feat(webview): 优化文件下载和图片选择功能

- 下载文件时在公共下载目录下创建应用名称子目录
- 实现支持多MIME类型的文件选择器合约
- 添加相机拍照功能并在图片选择时显示选项对话框
- 为Android 13+系统添加下载通知权限请求
- 重构文件选择逻辑以支持更灵活的MIME类型处理

sdk-core/src/main/java/com/xuqm/sdk/file/FileSDK.kt

@@ -162,9 +162,13 @@ object FileSDK {
             ?: "download.bin"
 
         val baseDir = when (destination) {
-            FileDownloadDestination.PublicDownloads ->
-                Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS)
-                    .apply { mkdirs() }
+            FileDownloadDestination.PublicDownloads -> {
+                val appName = context.applicationInfo.loadLabel(context.packageManager).toString()
+                File(
+                    Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS),
+                    appName,
+                ).apply { mkdirs() }
+            }
             FileDownloadDestination.Sandbox -> {
                 if (directoryName.isNullOrBlank()) {
                     context.getExternalFilesDir(null) ?: context.filesDir
@@ -243,8 +247,12 @@ object FileSDK {
         val bytes = android.util.Base64.decode(base64Data, android.util.Base64.DEFAULT)
         val baseDir = when (destination) {
             FileDownloadDestination.PublicDownloads -> {
+                val appName = context.applicationInfo.loadLabel(context.packageManager).toString()
+                File(
                     android.os.Environment.getExternalStoragePublicDirectory(
                         android.os.Environment.DIRECTORY_DOWNLOADS
+                    ),
+                    appName,
                 ).apply { mkdirs() }
             }
             FileDownloadDestination.Sandbox -> {

sdk-webview/src/main/java/com/xuqm/sdk/webview/XWebViewActivity.kt

@@ -54,9 +54,7 @@ class XWebViewActivity : ComponentActivity() {
         cb?.onReceiveValue(if (success && uri != null) arrayOf(uri) else null)
     }
 
-    private val pickContentLauncher = registerForActivityResult(
-        ActivityResultContracts.GetContent()
-    ) { uri ->
+    private val pickContentLauncher = registerForActivityResult(GetContentWithMimeTypes()) { uri ->
         val cb = pendingFileCallback
         pendingFileCallback = null
         cb?.onReceiveValue(if (uri != null) arrayOf(uri) else null)
@@ -83,6 +81,23 @@ class XWebViewActivity : ComponentActivity() {
         }
     }
 
+    private fun launchCamera() {
+        if (ContextCompat.checkSelfPermission(this, Manifest.permission.CAMERA) == PackageManager.PERMISSION_GRANTED) {
+            runCatching {
+                val imageFile = File.createTempFile("cam_", ".jpg", cacheDir)
+                val uri = FileProvider.getUriForFile(this, "${packageName}.fileprovider", imageFile)
+                pendingCameraUri = uri
+                takePictureLauncher.launch(uri)
+            }.onFailure {
+                pendingFileCallback?.onReceiveValue(null)
+                pendingFileCallback = null
+            }
+        } else {
+            shouldLaunchCamera = true
+            fileCameraPermissionLauncher.launch(Manifest.permission.CAMERA)
+        }
+    }
+
     @SuppressLint("SetJavaScriptEnabled")
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -136,26 +151,25 @@ class XWebViewActivity : ComponentActivity() {
                     pendingFileCallback?.onReceiveValue(null)
                     pendingFileCallback = filePathCallback
 
+                    val acceptMimes = resolvePickerMimeTypes(fileChooserParams.acceptTypes)
                     val isCameraCapture = fileChooserParams.isCaptureEnabled &&
                         fileChooserParams.acceptTypes.any { it.contains("image") }
+                    val isImageOnly = acceptMimes.all { it.startsWith("image/") || it == "image/*" }
 
-                    if (isCameraCapture) {
-                        if (ContextCompat.checkSelfPermission(this@XWebViewActivity, Manifest.permission.CAMERA) == PackageManager.PERMISSION_GRANTED) {
-                            runCatching {
-                                val imageFile = File.createTempFile("cam_", ".jpg", cacheDir)
-                                val uri = FileProvider.getUriForFile(this@XWebViewActivity, "${packageName}.fileprovider", imageFile)
-                                pendingCameraUri = uri
-                                takePictureLauncher.launch(uri)
-                            }.onFailure {
+                    when {
+                        isCameraCapture -> launchCamera()
+                        isImageOnly -> android.app.AlertDialog.Builder(this@XWebViewActivity)
+                            .setTitle("选择图片")
+                            .setItems(arrayOf("从相册选择", "拍照")) { _, which ->
+                                if (which == 0) pickContentLauncher.launch(arrayOf("image/*"))
+                                else launchCamera()
+                            }
+                            .setOnCancelListener {
                                 pendingFileCallback?.onReceiveValue(null)
                                 pendingFileCallback = null
                             }
-                        } else {
-                            shouldLaunchCamera = true
-                            fileCameraPermissionLauncher.launch(Manifest.permission.CAMERA)
-                        }
-                    } else {
-                        pickContentLauncher.launch(resolvePickerMimeType(fileChooserParams.acceptTypes))
+                            .show()
+                        else -> pickContentLauncher.launch(acceptMimes)
                     }
                     return true
                 }

