SwipeRefreshLayout

Modified android.support.v4.widget.SwipeRefreshLayout to make the animations more like Google Now.

Changes:

• Added a mResistance float variable to prevent the target layout from moving so quickly.
• Modified the REFRESH_TRIGGER_DISTANCE from 120 to 190. (You can change that according to the resistance to fit the requirement, currently if you use a smaller number as mResistance, the distance trigger will also be smaller)

Additional feature:

• Splite setColorScheme(int colorRes1, int colorRes2, int colorRes3, int colorRes4) into two methods: setColorSchemeRes(int colorRes1, int colorRes2, int colorRes3, int colorRes4), which can be used to pass color resource id to the progress bar; and setColorSchemeColor(int color1, int color2, int color3, int color4), which can be used to pass the integer representation of colors to the progress bar.
• Added a function setResistance(float resistance) to change mResistance programmatically.

TODO:

• Assiciate the trigger distance and resistance to make it more universal.