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What's the best way to share data between activities?
I have one activity which is the main activity used throughout the app and it has a number of variables. I have two other activities which I would like to be able to use the data from the first activity.
Now I know I can do something like this:
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Don't reload application when orientation changes
I simply need nothing to change when the screen is rotated. My app displays a random image when it first loads and rotating the device should not select another random image.
How can I (simply) make this behavior stop?
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【解决】运行故障：The arguments,["xxx"], [false], [0] are th...
一般出现这个错误，大概率是因为参数个数、参数类型与调用方法不符导致的。检查一下参数，是否有空的地方没填上！
How to monitor network calls made from iOS Simulator
I am trying to monitor calls from an app to my server just like Firebug does.
I could not find a way to see that in iOS Simulator or in xCode.
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App Inventor 2 低功耗蓝牙(BLE) 硬件接入、数据通信及IO控制 - App Invent...
...介绍一款较为通用、价格低廉的BLE设备从零开始如何利用App Inventor 2开发一款自己专属的手机蓝牙App应用。BLE与经典蓝牙的区别可参考：《低功耗蓝牙(BLE) 和 经典蓝牙(SPP) 的区别》。本文主要通过一款常见的BLE硬件接入控制，介...
How does push notification technology work on Android?
...ud Google server. The TCP connection had been initiated by the Google Play application. That's why Google Play must be installed on the device for making Google Cloud Messaging (GCM) (formerly Android Cloud to Device Messaging Service - C2DM) work.
When this TCP client socket receives some message,...
windows service vs scheduled task
...arate out your processing code into a different component from the console app or Windows Service. Then you have the choice, either to call the worker process from a console application and hook it into Windows Scheduler, or use a Windows Service.
You'll find that scheduling a Windows Service isn't...
Android: Storing username and password?
If I want to store the username and password to be used inside an Android application, what is the best way to do it? Is it through the preferences screen (but what if the user misses this?), or pop up a dialog box and ask the user for the credentials? If so, I do have to maintain state for the appl...
What's the meaning of exception code “EXC_I386_GPFLT”?
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To debug and find the source:
Enable Zombies for the app (Product\Scheme) and Launch Instruments, Select Zombies.
Run your app in Xcode
Then go to Instruments start recording.
Go back to your App and try generating the error.
Instruments should detect bad call (to zombie) if ...
Can I make a function available in every controller in angular?
...nction foo that I want to be able to call from anywhere inside of my ng-app declaration. Is there someway I can make it globally accessible in my module setup or do I need to add it to the scope in every controller?
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