Question

您好我正在尝试在将过滤器应用到SD卡或图库后保存新的位图图像。我正在使用此代码保存我在堆栈溢出时找到的位图，但此代码对我不起作用

public void saveImage(View view) {

    /*MediaStore.Images.Media.insertImage(getContentResolver(),newBitmap,"Image-Name","description");*/
    String root = Environment.getExternalStorageDirectory().toString();
    File myDir = new File(root + "/saved_images");
    myDir.mkdirs();
    Random generator = new Random();
    int n = 10000;
    n = generator.nextInt(n);
    String fname = "Image-"+ n +".jpg";
    File file = new File (myDir, fname);
    if (file.exists ()) file.delete ();
    try {
        FileOutputStream out = new FileOutputStream(file);
        newBitmap.compress(Bitmap.CompressFormat.JPEG, 90, out);
        out.flush();
        out.close();

    } catch (Exception e) {
        e.printStackTrace();
    }
    Toast.makeText(this,"Image Saved In SD Card",Toast.LENGTH_LONG).show();
}

请告诉我如果我做错了什么？提前谢谢。

Answer 1

确保您已添加写入sdcard的权限

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

无法保存位图图片

1 个答案: