动画基础

starUML破解步骤：http://blog.sina.com.cn/s/blog_924d6a570102w845.html 

导航条从顶部动画进入屏幕

 <?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
     android:duration="300">
    <translate
        android:fromYDelta="-100%"
        android:toYDelta="0"/>
    <alpha
        android:fromAlpha="0"
        android:toAlpha="1"/>
</set>


mEnterFromTop = AnimationUtils.loadAnimation(mContext, R.anim.enter_from_top);


mEnterFromTop.setAnimationListener(new AnimationImpl() {
@Override
public void onAnimationEnd(Animation animation) {
super.onAnimationEnd(animation);
mTitleBar.setVisibility(VISIBLE);
}
});


导航条从顶部动画离开屏幕
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
     android:duration="300">
    <translate
        android:fromYDelta="0"
        android:toYDelta="-100%"/>
    <alpha
        android:fromAlpha="1"
        android:toAlpha="0"/>
</set>
mExitFromTop.setAnimationListener(new AnimationImpl() {
@Override
public void onAnimationEnd(Animation animation) {
super.onAnimationEnd(animation);
mTitleBar.setVisibility(GONE);
}
});
/**
 * 带动画效果的显隐标题栏和控制栏
 */
private void animateShowOrHideBars(boolean show) {
mTitleBar.clearAnimation();
mController.clearAnimation();


if (show) {
if (mTitleBar.getVisibility() != VISIBLE) {
mTitleBar.startAnimation(mEnterFromTop);
mController.startAnimation(mEnterFromBottom);
}
} else {
if (mTitleBar.getVisibility() != GONE) {
mTitleBar.startAnimation(mExitFromTop);
mController.startAnimation(mExitFromBottom);
}
}
}