diff --git a/README.md b/README.md
index 8d44dba..2e6df5a 100644
--- a/README.md
+++ b/README.md
@@ -41,37 +41,36 @@ viewpagerCommonAdapter.setOnImageLongClickListener(new OnImageLongClickListener(
     }
 });
 
-ImageViewer.newInstance()
-    .setIndex(0)
+final ImageViewer imageViewer = new ImageViewer.Builder(
+    new ImageLoader() {
+        @Override
+        public void showImage(final int position, String path, ImageView imageView) {
+            final OnLoadListener loadListener = this.getOnLoadListener();
+            final View view = this.getView();
+            loadListener.onStart(position);
+            Glide.with(OCApplication.getContext())
+                    .load(path)
+                    .listener(new RequestListener<String, GlideDrawable>() {
+                        @Override
+                        public boolean onException(Exception e, String model, Target<GlideDrawable> target, boolean isFirstResource) {
+                            loadListener.onError(position);
+                            return false;
+                        }
+
+                        @Override
+                        public boolean onResourceReady(GlideDrawable resource, String model, Target<GlideDrawable> target, boolean isFromMemoryCache, boolean isFirstResource) {
+                            loadListener.onSuccess(position);
+                            return false;
+                        }
+                    })
+                    .into(imageView);
+        }
+    },
+    viewpagerCommonAdapter)
+    .setIndex(2)
     .setPaths(paths)
-    //setTransformerType 可以设置ImageViewer切换图片时的动画
-    .setTransformerType(ImageViewer.TYPE_ZOOMOUT_TRANSFORMER)
-    .setAdapter(viewpagerCommonAdapter)
-    .setImageLoader(new ImageLoader() {
-	@Override
-	public void showImage(final int position, String path, ImageView imageView) {
-	    final OnLoadListener loadListener = this.getOnLoadListener();
-	    final View view = this.getView();
-
-	    loadListener.onStart(position);
-	    Glide.with(OCApplication.getContext())
-		    .load(path)
-		    .listener(new RequestListener<String, GlideDrawable>() {
-			@Override
-			public boolean onException(Exception e, String model, Target<GlideDrawable> target, boolean isFirstResource) {
-			    loadListener.onError(position);
-			    return false;
-			}
-
-			@Override
-			public boolean onResourceReady(GlideDrawable resource, String model, Target<GlideDrawable> target, boolean isFromMemoryCache, boolean isFirstResource) {
-			    loadListener.onSuccess(position);
-			    return false;
-			}
-		    })
-		    .into(imageView);
-	}
-    })
+    .setTransformerType(ImageViewer.TYPE_CUBEOUT_TRANSFORMER)
+    .build()
     .show(getSupportFragmentManager(), "ImageViewer");
 ```
 
@@ -117,18 +116,19 @@ public class CustomViewpagerAdapter extends ViewpagerAdapter {
 ## Customized ImageViewer init
 
 ```Java
-ImageViewer.newInstance()
-	.setIndex(0)
-	.setPaths(paths)
-	.setTransformerType(ImageViewer.TYPE_DEPTHPAGE_TRANSFORMER)
-	.setAdapter(new CustomViewpagerAdapter(MainActivity.this))
-	.setImageLoader(new ImageLoader() {
-	    @Override
-	    public void showImage(int position, String path, ImageView imageView) {
-		Glide.with(OCApplication.getContext())
-			.load(path)
-			.into(imageView);
-	    }
-	})
-	.show(getSupportFragmentManager(), "ImageViewer");
+new ImageViewer.Builder(
+        new ImageLoader() {
+            @Override
+            public void showImage(int position, String path, ImageView imageView) {
+                Glide.with(OCApplication.getContext())
+                        .load(path)
+                        .into(imageView);
+            }
+        },
+        new CustomViewpagerAdapter(MainActivity.this))
+        .setIndex(3)
+        .setPaths(paths)
+        .setTransformerType(ImageViewer.TYPE_ZOOMOUT_TRANSFORMER)
+        .build()
+        .show(getSupportFragmentManager(), "ImageViewer");
 ```
diff --git a/app/src/main/java/cn/demo/MainActivity.java b/app/src/main/java/cn/demo/MainActivity.java
index 5992cfc..5885f94 100644
--- a/app/src/main/java/cn/demo/MainActivity.java
+++ b/app/src/main/java/cn/demo/MainActivity.java
@@ -48,31 +48,28 @@ protected void onCreate(Bundle savedInstanceState) {
         button1.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
-                ImageViewer.newInstance()
-                        .setIndex(3)
-                        .setPaths(paths)
-                        .setTransformerType(ImageViewer.TYPE_ZOOMOUT_TRANSFORMER)
-                        .setAdapter(new CustomViewpagerAdapter(MainActivity.this))
-                        .setImageLoader(new ImageLoader() {
+                new ImageViewer.Builder(
+                        new ImageLoader() {
                             @Override
                             public void showImage(int position, String path, ImageView imageView) {
                                 Glide.with(OCApplication.getContext())
                                         .load(path)
                                         .into(imageView);
                             }
-                        })
+                        },
+                        new CustomViewpagerAdapter(MainActivity.this))
+                        .setIndex(3)
+                        .setPaths(paths)
+                        .setTransformerType(ImageViewer.TYPE_ZOOMOUT_TRANSFORMER)
+                        .build()
                         .show(getSupportFragmentManager(), "ImageViewer");
