Add method to setInfiniteRatio

Author: huangyu.hy

sample/src/main/java/com/tmall/ultraviewpager/sample/PagerActivity.java

@@ -102,6 +102,7 @@ protected void onCreate(Bundle savedInstanceState) {
                 ultraViewPager.setScrollMode(UltraViewPager.ScrollMode.HORIZONTAL);
                 adapter = new UltraPagerAdapter(false);
                 ultraViewPager.setAdapter(adapter);
+                ultraViewPager.setInfiniteRatio(100);
                 gravity_indicator = UltraViewPager.Orientation.HORIZONTAL;
                 break;
             case 2:

ultraviewpager/src/main/java/com/tmall/ultraviewpager/IUltraViewPagerFeature.java

@@ -70,7 +70,6 @@ interface IUltraViewPagerFeature {
     IUltraIndicatorBuilder initIndicator(int focusResId, int normalResId, int gravity);
 
     /**
-     *
      * @param focusBitmap  defines the bitmap when indicator is focused
      * @param normalBitmap defines the bitmap when indicator is in the default state (not focused).
      * @param gravity      specifies how to align the indicator. for example, using Gravity.BOTTOM | Gravity.RIGHT
@@ -79,14 +78,14 @@ interface IUltraViewPagerFeature {
     IUltraIndicatorBuilder initIndicator(Bitmap focusBitmap, Bitmap normalBitmap, int gravity);
 
     /**
-     *  Remove indicator
+     * Remove indicator
      */
     void disableIndicator();
 
     /**
      * Enable auto-scroll mode
      *
-     * @param intervalInMillis  The interval time to scroll in milliseconds.
+     * @param intervalInMillis The interval time to scroll in milliseconds.
      */
     void setAutoScroll(int intervalInMillis);
 
@@ -105,7 +104,7 @@ interface IUltraViewPagerFeature {
     /**
      * Supply a maximum width for this ViewPager.
      *
-     * @param width  width
+     * @param width width
      */
     void setMaxWidth(int width);
 
@@ -148,7 +147,7 @@ interface IUltraViewPagerFeature {
     void setMultiScreen(float ratio);
 
     /**
-     *  Adjust the height of the ViewPager to the height of child automatically.
+     * Adjust the height of the ViewPager to the height of child automatically.
      */
     void setAutoMeasureHeight(boolean status);
 
@@ -172,8 +171,15 @@ interface IUltraViewPagerFeature {
     /**
      * Set margins for this ViewPager
      *
-     * @param left the left margin in pixels
+     * @param left  the left margin in pixels
      * @param right the right margin in pixels
      */
     void setScrollMargin(int left, int right);
+
+    /**
+     * The items.size() would be scale to item.size()*infiniteRatio in fact
+     *
+     * @param infiniteRatio
+     */
+    void setInfiniteRatio(int infiniteRatio);
 }

ultraviewpager/src/main/java/com/tmall/ultraviewpager/UltraViewPager.java

@@ -448,4 +448,12 @@ private void stopTimer() {
         timer.removeCallbacksAndMessages(null);
         timer.listener = null;
     }
+
+    @Override
+    public void setInfiniteRatio(int infiniteRatio) {
+        if (viewPager.getAdapter() != null
+                && viewPager.getAdapter() instanceof UltraViewPagerAdapter) {
+            ((UltraViewPagerAdapter) viewPager.getAdapter()).setInfiniteRatio(infiniteRatio);
+        }
+    }
 }

ultraviewpager/src/main/java/com/tmall/ultraviewpager/UltraViewPagerAdapter.java

@@ -57,12 +57,14 @@ interface UltraViewPagerCenterListener {
     private float multiScrRatio = Float.NaN;
     private boolean hasCentered; //ensure that the first item is in the middle when enabling loop-mode
     private int scrWidth;
+    private int infiniteRatio;
     private UltraViewPagerCenterListener centerListener;
 
     private SparseArray viewArray = new SparseArray();
 
     public UltraViewPagerAdapter(PagerAdapter adapter) {
         this.adapter = adapter;
+        infiniteRatio = INFINITE_RATIO;
     }
 
     @Override
@@ -72,7 +74,7 @@ public int getCount() {
             if (adapter.getCount() == 0) {
                 count = 0;
             } else {
-                count = adapter.getCount() *INFINITE_RATIO;
+                count = adapter.getCount() * infiniteRatio;
             }
         } else {
             count = adapter.getCount();
@@ -262,4 +264,8 @@ boolean isEnableMultiScr() {
     void setCenterListener(UltraViewPagerCenterListener listener) {
         centerListener = listener;
     }
+
+    void setInfiniteRatio(int infiniteRatio) {
+        this.infiniteRatio = infiniteRatio;
+    }
 }