storage

问题 How do i know if there are internal and external storage in android pragmatically? does anyone how to know how to check both internal and external storage thanks in advance 回答1: it's already explained in android documentation. Code taken from documentation boolean mExternalStorageAvailable = false; boolean mExternalStorageWriteable = false; String state = Environment.getExternalStorageState(); if (Environment.MEDIA_MOUNTED.equals(state)) { // We can read and write the media

问题 I read some post in this regard but I still don\'t understand what\'s the best solution in my case. I\'m start writing a new webApp and the backend is going to provide about 1-10 million images . (average size 200-500kB for a single image) My site will provide content and images to 100-1000 users at the same time. I\'d like also to keep Provider costs as low as possible (but this is a secondary requirement). I\'m thinking that File System space is less expensive if compared to the cost of DB

问题 With jQuery you can bind functions to an event triggered on a DOM object using .bind() or one of the event handler helper functions. jQuery have to store this internally somehow and I wonder if is it possible given a DOM object, to find out which events have been bound to the object, and access those functions etc. The desired return result could look something like this: { click: [function1, function2], change: [function3], blur: [function4, function5, function6] } 回答1: Edit : the method

问题 I have an app that I want to be able to capture a screenshot. The background of the layout is a surfaceView that shows video from the rear camera. The following code is able to take a screenshot but the contents of the surfaceView is saved as black. Here is the code : btn.setOnClickListener(new OnClickListener() { public void onClick(View v) { Random num = new Random(); int nu=num.nextInt(1000); Bitmap bmp; CamView.setDrawingCacheEnabled(true); CamView.buildDrawingCache(true); Bitmap bmp2 =

问题 As per the title of this question, what are the practical differences between AWS EFS, EBS and S3? My understanding of each: S3 is a storage facility accessible any where EBS is a device you can mount onto EC2 EFS is a file system you can mount onto EC2 So why would I use EBS over EFS? Seem like they have the same use cases but minor semantic differences? Although EFS is replicated across AZs where as EBS is just a mounted device. I guess my understanding of EBS is lacking hence I\'m unable

问题 I am creating an app using the Bespin editor and HTML5\'s localStorage. It stores all files locally and helps with grammar, uses JSLint and some other parsers for CSS and HTML to aid the user. I want to calculate how much of the localStorage limit has been used and how much there actually is. Is this possible today? I was thinking for not to simply calculate the bits that are stored. But then again I\'m not sure what more is there that I can\'t measure myself. 回答1: You may be able to get an

问题 I want to save a file on internal storage into a specific folder. My code is: File mediaDir = new File(\"media\"); if (!mediaDir.exists()){ mediaDir.createNewFile(); mediaDir.mkdir(); } File f = new File(getLocalPath()); f.createNewFile(); FileOutputStream fos = new FileOutputStream(f); fos.write(data); fos.close(); getLocalPath returns /data/data/myPackage/files/media/qmhUZU.jpg but when I want to create the media folder I\'m getting the exception \"java.io.IOException: Read-only file system

问题 As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance. Closed 6 years ago . I am developing a mobile web application (for iPhone & Android) with a local database (using html5 webstorage) so my app is still

问题 I’m writing an upload function in .NET for presentation images on user profiles. I’m choosing between two different ways of doing it, and would like to ask on advice and opinions as to the pros and cons. Store the images directly on the file system Store the images in the database So far I’ve been mostly pro the first option – naming the images after the usernames, as each user can only have one presentation image. Then I do a check in the designated path if the user has an image, if not

问题 I want to use .data() in my application. The examples are helpful, but I do not understand however where the values are stored. I inspect the webpage with Firebug and as soon as .data() saves an object to a dom element, I do not see any change in Firebug (either HTML or Dom tabs). I tried to look at jQuery source, but it is very advanced for my Javascript knowledge and I lost myself. So the question is: Where do the values stored by jQuery.data() actually go? Can I inspect/locate/list/debug