diff --git a/app/src/main/java/com/ihewro/android_expression_package/MyDataBase.java b/app/src/main/java/com/ihewro/android_expression_package/MyDataBase.java
index 88ef4e8..f99d4a4 100644
--- a/app/src/main/java/com/ihewro/android_expression_package/MyDataBase.java
+++ b/app/src/main/java/com/ihewro/android_expression_package/MyDataBase.java
@@ -44,7 +44,7 @@ public class MyDataBase {
     public static boolean addExpressionRecord(Expression expression,File source){
 
         byte[] bytes = fileToCompressedBytes(source);
-        if (bytes!=null){
+        if (bytes == null){
             return false;
         }else {
             return addExpressionRecord(expression,bytes);
diff --git a/app/src/main/java/com/ihewro/android_expression_package/task/GenerateScreenshotTask.java b/app/src/main/java/com/ihewro/android_expression_package/task/GenerateScreenshotTask.java
index bc8cb58..4981779 100644
--- a/app/src/main/java/com/ihewro/android_expression_package/task/GenerateScreenshotTask.java
+++ b/app/src/main/java/com/ihewro/android_expression_package/task/GenerateScreenshotTask.java
@@ -86,7 +86,7 @@ protected Boolean doInBackground(Void... voids) {
         }
         date.setText(text);
         content.setText(this.content);
-        //生成截图 
+        //生成截图
         v.setDrawingCacheEnabled(true);
         //measure()实际测量 自己显示在屏幕上的宽高 2个参数，int widthMeasureSpec 和 int heightMeasureSpec表示具体的测量规则。
         v.measure(View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED),