1c1fb9a9c2730178105977fca629e80951bfc3cdcAndy Huangpackage com.android.mail.utils; 2c1fb9a9c2730178105977fca629e80951bfc3cdcAndy Huang 3c1fb9a9c2730178105977fca629e80951bfc3cdcAndy Huangimport android.animation.Animator; 4c1fb9a9c2730178105977fca629e80951bfc3cdcAndy Huangimport android.animation.AnimatorListenerAdapter; 5c1fb9a9c2730178105977fca629e80951bfc3cdcAndy Huangimport android.view.View; 6c1fb9a9c2730178105977fca629e80951bfc3cdcAndy Huangimport android.view.ViewPropertyAnimator; 7c1fb9a9c2730178105977fca629e80951bfc3cdcAndy Huang 8c1fb9a9c2730178105977fca629e80951bfc3cdcAndy Huang/** 9c1fb9a9c2730178105977fca629e80951bfc3cdcAndy Huang * A backwards-compatible substitute for {@link ViewPropertyAnimator#withLayer()}. 10c1fb9a9c2730178105977fca629e80951bfc3cdcAndy Huang * 11c1fb9a9c2730178105977fca629e80951bfc3cdcAndy Huang */ 12c1fb9a9c2730178105977fca629e80951bfc3cdcAndy Huangpublic class HardwareLayerEnabler extends AnimatorListenerAdapter { 13c1fb9a9c2730178105977fca629e80951bfc3cdcAndy Huang 14c1fb9a9c2730178105977fca629e80951bfc3cdcAndy Huang private final View mTarget; 15c1fb9a9c2730178105977fca629e80951bfc3cdcAndy Huang 16c1fb9a9c2730178105977fca629e80951bfc3cdcAndy Huang public HardwareLayerEnabler(View target) { 17c1fb9a9c2730178105977fca629e80951bfc3cdcAndy Huang mTarget = target; 18c1fb9a9c2730178105977fca629e80951bfc3cdcAndy Huang } 19c1fb9a9c2730178105977fca629e80951bfc3cdcAndy Huang 20c1fb9a9c2730178105977fca629e80951bfc3cdcAndy Huang @Override 21c1fb9a9c2730178105977fca629e80951bfc3cdcAndy Huang public void onAnimationStart(Animator animation) { 22c1fb9a9c2730178105977fca629e80951bfc3cdcAndy Huang mTarget.setLayerType(View.LAYER_TYPE_HARDWARE, null); 23c1fb9a9c2730178105977fca629e80951bfc3cdcAndy Huang } 24c1fb9a9c2730178105977fca629e80951bfc3cdcAndy Huang 25c1fb9a9c2730178105977fca629e80951bfc3cdcAndy Huang @Override 26c1fb9a9c2730178105977fca629e80951bfc3cdcAndy Huang public void onAnimationEnd(Animator animation) { 27c1fb9a9c2730178105977fca629e80951bfc3cdcAndy Huang mTarget.setLayerType(View.LAYER_TYPE_NONE, null); 28c1fb9a9c2730178105977fca629e80951bfc3cdcAndy Huang } 29c1fb9a9c2730178105977fca629e80951bfc3cdcAndy Huang 30c1fb9a9c2730178105977fca629e80951bfc3cdcAndy Huang} 31