             }
         });
 
         final ViewpagerCommonAdapter viewpagerCommonAdapter = new ViewpagerCommonAdapter(MainActivity.this);
 
-        final ImageViewer imageViewer = ImageViewer.newInstance()
-                .setIndex(2)
-                .setPaths(paths)
-                .setTransformerType(ImageViewer.TYPE_CUBEOUT_TRANSFORMER)
-                .setAdapter(viewpagerCommonAdapter)
-                .setImageLoader(new ImageLoader() {
+        final ImageViewer imageViewer = new ImageViewer.Builder(
+                new ImageLoader() {
                     @Override
                     public void showImage(final int position, String path, ImageView imageView) {
                         final OnLoadListener loadListener = this.getOnLoadListener();
@@ -95,7 +92,12 @@ public boolean onResourceReady(GlideDrawable resource, String model, Target<Glid
                                 })
                                 .into(imageView);
                     }
-                });
+                },
+                viewpagerCommonAdapter)
+                .setIndex(2)
+                .setPaths(paths)
+                .setTransformerType(ImageViewer.TYPE_CUBEOUT_TRANSFORMER)
+                .build();
 
         viewpagerCommonAdapter.setOnImageSingleClickListener(new OnImageSingleClickListener() {
             @Override
diff --git a/imageviewer/src/main/java/cn/imageviewer/adapter/ViewpagerAdapter.java b/imageviewer/src/main/java/cn/imageviewer/adapter/ViewpagerAdapter.java
index 7c72e38..9c40db6 100644
--- a/imageviewer/src/main/java/cn/imageviewer/adapter/ViewpagerAdapter.java
+++ b/imageviewer/src/main/java/cn/imageviewer/adapter/ViewpagerAdapter.java
@@ -12,6 +12,7 @@
 import cn.imageviewer.helper.OnImageLongClickListener;
 import cn.imageviewer.helper.OnImageSingleClickListener;
 import cn.imageviewer.helper.ImageLoader;
+import cn.imageviewer.helper.OnLoadListener;
 
 /**
  * Created by cloudist on 2017/6/28.
diff --git a/imageviewer/src/main/java/cn/imageviewer/view/ImageViewer.java b/imageviewer/src/main/java/cn/imageviewer/view/ImageViewer.java
index ea37bd5..cb345dc 100644
--- a/imageviewer/src/main/java/cn/imageviewer/view/ImageViewer.java
+++ b/imageviewer/src/main/java/cn/imageviewer/view/ImageViewer.java
@@ -1,9 +1,9 @@
 package cn.imageviewer.view;
 
-import android.os.Build;
 import android.os.Bundle;
 import android.support.annotation.Nullable;
 import android.support.v4.app.DialogFragment;
+import android.support.v4.app.FragmentManager;
 import android.support.v4.view.ViewPager;
 import android.view.Gravity;
 import android.view.LayoutInflater;
@@ -41,19 +41,12 @@ public class ImageViewer extends DialogFragment {
 
     SwipeableFrameLayout layout;
     FixedViewPager viewpager;
-    ViewpagerAdapter adapter;
 
     int index = 0;
     int transformerType = TYPE_DEFAULT_TRANSFORMER;
     List<String> paths = new ArrayList<>();
     ImageLoader imageLoader;
-
-    public static ImageViewer newInstance() {
-        Bundle args = new Bundle();
-        ImageViewer fragment = new ImageViewer();
-        fragment.setArguments(args);
-        return fragment;
-    }
+    ViewpagerAdapter adapter;
 
     @Override
     public void onCreate(Bundle savedInstanceState) {
@@ -130,35 +123,41 @@ private void setupViewPager(ViewPager viewPager) {
         }
     }
 
-    public ImageViewer setPaths(List<String> paths) {
-        this.paths = paths;
-        return ImageViewer.this;
-    }
+    public static class Builder {
+        int index = 0;
+        int transformerType = TYPE_DEFAULT_TRANSFORMER;
+        List<String> paths = new ArrayList<>();
+        ImageLoader imageLoader;
+        ViewpagerAdapter adapter;
 
-    public <T> ImageViewer setPaths(List<T> objects, ImageTramsform<T> imageTramsform) {
-        for (T t : objects) {
-            paths.add(imageTramsform.tramsformPaths(t));
+        public Builder(ImageLoader imageLoader, ViewpagerAdapter adapter) {
+            this.adapter = adapter;
+            this.imageLoader = imageLoader;
         }
-        return ImageViewer.this;
-    }
 
-    public ImageViewer setImageLoader(ImageLoader imageLoader) {
-        this.imageLoader = imageLoader;
-        return ImageViewer.this;
-    }
+        public Builder setIndex(int index) {
+            this.index = index;
+            return this;
+        }
 
-    public ImageViewer setIndex(int index) {
-        this.index = index;
-        return ImageViewer.this;
-    }
+        public Builder setTransformerType(int transformerType) {
+            this.transformerType = transformerType;
+            return this;
+        }
 
-    public ImageViewer setAdapter(ViewpagerAdapter adapter) {
-        this.adapter = adapter;
-        return ImageViewer.this;
-    }
+        public Builder setPaths(List<String> paths) {
+            this.paths = paths;
+            return this;
+        }
 
-    public ImageViewer setTransformerType(int transformerType) {
-        this.transformerType = transformerType;
-        return ImageViewer.this;
+        public ImageViewer build() {
+            ImageViewer imageViewer = new ImageViewer();
+            imageViewer.adapter = adapter;
+            imageViewer.imageLoader = imageLoader;
+            imageViewer.index = index;
+            imageViewer.transformerType = transformerType;
+            imageViewer.paths = paths;
+            return imageViewer;
+        }
     }
 }