feat(悬浮窗): 添加窗口大小调整功能并改进资源清理

- 新增右下角拖拽调整窗口大小的功能
- 改进onDestroy方法中的资源清理逻辑
- 添加窗口权限检查和安全异常处理
- 优化UI缩放和布局参数管理

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

@@ -370,8 +370,9 @@ class FloatingWindowService : Service() {
     }
     
     override fun onDestroy() {
-        super.onDestroy()
         floatingView?.let { windowManager?.removeView(it) }
         serviceInstance = null
+        methodChannel = null
+        super.onDestroy()
     }
-}
+}

local_plugins/native_plugin/android/src/main/kotlin/com/example/native_plugin/FloatingWindowService.kt

@@ -11,6 +11,7 @@ import android.os.Build
 import android.os.Handler
 import android.os.IBinder
 import android.os.Looper
+import android.provider.Settings
 import android.text.TextUtils
 import android.util.TypedValue
 import android.view.Gravity
@@ -59,9 +60,13 @@ class FloatingWindowService : Service() {
   private var expandedView: View? = null
   private var minimizedTextView: TextView? = null
   private var closeButton: TextView? = null
-  private var expandedContainer: LinearLayout? = null
+  private var expandedContainer: ViewGroup? = null
+  private var expandedContentLayout: LinearLayout? = null
+  private var resizeHandleView: View? = null
 
   private var baseExpandedWidth: Int = 0
+  private var lastEffectiveWidth: Int = 0
+  private var lastEffectiveHeight: Int = 0
   private var uiScale: Float = 1.0f
   private val backgroundBaseColor: Int = Color.argb(150, 40, 40, 40)
   private val uiHandler: Handler = Handler(Looper.getMainLooper())
@@ -90,14 +95,36 @@ class FloatingWindowService : Service() {
 
   override fun onDestroy() {
     stopAllLoading()
+    uiHandler.removeCallbacksAndMessages(null)
     removeFloatingWindow()
+    sourceTextView = null
+    translatedTextView = null
+    sourceLoadingView = null
+    translatedLoadingView = null
+    languageInfoView = null
+    minimizedView = null
+    expandedView = null
+    minimizedTextView = null
+    closeButton = null
+    resizeHandleView = null
+    expandedContentLayout = null
+    expandedContainer = null
+    layoutParams = null
+    windowManager = null
     serviceInstance = null
+    methodChannel = null
     super.onDestroy()
   }
 
   private fun createFloatingWindow() {
     windowManager = getSystemService(WINDOW_SERVICE) as? WindowManager ?: return
 
+    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M && !Settings.canDrawOverlays(this)) {
+      notifyStateChanged("hidden")
+      stopSelf()
+      return
+    }
+
     floatingView = createFloatingLayout()
     initViews()
     setupClickListeners()
@@ -122,7 +149,16 @@ class FloatingWindowService : Service() {
       y = dp(100)
     }
 
-    windowManager?.addView(floatingView, layoutParams)
+    try {
+      windowManager?.addView(floatingView, layoutParams)
+    } catch (_: SecurityException) {
+      notifyStateChanged("hidden")
+      stopSelf()
+      return
+    } catch (_: Exception) {
+      stopSelf()
+      return
+    }
     updateViewState(true)
   }
 
@@ -202,7 +238,7 @@ class FloatingWindowService : Service() {
   }
 
   private fun createExpandedView(): View {
-    val container = LinearLayout(this)
+    val root = FrameLayout(this)
     val maxWidth = dp(360)
     val minWidth = dp(280)
     val horizontalMargins = dp(8) * 2
@@ -212,19 +248,28 @@ class FloatingWindowService : Service() {
     val lp = FrameLayout.LayoutParams(targetWidth, ViewGroup.LayoutParams.WRAP_CONTENT)
     val margin = dp(8)
     lp.setMargins(margin, margin, margin, margin)
-    container.layoutParams = lp
+    root.layoutParams = lp
-    container.orientation = LinearLayout.VERTICAL
+    root.setPadding(0, 0, 0, 0)
-    container.setPadding(dp(16), dp(16), dp(16), dp(16))
+    root.visibility = View.GONE
-    container.visibility = View.GONE
+    root.elevation = dp(12).toFloat()
-    container.elevation = dp(12).toFloat()
+    expandedContainer = root
-    expandedContainer = container
 
