添加安卓悬浮窗可以拖动

android/app/src/main/kotlin/com/saitong/voitrans/FloatingWindowService.kt

@@ -19,6 +19,7 @@ class FloatingWindowService : Service() {
     private var windowManager: WindowManager? = null
     private var floatingView: View? = null
     private var isMinimized = true
+    private lateinit var layoutParams: WindowManager.LayoutParams
     
     private lateinit var sourceTextView: TextView
     private lateinit var translatedTextView: TextView
@@ -73,7 +74,7 @@ class FloatingWindowService : Service() {
         setupClickListeners()
         
         // 设置窗口参数
-        val layoutParams = WindowManager.LayoutParams().apply {
+        layoutParams = WindowManager.LayoutParams().apply {
             width = WindowManager.LayoutParams.WRAP_CONTENT
             height = WindowManager.LayoutParams.WRAP_CONTENT
             type = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
@@ -255,26 +256,12 @@ class FloatingWindowService : Service() {
     }
     
     private fun setupClickListeners() {
-        // 最小化状态点击展开
-        minimizedView.setOnClickListener {
-            isMinimized = false
-            updateViewState(false)
-            notifyStateChange("expanded")
-        }
-        
-        // 展开状态点击最小化
-        expandedView.setOnClickListener {
-            isMinimized = true
-            updateViewState(true)
-            notifyStateChange("minimized")
-        }
-        
         // 长按关闭
         floatingView!!.setOnLongClickListener {
             closeFloatingWindow()
             true
         }
-        
+
         // 拖拽功能
         setupDragListener()
     }
@@ -284,25 +271,40 @@ class FloatingWindowService : Service() {
         var initialY = 0
         var initialTouchX = 0f
         var initialTouchY = 0f
-        
+        var dragging = false
+        val threshold = (4 * resources.displayMetrics.density).toInt()
         floatingView!!.setOnTouchListener { _, event ->
             when (event.action) {
                 MotionEvent.ACTION_DOWN -> {
-                    val layoutParams = floatingView!!.layoutParams as WindowManager.LayoutParams
                     initialX = layoutParams.x
                     initialY = layoutParams.y
                     initialTouchX = event.rawX
                     initialTouchY = event.rawY
+                    dragging = false
                     true
                 }
                 MotionEvent.ACTION_MOVE -> {
-                    val layoutParams = floatingView!!.layoutParams as WindowManager.LayoutParams
-                    layoutParams.x = initialX + (event.rawX - initialTouchX).toInt()
-                    layoutParams.y = initialY + (event.rawY - initialTouchY).toInt()
+                    val dx = (event.rawX - initialTouchX).toInt()
+                    val dy = (event.rawY - initialTouchY).toInt()
+                    if (Math.abs(dx) > threshold || Math.abs(dy) > threshold) dragging = true
+                    val dm = resources.displayMetrics
+                    val maxX = dm.widthPixels - (floatingView?.width ?: 0)
+                    val maxY = dm.heightPixels - (floatingView?.height ?: 0)
+                    layoutParams.x = (initialX + dx).coerceIn(0, maxX)
+                    layoutParams.y = (initialY + dy).coerceIn(0, maxY)
                     windowManager?.updateViewLayout(floatingView, layoutParams)
                     true
                 }
-                else -> false
+                MotionEvent.ACTION_UP -> {
+                    if (!dragging) {
+                        isMinimized = !isMinimized
+                        updateViewState(isMinimized)
+                        notifyStateChange(if (isMinimized) "minimized" else "expanded")
+                    }
+                    dragging = false
+                    true
+                }
+                else -> true
             }
         }
     }
@@ -347,11 +349,10 @@ class FloatingWindowService : Service() {
         val x = intent.getIntExtra(EXTRA_X, 0)
         val y = intent.getIntExtra(EXTRA_Y, 0)
         
-        floatingView?.let { view ->
-            val layoutParams = view.layoutParams as WindowManager.LayoutParams
+        floatingView?.let {
             layoutParams.x = x
             layoutParams.y = y
-            windowManager?.updateViewLayout(view, layoutParams)
+            windowManager?.updateViewLayout(it, layoutParams)
         }
     }