diff --git a/app/src/main/java/com/android_tetris/AboutUsScreen.kt b/app/src/main/java/com/android_tetris/AboutUsScreen.kt
index 2fd121b7932e9f394001e252a6bfdd2de8abffe8..a30254865f1ca0d18850044d3d4d0695b57c42ee 100644
--- a/app/src/main/java/com/android_tetris/AboutUsScreen.kt
+++ b/app/src/main/java/com/android_tetris/AboutUsScreen.kt
@@ -1,6 +1,5 @@
 package com.android_tetris
 
-import android_tetris.ui.theme.*
 import androidx.compose.foundation.*
 import androidx.compose.foundation.layout.*
 import androidx.compose.material.Button
diff --git a/app/src/main/java/com/android_tetris/MainActivity.kt b/app/src/main/java/com/android_tetris/MainActivity.kt
index 8227c33cd058ef883948b2c0977b888014b03e6f..53b7e1657f366c02cebf30a9a9291d4acc174463 100644
--- a/app/src/main/java/com/android_tetris/MainActivity.kt
+++ b/app/src/main/java/com/android_tetris/MainActivity.kt
@@ -16,7 +16,6 @@ import com.android_tetris.ui.theme.ComposeTetrisTheme
 // 屏幕间传递信息的变量类
 class ScreenToScreenInfo {
     var currentScreen by mutableStateOf(0)  // 初始为游戏页面
-    //var currentScreen by mutableStateOf(2)  // 初始为游戏页面
     var difficulty by mutableStateOf(500L)  // 难度选择
     var currentScore by mutableStateOf(0)   // 当前这局游戏的分数
     var highestScore by mutableStateOf(0)   // 历史最高分
@@ -46,11 +45,9 @@ class MainActivity : ComponentActivity() {
                     0 -> {
                         TetrisGameScreen()
                     }
-
                     1 -> {
                         SettingsScreen()
                     }
-
                     2 -> {
                         AboutUsScreen()
                     }
diff --git a/app/src/main/java/com/android_tetris/TetrisSettingScreen.kt b/app/src/main/java/com/android_tetris/TetrisSettingScreen.kt
index c68db6562ff3234a5fd525ad56e1fa751c858a6a..bfe0cb67eecee9aafd865fc4dbacc32daaa84a37 100644
--- a/app/src/main/java/com/android_tetris/TetrisSettingScreen.kt
+++ b/app/src/main/java/com/android_tetris/TetrisSettingScreen.kt
@@ -1,6 +1,5 @@
 package com.android_tetris
 
-import android_tetris.ui.theme.*
 import androidx.compose.foundation.background
 import androidx.compose.foundation.layout.*
 import androidx.compose.material.*
@@ -11,7 +10,6 @@ import androidx.compose.ui.text.font.FontWeight
 import androidx.constraintlayout.compose.ConstraintLayout
 import androidx.compose.ui.unit.*
 import androidx.lifecycle.viewmodel.compose.viewModel
-import com.android_tetris.ThemeViewModel
 import com.android_tetris.ui.theme.*
 import com.android_tetris.ui.theme.RadioSelectionButton
 import com.android_tetris.ui.theme.RectangularButton
diff --git a/app/src/main/java/com/android_tetris/ui/theme/Animation.kt b/app/src/main/java/com/android_tetris/ui/theme/Animation.kt
index f115f2ca854883a37c97987c01ce9f09e46d8615..1a46ffd281da8d20278c01122a6cc1da3f0eca4c 100644
--- a/app/src/main/java/com/android_tetris/ui/theme/Animation.kt
+++ b/app/src/main/java/com/android_tetris/ui/theme/Animation.kt
@@ -1,4 +1,4 @@
-package android_tetris.ui.theme
+package com.android_tetris.ui.theme
 
 import android.graphics.*
 import com.android_tetris.R
@@ -33,7 +33,6 @@ import androidx.compose.ui.res.imageResource
 import androidx.compose.ui.res.painterResource
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
-import com.android_tetris.ui.theme.ComposeTetrisTheme
 import kotlinx.coroutines.coroutineScope
 import kotlinx.coroutines.launch
 import kotlin.math.cos
@@ -41,14 +40,6 @@ import kotlin.math.pow
 import kotlin.math.sin
 import kotlin.math.sqrt
 
-@Composable
-fun DefaultPreview() {
-    ComposeTetrisTheme() {
-        PlanetMoon()
-    }
-}
-
-
 @Composable
 fun PlanetMoon() {
     val earthFloatAnimation by buildEarthFloatAnimation()