首页设备列表,上拉加载，下拉刷新

app/src/main/java/com/ckkj/water/custom/view/CustomRefreshHeader.java

@@ -32,6 +32,10 @@ public class CustomRefreshHeader extends RelativeLayout implements RefreshHeader
 
     private ImageView ivRefresh;
     private ObjectAnimator rotateAnimator;
+    // 用于 onMoving 中的动态效果
+    private float mLastPercent = 0f;
+    // 记录当前缩放值，避免重复设置
+    private float mCurrentScale = 1f;
 
     public CustomRefreshHeader(Context context) {
         super(context);
@@ -47,11 +51,14 @@ public class CustomRefreshHeader extends RelativeLayout implements RefreshHeader
         LayoutInflater.from(context).inflate(R.layout.view_refresh_header, this);
         ivRefresh = findViewById(R.id.ivRefresh);
 
+        // 开启硬件加速，提升动画性能
+        setLayerType(LAYER_TYPE_HARDWARE, null);
+
         // 初始化 ObjectAnimator
         rotateAnimator = ObjectAnimator.ofFloat(ivRefresh, "rotation", 0f, 360f);
         rotateAnimator.setDuration(1500);
         rotateAnimator.setRepeatCount(ValueAnimator.INFINITE);
-        rotateAnimator.setInterpolator(new LinearInterpolator()); // 匀速旋转
+        rotateAnimator.setInterpolator(new LinearInterpolator());
     }
 
     @NonNull
@@ -72,16 +79,36 @@ public class CustomRefreshHeader extends RelativeLayout implements RefreshHeader
     @Override
     public int onFinish(@NonNull RefreshLayout layout, boolean success) {
         if (rotateAnimator != null && rotateAnimator.isRunning()) {
-            // 为了平滑停止，先设置减速插值器，再 cancel 动画
             rotateAnimator.setInterpolator(new DecelerateInterpolator());
             postDelayed(() -> {
                 if (rotateAnimator != null) {
                     rotateAnimator.cancel();
-                    rotateAnimator.setInterpolator(new LinearInterpolator()); // 恢复为匀速
+                    rotateAnimator.setInterpolator(new LinearInterpolator());
                 }
-            }, 300); // 给一点缓冲时间
+            }, 300);
         }
-        return 500; // 动画停止后延迟 500ms 收起 Header
+        // 动画过渡回正常大小
+        animateToNormalScale();
+        return 500;
+    }
+
+    /**
+     * 平滑动画过渡回正常大小
+     */
+    private void animateToNormalScale() {
+        if (ivRefresh == null) return;
+
+        float startScale = mCurrentScale;
+        ValueAnimator scaleAnimator = ValueAnimator.ofFloat(startScale, 1f);
+        scaleAnimator.setDuration(300);
+        scaleAnimator.setInterpolator(new DecelerateInterpolator());
+        scaleAnimator.addUpdateListener(animation -> {
+            float value = (float) animation.getAnimatedValue();
+            ivRefresh.setScaleX(value);
+            ivRefresh.setScaleY(value);
+            mCurrentScale = value;
+        });
+        scaleAnimator.start();
     }
 
     // --- 必须实现的方法 ---
@@ -107,7 +134,24 @@ public class CustomRefreshHeader extends RelativeLayout implements RefreshHeader
 
     @SuppressLint("RestrictedApi")
     @Override
-    public void onMoving(boolean isDragging, float percent, int offset, int height, int maxDragHeight) {}
+    public void onMoving(boolean isDragging, float percent, int offset, int height, int maxDragHeight) {
+        // 只在拖动过程中处理，避免过度计算
+        if (percent != mLastPercent) {
+            mLastPercent = percent;
+
+            // 1. 动态缩放效果：从 0.5 放大到 1.2
+            // 使用 clamp 限制范围：percent 0~1 -> scale 0.5~1.2
+            float targetScale = 0.5f + (0.7f * Math.min(percent, 1.0f));
+            if (Math.abs(targetScale - mCurrentScale) > 0.01f) {
+                mCurrentScale = targetScale;
+                ivRefresh.setScaleX(targetScale);
+                ivRefresh.setScaleY(targetScale);
+            }
+
+            // 2. 透明度渐变效果（可选）
+            // ivRefresh.setAlpha(Math.min(percent * 1.5f, 1.0f));
+        }
+    }
 
     @SuppressLint("RestrictedApi")
     @Override
@@ -125,6 +169,10 @@ public class CustomRefreshHeader extends RelativeLayout implements RefreshHeader
     @SuppressLint("RestrictedApi")
     @Override
     public void onStateChanged(@NonNull RefreshLayout refreshLayout, @NonNull RefreshState oldState, @NonNull RefreshState newState) {
-
+        // 状态切换时平滑恢复
+        if (newState == RefreshState.PullDownCanceled) {
+            // 用户取消下拉，恢复到初始状态
+            animateToNormalScale();
+        }
     }
 }