diff --git a/app/src/androidTest/java/cc/niushuai/dididone/ExampleInstrumentedTest.java b/app/src/androidTest/java/cc/niushuai/dididone/ExampleInstrumentedTest.java
index 7bd321a..735cf47 100644
--- a/app/src/androidTest/java/cc/niushuai/dididone/ExampleInstrumentedTest.java
+++ b/app/src/androidTest/java/cc/niushuai/dididone/ExampleInstrumentedTest.java
@@ -1,15 +1,15 @@
 package cc.niushuai.dididone;
 
+import static org.junit.Assert.assertEquals;
+
 import android.content.Context;
 
-import androidx.test.platform.app.InstrumentationRegistry;
 import androidx.test.ext.junit.runners.AndroidJUnit4;
+import androidx.test.platform.app.InstrumentationRegistry;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
-import static org.junit.Assert.*;
-
 /**
  * Instrumented test, which will execute on an Android device.
  *
diff --git a/app/src/main/java/cc/niushuai/dididone/MainActivity.java b/app/src/main/java/cc/niushuai/dididone/MainActivity.java
index a35744d..65024eb 100644
--- a/app/src/main/java/cc/niushuai/dididone/MainActivity.java
+++ b/app/src/main/java/cc/niushuai/dididone/MainActivity.java
@@ -1,18 +1,18 @@
 package cc.niushuai.dididone;
 
 import android.os.Bundle;
-import android.view.View;
 import android.view.Menu;
+import android.view.View;
 
-import com.google.android.material.snackbar.Snackbar;
-import com.google.android.material.navigation.NavigationView;
-
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.drawerlayout.widget.DrawerLayout;
 import androidx.navigation.NavController;
 import androidx.navigation.Navigation;
 import androidx.navigation.ui.AppBarConfiguration;
 import androidx.navigation.ui.NavigationUI;
-import androidx.drawerlayout.widget.DrawerLayout;
-import androidx.appcompat.app.AppCompatActivity;
+
+import com.google.android.material.navigation.NavigationView;
+import com.google.android.material.snackbar.Snackbar;
 
 import cc.niushuai.dididone.databinding.ActivityMainBinding;
 
diff --git a/app/src/main/res/values-night/themes.xml b/app/src/main/res/values-night/themes.xml
index 35292eb..011e340 100644
--- a/app/src/main/res/values-night/themes.xml
+++ b/app/src/main/res/values-night/themes.xml
@@ -1,4 +1,4 @@
-<resources xmlns:tools="http://schemas.android.com/tools">
+<resources>
     <!-- Base application theme. -->
     <style name="Theme.DiDiDone" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
         <!-- Primary brand color. -->
diff --git a/app/src/main/res/values/themes.xml b/app/src/main/res/values/themes.xml
index 14ba2f7..24ef365 100644
--- a/app/src/main/res/values/themes.xml
+++ b/app/src/main/res/values/themes.xml
@@ -1,4 +1,4 @@
-<resources xmlns:tools="http://schemas.android.com/tools">
+<resources>
     <!-- Base application theme. -->
     <style name="Theme.DiDiDone" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
         <!-- Primary brand color. -->
diff --git a/app/src/test/java/cc/niushuai/dididone/ExampleUnitTest.java b/app/src/test/java/cc/niushuai/dididone/ExampleUnitTest.java
index 2ee50e7..fb5dd4f 100644
--- a/app/src/test/java/cc/niushuai/dididone/ExampleUnitTest.java
+++ b/app/src/test/java/cc/niushuai/dididone/ExampleUnitTest.java
@@ -1,8 +1,8 @@
 package cc.niushuai.dididone;
 
-import org.junit.Test;
+import static org.junit.Assert.assertEquals;
 
-import static org.junit.Assert.*;
+import org.junit.Test;
 
 /**
  * Example local unit test, which will execute on the development machine (host).