60 lines
1.7 KiB
Kotlin
60 lines
1.7 KiB
Kotlin
package com.sw.platecabinet.utils
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import android.content.Context
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import android.graphics.Bitmap
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import android.os.Environment
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import java.io.File
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import java.io.FileOutputStream
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import java.io.IOException
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import kotlin.io.use
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object BitmapSaver {
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// 保存到公共目录（需WRITE_EXTERNAL_STORAGE权限）
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fun saveToPublicDirectory(
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bitmap: Bitmap,
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folderName: String = Environment.DIRECTORY_PICTURES,
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fileName: String,
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format: Bitmap.CompressFormat = Bitmap.CompressFormat.PNG,
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quality: Int = 100
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): File? {
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val dir = Environment.getExternalStoragePublicDirectory(folderName)
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if (!dir.exists()) dir.mkdirs()
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return saveBitmap(bitmap, File(dir, fileName), format, quality)
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}
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// 保存到应用私有目录（无需权限）
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fun saveToAppFilesDir(
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bitmap: Bitmap,
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context: Context,
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fileName: String,
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format: Bitmap.CompressFormat = Bitmap.CompressFormat.JPEG,
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quality: Int = 100
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): File? {
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//val dir = context.getExternalFilesDir(null)
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val dir = context.cacheDir
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val cropFile = File(dir, "crop")
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if (cropFile.exists().not()) {
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cropFile.mkdirs()
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}
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return saveBitmap(bitmap, File(cropFile, fileName), format, quality)
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}
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private fun saveBitmap(
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bitmap: Bitmap,
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outputFile: File,
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format: Bitmap.CompressFormat,
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quality: Int
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): File? {
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return try {
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FileOutputStream(outputFile).use { fos ->
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bitmap.compress(format, quality, fos)
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fos.flush()
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}
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outputFile
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} catch (e: IOException) {
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e.printStackTrace()
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null
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}
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}
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}
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