Add context extensions for getBoolean, getInteger, getDimension.

[CosminMihuMDC]

Add Context extensions for Resources methods:

getBoolean -> https://developer.android.com/reference/android/content/res/Resources.html#getBoolean(int)
getInteger -> https://developer.android.com/reference/android/content/res/Resources.html#getInteger(int)
getDimension -> https://developer.android.com/reference/android/content/res/Resources.html#getDimension(int)

[JakeWharton]

These are resources. Why should we put them on context?

[CosminMihuMDC]

@JakeWharton

We already have Context.getString by default in Android Framework. (see https://github.com/aosp-mirror/platform_frameworks_base/blob/master/core/java/android/content/Context.java#LC555)
So, it could be a good idea to have also other simple methods from Resources in Context to be easily accessed like getString.

Thanks.

[JakeWharton]

Then I think we should either deprecate that method or add these to Context in the framework.

[romainguy]

getString() exists on Context because it's a very common task to do, a lot more than getBoolean() for instance.

[CosminMihuMDC]

@romainguy You're right. getBoolean and getInteger are not so often used. On the other hand, getDimension could be really useful as getString is.

[JakeWharton]

But there's two useful variants of retrieving dimensions and you've (arguably) included the less-useful variant despite it's more appealing name.