sdk-webview/src/main/java/com/xuqm/sdk/webview/XWebViewView.kt

@@ -6,6 +6,7 @@ import android.content.Context
 import android.content.Intent
 import android.content.pm.PackageManager
 import android.net.Uri
+import android.os.Build
 import android.os.Handler
 import android.os.Looper
 import android.util.Base64
@@ -20,6 +21,7 @@ import android.webkit.WebViewClient
 import android.webkit.WebView
 import android.widget.FrameLayout
 import androidx.activity.compose.rememberLauncherForActivityResult
+import androidx.activity.result.contract.ActivityResultContract
 import androidx.activity.result.contract.ActivityResultContracts
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.DisposableEffect
@@ -31,6 +33,9 @@ import androidx.compose.runtime.rememberCoroutineScope
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.platform.LocalContext
+import androidx.compose.material3.AlertDialog
+import androidx.compose.material3.Text
+import androidx.compose.material3.TextButton
 import androidx.compose.ui.viewinterop.AndroidView
 import androidx.core.content.ContextCompat
 import androidx.core.content.FileProvider
@@ -42,12 +47,12 @@ import org.json.JSONObject
 import java.io.File
 import java.util.Locale
 
-// Maps HTML accept types (MIME or dot-prefixed extensions) to a single MIME for ACTION_GET_CONTENT.
-// Returns "*/*" when types are empty, mixed, or cannot be resolved.
-internal fun resolvePickerMimeType(acceptTypes: Array<String>): String {
+// Maps HTML accept types (MIME or dot-prefixed extensions) to an array of MIME strings for ACTION_GET_CONTENT.
+// Returns ["*/*"] when types are empty or cannot be resolved.
+internal fun resolvePickerMimeTypes(acceptTypes: Array<String>): Array<String> {
     val nonBlank = acceptTypes.filter { it.isNotBlank() }
-    if (nonBlank.isEmpty()) return "*/*"
-    val resolved = nonBlank.map { type ->
+    if (nonBlank.isEmpty()) return arrayOf("*/*")
+    return nonBlank.map { type ->
         if (type.startsWith(".")) {
             MimeTypeMap.getSingleton()
                 .getMimeTypeFromExtension(type.trimStart('.').lowercase(Locale.ROOT))
@@ -55,8 +60,24 @@ internal fun resolvePickerMimeType(acceptTypes: Array<String>): String {
         } else {
             type
         }
-    }.distinct()
-    return if (resolved.size == 1) resolved[0] else "*/*"
+    }.distinct().toTypedArray()
+}
+
+// ACTION_GET_CONTENT contract supporting multiple MIME types via EXTRA_MIME_TYPES.
+internal class GetContentWithMimeTypes : ActivityResultContract<Array<String>, Uri?>() {
+    override fun createIntent(context: Context, input: Array<String>): Intent =
+        Intent(Intent.ACTION_GET_CONTENT).apply {
+            addCategory(Intent.CATEGORY_OPENABLE)
+            if (input.size == 1) {
+                type = input[0]
+            } else {
+                type = "*/*"
+                putExtra(Intent.EXTRA_MIME_TYPES, input)
+            }
+        }
+
+    override fun parseResult(resultCode: Int, intent: Intent?): Uri? =
+        intent?.takeIf { resultCode == android.app.Activity.RESULT_OK }?.data
 }
 
 // JS injected into every page to bridge dialog APIs and download interception.
@@ -187,6 +208,11 @@ fun XWebViewView(
     var webView by remember { mutableStateOf<WebView?>(null) }
     var currentUrl by remember { mutableStateOf<String?>(config.url.ifBlank { null }) }
     val coroutineScope = rememberCoroutineScope()
+    var showImageSourceDialog by remember { mutableStateOf(false) }
+
+    val notificationPermissionLauncher = rememberLauncherForActivityResult(
+        ActivityResultContracts.RequestPermission()
+    ) { /* download continues regardless; notification skipped if denied */ }
 
