,11 @@ public NullableValueSerializer(ValueParameterDescriptor field) {
         super(field);
     }
 
-    public String readValue() {
-        String type = field.getType().toString();
-        return "source.readValue(" + type.substring(0, type.length() - 1) + "::class.java.classLoader) as " + type;
+    public String generateReadValue() {
+        return "source.readValue(" + getNoneNullType() + "::class.java.classLoader) as " + getType();
     }
 
-    public String writeValue() {
-        return "dest?.writeValue(" + field.getName() + ")";
+    public String generateWriteValue() {
+        return "dest?.writeValue(" + getFieldName() + ")";
     }
 }
diff --git a/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/OriginalArraySerializer.java b/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/OriginalArraySerializer.java
index 79747d8..1c2d10e 100644
--- a/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/OriginalArraySerializer.java
+++ b/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/OriginalArraySerializer.java
@@ -26,25 +26,19 @@ public OriginalArraySerializer(ValueParameterDescriptor field) {
         super(field);
     }
 
-    public String readValue() {
-        String typeProjection;
-        if(field.getType().toString().startsWith("Array")) {
-            typeProjection = field.getType().getArguments().get(0).getType().toString();
+    public String generateReadValue() {
+        if (getProjectionType() == null) {
+            return "source.create" + getNoneNullType() + "()";
         } else {
-            typeProjection = field.getType().toString();
-            typeProjection = typeProjection.substring(0, typeProjection.length()-5);
+            return "source.create" + getNoneNullProjectionType() + "Array()";
         }
-        return "source.create" + typeProjection + "Array()";
     }
 
-    public String writeValue() {
-        String typeProjection;
-        if(field.getType().toString().startsWith("Array")) {
-            typeProjection = field.getType().getArguments().get(0).getType().toString();
+    public String generateWriteValue() {
+        if (getProjectionType() == null) {
+            return "dest?.write" + getNoneNullType() + "(" + getFieldName() + ")";
         } else {
-            typeProjection = field.getType().toString();
-            typeProjection = typeProjection.substring(0, typeProjection.length()-5);
+            return "dest?.write" + getNoneNullProjectionType() + "Array(" + getFieldName() + ")";
         }
-        return "dest?.write" + typeProjection + "Array(" + field.getName() + ")";
     }
 }
diff --git a/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/ParcelableArraySerializer.java b/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/ParcelableArraySerializer.java
index dd17d80..3886d75 100644
--- a/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/ParcelableArraySerializer.java
+++ b/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/ParcelableArraySerializer.java
@@ -26,11 +26,11 @@ public ParcelableArraySerializer(ValueParameterDescriptor field) {
         super(field);
     }
 
-    public String readValue() {
-        return "source.readParcelableArray(" + field.getType().getArguments().get(0).getType() + "::class.java.classLoader) as " + field.getType();
+    public String generateReadValue() {
+        return "source.readParcelableArray(" + getNoneNullProjectionType() + "::class.java.classLoader) as " + getType();
     }
 
-    public String writeValue() {
-        return "dest?.writeParcelableArray(" + field.getName() + ", 0)";
+    public String generateWriteValue() {
+        return "dest?.writeParcelableArray(" + getFieldName()+ ", 0)";
     }
 }
diff --git a/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/ParcelableListSerializer.java b/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/ParcelableListSerializer.java
index 4ac9d16..d25441d 100644
--- a/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/ParcelableListSerializer.java
+++ b/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/ParcelableListSerializer.java
@@ -26,11 +26,11 @@ public ParcelableListSerializer(ValueParameterDescriptor field) {
         super(field);
     }
 
-    public String readValue() {
-        return "source.createTypedArrayList(" + field.getType().getArguments().get(0).getType() +  ".CREATOR)";
+    public String generateReadValue() {
+        return "source.createTypedArrayList(" + getNoneNullProjectionType() +  ".CREATOR)";
     }
 
-    public String writeValue() {
-        return "dest?.writeTypedList(" + field.getName() + ")";
+    public String generateWriteValue() {
+        return "dest?.writeTypedList(" + getFieldName() + ")";
     }
 }
diff --git a/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/ParcelableObjectSerializer.java b/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/ParcelableObjectSerializer.java
index b860a08..91f1928 100644
--- a/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/ParcelableObjectSerializer.java
+++ b/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/ParcelableObjectSerializer.java
@@ -26,11 +26,11 @@ public ParcelableObjectSerializer(ValueParameterDescriptor field) {
         super(field);
     }
 
