diff --git a/library/src/main/java/com/cundong/recyclerview/ExStaggeredGridLayoutManager.java b/library/src/main/java/com/cundong/recyclerview/ExStaggeredGridLayoutManager.java
index 7b3c441..e1d06ba 100644
--- a/library/src/main/java/com/cundong/recyclerview/ExStaggeredGridLayoutManager.java
+++ b/library/src/main/java/com/cundong/recyclerview/ExStaggeredGridLayoutManager.java
@@ -5,6 +5,8 @@
 import android.support.v7.widget.StaggeredGridLayoutManager;
 import android.view.View;
 
+import java.util.logging.Logger;
+
 /**
  * Created by cundong on 2015/10/9.
  * <p/>
@@ -12,6 +14,7 @@
  */
 public class ExStaggeredGridLayoutManager extends StaggeredGridLayoutManager {
 
+    private static final Logger LOGGER=Logger.getLogger(ExStaggeredGridLayoutManager.class.getName());
     private final String TAG = getClass().getSimpleName();
 
     GridLayoutManager.SpanSizeLookup mSpanSizeLookup;
@@ -60,7 +63,7 @@ public void onMeasure(RecyclerView.Recycler recycler, RecyclerView.State state,
                     }
                     // recycler.recycleView(view);
                 } catch (Exception e) {
-                    e.printStackTrace();
+                    LOGGER.warning(e.toString());
                 }
             }
         }
diff --git a/sample/src/main/java/com/cundong/recyclerview/sample/EndlessGridLayoutActivity.java b/sample/src/main/java/com/cundong/recyclerview/sample/EndlessGridLayoutActivity.java
index d3b1f4d..5056639 100644
--- a/sample/src/main/java/com/cundong/recyclerview/sample/EndlessGridLayoutActivity.java
+++ b/sample/src/main/java/com/cundong/recyclerview/sample/EndlessGridLayoutActivity.java
@@ -26,6 +26,7 @@
 
 import java.lang.ref.WeakReference;
 import java.util.ArrayList;
+import java.util.logging.Logger;
 
 /**
  * Created by cundong on 2015/10/29.
@@ -34,6 +35,7 @@
  */
 public class EndlessGridLayoutActivity extends AppCompatActivity {
 
+    private static final Logger LOGGER= Logger.getLogger(EndlessGridLayoutActivity.class.getName());
     /**服务器端一共多少条数据*/
     private static final int TOTAL_COUNTER = 64;
 
@@ -177,7 +179,7 @@ public void run() {
                 try {
                     Thread.sleep(1000);
                 } catch (InterruptedException e) {
-                    e.printStackTrace();
+                   LOGGER.warning(e.toString());
                 }
 
                 //模拟一下网络请求失败的情况
diff --git a/sample/src/main/java/com/cundong/recyclerview/sample/EndlessLinearLayoutActivity.java b/sample/src/main/java/com/cundong/recyclerview/sample/EndlessLinearLayoutActivity.java
index e06722d..ee8427c 100644
--- a/sample/src/main/java/com/cundong/recyclerview/sample/EndlessLinearLayoutActivity.java
+++ b/sample/src/main/java/com/cundong/recyclerview/sample/EndlessLinearLayoutActivity.java
@@ -25,6 +25,7 @@
 
 import java.lang.ref.WeakReference;
 import java.util.ArrayList;
+import java.util.logging.Logger;
 
 /**
  * Created by cundong on 2015/10/29.
@@ -33,6 +34,7 @@
  */
 public class EndlessLinearLayoutActivity extends AppCompatActivity {
 
+    private static final Logger LOGGER= Logger.getLogger(EndlessLinearLayoutActivity.class.getName());
     /**服务器端一共多少条数据*/
     private static final int TOTAL_COUNTER = 64;
 
@@ -183,7 +185,7 @@ public void run() {
                 try {
                     Thread.sleep(1000);
                 } catch (InterruptedException e) {
-                    e.printStackTrace();
+                    LOGGER.warning(e.toString());
                 }
 
                 //模拟一下网络请求失败的情况
diff --git a/sample/src/main/java/com/cundong/recyclerview/sample/EndlessStaggeredGridLayoutActivity.java b/sample/src/main/java/com/cundong/recyclerview/sample/EndlessStaggeredGridLayoutActivity.java
index 9f1d317..68a4d4c 100644
--- a/sample/src/main/java/com/cundong/recyclerview/sample/EndlessStaggeredGridLayoutActivity.java
+++ b/sample/src/main/java/com/cundong/recyclerview/sample/EndlessStaggeredGridLayoutActivity.java
@@ -27,6 +27,7 @@
 
 import java.lang.ref.WeakReference;
 import java.util.ArrayList;
+import java.util.logging.Logger;
 
 /**
  * Created by cundong on 2015/10/29.
@@ -35,6 +36,7 @@
  */
 public class EndlessStaggeredGridLayoutActivity extends AppCompatActivity {
 
+    private static final Logger LOGGER= Logger.getLogger(EndlessStaggeredGridLayoutActivity.class.getName());
     /**服务器端一共多少条数据*/
     private static final int TOTAL_COUNTER = 64;
 
@@ -178,7 +180,7 @@ public void run() {
                 try {
                     Thread.sleep(1000);
                 } catch (InterruptedException e) {
-                    e.printStackTrace();
+                    LOGGER.warning(e.toString());
                 }
 
                 //模拟一下网络请求失败的情况