修正FileProvider取得的contentUri，在下次使用時失效的問題

app/src/main/java/com/ray650128/floatingwindow/ui/SettingActivity.kt

@@ -9,6 +9,7 @@ import android.os.Bundle
 import android.provider.MediaStore
 import android.util.Log
 import android.view.View
+import android.webkit.MimeTypeMap
 import android.widget.AdapterView
 import androidx.activity.result.contract.ActivityResultContracts
 import androidx.appcompat.app.AppCompatActivity
@@ -20,6 +21,7 @@ import com.ray650128.floatingwindow.utils.DensityUtil
 import com.ray650128.floatingwindow.utils.FloatingWindowHelperUtils
 import com.ray650128.floatingwindow.utils.PreferenceUtil
 import com.ray650128.floatingwindow.view.ValueEditor
+import java.io.File
 
 
 class SettingActivity : AppCompatActivity() {
@@ -52,15 +54,16 @@ class SettingActivity : AppCompatActivity() {
     private val galleryLauncher = registerForActivityResult(ActivityResultContracts.StartActivityForResult()) { result ->
         if (result.resultCode == Activity.RESULT_OK) {
             val data = result.data
-            imageUri = data?.data
+            val returnUri = data?.data ?: return@registerForActivityResult
+            imageUri = saveImageToCache(returnUri)
             Glide.with(this).load(imageUri).into(binding.imgPreview)
-            FloatingWindowHelperUtils.setIcon(windowIcon, imageUri)
+            FloatingWindowHelperUtils.setIcon(windowIcon, Uri.parse(imageUri))
             //workingCheckItemAdapter.setImageUri(currentPosition, currentUri)
             //checkPassButton()
         }
     }
 
-    private var imageUri: Uri? = null
+    private var imageUri: String? = null
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -72,7 +75,7 @@ class SettingActivity : AppCompatActivity() {
         yOffset = PreferenceUtil.yOffset
         windowGravity = FloatingWindowHelperUtils.GravityType.fromInt(PreferenceUtil.gravity)
         windowIcon = FloatingWindowHelperUtils.IconType.fromInt(PreferenceUtil.icon)
-        imageUri = if (PreferenceUtil.iconPath.isNullOrEmpty()) null else {
+        if (!PreferenceUtil.iconPath.isNullOrEmpty()) {
             Uri.parse(PreferenceUtil.iconPath)
         }
 
@@ -94,7 +97,7 @@ class SettingActivity : AppCompatActivity() {
                 onItemSelectedListener = object : AdapterView.OnItemSelectedListener {
                     override fun onItemSelected(parent: AdapterView<*>?, view: View?, position: Int, id: Long) {
                         windowIcon = FloatingWindowHelperUtils.IconType.fromIndex(position)
-                        FloatingWindowHelperUtils.setIcon(windowIcon, imageUri)
+                        FloatingWindowHelperUtils.setIcon(windowIcon, Uri.parse(imageUri))
                         if (windowIcon == FloatingWindowHelperUtils.IconType.CUSTOM) {
                             imgPreview.isVisible = true
                             btnPickPhoto.isVisible = true
@@ -205,7 +208,7 @@ class SettingActivity : AppCompatActivity() {
                 PreferenceUtil.yOffset = yOffset
                 PreferenceUtil.gravity = windowGravity.type
                 PreferenceUtil.icon = windowIcon.value
-                PreferenceUtil.iconPath = imageUri?.toString()
+                PreferenceUtil.iconPath = imageUri
                 finish()
             }
 
@@ -230,4 +233,23 @@ class SettingActivity : AppCompatActivity() {
         val intent = Intent(Intent.ACTION_PICK, MediaStore.Images.Media.INTERNAL_CONTENT_URI)
         galleryLauncher.launch(intent)
     }
+
+    private fun saveImageToCache(uri: Uri?): String? {
+        if (uri == null) return null
+        val inputStream = contentResolver.openInputStream(uri)
+        inputStream?.use { input ->
+            val extension = getFileExtension(uri.toString())
+            val outputFile = File(cacheDir, "custom.$extension")
+            outputFile.outputStream().use { output ->
+                input.copyTo(output)
+            }
+            return outputFile.absolutePath
+        }
+        return null
+    }
+
+    private fun getFileExtension(uri: String): String {
+        return MimeTypeMap.getSingleton().getExtensionFromMimeType(contentResolver.getType(Uri.parse(uri)))
+            ?: "jpg" // Default extension
+    }
 }