save

问题 I try to save the value of an int "redRing" from the class "Ring" displayed in a TextView of another activity using SharedPreferences, it can work but not everytime, sometimes there's a reset of the value of my int if I quit the app and come back again in my app but not everytime. I did a simple small example of code if someone can try to say me what's wrong with my code? 1) The class Ring : public class Ring { // User search rings with different colors public static int color; public static

问题 this may seem a repeated question but none of the answers or tutorials I found could help me :( . I'm beginner with the phongap. I would like to save a text file in a specific folder in the internal storage of the android device (android 4.4). I have used the exact code mentioned in the phonegap documents (the "Full Example" one) and I have given the needed permissions in the manifest. (http://docs.phonegap.com/en/2.6.0/cordova_file_file.md.html#FileWriter) after compiling it by the phonegap

问题 I need to access to programmatically turn ON & OFF Power Saving Mode in android. Is there any API for this ? As I can see Power Saving mode option is not available for all mobile devices, is there any code to check these settings availability and if available then turn it ON and OFF ? Also is there any work around ? 回答1: If you want to test the Power Saving Mode (PSM): The following works with Android Studio 3.4.1 and a Google Pixel 2 XL phone: $ adb shell dumpsys battery unplug # a charging

问题 I am working with a framegrabber and need to get the images from computer memory and save them on an image file. after trying for couple of days I end up with the following 2 functions, which creates a file and windows OS is able to run the .bmp file, but the bitmap file is black (the image size is 900KB , 640*480). does any body has any idea why, the picture is in black? here are the two functions : LPSTR CreateBMP( HWND hAppWnd, int nImageType ) { void * pWinGBits = NULL; int i; Z

问题 I'm trying to record from the microphone, add some effects, and the save this to a file I've started with the example native-audio included in the Android NDK. I'va managed to add some reverb and play it back but I haven't found any examples or help on how to accomplish this. Any and all help is welcome. 回答1: OpenSL is not a framework for file formats and access. If you want a raw PCM file, simply open it for writing and put all buffers from OpenSL callback into the file. But if you want

问题 Why can't my code save my chart as an image? Do I have a mistake somewhere? Although I followed the source (found online), I still can't solve my problem. I can show the chart but only the problem is cannot save as an image. <script type="text/javascript" src="js/jsapi.js"></script> <script type="text/javascript"> function saveAsImg(chartContainer, pngfilename) { var chartArea = chartContainer.getElementsByTagName('svg')[0].parentNode; var svg = chartArea.innerHTML; var doc = chartContainer

问题 Does someone know how to save and restore an object to a file on android ? 回答1: Open a file using openFileOutput() ( http://developer.android.com/guide/topics/data/data-storage.html#filesInternal ), than use an ObjectOutputStream ( http://download.oracle.com/javase/1.4.2/docs/api/java/io/ObjectOutputStream.html ) to write your object to a file. Use their evil twin openFileInput() and ObjectInputStream() to reverse the process. 回答2: It depends if You want to save file on internal or external

问题 I have a series of ggplot objects that I'm trying to save to an .rdata file to load into a Markdown document later. The ggplot object itself is quite small (a few KB). But, when I try to save the object as an .rdata file for later retrieval, the resulting .rdata file is now over 8 gigabytes. I've tried saving the plot directly from the GUI, saving as an .rds... Saving as a .pdf or other image results in a normal image of a few KB. I'm stumped, has anyone else encountered this problem? Sample

问题 I'm using phonegap. I have created a plugin, but now I need to save the image on the sdcard given the image url. How can I save an image? I tried using FileOutputStream to save it, and it saves it on the sdcard but my application wasn't showing the image when linking it through html tag, so I did a pull request on the file, and open it on my computer and I think the image is corrupted or something because it doesn't open correctly. Amy I using the wrong stream? Which one should I use? thanks.

问题 I don't know how to fill picturebox with small loaded image multiple times and then save it. Picturebox has a size determined by user. Then I load the image and put it to picturebox as many times as possible with current size of picturebox. Any idea how to do that? Example bellow shows how it should look like (but here there is a background and i cant save this multiple images in one picture) PS. I can't place image because i don't have enough reputation:( 回答1: You add the image as the