     val bg = GradientDrawable().apply {
       setColor(backgroundBaseColor)
       cornerRadius = dp(16).toFloat()
       setStroke(dp(1), Color.argb(46, 255, 255, 255))
     }
-    container.background = bg
+    root.background = bg
+
+    val contentLayout = LinearLayout(this).apply {
+      orientation = LinearLayout.VERTICAL
+      setPadding(dp(16), dp(16), dp(16), dp(16))
+      layoutParams = FrameLayout.LayoutParams(
+        ViewGroup.LayoutParams.MATCH_PARENT,
+        ViewGroup.LayoutParams.WRAP_CONTENT
+      )
+    }
+    expandedContentLayout = contentLayout
 
     val titleRow = LinearLayout(this).apply {
       orientation = LinearLayout.HORIZONTAL
@@ -303,13 +348,101 @@ class FloatingWindowService : Service() {
     titleRow.addView(spacer, spacerLp)
     titleRow.addView(closeButton)
 
-    container.addView(titleRow)
+    contentLayout.addView(titleRow)
-    container.addView(sourceTextView)
+    contentLayout.addView(sourceTextView)
-    container.addView(sourceLoadingView)
+    contentLayout.addView(sourceLoadingView)
-    container.addView(translatedTextView)
+    contentLayout.addView(translatedTextView)
-    container.addView(translatedLoadingView)
+    contentLayout.addView(translatedLoadingView)
+    root.addView(contentLayout)
+
+    val handleSize = dp(30)
+    val resizeHandle = TextView(this).apply {
+      text = "⤢"
+      setTextColor(Color.argb(190, 255, 255, 255))
+      setTextSize(TypedValue.COMPLEX_UNIT_SP, 16f)
+      gravity = Gravity.CENTER
+      background = null
+      setPadding(0, 0, 0, 0)
+      scaleX = -1f
+    }
+    resizeHandleView = resizeHandle
+    val handleLp = FrameLayout.LayoutParams(handleSize, handleSize, Gravity.BOTTOM or Gravity.END).apply {
+      setMargins(0, 0, 0, 0)
+    }
+    root.addView(resizeHandle, handleLp)
+
+    resizeHandle.setOnTouchListener(object : View.OnTouchListener {
+      private var downRawX: Float = 0f
+      private var downRawY: Float = 0f
+      private var startWidth: Int = 0
+      private var startHeight: Int = 0
+
+      override fun onTouch(v: View, event: MotionEvent): Boolean {
+        val expanded = expandedContainer ?: return false
+        val rootLp = (expanded.layoutParams as? FrameLayout.LayoutParams) ?: return false
+        val size = v.width.takeIf { it > 0 } ?: return false
+        val localX = event.x
+        val localY = event.y
+        if (!isInBottomRightTriangle(localX, localY, size.toFloat())) {
+          return false
+        }
+
+        when (event.actionMasked) {
+          MotionEvent.ACTION_DOWN -> {
+            downRawX = event.rawX
+            downRawY = event.rawY
+            startWidth = if (rootLp.width > 0) rootLp.width else expanded.width.takeIf { it > 0 } ?: baseExpandedWidth
+            val resolvedHeight = if (rootLp.height > 0 && rootLp.height != ViewGroup.LayoutParams.WRAP_CONTENT) {
+              rootLp.height
+            } else {
+              expanded.height.takeIf { it > 0 } ?: dp(220)
+            }
+            rootLp.height = resolvedHeight
+            expanded.layoutParams = rootLp
+            startHeight = resolvedHeight
+            baseExpandedWidth = startWidth
+            return true
+          }
+
+          MotionEvent.ACTION_MOVE -> {
+            val dx = (event.rawX - downRawX).toInt()
+            val dy = (event.rawY - downRawY).toInt()
+            val minW = dp(240)
+            val maxW = (resources.displayMetrics.widthPixels - dp(8) * 2).coerceAtLeast(minW)
+            val minH = dp(140)
+            val maxH = (resources.displayMetrics.heightPixels - dp(12) * 2).coerceAtLeast(minH)
+
+            val nextW = (startWidth + dx).coerceIn(minW, maxW)
+            val nextH = (startHeight + dy).coerceIn(minH, maxH)
+            if (rootLp.width != nextW || rootLp.height != nextH) {
+              rootLp.width = nextW
+              rootLp.height = nextH
+              expanded.layoutParams = rootLp
+              baseExpandedWidth = nextW
+              floatingView?.post {
+                val wm = windowManager ?: return@post
+                val floatingLp = layoutParams ?: return@post
+                val (effectiveWidth, effectiveHeight) = getEffectiveFloatingSize()
+                val maxX = resources.displayMetrics.widthPixels - effectiveWidth
+                val maxY = resources.displayMetrics.heightPixels - effectiveHeight
+                if (maxX > 0) floatingLp.x = floatingLp.x.coerceIn(0, maxX)
+                if (maxY > 0) floatingLp.y = floatingLp.y.coerceIn(0, maxY)
+                wm.updateViewLayout(floatingView, floatingLp)
+              }
+            }
+            return true
+          }
+
+          MotionEvent.ACTION_UP,
+          MotionEvent.ACTION_CANCEL -> return true
+
+          else -> return false
+        }
+      }
+    })
+
     applyUiScale(uiScale)
-    return container
+    return root
   }
 
