自定义图标

android/app/src/main/AndroidManifest.xml

@@ -17,11 +17,38 @@
               android:name="io.flutter.embedding.android.NormalTheme"
               android:resource="@style/NormalTheme"
               />
+        </activity>
+        
+        <!-- 图标1: 默认图标 -->
+        <activity-alias
+            android:name=".MainActivityIcon1"
+            android:targetActivity=".MainActivity"
+            android:enabled="true"
+            android:exported="true"
+            android:icon="@mipmap/ic_launcher"
+            android:roundIcon="@mipmap/ic_launcher"
+            android:label="MookNote">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN"/>
                 <category android:name="android.intent.category.LAUNCHER"/>
             </intent-filter>
-        </activity>
+        </activity-alias>
+        
+        <!-- 图标2: 风格二 -->
+        <activity-alias
+            android:name=".MainActivityIcon2"
+            android:targetActivity=".MainActivity"
+            android:enabled="false"
+            android:exported="true"
+            android:icon="@mipmap/ic_launcher2"
+            android:roundIcon="@mipmap/ic_launcher2"
+            android:label="MookNote">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN"/>
+                <category android:name="android.intent.category.LAUNCHER"/>
+            </intent-filter>
+        </activity-alias>
+        
         <meta-data
             android:name="flutterEmbedding"
             android:value="2" />

android/app/src/main/kotlin/top/iletter/mooknote/MainActivity.kt

@@ -1,5 +1,62 @@
 package top.iletter.mooknote
 
+import android.content.ComponentName
+import android.content.pm.PackageManager
 import io.flutter.embedding.android.FlutterActivity
+import io.flutter.embedding.engine.FlutterEngine
+import io.flutter.plugin.common.MethodChannel
 
-class MainActivity : FlutterActivity()
+class MainActivity : FlutterActivity() {
+
+    private val CHANNEL = "top.iletter.mooknote/icon"
+
+    override fun configureFlutterEngine(flutterEngine: FlutterEngine) {
+        super.configureFlutterEngine(flutterEngine)
+
+        MethodChannel(flutterEngine.dartExecutor.binaryMessenger, CHANNEL).setMethodCallHandler { call, result ->
+            when (call.method) {
+                "switchIcon" -> {
+                    val iconName = call.argument<String>("iconName")
+                    if (iconName != null) {
+                        switchLauncherIcon(iconName)
+                        result.success(true)
+                    } else {
+                        result.error("INVALID_ARGUMENT", "iconName is required", null)
+                    }
+                }
+                "getCurrentIcon" -> {
+                    result.success(getCurrentIcon())
+                }
+                else -> result.notImplemented()
+            }
+        }
+    }
+
+    private fun switchLauncherIcon(iconName: String) {
+        val pm = packageManager
+        val icon1 = ComponentName(this, "${packageName}.MainActivityIcon1")
+        val icon2 = ComponentName(this, "${packageName}.MainActivityIcon2")
+
+        when (iconName) {
+            "app_icon2" -> {
+                pm.setComponentEnabledSetting(icon1, PackageManager.COMPONENT_ENABLED_STATE_DISABLED, PackageManager.DONT_KILL_APP)
+                pm.setComponentEnabledSetting(icon2, PackageManager.COMPONENT_ENABLED_STATE_ENABLED, PackageManager.DONT_KILL_APP)
+            }
+            else -> {
+                pm.setComponentEnabledSetting(icon2, PackageManager.COMPONENT_ENABLED_STATE_DISABLED, PackageManager.DONT_KILL_APP)
+                pm.setComponentEnabledSetting(icon1, PackageManager.COMPONENT_ENABLED_STATE_ENABLED, PackageManager.DONT_KILL_APP)
+            }
+        }
+    }
+
+    private fun getCurrentIcon(): String {
+        val pm = packageManager
+        val icon1 = ComponentName(this, "${packageName}.MainActivityIcon1")
+        val icon2 = ComponentName(this, "${packageName}.MainActivityIcon2")
+
+        return when {
+            pm.getComponentEnabledSetting(icon2) == PackageManager.COMPONENT_ENABLED_STATE_ENABLED -> "app_icon2"
+            else -> "app_icon"
+        }
+    }
+}