[修复] 书籍网络封面大图查看或保存 #419

app/src/main/java/io/legado/app/ui/widget/dialog/PhotoDialog.kt

@@ -1,8 +1,11 @@
 package io.legado.app.ui.widget.dialog
 
 import android.annotation.SuppressLint
+import android.graphics.Bitmap
+import android.graphics.drawable.BitmapDrawable
 import android.os.Bundle
 import android.view.View
+import android.view.ViewGroup
 import com.bumptech.glide.load.engine.DiskCacheStrategy
 import com.bumptech.glide.load.resource.bitmap.DownsampleStrategy
 import com.bumptech.glide.request.RequestOptions
@@ -15,7 +18,10 @@ import io.legado.app.help.glide.OkHttpModelLoader
 import io.legado.app.model.BookCover
 import io.legado.app.model.ImageProvider
 import io.legado.app.model.ReadBook
+import io.legado.app.utils.ImageSaveUtils.saveImageToGallery
+import io.legado.app.utils.toastOnUi
 import io.legado.app.utils.viewbindingdelegate.viewBinding
+import java.io.ByteArrayOutputStream
 
 /**
  * 显示图片
@@ -29,6 +35,13 @@ class PhotoDialog() : BaseBottomSheetDialogFragment(R.layout.dialog_photo_view)
         }
     }
 
+    override fun onStart() {
+        super.onStart()
+        val sheet = dialog
+            ?.findViewById<View>(com.google.android.material.R.id.design_bottom_sheet)
+        sheet?.layoutParams?.height = ViewGroup.LayoutParams.MATCH_PARENT
+    }
+
     private val binding by viewBinding(DialogPhotoViewBinding::bind)
 
     @SuppressLint("CheckResult")
@@ -59,6 +72,26 @@ class PhotoDialog() : BaseBottomSheetDialogFragment(R.layout.dialog_photo_view)
                 .downsample(DownsampleStrategy.NONE)
                 .into(binding.photoView)
         }
+        binding.photoView.setOnLongClickListener {
+            saveCurrentImage()
+            true
+        }
+    }
+
+    private fun saveCurrentImage() {
+        val drawable = binding.photoView.drawable ?: return
+        val bitmap = (drawable as? BitmapDrawable)?.bitmap ?: return
+
+        val byteArray = ByteArrayOutputStream().use { stream ->
+            bitmap.compress(Bitmap.CompressFormat.JPEG, 100, stream)
+            stream.toByteArray()
+        }
+
+        val success = saveImageToGallery(requireContext(), byteArray)
+
+        toastOnUi(
+            if (success) "已保存到相册" else "保存失败"
+        )
     }
 
 }