添加左右抖动效果

app/src/main/java/com/unionmed/unionmedtv/utils/MyGridLayoutManager.java

@@ -1,9 +1,11 @@
 package com.unionmed.unionmedtv.utils;
 
+import android.animation.ValueAnimator;
 import android.content.Context;
 import android.util.AttributeSet;
 import android.util.Log;
 import android.view.View;
+import android.view.animation.CycleInterpolator;
 
 import androidx.recyclerview.widget.GridLayoutManager;
 
@@ -57,6 +59,7 @@ public class MyGridLayoutManager extends GridLayoutManager {
         switch (direction) {
             case View.FOCUS_DOWN:
                 if(currentPosition /getSpanCount() ==rowCount){
+                    jitter(getFocusedChild());
                     scrollToPosition(currentPosition);
                     return findViewByPosition(currentPosition);
                 }else if (currentPosition + getSpanCount() < count) {
@@ -69,7 +72,7 @@ public class MyGridLayoutManager extends GridLayoutManager {
                 }
                 break;
             case View.FOCUS_UP:
-                if (currentPosition % getSpanCount() == 0 && upView != null) {
+                if (currentPosition / getSpanCount() == 0 && upView != null) {
                     upView.requestFocus();
                 }else if (currentPosition - getSpanCount() < count) {
                     int nextRowFirstPosition1 = currentPosition - getSpanCount();
@@ -83,11 +86,13 @@ public class MyGridLayoutManager extends GridLayoutManager {
                     scrollToPosition(nextRowFirstPosition);
                     return findViewByPosition(nextRowFirstPosition);
                 } else if (currentPosition == count) {
+                    jitter(getFocusedChild());
                     return findViewByPosition(currentPosition);
                 }
                 break;
             case View.FOCUS_LEFT:
                 if (currentPosition == 0) {
+                    jitter(getFocusedChild());
                     return findViewByPosition(currentPosition);
                 } else if (currentPosition <=count) {
                     int nextRowFirstPosition = currentPosition - 1;
@@ -98,4 +103,18 @@ public class MyGridLayoutManager extends GridLayoutManager {
         }
         return super.onInterceptFocusSearch(focused, direction);
     }
+    //左右抖动效果
+    public void jitter(View view){
+        ValueAnimator shakeAnimator = ValueAnimator.ofFloat(0, 5);
+        shakeAnimator.setDuration(300);
+        shakeAnimator.setInterpolator(new CycleInterpolator(5));
+        shakeAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
+            @Override
+            public void onAnimationUpdate(ValueAnimator animation) {
+                float currentValue = (float) animation.getAnimatedValue();
+                view.setTranslationX(currentValue);
+            }
+        });
+        shakeAnimator.start();
+    }
 }