fxied one item swip cause crash

Author: uis

README.md

@@ -9,7 +9,7 @@
 ![效果图](/pic/demo20.gif)
 
 ### Use
-    implementation 'com.uis:stacklayout:0.1.0'
+    implementation 'com.uis:stacklayout:0.1.1'
 
 *Name*| *Descript*|*Value*
   -----|--------|---
@@ -88,8 +88,9 @@ stackEdgeModel|层叠位置|left/right
 *Version*| *Descript*|*Fixed*
 ----|----|----
 0.0.1|自动轮播，滑动从顶部移除，整体上浮|初始版本
-0.0.2|滑动从顶层加入，整体下沉|内部view点击事件
+0.0.2|滑动从顶层加入，整体下沉|fixed 内部view点击事件
 0.1.0|zoomX,zoomY呈等比数列|更改属性
+0.1.1|只有一条数据时|fixed
 
 ### Thanks
 

stacklayout/src/main/java/com/uis/stackview/StackHelper.java

@@ -101,7 +101,7 @@ void layoutChild(){
         if(needRelayout && layout != null) {
             needRelayout = false;
             int childSize = layout.getChildCount();
-            int stackSize = layout.stackSize;
+            int stackSize = layout.getRealStackSize();
             int realSize = layout.getRealStackSize();
             for (int i = 0; i < childSize; i++) {
                 int top, bottom, left, right, pivot;
@@ -301,9 +301,10 @@ void setAutoPlay(boolean looper){
     /** 加入底层 */
     private void addBottomView(){
         int cnt = layout.getAdapter().getItemCount();
+        int stackSize = layout.getRealStackSize();
         displayPosition += 1;
         displayPosition %= cnt;
-        int index = (layout.stackSize - 1 + displayPosition) % cnt;
+        int index = (stackSize - 1 + displayPosition) % cnt;
         View view = getStackView();
         layout.getAdapter().onBindView(view, index);
         needRelayout = true;

stacklayout/src/main/java/com/uis/stackview/StackLayout.java

@@ -75,6 +75,9 @@ protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
         int width = getDefaultSize(getSuggestedMinimumWidth(), widthMeasureSpec);
         int height = MeasureSpec.EXACTLY != MeasureSpec.getMode(heightMeasureSpec) ? width/2
                 : getDefaultSize(getSuggestedMinimumHeight(),heightMeasureSpec);
+        if(!isInEditMode() && (adapter == null || adapter.getItemCount() == 0)){
+            height = 0;
+        }
         setMeasuredDimension(width,height);
         if(adapter != null) {
             stackHelper.measureChild(width,height);