问题描述
我正在我的 SwiftUI 视图中搜索实际的图像内存。
我查看了这篇文章“https://www.swiftjectivec.com/optimizing-images/”
问题是我的 memgraph 区域 tyoe 中没有“Image IO”名称
SwiftUI 使用与 UIKit 不同的机制吗？
我猜 CoreAnimation 可能与 Image IO 相同，因为我听说 SwiftUI 使用 Metal 或没关系
REGION TYPE SIZE SIZE SIZE SIZE SIZE SIZE SIZE COUNT (non-coalesced)
=========== ======= ======== ===== ======= ======== ====== ===== =======
Activity Tracing 256K 32K 32K 0K 0K 32K 0K 1
CoreAnimation 12.9M 12.9M 12.9M 0K 0K 0K 0K 2
Foundation 16K 16K 16K 0K 0K 0K 0K 1
IOKit 16K 16K 16K 0K 0K 0K 0K 1
Kernel Alloc Once 32K 16K 16K 0K 0K 0K 0K 1
MALLOC guard page 128K 0K 0K 0K 0K 0K 0K 8
MALLOC Metadata 240K 224K 224K 0K 0K 0K 0K 11
MALLOC_LARGE 704K 704K 704K 0K 0K 0K 0K 7 see MALLOC ZONE table below
MALLOC_LARGE Metadata 16K 16K 16K 0K 0K 0K 0K 1 see MALLOC ZONE table below
MALLOC_NANO 512.0M 2320K 2304K 0K 0K 0K 0K 1 see MALLOC ZONE table below
MALLOC_SMALL 40.0M 560K 560K 0K 0K 0K 0K 5 see MALLOC ZONE table below
MALLOC_SMALL (empty) 16.0M 80K 80K 0K 0K 0K 0K 2 see MALLOC ZONE table below
MALLOC_TINY 9216K 368K 368K 0K 0K 0K 0K 9 see MALLOC ZONE table below
MALLOC_TINY (empty) 1024K 32K 32K 0K 0K 0K 0K 1 see MALLOC ZONE table below
Performance tool data 336K 336K 336K 0K 0K 0K 0K 4 not counted in TOTAL below
STACK GUARD 48K 0K 0K 0K 0K 0K 0K 3
Stack 2096K 128K 112K 0K 0K 0K 0K 3
Stack (reserved) 544K 0K 0K 0K 0K 0K 0K 1 reserved VM address space (unallocated)
Stack Guard 16K 0K 0K 0K 0K 0K 0K 1
VM_ALLOCATE 1280K 96K 96K 0K 0K 0K 0K 5
VM_ALLOCATE (reserved) 16K 0K 0K 0K 0K 0K 0K 1 reserved VM address space (unallocated)
__AUTH 2158K 2095K 346K 0K 0K 0K 0K 293
__AUTH_CONST 16.2M 9732K 2902K 0K 0K 0K 0K 417
__DATA 11.8M 6899K 1674K 0K 0K 0K 0K 412
__DATA_CONST 15.2M 10.1M 2597K 0K 0K 0K 0K 425
__data_dirTY 1680K 1309K 746K 0K 0K 0K 0K 346
__FONT_DATA 4K 0K 0K 0K 0K 0K 0K 1
__LINKEDIT 152.0M 24.9M 0K 0K 0K 0K 0K 16
__OBJC_CONST 3294K 3294K 965K 0K 0K 0K 0K 264
__OBJC_RO 71.2M 50.6M 0K 0K 0K 0K 0K 1
__OBJC_RW 2896K 1708K 12K 0K 0K 0K 0K 1
__TEXT 396.2M 192.5M 96K 0K 0K 0K 0K 445
__UNICODE 588K 576K 0K 0K 0K 0K 0K 1
mapped file 38.3M 6224K 48K 0K 0K 0K 0K 5
shared memory 192K 64K 64K 0K 0K 16K 0K 4
unused but dirty shlib __DATA 86.3M 32.6M 24.3M 0K 0K 0K 0K 778
=========== ======= ======== ===== ======= ======== ====== ===== =======
TOTAL 1.4G 359.2M 50.9M 0K 0K 48K 0K 3474
TOTAL,minus reserved VM space 1.4G 359.2M 50.9M 0K 0K 48K 0K 3474
VIRTUAL RESIDENT DIRTY SWAPPED ALLOCATION BYTES DIRTY+SWAP REGION
MALLOC ZONE SIZE SIZE SIZE SIZE COUNT ALLOCATED FRAG SIZE % FRAG COUNT
=========== ======= ========= ========= ========= ========= ========= ========= ====== ======
DefaultMallocZone_0x1005f8000 512.0M 2320K 2304K 0K 21657 1151K 1153K 51% 1
MallocHelperZone_0x1005f0000 54.7M 1600K 1600K 0K 379 1078K 522K 33% 20
QuartzCore_0x100ac0000 12.0M 160K 160K 0K 175 20K 140K 88% 5
=========== ======= ========= ========= ========= ========= ========= ========= ====== ======
TOTAL 578.7M 4080K 4064K 0K 22211 2249K 1815K 45% 26
这是这个单图应用的表情包
import SwiftUI
struct ContentView: View {
var body: some View {
Image(uiImage: fetchImage())
// .resizable()
// .frame(width: 92,height: 118,alignment: /*@START_MENU_TOKEN@*/.center/*@END_MENU_TOKEN@*/)
}
func fetchImage() -> UIImage {
let filePath = Bundle.main.path(forResource: "testimage",ofType: "png")!
_ = NSURL(fileURLWithPath: filePath)
let fileImage = UIImage(contentsOfFile: filePath)
return fileImage!
}
}
struct ContentView_Previews: PreviewProvider {
static var previews: some View {
ContentView()
}
}
如何找到这张单张图片的实际内存？
解决方法
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