diff --git a/app/src/main/java/com/yzq/zxing/MainActivity.java b/app/src/main/java/com/yzq/zxing/MainActivity.java
index 30ca890..e7f118c 100644
--- a/app/src/main/java/com/yzq/zxing/MainActivity.java
+++ b/app/src/main/java/com/yzq/zxing/MainActivity.java
@@ -16,7 +16,6 @@
 import android.widget.TextView;
 import android.widget.Toast;
 
-import com.google.zxing.WriterException;
 import com.yanzhenjie.permission.Action;
 import com.yanzhenjie.permission.AndPermission;
 import com.yanzhenjie.permission.Permission;
@@ -142,13 +141,8 @@ public void onAction(List<String> permissions) {
                     return;
                 }
 
+                bitmap = CodeCreator.createQRCode(contentEtString, 400, 400, null);
 
-                try {
-                    bitmap = CodeCreator.createQRCode(contentEtString, 400, 400, null);
-
-                } catch (WriterException e) {
-                    e.printStackTrace();
-                }
                 if (bitmap != null) {
                     contentIv.setImageBitmap(bitmap);
                 }
@@ -163,14 +157,9 @@ public void onAction(List<String> permissions) {
                     return;
                 }
 
-                bitmap = null;
-                try {
-                    Bitmap logo = BitmapFactory.decodeResource(getResources(), R.mipmap.ic_launcher);
-                    bitmap = CodeCreator.createQRCode(contentEtString, 400, 400, logo);
+                Bitmap logo = BitmapFactory.decodeResource(getResources(), R.mipmap.ic_launcher);
+                bitmap = CodeCreator.createQRCode(contentEtString, 400, 400, logo);
 
-                } catch (WriterException e) {
-                    e.printStackTrace();
-                }
                 if (bitmap != null) {
                     contentIvWithLogo.setImageBitmap(bitmap);
                 }
diff --git a/zxinglibrary/build.gradle b/zxinglibrary/build.gradle
index 6d5013f..1259f6d 100644
--- a/zxinglibrary/build.gradle
+++ b/zxinglibrary/build.gradle
@@ -19,7 +19,7 @@ android {
 
 dependencies {
     implementation fileTree(include: ['*.jar'], dir: 'libs')
-    api files('libs/core-3.3.3.jar')
+    implementation files('libs/core-3.3.3.jar')
     compileOnly "com.android.support:appcompat-v7:$android_support"
     compileOnly "com.android.support:design:$android_support"
     compileOnly "com.android.support:support-v4:$android_support"
diff --git a/zxinglibrary/src/main/java/com/yzq/zxinglibrary/encode/CodeCreator.java b/zxinglibrary/src/main/java/com/yzq/zxinglibrary/encode/CodeCreator.java
index 245b52f..4702aa7 100644
--- a/zxinglibrary/src/main/java/com/yzq/zxinglibrary/encode/CodeCreator.java
+++ b/zxinglibrary/src/main/java/com/yzq/zxinglibrary/encode/CodeCreator.java
@@ -16,9 +16,8 @@
 public class CodeCreator {
 
 
-
     /*生成二维码*/
-    public static Bitmap createQRCode(String content, int w, int h,Bitmap logo) throws WriterException {
+    public static Bitmap createQRCode(String content, int w, int h, Bitmap logo) {
 
 
         if (TextUtils.isEmpty(content)) {
@@ -29,13 +28,13 @@ public static Bitmap createQRCode(String content, int w, int h,Bitmap logo) thro
         int offsetY = h / 2;
 
         /*生成logo*/
-        Bitmap logoBitmap=null;
+        Bitmap logoBitmap = null;
 
-        if (logo!=null){
+        if (logo != null) {
             Matrix matrix = new Matrix();
-            float scaleFactor = Math.min(w * 1.0f / 5 / logo.getWidth(), h * 1.0f / 5 /logo.getHeight());
-            matrix.postScale(scaleFactor,scaleFactor);
-            logoBitmap= Bitmap.createBitmap(logo, 0, 0, logo.getWidth(),   logo.getHeight(), matrix, true);
+            float scaleFactor = Math.min(w * 1.0f / 5 / logo.getWidth(), h * 1.0f / 5 / logo.getHeight());
+            matrix.postScale(scaleFactor, scaleFactor);
+            logoBitmap = Bitmap.createBitmap(logo, 0, 0, logo.getWidth(), logo.getHeight(), matrix, true);
         }
 
 
@@ -57,37 +56,48 @@ public static Bitmap createQRCode(String content, int w, int h,Bitmap logo) thro
         //设置空白边距的宽度
         hints.put(EncodeHintType.MARGIN, 0);
         // 生成二维矩阵,编码时指定大小,不要生成了图片以后再进行缩放,这样会模糊导致识别失败
-        BitMatrix matrix = new MultiFormatWriter().encode(content,
-                BarcodeFormat.QR_CODE, w, h, hints);
-
-        // 二维矩阵转为一维像素数组,也就是一直横着排了
-        int[] pixels = new int[w * h];
-        for (int y = 0; y < h; y++) {
-            for (int x = 0; x < w; x++) {
-                if(x >= offsetX && x < offsetX + logoW && y>= offsetY && y < offsetY + logoH){
-                    int pixel = logoBitmap.getPixel(x-offsetX,y-offsetY);
-                    if(pixel == 0){
-                        if(matrix.get(x, y)){
-                            pixel = 0xff000000;
-                        }else{
-                            pixel = 0xffffffff;
+        BitMatrix matrix = null;
+        try {
+            matrix = new MultiFormatWriter().encode(content,
+                    BarcodeFormat.QR_CODE, w, h, hints);
+
+            // 二维矩阵转为一维像素数组,也就是一直横着排了
+            int[] pixels = new int[w * h];
+            for (int y = 0; y < h; y++) {
+                for (int x = 0; x < w; x++) {
+                    if (x >= offsetX && x < offsetX + logoW && y >= offsetY && y < offsetY + logoH) {
+                        int pixel = logoBitmap.getPixel(x - offsetX, y - offsetY);
+                        if (pixel == 0) {
+                            if (matrix.get(x, y)) {
+                                pixel = 0xff000000;
+                            } else {
+                                pixel = 0xffffffff;
+                            }
                         }
-                    }
-                    pixels[y * w + x] = pixel;
-                }else{
-                    if (matrix.get(x, y)) {
-                        pixels[y * w + x] = 0xff000000;
+                        pixels[y * w + x] = pixel;
                     } else {
-                        pixels[y * w + x] = 0xffffffff;
+                        if (matrix.get(x, y)) {
+                            pixels[y * w + x] = 0xff000000;
+                        } else {
+                            pixels[y * w + x] = 0xffffffff;
+                        }
                     }
                 }
             }
+
+            Bitmap bitmap = Bitmap.createBitmap(w, h,
+                    Bitmap.Config.ARGB_8888);
+            bitmap.setPixels(pixels, 0, w, 0, 0, w, h);
+            return bitmap;
+
+
+        } catch (WriterException e) {
+
+            System.out.print(e);
+            return null;
         }
 
-        Bitmap bitmap = Bitmap.createBitmap(w, h,
-                Bitmap.Config.ARGB_8888);
-        bitmap.setPixels(pixels, 0, w, 0, 0, w, h);
-        return bitmap;
+
     }
 
 }