在Android的位图保存为JPEG外置存储的文件夹中 [英] Save Bitmap in Android as JPEG in External Storage in a folder

问题描述

我用这code保存位图的外部存储，但它不会创建该文件夹，如果它不存在：

I am using this code to save Bitmap in External Storage but it does not create the folder if it not exists:

String path = Environment.getExternalStorageDirectory().toString();
        OutputStream fOutputStream = null;
        File file = new File(path + "/Captures/", "screen.jpg");
        try {
            fOutputStream = new FileOutputStream(file);

            capturedBitmap.compress(Bitmap.CompressFormat.JPEG, 100, fOutputStream);

            fOutputStream.flush();
            fOutputStream.close();

            MediaStore.Images.Media.insertImage(getContentResolver(), file.getAbsolutePath(), file.getName(), file.getName());
        } catch (FileNotFoundException e) {
            e.printStackTrace();
            Toast.makeText(this, "Save Failed", Toast.LENGTH_SHORT).show();
            return;
        } catch (IOException e) {
            e.printStackTrace();
            Toast.makeText(this, "Save Failed", Toast.LENGTH_SHORT).show();
            return;
        }

我如何保存图片在新的目录，如果不存在，并保存默认如果文件夹是那里的设备？

How can I save the image in the new directory if not exists and save default if the folder is there in the device?

推荐答案

试试这个它会插上U造成肯定的：

try this it will gives u result sure:

String root = Environment.getExternalStorageDirectory().toString();
File myDir = new File(root + "/req_images");
myDir.mkdirs();
Random generator = new Random();
int n = 10000;
n = generator.nextInt(n);
String fname = "Image-" + n + ".jpg";
file = new File(myDir, fname);
Log.i(TAG, "" + file);
if (file.exists())
file.delete();
try {
FileOutputStream out = new FileOutputStream(file);
bm.compress(Bitmap.CompressFormat.JPEG, 90, out);
out.flush();
out.close();
} catch (Exception e) {
e.printStackTrace();
}

添加这一项的画廊显示：

add this one to show in gallery:

sendBroadcast(new Intent(
Intent.ACTION_MEDIA_MOUNTED,
        Uri.parse("file://" + Environment.getExternalStorageDirectory())));

看一下这个链接，明确的答案： 在画廊 显示文件夹的图像

look at this link for clear answer: show folder images in gallery

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