-    public String readValue() {
-        return "source.readParcelable<" + field.getType() + ">(" + field.getType() + "::class.java.classLoader)";
+    public String generateReadValue() {
+        return "source.readParcelable<" + getType() + ">(" + getNoneNullType() + "::class.java.classLoader)";
     }
 
-    public String writeValue() {
-        return "dest?.writeParcelable(" + field.getName() + ", 0)";
+    public String generateWriteValue() {
+        return "dest?.writeParcelable(" + getFieldName() + ", 0)";
     }
 }
diff --git a/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/SerializableObjectSerializer.java b/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/SerializableObjectSerializer.java
index a7689de..1d7a126 100644
--- a/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/SerializableObjectSerializer.java
+++ b/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/SerializableObjectSerializer.java
@@ -26,11 +26,11 @@ public SerializableObjectSerializer(ValueParameterDescriptor field) {
         super(field);
     }
 
-    public String readValue() {
-        return "source.readSerializable() as " + field.getType();
+    public String generateReadValue() {
+        return "source.readSerializable() as " + getType();
     }
 
-    public String writeValue() {
-        return "dest?.writeSerializable(" + field.getName() + ")";
+    public String generateWriteValue() {
+        return "dest?.writeSerializable(" + getFieldName() + ")";
     }
 }
diff --git a/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/StringListSerializer.java b/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/StringListSerializer.java
index dbdbc8c..c3a2c5b 100644
--- a/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/StringListSerializer.java
+++ b/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/StringListSerializer.java
@@ -26,11 +26,11 @@ public StringListSerializer(ValueParameterDescriptor field) {
         super(field);
     }
 
-    public String readValue() {
+    public String generateReadValue() {
         return "source.createStringArrayList()";
     }
 
-    public String writeValue() {
-        return "dest?.writeStringList(" + field.getName() + ")";
+    public String generateWriteValue() {
+        return "dest?.writeStringList(" + getFieldName() + ")";
     }
 }
diff --git a/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/TypeSerializer.java b/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/TypeSerializer.java
index f6930e3..317c383 100644
--- a/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/TypeSerializer.java
+++ b/src/cn/nekocode/plugin/parcelablegenerator/typeserializers/TypeSerializer.java
@@ -21,13 +21,67 @@
  * Created by nekocode on 2016/2/2.
  */
 public abstract class TypeSerializer {
-    protected final ValueParameterDescriptor field;
+    private final ValueParameterDescriptor field;
+    private final String fieldName;
+    private final String type;
+    private final String noneNullType;
+    private final boolean isTypeNullable;
+    private final String projectionType;
+    private final boolean isProjectionTypeNullable;
+    private final String noneNullProjectionType;
 
     public TypeSerializer(ValueParameterDescriptor field) {
         this.field = field;
+        fieldName = field.getName().toString();
+        type = field.getType().toString();
+        isTypeNullable = type.endsWith("?");
+        noneNullType = isTypeNullable ? type.substring(0, type.length() - 1) : type;
+        if (field.getType().getArguments().size() > 0) {
+            projectionType = field.getType().getArguments().get(0).getType().toString();
+            isProjectionTypeNullable  = projectionType.endsWith("?");
+            noneNullProjectionType = isProjectionTypeNullable ?
+                    projectionType.substring(0, projectionType.length() - 1) : projectionType;
+
+        } else {
+            projectionType = null;
+            isProjectionTypeNullable = true;
+            noneNullProjectionType = null;
+        }
     }
 
-    abstract public String readValue();
+    abstract public String generateReadValue();
+
+    abstract public String generateWriteValue();
 
-    abstract public String writeValue();
+    public ValueParameterDescriptor getField() {
+        return field;
+    }
+
+    public String getFieldName() {
+        return fieldName;
+    }
+
+    public String getType() {
+        return type;
+    }
+
+    public String getNoneNullType() {
+        return noneNullType;
+    }
+
+    public boolean isTypeNullable() {
+        return isTypeNullable;
+    }
+
+    public String getProjectionType() {
+        return projectionType;
+    }
+
+    public boolean isProjectionTypeNullable() {
+        return isProjectionTypeNullable;
+    }
+
+    public String getNoneNullProjectionType() {
+        return noneNullProjectionType;
+    }
 }