android – java.io.FileNotFoundException：/storage/emulated/0/saved_images/grub.jpg：open failed：ENOENT(没有这样的文件或目录)

我使用下面的代码将图像保存在SD卡中,但我继续将此问题置于异常之下

private void SaveImage(Bitmap finalBitmap,String filename) {

    String root = Environment.getExternalStorageDirectory().toString();
    File myDir = new File(root + "/saved_images");    
    myDir.mkdirs();

    String fname = filename;
    File file = new File (myDir,fname);
    if (file.exists ()) file.delete (); 
    try {
           FileOutputStream out = new FileOutputStream(file);
           finalBitmap.compress(Bitmap.CompressFormat.JPEG,90,out);
           out.flush();
           out.close();

    } catch (Exception e) {
           e.printstacktrace();
    }
}

我错过了什么吗？

解决方法

在您不创建目录时修改代码.

private void SaveImage(Bitmap finalBitmap,String filename) {

String root = Environment.getExternalStorageDirectory().toString();
File myDir = new File(root + "/saved_images");    
myDir.mkdirs();

String fname = filename;
File file = new File (myDir,fname);
if (file.exists ()) file.delete (); 
file.createNewFile();
try {
       FileOutputStream out = new FileOutputStream(file);
       finalBitmap.compress(Bitmap.CompressFormat.JPEG,out);
       out.flush();
       out.close();

} catch (Exception e) {
       e.printstacktrace();
}

}