我不明白为什么人们说这是保存在外部存储器,因为当我使用这个代码,我签入我的SD卡没有文件
代码这个
OutputStream imageFileOS;
int imageNum = 0;
Intent imageIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
File imagesFolder = new File(Environment.getExternalStoragePublicDirectory( Environment.DIRECTORY_PICTURES), "Punch");
if(!imagesFolder.exists()){
imagesFolder.mkdirs(); // <----
}
String fileName = "image_" + String.valueOf(imageNum) + ".jpg";
File output = new File(imagesFolder, fileName);
while (output.exists()){
imageNum++;
fileName = "image_" + String.valueOf(imageNum) + ".jpg";
output = new File(imagesFolder, fileName);
}
Uri uriSavedImage = Uri.fromFile(output);
imageIntent.putExtra(MediaStore.EXTRA_OUTPUT, uriSavedImage);
当我运行代码并检查时,它有“内存/图片/打孔/图像_0.jpg”中的文件
但在SD卡中看不到(SD卡=外部存储卡16 GB)
请帮我 ..
最佳答案 我认为你对getExternalStorageDirectory的作用感到困惑.
它获取由设备制造商指定的主存储目录.这通常是“sdcard”.注释中指定的“External_sd”实际上是辅助存储目录,不会在给定方法中返回.
这仍然不是受保护的内部存储,并且可以在连接时由Pcs安装和访问.
来自android文档:
Note: don’t be confused by the word “external” here. This directory
can better be thought as media/shared storage. It is a filesystem that
can hold a relatively large amount of data and that is shared across
all applications (does not enforce permissions). Traditionally this is
an SD card, but it may also be implemented as built-in storage in a
device that is distinct from the protected internal storage and can be
mounted as a filesystem on a computer.