// TextView visibility toggle
public void toggleDebugWindow(View view) {
float alpha = textView.getAlpha();
if (alpha == 0f) {
textView.animate().alpha(1f).setDuration(animationDuration);
} else {
textView.animate().alpha(0f).setDuration(animationDuration);
}
}
/** 设置动画渐入渐出的效果 */
private void setUpMonthOverlay() {
// 设置月份为不显示
mTxtMonth.setVisibility(View.GONE);
// 判断是否为拖拽状态,若为拖拽则为透明状态
if (isDragging()) {
// 动画集合(透明)
AnimatorSet animatorSetFadeIn = new AnimatorSet();
animatorSetFadeIn.setDuration(FADE_DURATION);
// ObjectAnimator在动画的过程中自动更新属性值，这是通过调用该属性的set方法来实现
// ofFloat,因为参数是float型的
// 参数:View目标对象,对象标识名,动画参数起始值,动画参数结束值
ObjectAnimator animatorTxtAlphaIn =
ObjectAnimator.ofFloat(mTxtMonth, "alpha", mTxtMonth.getAlpha(), 1f);
ObjectAnimator animatorBackgroundAlphaIn =
ObjectAnimator.ofFloat(mMonthBackground, "alpha", mMonthBackground.getAlpha(), 1f);
// 一起执行动画
animatorSetFadeIn.playTogether(animatorTxtAlphaIn, animatorBackgroundAlphaIn);
animatorSetFadeIn.addListener(
new Animator.AnimatorListener() {
@Override
public void onAnimationStart(Animator animation) {}
@Override
public void onAnimationEnd(Animator animation) {
setAlphaSet(true);
}
@Override
public void onAnimationCancel(Animator animation) {}
@Override
public void onAnimationRepeat(Animator animation) {}
});
animatorSetFadeIn.start();
} else { // 若不是拖拽则为显示状态
// 动画集合(显示)
AnimatorSet animatorSetFadeOut = new AnimatorSet();
animatorSetFadeOut.setDuration(FADE_DURATION);
ObjectAnimator animatorTxtAlphaOut =
ObjectAnimator.ofFloat(mTxtMonth, "alpha", mTxtMonth.getAlpha(), 0f);
ObjectAnimator animatorBackgroundAlphaOut =
ObjectAnimator.ofFloat(mMonthBackground, "alpha", mMonthBackground.getAlpha(), 0f);
animatorSetFadeOut.playTogether(animatorTxtAlphaOut, animatorBackgroundAlphaOut);
animatorSetFadeOut.addListener(
new Animator.AnimatorListener() {
@Override
public void onAnimationStart(Animator animation) {}
@Override
public void onAnimationEnd(Animator animation) {
setAlphaSet(false);
}
@Override
public void onAnimationCancel(Animator animation) {}
@Override
public void onAnimationRepeat(Animator animation) {}
});
animatorSetFadeOut.start();
}
}
