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移动端AI与ML应用开发:基于iOS和Android
book

移动端AI与ML应用开发:基于iOS和Android

by Laurence Moroney
January 2023
Intermediate to advanced
288 pages
6h 6m
Chinese
China Machine Press
Content preview from 移动端AI与ML应用开发:基于iOS和Android
Android
上使用
ML Kit
的计算机视觉应用程序
|
59
4-2
:资产文件夹中的图像
4.1.4
4
步:将图像加载到
ImageView
现在写一些代码!我们可以转到
MainActivity.kt
文件,并在其中添加一个扩展,让我们
从资产文件夹中作为位图来加载图像:
fun Context.assetsToBitmap(fileName: String): Bitmap?{
return try {
with(assets.open(fileName)){
BitmapFactory.decodeStream(this)
}
} catch (e: IOException) { null }
}
更新 Android Studio 为你制作的
onCreate
函数以根据其 ID 查找 ImageView 控件,并将
资产文件夹中的图像之一加载到其中:
val img: ImageView = findViewById(R.id.imageToLabel)
// assets folder image file name with extension
val fileName = "figure4-1.jpg"
// get bitmap from assets folder
val bitmap: Bitmap? = assetsToBitmap(fileName)
bitmap?.apply {
img.setImageBitmap(this)
}
你现在可以运行应用程序来测试它是否正确加载了图像 ...
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Publisher Resources

ISBN: 9787111713081