大佬教程收集整理的这篇文章主要介绍了E / BitmapFactory：无法解码流：java.io.FileNotFoundException（没有这样的文件或目录），大佬教程大佬觉得挺不错的，现在分享给大家，也给大家做个参考。
从画廊的乐趣中选择图像，如下所示：
private fun SELEctimageFromgallery() {
val intent = Intent()
intent.type = "image/*"
intent.action = Intent.ACTION_GET_CONTENT
startActivityForResult(
Intent.createChooser(
intent,
"Please SELEct..."
),
galLERY_requEST_CODE
)
}
onActivityResult像这样：
overrIDe fun onActivityResult(
requestCode: Int,
resultCode: Int,
data: Intent?
) {
super.onActivityResult(
requestCode,
resultCode,
data
)
if (requestCode == galLERY_requEST_CODE
&& resultCode == Activity.RESulT_OK
&& data != null
&& data.data != null
) {
// Get the Uri of data
val file_uri = data.data
img_adu.setimageURI(file_uri)
img_adu.visibility = VIEw.VISIBLE
bitmap = file_uri?.getCapturedImage(applicationContext)
val stream = ByteArrayOutputStream()
bitmap?.compress(Bitmap.CompressFormat.JPEG, 100, stream)
bitmap?.recycle()
val array = stream.toByteArray()
encoded_String = Base64.encodetoString(array, 0)
}
}
获取像这样的位图扩展名：
fun Uri.getCapturedImage(context: Context): Bitmap? {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODEs.p) {
val source =
context?.contentResolver?.let { imagedecoder.createsource(it, this) }
return source?.let { imagedecoder.decodeBitmap(it) }
} else {
return MediaStore.Images.Media.getBitmap(
context?.contentResolver,
this
)
}
}
祝好运
我想解码从画廊拍摄的照片，但是有错误。我尝试了各种方法，但没有一个成功。请帮助修复我的代码。
这是我的代码：https :
//pastebin.com/syWjqPDK
class TambahDataActivity : AppCompatActivity() {
private val GALLERY_requEST_CODE = 101
private var encoded_String: String? = null
private var image_name: String? = null
private var file: File? = null
private var file_uri: Uri? = null
private var bitmap: Bitmap? = null
private val STORAGE_PERMISSION_CODE = 1
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceStatE)
setContentView(R.layout.activity_tambah_data)
btn_tambah_foto.setOnClickListener {
if (ContextCompat.checkSelfPermission(applicationContext,Manifest.permission.READ_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED){
val intent = Intent(Intent.ACTION_PICK)
intent.type = "image/*"
intent.putExtra(MediaStore.EXTRA_OUTPUT,file_uri)
startActivityForResult(intent,GALLERY_requEST_CODE)
} else {
ActivityCompat.requestPermissions(this,arrayOf(Manifest.permission.READ_EXTERNAL_STORAGE),STORAGE_PERMISSION_CODE)
}
}
}
override fun onActivityResult(requestCode: Int,resultCode: Int,data: Intent?) {
super.onActivityResult(requestCode,resultCode,data)
if (resultCode == Activity.RESULT_OK) when (requestCodE) {
GALLERY_requEST_CODE -> {
//data.getData returns the content URI for the SELEcted Image
file_uri = data?.data!!
val fileee: String = data.data?.lastPathSegment!!
val filename: String = fileee.subString(fileee.lasTindexOf("/") + 1)
img_adu.setImageURI(file_uri)
img_adu.visibility = View.VISIBLE
file = File(
Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES)
.toString() + File.separator + filename
)
file_uri = Uri.fromFile(filE)
bitmap = BitmapFactory.decodeFile(file_uri!!.path)
val stream = ByteArrayOutputStream()
bitmap?.compress(Bitmap.CompressFormat.JPEG,100,stream)
bitmap?.recycle()
val array = stream.toByteArray()
encoded_String = Base64.encodeToString(array,0)
}
}
}
}
这是logcat的结果
2020-03-19 14:03:10.735 10607-10607/tgs.app.pengaduan E/fileUrii: /storage/emulated/0/Pictures/IMG_20200319_100639.jpg
2020-03-19 14:03:10.736 10607-10607/tgs.app.pengaduan E/BitmapFactory: Unable to decode stream: java.io.FileNotFoundException: /storage/emulated/0/Pictures/IMG_20200319_100639.jpg (No such file or directory)```
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