在我的应用程序中，我正在执行两个for循环，但是这些for循环需要按顺序安排，这里是用例：
有两个for循环：1- ImageStickerslist 2-TextStickerslist
我想做的是在imagestickerslist之后，如果正确定义，则将执行textstickerslist。
这里的imagesticker列表由URL路径组成，用于从滑行加载图像，但是，如果这些图像具有高分辨率，即使尚未从URL加载图像，它也会最终使线程继续。为了解决这个问题，尝试添加阻塞调用以在ready和full方法上滑动，但这不会带来任何帮助。我非常困惑阻塞呼叫如何工作，对此将有所帮助。
这是执行循环的我的代码：
runBlocking {
launch {
imagestickers.forEach {
runBlocking {
var image = it.path
var x = it.x
var y = it.y
image!!.log()
setimagestickers(image!!, x!!, y!!, it.width!!, it.height!!)
}
}
}.join()
textstickers.forEach {
runBlocking {
var text = it.text.toString()
var color = it.color
var font = it.font
var size = it.size
var x = it.x
var y = it.y
setTextSticker(text, Color.parseColor(color), size!!, x!!, y!!)
}
}
}
这是我进行主要计算的两种方法：
fun setimagestickers(path:String,x:Int,y:Int,w:Int,h:Int){
Glide.with(this@NewStickerActivity).asBitmap().timeout(6000000).load(path).into(object : CustomTarget<Bitmap>() {
override fun onLoadCleared(placeholder: Drawable?) {
}
override fun onResourceReady(resource: Bitmap, transition: Transition<in Bitmap>?) {
var size: ViewGroup.LayoutParams
var bmp1 = resource
size = UiHelper.getHeightWidth(this@NewStickerActivity, (w).toInt(), (h).toInt())
var resizedBitmap = Bitmap.createScaledBitmap(bmp1, size.width, size.height, false)
var drawable = BitmapDrawable(resources, resizedBitmap)
var dsImageSticker = DrawableSticker(drawable)
dsImageSticker.setTag("ImageSticker")
var pm: List<Int>
if (density > 3.0) {
pm = UiHelper.getmargins(this@NewStickerActivity, (x).toInt(), (y).toInt())
} else {
pm = UiHelper.getmargins(this@NewStickerActivity, (x).toInt(), (y).toInt())
}
Log.i("Hmmm:", pm.get(0).toFloat().toString() + "::" + pm.get(1).toFloat().toString())
stickerView.addStickerAndSetMatrix1(
dsImageSticker,
pm.get(0).toFloat(),
pm.get(1).toFloat()
)
}
})
}
fun setTextSticker(text: String, color: Int,size: Int, x: Int, y: Int){
val bmp1: Bitmap
val drawable: Drawable
var l: List<Int>
if (density > 3.0) {
l = UiHelper.getmargins(this@NewStickerActivity, (x).toInt(), (y * 1.07).toInt())
} else {
l = UiHelper.getmargins(this@NewStickerActivity, x.toInt(), y.toInt())
}
//var tf = Typeface.createFromFile(assets,"fonts/"+path)
var tf = Typeface.createFromAsset(assets, "fonts/Myriad Pro Bold SemiExtended.ttf")
bmp1 = createBitmapFromLayoutWithText(this@NewStickerActivity, size, text, color, 0f, tf, 0f, 0f, color, Gravity.LEFT)
drawable = BitmapDrawable(resources, bmp1)
var dsTextSticker = DrawableSticker(drawable)
dsTextSticker.setTag("textSticker")
Log.i("Hmmm:", l.get(0).toFloat().toString() + "::" + l.get(1).toFloat().toString())
/*if (rotate) {
stic.addStickerAndSetrotate(
dsTextSticker, rotationdegress,
l.get(0).toFloat(),
l.get(1).toFloat()
)
} else {*/
stickerView.addStickerAndSetMatrix1(
dsTextSticker,
l.get(0).toFloat(),
l.get(1).toFloat())
}
更新：
通过按顺序递增和获取图像，我无需协程就可以工作：首先，我获取一个Int，然后不断递增，直到达到列表大小，这是我的代码：首先，我这样做了：
var i = 0
setimagestickers(imagestickers.get(i).path!!, imagestickers.get(i).x!!, imagestickers.get(i).y!!, imagestickers.get(i).width!!, imagestickers.get(i).height!!)
之后，在资源上做好准备就可以了！
Glide.with(this@NewStickerActivity).asBitmap().timeout(6000000).load(path).into(object : CustomTarget<Bitmap>() {
override fun onLoadCleared(placeholder: Drawable?) {
}
override fun onResourceReady(resource: Bitmap, transition: Transition<in Bitmap>?) {
var size: ViewGroup.LayoutParams
var bmp1 = resource
size = UiHelper.getHeightWidth(this@NewStickerActivity, (w).toInt(), (h).toInt())
var resizedBitmap = Bitmap.createScaledBitmap(bmp1, size.width, size.height, false)
var drawable = BitmapDrawable(resources, resizedBitmap)
var dsImageSticker = DrawableSticker(drawable)
dsImageSticker.setTag("ImageSticker")
var pm: List<Int>
if (density > 3.0) {
pm = UiHelper.getmargins(this@NewStickerActivity, (x).toInt(), (y).toInt())
} else {
pm = UiHelper.getmargins(this@NewStickerActivity, (x).toInt(), (y).toInt())
}
Log.i("Hmmm:", pm.get(0).toFloat().toString() + "::" + pm.get(1).toFloat().toString())
stickerView.addStickerAndSetMatrix1(
dsImageSticker,
pm.get(0).toFloat(),
pm.get(1).toFloat()
)
i++
if(i < imagestickers.size){
setimagestickers(imagestickers.get(i).path!!, imagestickers.get(i).x!!, imagestickers.get(i).y!!, imagestickers.get(i).width!!, imagestickers.get(i).height!!)
}
else{
if(textstickers.isNullOrEmpty()){
loader!!.hide()
}
else {
setTextSticker(textstickers.get(j).text!!, Color.parseColor(textstickers.get(j).color), textstickers.get(j).size!!, textstickers.get(j).x!!, textstickers.get(j).y!!)
}
}
}
})
但是我仍然想知道如何用协程而不是这种方法来解决它！
基本上，您要进行异步Glide调用，而不会暂停协程直到完成。您必须更改的第一件事是引入suspend fun getImageSticker()：
suspend fun getSticker(path: String): Bitmap =
suspendCancellableCoroutine { continuation -> Glide
.with(this@NewStickerActivity)
.asBitmap()
.timeout(6000000)
.load(path)
.into(object : CustomTarget<Bitmap>() {
override fun onResourceReady(resource: Bitmap, x: Transition<in Bitmap>?) {
continuation.resume(resource)
}
})
}
请注意，这将返回Bitmap。现在，您可以像调用常规阻塞函数一样调用它，并从调用方使用它的结果：
suspend fun setimagestickers(path: String, x: Int, y: Int, w: Int, h: Int) {
val resource = getSticker(path)
var size: ViewGroup.LayoutParams
var bmp1 = resource
size = UiHelper.getHeightWidth(this@NewStickerActivity, (w).toInt(), (h).toInt())
var resizedBitmap = Bitmap.createScaledBitmap(bmp1, size.width, size.height, false)
}
现在，如果要并行化setimagestickers调用，请循环启动它们：
launch {
imagestickers.map {
launch {
var image = it.path
var x = it.x
var y = it.y
image!!.log()
setimagestickers(image!!, x!!, y!!, it.width!!, it.height!!)
}
}.joinAll()
textstickers.forEach {
...
}
}
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