opt

foudations/mogo-commons/src/main/java/com/mogo/commons/utils/ViewPagerSpeedScroller.java

@@ -0,0 +1,63 @@
+package com.mogo.commons.utils;
+
+import android.content.Context;
+import android.view.animation.DecelerateInterpolator;
+import android.view.animation.Interpolator;
+import android.widget.Scroller;
+
+import java.lang.reflect.Field;
+
+public
+/**
+ * @author congtaowang
+ * @since 2020/10/19
+ *
+ * 描述
+ */
+class ViewPagerSpeedScroller extends Scroller {
+
+    private int mFixedDuration = 1500;
+
+    public ViewPagerSpeedScroller( Context context ) {
+        super( context );
+    }
+
+    public ViewPagerSpeedScroller( Context context, Interpolator interpolator ) {
+        super( context, interpolator );
+    }
+
+    public ViewPagerSpeedScroller( Context context, Interpolator interpolator, boolean flywheel ) {
+        super( context, interpolator, flywheel );
+    }
+
+    @Override
+    public void startScroll( int startX, int startY, int dx, int dy ) {
+        startScroll( startX, startY, dx, dy, mFixedDuration );
+    }
+
+    @Override
+    public void startScroll( int startX, int startY, int dx, int dy, int duration ) {
+        super.startScroll( startX, startY, dx, dy, mFixedDuration );
+    }
+
+    public void setFixedDuration( int duration ) {
+        this.mFixedDuration = duration;
+    }
+
+    public static void attach( Context context, Object pager, int duration ) {
+        try {
+            Field filed = pager.getClass().getDeclaredField( "mScroller" );
+            filed.setAccessible( true );
+            ViewPagerSpeedScroller scroller = new ViewPagerSpeedScroller( context, new DecelerateInterpolator() );
+            scroller.setFixedDuration( duration );
+            filed.set( pager, scroller );
+
+            Field field = pager.getClass().getDeclaredField( "mTouchSlop" );
+            field.setAccessible( true );
+            field.setInt( pager, 4 );
+        } catch ( Exception e ) {
+            e.printStackTrace();
+        }
+
+    }
+}