diff --git a/app/src/main/java/com/icssoft/icspda/activity/WWKGActivity.java b/app/src/main/java/com/icssoft/icspda/activity/WWKGActivity.java
index 98ca1bd..ed294cf 100644
--- a/app/src/main/java/com/icssoft/icspda/activity/WWKGActivity.java
+++ b/app/src/main/java/com/icssoft/icspda/activity/WWKGActivity.java
@@ -40,6 +40,7 @@ public class WWKGActivity extends AppCompatActivity {
     private RadioButton rbOut;
     private Button btnok;
     private Button btndel;
+    private Button btnclr;
     private SmartTable smartTable;
     String ErrorMsg ="";
     private List<WWKGData> data;
@@ -71,6 +72,7 @@ public class WWKGActivity extends AppCompatActivity {
                     break;
                 case 2:
                     HelpUtil.SetMsg(tvMsg, Color.BLUE, ErrorMsg);
+                    poNo.setFocusable(false);
                     break;
                 case 98:
                     HelpUtil.SetMsg(tvMsg, Color.RED, ErrorMsg);
@@ -114,6 +116,7 @@ public class WWKGActivity extends AppCompatActivity {
         rbOut = findViewById(R.id.wwkg_rbOut);
         btnok = findViewById(R.id.btn_ok);
         btndel = findViewById(R.id.btn_del);
+        btnclr = findViewById(R.id.btn_clear);
 
 
         poNo.setOnEditorActionListener(new TextView.OnEditorActionListener() {
@@ -210,6 +213,24 @@ public class WWKGActivity extends AppCompatActivity {
                 }
             }
         });
+        btnclr.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                try{
+                   clear();
+                   poNo.postDelayed(new Runnable() {
+                        @Override
+                        public void run() {
+                            poNo.requestFocus();
+                        }
+                        },1000);
+                    HelpUtil.SetMsg(tvMsg, Color.BLUE, "数据清除成功，请重新扫描单据");
+                }catch (Exception ex){
+                    ErrorMsg = ex.getMessage();
+                    handler.sendEmptyMessage(99);
+                }
+            }
+        });
 
 
 
@@ -432,6 +453,7 @@ public class WWKGActivity extends AppCompatActivity {
         poNo.setText("");
         poNo.requestFocus();
         datalist.clear();
+        poNo.setFocusable(true);
         smartTable.setData(datalist);
     }
 
diff --git a/app/src/main/res/layout/activity_wwkg.xml b/app/src/main/res/layout/activity_wwkg.xml
index 71e84cb..7359dcc 100644
--- a/app/src/main/res/layout/activity_wwkg.xml
+++ b/app/src/main/res/layout/activity_wwkg.xml
@@ -140,7 +140,12 @@
             android:gravity="center"
             android:orientation="horizontal"
             android:padding="2dp">
-
+            <Button
+                android:id="@+id/btn_clear"
+                android:layout_width="wrap_content"
+                android:layout_height="40dp"
+                android:layout_weight="1"
+                android:text="清除" />
             <Button
                 android:id="@+id/btn_del"
                 android:layout_width="wrap_content"