fix an API15 issue where inflating crossview inside an action bar men…

…u item would fail with a null pointer exception on the local variable mPaint

crossview/src/main/java/cdflynn/android/library/crossview/CrossView.java

@@ -56,7 +56,7 @@ public class CrossView extends View {
  private float mArcLengthLeft;
  private float mArcLengthRight;
 
- private Paint mPaint = new Paint();
+ private Paint mPaint;
  private int mColor = DEFAULT_COLOR;
  private RectF mRect;
  private PathMeasure mPathMeasure;
@@ -169,11 +169,13 @@ public void setPaddingRelative(int start, int top, int end, int bottom) {
 
  public void setColor(int argb) {
  mColor = argb;
+ if (mPaint == null) {
+ mPaint = new Paint();
+ }
  mPaint.setColor(argb);
  invalidate();
  }
 
-
  /**
  * Tell this view to switch states from cross to plus, or back, using the default animation duration.
  * @return an integer flag that represents the new state after toggling.
@@ -253,6 +255,7 @@ private void setPercent(float percent) {
  * or an operating system callback like {@link #onLayout(boolean, int, int, int, int)}.
  */
  private void init() {
+ mPaint = new Paint();
  mRect = new RectF();
  mRect.left = getPaddingLeft();
  mRect.right = getWidth() - getPaddingRight();