去除material以确保minSdk为21

app/build.gradle

@@ -26,6 +26,10 @@ android {
             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
         }
     }
+    buildFeatures {
+        resValues = true
+    }
+
     compileOptions {
         sourceCompatibility JavaVersion.VERSION_11
         targetCompatibility JavaVersion.VERSION_11
@@ -42,7 +46,6 @@ android {
 
 dependencies {
     implementation libs.appcompat
-    implementation libs.material
     testImplementation libs.junit
     androidTestImplementation libs.ext.junit
     androidTestImplementation libs.espresso.core

app/src/main/res/values-night/themes.xml

@@ -1,16 +1,11 @@
 <resources xmlns:tools="http://schemas.android.com/tools">
     <!-- Base application theme. -->
-    <style name="Theme._6dof" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
+    <style name="Theme._6dof" parent="Theme.AppCompat.DayNight.DarkActionBar">
         <!-- Primary brand color. -->
         <item name="colorPrimary">@color/purple_200</item>
-        <item name="colorPrimaryVariant">@color/purple_700</item>
-        <item name="colorOnPrimary">@color/black</item>
-        <!-- Secondary brand color. -->
-        <item name="colorSecondary">@color/teal_200</item>
-        <item name="colorSecondaryVariant">@color/teal_200</item>
-        <item name="colorOnSecondary">@color/black</item>
+        <item name="colorPrimaryDark">@color/purple_700</item>
+        <item name="colorAccent">@color/teal_200</item>
         <!-- Status bar color. -->
-        <item name="android:statusBarColor">?attr/colorPrimaryVariant</item>
-        <!-- Customize your theme here. -->
+        <item name="android:statusBarColor">@color/purple_700</item>
     </style>
-</resources>
+</resources>

app/src/main/res/values/themes.xml

@@ -1,16 +1,11 @@
 <resources xmlns:tools="http://schemas.android.com/tools">
     <!-- Base application theme. -->
-    <style name="Theme._6dof" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
+    <style name="Theme._6dof" parent="Theme.AppCompat.DayNight.DarkActionBar">
         <!-- Primary brand color. -->
         <item name="colorPrimary">@color/purple_500</item>
-        <item name="colorPrimaryVariant">@color/purple_700</item>
-        <item name="colorOnPrimary">@color/white</item>
-        <!-- Secondary brand color. -->
-        <item name="colorSecondary">@color/teal_200</item>
-        <item name="colorSecondaryVariant">@color/teal_700</item>
-        <item name="colorOnSecondary">@color/black</item>
+        <item name="colorPrimaryDark">@color/purple_700</item>
+        <item name="colorAccent">@color/teal_200</item>
         <!-- Status bar color. -->
-        <item name="android:statusBarColor">?attr/colorPrimaryVariant</item>
-        <!-- Customize your theme here. -->
+        <item name="android:statusBarColor">@color/purple_700</item>
     </style>
 </resources>

gradle.properties

@@ -19,13 +19,7 @@ android.useAndroidX=true
 # resources declared in the library itself and none from the library's dependencies,
 # thereby reducing the size of the R class for that library
 android.nonTransitiveRClass=true
-android.defaults.buildfeatures.resvalues=true
-android.sdk.defaultTargetSdkToCompileSdkIfUnset=false
-android.enableAppCompileTimeRClass=false
-android.usesSdkInManifest.disallowed=false
 android.uniquePackageNames=false
 android.dependency.useConstraints=true
 android.r8.strictFullModeForKeepRules=false
-android.r8.optimizedResourceShrinking=false
-android.builtInKotlin=false
-android.newDsl=false
+android.dependency.excludeLibraryComponentsFromConstraints=true

gradle/gradle-daemon-jvm.properties

@@ -0,0 +1,12 @@
+#This file is generated by updateDaemonJvm
+toolchainUrl.FREE_BSD.AARCH64=https\://api.foojay.io/disco/v3.0/ids/ec7520a1e057cd116f9544c42142a16b/redirect
+toolchainUrl.FREE_BSD.X86_64=https\://api.foojay.io/disco/v3.0/ids/4c4f879899012ff0a8b2e2117df03b0e/redirect
+toolchainUrl.LINUX.AARCH64=https\://api.foojay.io/disco/v3.0/ids/ec7520a1e057cd116f9544c42142a16b/redirect
+toolchainUrl.LINUX.X86_64=https\://api.foojay.io/disco/v3.0/ids/4c4f879899012ff0a8b2e2117df03b0e/redirect
+toolchainUrl.MAC_OS.AARCH64=https\://api.foojay.io/disco/v3.0/ids/73bcfb608d1fde9fb62e462f834a3299/redirect
+toolchainUrl.MAC_OS.X86_64=https\://api.foojay.io/disco/v3.0/ids/846ee0d876d26a26f37aa1ce8de73224/redirect
+toolchainUrl.UNIX.AARCH64=https\://api.foojay.io/disco/v3.0/ids/ec7520a1e057cd116f9544c42142a16b/redirect
+toolchainUrl.UNIX.X86_64=https\://api.foojay.io/disco/v3.0/ids/4c4f879899012ff0a8b2e2117df03b0e/redirect
+toolchainUrl.WINDOWS.AARCH64=https\://api.foojay.io/disco/v3.0/ids/9482ddec596298c84656d31d16652665/redirect
+toolchainUrl.WINDOWS.X86_64=https\://api.foojay.io/disco/v3.0/ids/39701d92e1756bb2f141eb67cd4c660e/redirect
+toolchainVersion=21

gradle/libs.versions.toml

@@ -4,14 +4,12 @@ junit = "4.13.2"
 junitVersion = "1.3.0"
 espressoCore = "3.7.0"
 appcompat = "1.7.1"
-material = "1.14.0"
 
 [libraries]
 junit = { group = "junit", name = "junit", version.ref = "junit" }
 ext-junit = { group = "androidx.test.ext", name = "junit", version.ref = "junitVersion" }
 espresso-core = { group = "androidx.test.espresso", name = "espresso-core", version.ref = "espressoCore" }
 appcompat = { group = "androidx.appcompat", name = "appcompat", version.ref = "appcompat" }
-material = { group = "com.google.android.material", name = "material", version.ref = "material" }
 
 [plugins]
 android-application = { id = "com.android.application", version.ref = "agp" }