处理UI

keyBoard/Class/AiTalk/VC/KBAIHomeVC.m

@@ -50,6 +50,7 @@
 @property (nonatomic, strong) UIView *bottomBackgroundView;
 @property (nonatomic, strong) UIVisualEffectView *bottomBlurEffectView;
 @property (nonatomic, strong) CAGradientLayer *bottomMaskLayer;
+@property (nonatomic, strong) CAGradientLayer *bottomGradientLayer;
 
 /// 语音转写管理器
 @property (nonatomic, strong) KBVoiceToTextManager *voiceToTextManager;
@@ -184,15 +185,15 @@ static NSString * const KBAISelectedPersonaIdKey = @"KBAISelectedPersonaId";
 
 - (void)viewDidLayoutSubviews {
     [super viewDidLayoutSubviews];
-    if (self.bottomMaskLayer) {
-        self.bottomMaskLayer.frame = self.bottomBlurEffectView.bounds;
+    if (self.bottomGradientLayer) {
+        self.bottomGradientLayer.frame = self.bottomBackgroundView.bounds;
     }
 }
 
 #pragma mark - 1：控件初始化
 
 - (void)setupUI {
-    self.voiceInputBarHeight = 52;
+    self.voiceInputBarHeight = 138;
     self.baseInputBarBottomSpacing = KB_TABBAR_HEIGHT;
     [self.view addSubview:self.collectionView];
     [self.collectionView mas_makeConstraints:^(MASConstraintMaker *make) {
@@ -891,32 +892,38 @@ static NSString * const KBAISelectedPersonaIdKey = @"KBAISelectedPersonaId";
     if (!_bottomBackgroundView) {
         _bottomBackgroundView = [[UIView alloc] init];
         _bottomBackgroundView.clipsToBounds = YES;
+        // 添加渐变遮罩层，实现从底部到顶部的渐变显示效果
+        _bottomBackgroundView.layer.mask = self.bottomGradientLayer;
     }
     return _bottomBackgroundView;
 }
 
 - (UIVisualEffectView *)bottomBlurEffectView {
     if (!_bottomBlurEffectView) {
-        UIBlurEffect *blurEffect = [UIBlurEffect effectWithStyle:UIBlurEffectStyleLight];
+        // 使用深色毛玻璃效果
+        UIBlurEffect *blurEffect = [UIBlurEffect effectWithStyle:UIBlurEffectStyleDark];
         _bottomBlurEffectView = [[UIVisualEffectView alloc] initWithEffect:blurEffect];
-        _bottomBlurEffectView.layer.mask = self.bottomMaskLayer;
+        _bottomBlurEffectView.alpha = 0.9; // 稍微降低整体透明度
     }
     return _bottomBlurEffectView;
 }
 
-- (CAGradientLayer *)bottomMaskLayer {
-    if (!_bottomMaskLayer) {
-        _bottomMaskLayer = [CAGradientLayer layer];
-        _bottomMaskLayer.startPoint = CGPointMake(0.5, 1);
-        _bottomMaskLayer.endPoint = CGPointMake(0.5, 0);
-        _bottomMaskLayer.colors = @[
-            (__bridge id)[UIColor whiteColor].CGColor,
-            (__bridge id)[UIColor whiteColor].CGColor,
-            (__bridge id)[UIColor clearColor].CGColor
+- (CAGradientLayer *)bottomGradientLayer {
+    if (!_bottomGradientLayer) {
+        _bottomGradientLayer = [CAGradientLayer layer];
+        // 从底部到顶部
+        _bottomGradientLayer.startPoint = CGPointMake(0.5, 1);
+        _bottomGradientLayer.endPoint = CGPointMake(0.5, 0);
+        // 作为遮罩层：底部完全不透明（白色），顶部完全透明（透明色）
+        // 中间位置开始渐变，让底部区域保持完整的毛玻璃效果
+        _bottomGradientLayer.colors = @[
+            (__bridge id)[UIColor whiteColor].CGColor,      // 底部：完全不透明
+            (__bridge id)[UIColor whiteColor].CGColor,      // 中间偏下：完全不透明
+            (__bridge id)[[UIColor whiteColor] colorWithAlphaComponent:0.0].CGColor  // 顶部：完全透明
         ];
-        _bottomMaskLayer.locations = @[@(0.0), @(0.5), @(1.0)];
+        _bottomGradientLayer.locations = @[@(0.0), @(0.4), @(1.0)];
     }
-    return _bottomMaskLayer;
+    return _bottomGradientLayer;
 }
 
 - (UIButton *)messageButton {