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优化

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This commit is contained in:
kunfei
2022-04-14 14:23:08 +08:00
parent 1312bb038c
commit 374de8f7a5
1 changed files with 25 additions and 34 deletions
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59
app/src/main/java/io/legado/app/utils/BitmapUtils.kt
View File

@@ -3,9 +3,11 @@
package io.legado.app.utils
import android.content.Context
import android.graphics.*
import android.graphics.Bitmap
import android.graphics.Bitmap.Config
import android.view.View
import android.graphics.BitmapFactory
import android.graphics.Color
import android.graphics.Matrix
import com.google.android.renderscript.Toolkit
import java.io.IOException
import kotlin.math.*
@@ -83,9 +85,7 @@ object BitmapUtils {
fun decodeBitmap(context: Context, resId: Int): Bitmap? {
val opt = BitmapFactory.Options()
opt.inPreferredConfig = Config.RGB_565
//获取资源图片
val `is` = context.resources.openRawResource(resId)
return BitmapFactory.decodeStream(`is`, null, opt)
return BitmapFactory.decodeResource(context.resources, resId, opt)
}
/**
@@ -96,13 +96,10 @@ object BitmapUtils {
* @return
*/
fun decodeBitmap(context: Context, resId: Int, width: Int, height: Int): Bitmap? {
var inputStream = context.resources.openRawResource(resId)
val op = BitmapFactory.Options()
// inJustDecodeBounds如果设置为true,仅仅返回图片实际的宽和高,宽和高是赋值给opts.outWidth,opts.outHeight;
op.inJustDecodeBounds = true
BitmapFactory.decodeStream(inputStream, null, op) //获取尺寸信息
BitmapFactory.decodeResource(context.resources, resId, op) //获取尺寸信息
//获取比例大小
val wRatio = ceil((op.outWidth / width).toDouble()).toInt()
val hRatio = ceil((op.outHeight / height).toDouble()).toInt()
@@ -114,9 +111,8 @@ object BitmapUtils {
op.inSampleSize = hRatio
}
}
inputStream = context.resources.openRawResource(resId)
op.inJustDecodeBounds = false
return BitmapFactory.decodeStream(inputStream, null, op)
return BitmapFactory.decodeResource(context.resources, resId, op)
}
/**
@@ -135,31 +131,26 @@ object BitmapUtils {
height: Int
): Bitmap? {
var inputStream = context.assets.open(fileNameInAssets)
val op = BitmapFactory.Options()
// inJustDecodeBounds如果设置为true,仅仅返回图片实际的宽和高,宽和高是赋值给opts.outWidth,opts.outHeight;
op.inJustDecodeBounds = true
BitmapFactory.decodeStream(inputStream, null, op) //获取尺寸信息
//获取比例大小
val wRatio = ceil((op.outWidth / width).toDouble()).toInt()
val hRatio = ceil((op.outHeight / height).toDouble()).toInt()
//如果超出指定大小，则缩小相应的比例
if (wRatio > 1 && hRatio > 1) {
if (wRatio > hRatio) {
op.inSampleSize = wRatio
} else {
op.inSampleSize = hRatio
return inputStream.use {
val op = BitmapFactory.Options()
// inJustDecodeBounds如果设置为true,仅仅返回图片实际的宽和高,宽和高是赋值给opts.outWidth,opts.outHeight;
op.inJustDecodeBounds = true
BitmapFactory.decodeStream(inputStream, null, op) //获取尺寸信息
//获取比例大小
val wRatio = ceil((op.outWidth / width).toDouble()).toInt()
val hRatio = ceil((op.outHeight / height).toDouble()).toInt()
//如果超出指定大小，则缩小相应的比例
if (wRatio > 1 && hRatio > 1) {
if (wRatio > hRatio) {
op.inSampleSize = wRatio
} else {
op.inSampleSize = hRatio
}
}
inputStream = context.assets.open(fileNameInAssets)
op.inJustDecodeBounds = false
BitmapFactory.decodeStream(inputStream, null, op)
}
inputStream = context.assets.open(fileNameInAssets)
op.inJustDecodeBounds = false
return BitmapFactory.decodeStream(inputStream, null, op)
}
//图片不被压缩
fun convertViewToBitmap(view: View, bitmapWidth: Int, bitmapHeight: Int): Bitmap {
val bitmap = Bitmap.createBitmap(bitmapWidth, bitmapHeight, Config.ARGB_8888)
view.draw(Canvas(bitmap))
return bitmap
}
/**