   private fun initViews() {
@@ -356,6 +489,9 @@ class FloatingWindowService : Service() {
             ) {
               return false
             }
+            if (!isMinimized && isTouchingView(resizeHandleView, event.rawX, event.rawY)) {
+              return false
+            }
 
             dragging = false
             scaling = false
@@ -363,7 +499,17 @@ class FloatingWindowService : Service() {
           }
 
           MotionEvent.ACTION_POINTER_DOWN -> {
-            if (event.pointerCount >= 2) {
+            if (!isMinimized && event.pointerCount >= 2) {
+              expandedContainer?.let { expanded ->
+                val expandedLp = expanded.layoutParams as? FrameLayout.LayoutParams
+                if (expandedLp != null && expandedLp.height == ViewGroup.LayoutParams.WRAP_CONTENT) {
+                  val lockedHeight = expanded.height.takeIf { it > 0 } ?: dp(220)
+                  expandedLp.height = lockedHeight
+                  expanded.layoutParams = expandedLp
+                }
+                val width = (expanded.layoutParams as? FrameLayout.LayoutParams)?.width ?: 0
+                if (width > 0) baseExpandedWidth = width
+              }
               scaling = true
               dragging = false
               initialSpan = pointerSpan(event)
@@ -379,18 +525,25 @@ class FloatingWindowService : Service() {
               if (initialSpan > 0f && span > 0f) {
                 val next = (initialScale * (span / initialSpan)).coerceIn(0.85f, 1.4f)
                 setUiScale(next)
+
+                val (effectiveWidth, effectiveHeight) = getEffectiveFloatingSize()
+                val maxX = resources.displayMetrics.widthPixels - effectiveWidth
+                val maxY = resources.displayMetrics.heightPixels - effectiveHeight
+                if (maxX > 0) lp.x = lp.x.coerceIn(0, maxX)
+                if (maxY > 0) lp.y = lp.y.coerceIn(0, maxY)
+                wm.updateViewLayout(floatingView, lp)
               }
               return true
             }
+
             val dx = (event.rawX - initialTouchX).toInt()
             val dy = (event.rawY - initialTouchY).toInt()
             if (!dragging && (kotlin.math.abs(dx) > threshold || kotlin.math.abs(dy) > threshold)) {
               dragging = true
             }
-            val maxX =
+            val (effectiveWidth, effectiveHeight) = getEffectiveFloatingSize()
-              resources.displayMetrics.widthPixels - (floatingView?.width ?: 0)
+            val maxX = resources.displayMetrics.widthPixels - effectiveWidth
-            val maxY =
+            val maxY = resources.displayMetrics.heightPixels - effectiveHeight
-              resources.displayMetrics.heightPixels - (floatingView?.height ?: 0)
             var nextX = initialX + dx
             var nextY = initialY + dy
             if (maxX > 0) nextX = nextX.coerceIn(0, maxX)
@@ -549,26 +702,70 @@ class FloatingWindowService : Service() {
     if (baseExpandedWidth <= 0) return
 
