diff --git a/.idea/vcs.xml b/.idea/vcs.xml
deleted file mode 100644
index 94a25f7..0000000
--- a/.idea/vcs.xml
+++ /dev/null
@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="VcsDirectoryMappings">
-    <mapping directory="$PROJECT_DIR$" vcs="Git" />
-  </component>
-</project>
\ No newline at end of file
diff --git a/app/src/main/java/com/nanchen/compressimage/MainActivity.java b/app/src/main/java/com/nanchen/compressimage/MainActivity.java
index ef23d9d..e502b25 100644
--- a/app/src/main/java/com/nanchen/compressimage/MainActivity.java
+++ b/app/src/main/java/com/nanchen/compressimage/MainActivity.java
@@ -48,7 +48,21 @@ private void initInstances() {
     }
 
     public void compress(View view) {
+        // 默认的压缩方法，多张图片只需要直接加入循环即可
         newFile = CompressHelper.getDefault(this).compressToFile(oldFile);
+
+        // 你也可以自定义压缩
+//        newFile = new CompressHelper.Builder(this)
+//                .setMaxWidth(720)  // 默认最大宽度为720
+//                .setMaxHeight(960) // 默认最大高度为960
+//                .setQuality(80)    // 默认压缩质量为80
+//                .setCompressFormat(CompressFormat.JPEG) // 设置默认压缩为jpg格式
+//                .setDestinationDirectoryPath(Environment.getExternalStoragePublicDirectory(
+//                        Environment.DIRECTORY_PICTURES).getAbsolutePath())
+//                .build()
+//                .compressToFile(oldFile);
+
+
         mImageNew.setImageBitmap(BitmapFactory.decodeFile(newFile.getAbsolutePath()));
         mTextNew.setText(String.format("Size : %s", getReadableFileSize(newFile.length())));
     }
diff --git a/compresshelper/src/main/java/com/nanchen/compresshelper/ImageUtil.java b/compresshelper/src/main/java/com/nanchen/compresshelper/ImageUtil.java
index 9945982..eed9d3a 100644
--- a/compresshelper/src/main/java/com/nanchen/compresshelper/ImageUtil.java
+++ b/compresshelper/src/main/java/com/nanchen/compresshelper/ImageUtil.java
@@ -58,10 +58,24 @@ static Bitmap getScaledBitmap(Context context, Uri imageUri, float maxWidth, flo
         int actualHeight = options.outHeight;
         int actualWidth = options.outWidth;
 
+        if (actualHeight == -1 || actualWidth == -1){
+            try {
+                ExifInterface exifInterface = new ExifInterface(filePath);
+                actualHeight = exifInterface.getAttributeInt(ExifInterface.TAG_IMAGE_LENGTH, ExifInterface.ORIENTATION_NORMAL);//获取图片的高度
+                actualWidth = exifInterface.getAttributeInt(ExifInterface.TAG_IMAGE_WIDTH, ExifInterface.ORIENTATION_NORMAL);//获取图片的宽度
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+        }
+
         if (actualWidth < 0 || actualHeight < 0) {
             Bitmap bitmap2 = BitmapFactory.decodeFile(filePath);
-            actualWidth = bitmap2.getWidth();
-            actualHeight = bitmap2.getHeight();
+            if (bitmap2 != null){
+                actualWidth = bitmap2.getWidth();
+                actualHeight = bitmap2.getHeight();
+            }else{
+                return null;
+            }
         }
 
         float imgRatio = (float) actualWidth / actualHeight;