save

问题 I am currently saving a UIImage to the camera roll this way. UIImageWriteToSavedPhotosAlbum(finalPicture.image, nil, nil, nil); But what happens if the user denies us permission to access their photos... how can I tell that this has happened and display an error message? 回答1: To save the image to the camera roll I'm Using ALAssetsLibrary so in the method: //Called after taking the photo with the camera or selected the image from the gallery - (void)imagePickerController:

问题 Somehow I just pressed some key or key combination in eclipse (android development) and eclipse suddenly restored the previous version of the file I was working on. CTRL Z/Y does not help. Do I have to do all my changes to the file again!?? And WHAT could I have just done? I don't want that to happen anymore. How could I possible continue working with eclipse knowing this could happen again sometime. Thanks, 回答1: I think I had the same problem and figured it out after a few minutes. Eclipse

问题 I am using $resource to retrieve data from the server using query. The server returns an array of objects, which I store in stuklijst . I can send the (updated) contents of stuklijst back to the server by looping through the array and using $save to send each item of the array back to the server. I now want to send all items (the entire stuklijst ) to the server in one go, without using the loop. When trying a $save on stuklijst , Angular throws a "destination.push is not a function" error.

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 5 years ago . I want to create a Google Closure Compiler plugin for Eclipse. I already have a popup menu entry to compile a JavaScript file to its minified version. But it would be more than helpful if every time you save a *.js that minified version would be generated automatically. I read/heard about natures and builders,

问题 I know, there are plenty of questions in regards to saving/retrieving data on here. I was doing find looking things up on my own and really thought I could manage to find my answers without having to "ask a question", but I began to wonder something that I haven't seen an answer for on here. MY SITUATION: Naturally, I'm making an app. Upon closing the app, I want to save a simple array of numbers (0 or 1) or boolean values as it were. Upon starting the app, I want to search for that array, if

问题 I have an app where the user saves a bunch of bitmaps in a folder on the SD card. I would like to add a feature where the user can export said bitmaps as a .gif file that is viewable say, in a text message. How can I accomplish this? 回答1: There's a native library that does exactly this. http://jiggawatt.org/badc0de/android/index.html#gifflen 来源： https://stackoverflow.com/questions/4569133/android-make-gif-out-of-bitmaps

问题 I'm trying to recreate the three tier core data system that is described in this cocoanetics article ( http://www.cocoanetics.com/2012/07/multi-context-coredata/). The problem I'm running into is creating the private MOC on its own background thread. I don't have much experience with multithreading and how it should be done in objective c. I've been reading over articles and trying to grasp how to correctly implement this approach, but I have finally conceded to the fact that I don't know

问题 I want to save some integers after application shut down and restore them after application opening, what is the easiest way to do this? 回答1: You should store and load data from NSUserDefaults: http://developer.apple.com/library/IOS/#documentation/Cocoa/Reference/Foundation/Classes/NSUserDefaults_Class/Reference/Reference.html NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults]; // to store [defaults setObject:[NSNumber numberWithInt:12345] forKey:@"myKey"]; [defaults synchronize

问题 Say I have a model called Transaction which has a :transaction_code attribute. I want that attribute to be automatically filled with a sequence number which may differ from id (e.g. Transaction with id=1 could have transaction_code=1000 ). I have tried to create a sequence on postgres and then making the default value for the transaction_code column the nextval of that sequence. The thing is, if I do not assign any value to @transaction.transaction_code on RoR, when I issue a @transaction

问题 I am working on a program in Python and want users to be able to save data they are working on. I have looked into cPickle; it seems like it would be a fast and easy way to save data, it seems insecure. Since entire functions, classes, etc can be pickled, I am worried that a rogue save file could inject harmful code into the program. Is there a way I can prevent that, or should I look into other methods of saving data, such as directly converting to a string (which also seems insecure,) or