     // Keep onMessage ref up-to-date across recompositions without recreating the bridge object.
     val onMessageRef = remember { mutableStateOf(config.onMessage) }
@@ -206,6 +232,12 @@ fun XWebViewView(
             "download" -> {
                 val url = payload.optString("url").takeIf { it.isNotBlank() } ?: return@handler
                 val filename = payload.optString("filename").takeIf { it.isNotBlank() }
+                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU &&
+                    config.downloadNotificationTitle != null &&
+                    ContextCompat.checkSelfPermission(context, Manifest.permission.POST_NOTIFICATIONS) != PackageManager.PERMISSION_GRANTED
+                ) {
+                    notificationPermissionLauncher.launch(Manifest.permission.POST_NOTIFICATIONS)
+                }
                 coroutineScope.launch(Dispatchers.IO) {
                     runCatching {
                         FileSDK.download(
@@ -279,9 +311,7 @@ fun XWebViewView(
         cb?.onReceiveValue(if (success && uri != null) arrayOf(uri) else null)
     }
 
-    val pickContentLauncher = rememberLauncherForActivityResult(
-        ActivityResultContracts.GetContent()
-    ) { uri ->
+    val pickContentLauncher = rememberLauncherForActivityResult(GetContentWithMimeTypes()) { uri ->
         val cb = pendingFileCallback.value
         pendingFileCallback.value = null
         cb?.onReceiveValue(if (uri != null) arrayOf(uri) else null)
@@ -319,6 +349,23 @@ fun XWebViewView(
         }
     }
 
+    val launchCamera: () -> Unit = {
+        if (ContextCompat.checkSelfPermission(context, Manifest.permission.CAMERA) == PackageManager.PERMISSION_GRANTED) {
+            runCatching {
+                val imageFile = File.createTempFile("cam_", ".jpg", context.cacheDir)
+                val uri = FileProvider.getUriForFile(context, "${context.packageName}.fileprovider", imageFile)
+                pendingCameraUri.value = uri
+                takePictureLauncher.launch(uri)
+            }.onFailure {
+                pendingFileCallback.value?.onReceiveValue(null)
+                pendingFileCallback.value = null
+            }
+        } else {
+            shouldLaunchCamera.value = true
+            fileCameraPermissionLauncher.launch(Manifest.permission.CAMERA)
+        }
+    }
+
     AndroidView(
         modifier = modifier,
         factory = { ctx ->
@@ -376,26 +423,15 @@ fun XWebViewView(
                         pendingFileCallback.value?.onReceiveValue(null)
                         pendingFileCallback.value = filePathCallback
 
+                        val acceptMimes = resolvePickerMimeTypes(fileChooserParams.acceptTypes)
                         val isCameraCapture = fileChooserParams.isCaptureEnabled &&
                             fileChooserParams.acceptTypes.any { it.contains("image") }
+                        val isImageOnly = acceptMimes.all { it.startsWith("image/") || it == "image/*" }
 
-                        if (isCameraCapture) {
-                            if (ContextCompat.checkSelfPermission(ctx, Manifest.permission.CAMERA) == PackageManager.PERMISSION_GRANTED) {
-                                runCatching {
-                                    val imageFile = File.createTempFile("cam_", ".jpg", ctx.cacheDir)
-                                    val uri = FileProvider.getUriForFile(ctx, "${ctx.packageName}.fileprovider", imageFile)
-                                    pendingCameraUri.value = uri
-                                    takePictureLauncher.launch(uri)
-                                }.onFailure {
-                                    pendingFileCallback.value?.onReceiveValue(null)
-                                    pendingFileCallback.value = null
-                                }
-                            } else {
-                                shouldLaunchCamera.value = true
-                                fileCameraPermissionLauncher.launch(Manifest.permission.CAMERA)
-                            }
-                        } else {
-                            pickContentLauncher.launch(resolvePickerMimeType(fileChooserParams.acceptTypes))
+                        when {
+                            isCameraCapture -> launchCamera()
+                            isImageOnly -> showImageSourceDialog = true
+                            else -> pickContentLauncher.launch(acceptMimes)
                         }
                         return true
                     }
@@ -423,6 +459,30 @@ fun XWebViewView(
         },
     )
 
+    if (showImageSourceDialog) {
+        AlertDialog(
+            onDismissRequest = {
+                showImageSourceDialog = false
+                pendingFileCallback.value?.onReceiveValue(null)
+                pendingFileCallback.value = null
+            },
+            title = { Text("选择图片") },
+            text = null,
+            confirmButton = {
+                TextButton(onClick = {
+                    showImageSourceDialog = false
+                    pickContentLauncher.launch(arrayOf("image/*"))
+                }) { Text("从相册选择") }
+            },
+            dismissButton = {
+                TextButton(onClick = {
+                    showImageSourceDialog = false
+                    launchCamera()
+                }) { Text("拍照") }
+            },
+        )
+    }
+
     SideEffect {
         val view = webView ?: return@SideEffect
         setXWebViewController(object : XWebViewController {