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How to save an activity state using save instance state?

I've been working on the Android SDK platform, and it is a little unclear how to save an application's state. So given this minor re-tooling of the 'Hello, Android' example: ...
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Best practices for Storyboard login screen, handling clearing of data upon logout

...roller is a Tab Bar Controller. I'm creating the login/logout process, and it's mostly working fine, but I've got a few issues. I need to know the BEST way to set all this up. ...
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git still shows files as modified after adding to .gitignore

i'm adding this to .gitignore file 5 Answers 5 ...
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How do I add a tool tip to a span element?

... Here's the simple, built-in way: <span title="My tip">text</span> That gives you plain text tooltips. If you want rich tooltips, with formatted HTML in them, you'll need to use a library to do that. Fortunately there are loads of those. ...
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How to avoid passing parameters everywhere in play2?

... data in actions, use them directly in views. Since we don't need to explicitly declare parameters in view, this is very easy. ...
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What is the difference between “pom” type dependency with scope “import” and without “import”?

Starting from Maven 2.0.9 there is possibility to include 3 Answers 3 ...
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What do people find difficult about C pointers? [closed]

From the number of questions posted here, it's clear that people have some pretty fundemental issues when getting their heads around pointers and pointer arithmetic. ...
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Vim: What's the difference between let and set?

What's the difference between let and set in the vim editor? 5 Answers 5 ...
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How can prepared statements protect from SQL injection attacks?

...in the mixing of the code and the data. In fact, our SQL query is a legitimate program. And we are creating such a program dynamically, adding some data on the fly. Thus, the data may interfere with the program code and even alter it, as every SQL injection example shows it (all examples in PHP...
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What specifically are wall-clock-time, user-cpu-time, and system-cpu-time in UNIX?

...ime spent in user code and the amount of time spent in kernel code. The units are seconds (and subseconds, which might be microseconds or nanoseconds). The wall-clock time is not the number of seconds that the process has spent on the CPU; it is the elapsed time, including time spent waiting for i...