如何将字节读入字节数组？在java中，我将字节数组初始化为byte[] b = new byte[100]，然后将其传递给相应的方法.然而在Kotlin中，我无法用缓冲区应该有多少字节来初始化ByteArray.
In other words, how do I use this function?: https://developer.android.com/reference/kotlin/java/io/RandomAccessFile#read(kotlin.ByteArray)
最简单的方法是使用
File("aaa").readBytes()
那个人会把整个文件读到ByteArray.但是您应该小心地知道堆中有足够的RAM来执行此操作
The ByteArray can be created via ByteArray(100) call, where 100 is the size of it
For the RandomAccessFile, it is probably better to use at the readFully function, which reads exactly the requested amount of bytes.
The classic approach is possible to read a file by chunks, e.g.
val buff = ByteArray(1230)
File("aaa").inputStream().buffered().use { input ->
while(true) {
val sz = input.read(buff)
if (sz <= 0) break
///at that point we have a sz bytes in the buff to process
consumeArray(buff, 0, sz)
}
}