Lower minapi to Android 10

.idea/deploymentTargetDropDown.xml

@@ -1,17 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="deploymentTargetDropDown">
-    <runningDeviceTargetSelectedWithDropDown>
-      <Target>
-        <type value="RUNNING_DEVICE_TARGET" />
-        <deviceKey>
-          <Key>
-            <type value="SERIAL_NUMBER" />
-            <value value="ddb3e941" />
-          </Key>
-        </deviceKey>
-      </Target>
-    </runningDeviceTargetSelectedWithDropDown>
-    <timeTargetWasSelectedWithDropDown value="2022-11-16T17:56:56.695930200Z" />
-  </component>
-</project>

app/build.gradle

@@ -10,7 +10,7 @@ android {
 
     defaultConfig {
         applicationId "com.hnu.nanamail"
-        minSdk 31
+        minSdk 29
         targetSdk 33
         versionCode 101001
         versionName "1.1.0 Alpha"

app/src/main/java/com/hnu/nanamail/MainActivity.kt

@@ -1,9 +1,11 @@
 package com.hnu.nanamail
 
+import android.os.Build
 import android.os.Bundle
 import android.util.Log
 import androidx.activity.ComponentActivity
 import androidx.activity.compose.setContent
+import androidx.annotation.RequiresApi
 import androidx.compose.foundation.isSystemInDarkTheme
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.material3.MaterialTheme
@@ -22,12 +24,15 @@ import com.hnu.nanamail.ui.theme.NanaMailTheme
 import kotlinx.coroutines.*
 
 class MainActivity : ComponentActivity() {
+    @RequiresApi(Build.VERSION_CODES.R)
     @OptIn(DelicateCoroutinesApi::class)
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         // 用于沉浸式状态栏
         WindowCompat.setDecorFitsSystemWindows(window, false)
-        window.setDecorFitsSystemWindows(false)
+        if(Build.VERSION_CODES.R <= Build.VERSION.SDK_INT) {
+            window.setDecorFitsSystemWindows(false)
+        }
         // 从数据库读取用户信息
         GlobalScope.launch(Dispatchers.IO) {
             getUser()