@Override
public void setAlpha(int alpha) {
if (mAlpha != alpha) {
mAlpha = alpha;
if (mCurrDrawable != null) {
if (mEnterAnimationEnd == 0) {
mCurrDrawable.setAlpha(alpha);
} else {
animate(false);
}
}
}
}
public boolean selectDrawable(int idx) {
if (idx == mCurIndex) {
return false;
}
final long now = SystemClock.uptimeMillis();
if (DEBUG)
android.util.Log.i(
TAG,
toString()
+ " from "
+ mCurIndex
+ " to "
+ idx
+ ": exit="
+ mDrawableContainerState.mExitFadeDuration
+ " enter="
+ mDrawableContainerState.mEnterFadeDuration);
if (mDrawableContainerState.mExitFadeDuration > 0) {
if (mLastDrawable != null) {
mLastDrawable.setVisible(false, false);
}
if (mCurrDrawable != null) {
mLastDrawable = mCurrDrawable;
mExitAnimationEnd = now + mDrawableContainerState.mExitFadeDuration;
} else {
mLastDrawable = null;
mExitAnimationEnd = 0;
}
} else if (mCurrDrawable != null) {
mCurrDrawable.setVisible(false, false);
}
if (idx >= 0 && idx < mDrawableContainerState.mNumChildren) {
Drawable d = mDrawableContainerState.mDrawables[idx];
mCurrDrawable = d;
mCurIndex = idx;
if (d != null) {
if (mDrawableContainerState.mEnterFadeDuration > 0) {
mEnterAnimationEnd = now + mDrawableContainerState.mEnterFadeDuration;
} else {
d.setAlpha(mAlpha);
}
d.setVisible(isVisible(), true);
d.setDither(mDrawableContainerState.mDither);
d.setColorFilter(mColorFilter);
d.setState(getState());
d.setLevel(getLevel());
d.setBounds(getBounds());
}
} else {
mCurrDrawable = null;
mCurIndex = -1;
}
if (mEnterAnimationEnd != 0 || mExitAnimationEnd != 0) {
if (mAnimationRunnable == null) {
mAnimationRunnable =
new Runnable() {
@Override
public void run() {
animate(true);
invalidateSelf();
}
};
} else {
unscheduleSelf(mAnimationRunnable);
}
// Compute first frame and schedule next animation.
animate(true);
}
invalidateSelf();
return true;
}