diff --git a/app/src/main/java/com/mirkowu/mvm/ui/mvvm/viewbinding/DataBindingFragment.kt b/app/src/main/java/com/mirkowu/mvm/ui/mvvm/viewbinding/DataBindingFragment.kt
index 47a8c43..c532c3f 100644
--- a/app/src/main/java/com/mirkowu/mvm/ui/mvvm/viewbinding/DataBindingFragment.kt
+++ b/app/src/main/java/com/mirkowu/mvm/ui/mvvm/viewbinding/DataBindingFragment.kt
@@ -233,10 +233,10 @@ class DataBindingFragment : BaseFragment<MVVMMediator>() {
 
         //todo 方式2
         mMediator.getPing2LiveData().observeRequest(this) {
-            onLoading { }
+            onLoading {showLoadingDialog("")}
             onSuccess { }
             onFailure { }
-            onFinish { }
+            onFinish { hideLoadingDialog()}
         }
 
     }
diff --git a/lib_base/src/main/java/com/mirkowu/lib_base/activity/BaseMVMActivity.java b/lib_base/src/main/java/com/mirkowu/lib_base/activity/BaseMVMActivity.java
index 0b96f96..7d84e90 100644
--- a/lib_base/src/main/java/com/mirkowu/lib_base/activity/BaseMVMActivity.java
+++ b/lib_base/src/main/java/com/mirkowu/lib_base/activity/BaseMVMActivity.java
@@ -22,6 +22,7 @@
 import com.mirkowu.lib_widget.dialog.LoadingDialog;
 
 import java.lang.reflect.Method;
+import java.util.concurrent.atomic.AtomicInteger;
 
 /**
  * 更多可配置的
@@ -32,6 +33,8 @@ public abstract class BaseMVMActivity<M extends BaseMediator> extends AppCompatA
     protected M mMediator;
     private LoadingDialog mLoadingDialog;
 
+    private AtomicInteger mLoading = new AtomicInteger(0);
+
 
     @Override
     protected void onCreate(@Nullable Bundle savedInstanceState) {
@@ -95,12 +98,13 @@ public void showLoadingDialog(final String msg) {
         runOnUiThread(new Runnable() {
             @Override
             public void run() {
-                if (mLoadingDialog != null && mLoadingDialog.isVisible()) {
+                if (mLoading.getAndIncrement() != 0 && mLoadingDialog != null) {
                     mLoadingDialog.setMessage(msg);
                     return;
                 }
-                mLoadingDialog = new LoadingDialog(msg);
-                if (!isFinishing() && !mLoadingDialog.isVisible()) {
+
+                if (!isFinishing()) {
+                    mLoadingDialog = new LoadingDialog(msg);
                     mLoadingDialog.showAllowingStateLoss(getSupportFragmentManager());
                 }
             }
@@ -112,7 +116,7 @@ public void hideLoadingDialog() {
         runOnUiThread(new Runnable() {
             @Override
             public void run() {
-                if (mLoadingDialog != null) {
+                if (mLoading.decrementAndGet() == 0 && mLoadingDialog != null) {
                     mLoadingDialog.dismissAllowingStateLoss();
                     mLoadingDialog = null;
                 }
diff --git a/lib_util/src/main/java/com/mirkowu/lib_util/livedata/SingleLiveData.java b/lib_util/src/main/java/com/mirkowu/lib_util/livedata/SingleLiveData.java
index dd25f98..a3461dd 100644
--- a/lib_util/src/main/java/com/mirkowu/lib_util/livedata/SingleLiveData.java
+++ b/lib_util/src/main/java/com/mirkowu/lib_util/livedata/SingleLiveData.java
@@ -19,6 +19,14 @@ public class SingleLiveData<T> extends MutableLiveData<T> {
 
     private final AtomicBoolean mPending = new AtomicBoolean(false);
 
+    public SingleLiveData() {
+        super();
+    }
+
+    public SingleLiveData(T value) {
+        super(value);
+    }
+
     @MainThread
     public void observe(LifecycleOwner owner, final Observer<? super T> observer) {