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How to use SharedPreferences in Android to store, fetch and edit values [closed]
...:
SharedPreferences prefs = this.getSharedPreferences(
"com.example.app", Context.MODE_PRIVATE);
To read preferences:
String dateTimeKey = "com.example.app.datetime";
// use a default value using new Date()
long l = prefs.getLong(dateTimeKey, new Date().getTime());
To edit and save pre...
XMLHttpRequest cannot load file. Cross origin requests are only supported for HTTP
...f the Python server starts successfully, you will see a msg.
Run You Web Application Locally
Open a browser
In the address line type: http://your IP address:port
http://xxx.xxx.x.x:1337 or http://xx.xxx.xxx.xx:8000 for the default
If the server is working, you will see a list of your files in t...
When to use Storyboard and when to use XIBs
...o projects using Storyboards. My learnings are:
Storyboards are nice for apps with a small to medium number of screens and relatively straightforward navigation between views.
If you have lots of views and lots of cross-navigation between them the Storyboard view gets confusing and too much work t...
Linux环境离线安装docker&docker-compose - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...ce
# 在文件中添加一下内容：
[Unit]
Description=Docker Application Container Engine
Documentation=https://docs.docker.com
After=network-online.target firewalld.service
Wants=network-online.target
[Service]
Type=notify
ExecStart=/usr/bin/dockerd
ExecReload=/bin/k...
When to use PNG or JPG in iPhone development?
I have an app that will display a bunch of images in a slideshow. Those images will be part of the bundle, thus distributed with the app.
...
How do I install package.json dependencies in the current directory using npm
I have a web app: fooapp . I have a package.json in the root. I want to install all the dependencies in a specific node_modules directory . How do I do this?
...
What are the pros and cons of performing calculations in sql vs. in your application
...cially:
complexity of calculations (prefer doing complex crunching on an app-server, since that scales out; rather than a db server, which scales up)
volume of data (if you need to access/aggregate a lot of data, doing it at the db server will save bandwidth, and disk io if the aggregates can be d...
if a ngSrc path resolves to a 404, is there a way to fallback to a default?
The application I'm building requires my user to set 4 pieces of information before this image even has a chance of loading. This image is the center-piece of the application, so the broken image link makes it look like the whole thing is borked. I'd like to have another image take its place on a 4...
Error: Can't set headers after they are sent to the client
... look for callbacks that are accidentally called twice, or any error that happens after the body is sent.
In your case, you called res.redirect(), which caused the response to become Finished. Then your code threw an error (res.req is null). and since the error happened within your actual function(r...
Programmatically relaunch/recreate an activity?
...
This is ok if your app is only targeting SDK level 11 and above. Otherwise I'd go with Steve Haley's approach.
– TalkLittle
Dec 15 '11 at 22:53
...