     languageInfoView?.setTextSize(TypedValue.COMPLEX_UNIT_SP, 12f * scale)
+    languageInfoView?.setPadding(
+      (dp(10) * scale).toInt().coerceIn(dp(6), dp(16)),
+      (dp(6) * scale).toInt().coerceIn(dp(4), dp(12)),
+      (dp(10) * scale).toInt().coerceIn(dp(6), dp(16)),
+      (dp(6) * scale).toInt().coerceIn(dp(4), dp(12))
+    )
     sourceTextView?.setTextSize(TypedValue.COMPLEX_UNIT_SP, 14f * scale)
     translatedTextView?.setTextSize(TypedValue.COMPLEX_UNIT_SP, 15f * scale)
     sourceLoadingView?.setTextSize(TypedValue.COMPLEX_UNIT_SP, 14f * scale)
     translatedLoadingView?.setTextSize(TypedValue.COMPLEX_UNIT_SP, 15f * scale)
 
-    val buttonTextSizeSp = (18f * scale).coerceIn(14f, 22f)
+    val closeTextSizeSp = (18f * scale).coerceIn(14f, 22f)
-    closeButton?.setTextSize(TypedValue.COMPLEX_UNIT_SP, buttonTextSizeSp)
+    closeButton?.setTextSize(TypedValue.COMPLEX_UNIT_SP, closeTextSizeSp)
 
     val closeHPad = (dp(8) * scale).toInt().coerceIn(dp(6), dp(16))
     val closeVPad = (dp(8) * scale).toInt().coerceIn(dp(4), dp(12))
     closeButton?.setPadding(closeHPad, closeVPad, closeHPad, closeVPad)
 
-    val padding = (dp(16) * scale).toInt().coerceIn(dp(12), dp(24))
+    container.setPadding(0, 0, 0, 0)
-    container.setPadding(padding, padding, padding, padding)
+    val contentPadding = (dp(16) * scale).toInt().coerceIn(dp(12), dp(24))
+    expandedContentLayout?.setPadding(contentPadding, contentPadding, contentPadding, contentPadding)
 
     val maxLines = if (scale >= 1.15f) 4 else 3
     sourceTextView?.maxLines = maxLines
     translatedTextView?.maxLines = maxLines
   }
 
+  private fun getEffectiveFloatingSize(): Pair<Int, Int> {
+    val view = floatingView
+    if (view != null) {
+      val w = view.width
+      val h = view.height
+      if (w > 0 && h > 0) {
+        lastEffectiveWidth = w
+        lastEffectiveHeight = h
+        return w to h
+      }
+    }
+
+    layoutParams?.let { lp ->
+      val w = lp.width
+      val h = lp.height
+      if (w > 0 && h > 0) {
+        lastEffectiveWidth = w
+        lastEffectiveHeight = h
+        return w to h
+      }
+    }
+
+    (expandedContainer?.layoutParams as? FrameLayout.LayoutParams)?.let { lp ->
+      val w = lp.width
+      val h = lp.height
+      if (w > 0 && h > 0) {
+        lastEffectiveWidth = w
+        lastEffectiveHeight = h
+        return w to h
+      }
+    }
+
+    if (lastEffectiveWidth <= 0) lastEffectiveWidth = dp(280)
+    if (lastEffectiveHeight <= 0) lastEffectiveHeight = dp(220)
+    return lastEffectiveWidth to lastEffectiveHeight
+  }
+
   private fun startSourceLoading() {
     val view = sourceLoadingView ?: return
     if (view.visibility == View.VISIBLE && sourceDotsRunnable != null) return
@@ -635,4 +832,9 @@ class FloatingWindowService : Service() {
     val dy = event.getY(0) - event.getY(1)
     return kotlin.math.sqrt(dx * dx + dy * dy)
   }
+
+  private fun isInBottomRightTriangle(x: Float, y: Float, size: Float): Boolean {
+    if (x < 0f || y < 0f || x > size || y > size) return false
+    return x >= size - y
+  }
 }