导语
下面介绍使用Android的动画框架来制作赏心悦目的动画效果，想看理论知识戳我。
主要内容
- 灵动菜单
- 计时器动画
- 下拉展开动画
具体内容
先上三种效果的效果图：
灵动菜单
计时器动画
下拉展开动画
灵动菜单
- 布局文件
- Activity文件
public class PropertyTest extends Activity implements View.OnClickListener {
private int[] mRes = {R.id.imageView_a, R.id.imageView_b, R.id.imageView_c,
R.id.imageView_d, R.id.imageView_e};
private List mImageViews = new ArrayList();
private boolean mFlag = true;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.property);
for (int i = 0; i < mRes.length; i++) {
ImageView imageView = (ImageView) findViewById(mRes[i]);
imageView.setOnClickListener(this);
mImageViews.add(imageView);
}
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.imageView_a:
if (mFlag) {
startAnim();
} else {
closeAnim();
}
break;
default:
Toast.makeText(PropertyTest.this, "" + v.getId(),
Toast.LENGTH_SHORT).show();
break;
}
}
private void closeAnim() {
ObjectAnimator animator0 = ObjectAnimator.ofFloat(mImageViews.get(0),
"alpha", 0.5F, 1F);
ObjectAnimator animator1 = ObjectAnimator.ofFloat(mImageViews.get(1),
"translationY", 200F, 0);
ObjectAnimator animator2 = ObjectAnimator.ofFloat(mImageViews.get(2),
"translationX", 200F, 0);
ObjectAnimator animator3 = ObjectAnimator.ofFloat(mImageViews.get(3),
"translationY", -200F, 0);
ObjectAnimator animator4 = ObjectAnimator.ofFloat(mImageViews.get(4),
"translationX", -200F, 0);
AnimatorSet set = new AnimatorSet();
set.setDuration(500);
set.setInterpolator(new BounceInterpolator());
set.playTogether(animator0, animator1, animator2, animator3, animator4);
set.start();
mFlag = true;
}
private void startAnim() {
ObjectAnimator animator0 = ObjectAnimator.ofFloat(
mImageViews.get(0),
"alpha",
1F,
0.5F);
ObjectAnimator animator1 = ObjectAnimator.ofFloat(
mImageViews.get(1),
"translationY",
200F);
ObjectAnimator animator2 = ObjectAnimator.ofFloat(
mImageViews.get(2),
"translationX",
200F);
ObjectAnimator animator3 = ObjectAnimator.ofFloat(
mImageViews.get(3),
"translationY",
-200F);
ObjectAnimator animator4 = ObjectAnimator.ofFloat(
mImageViews.get(4),
"translationX",
-200F);
AnimatorSet set = new AnimatorSet();
set.setDuration(500);
set.setInterpolator(new BounceInterpolator());
set.playTogether(
animator0,
animator1,
animator2,
animator3,
animator4);
set.start();
mFlag = false;
}
}
- 效果图
效果图
- 素材
| a.png | b.png | c.png | d.png | e.png |
|---|---|---|---|---|
a.png
|
b.png
|
c.png
|
d.png
|
e.png
|
计时器动画
- 布局文件
- Activity文件
public class TimerTest extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.timer);
}
public void tvTimer(final View view) {
ValueAnimator valueAnimator = ValueAnimator.ofInt(0, 100);
valueAnimator.addUpdateListener(
new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator animation) {
((TextView) view).setText("$ " +
(Integer) animation.getAnimatedValue());
}
});
valueAnimator.setDuration(3000);
valueAnimator.start();
}
}
- 效果图
计时器动画
下拉展开动画
- 布局文件
- Activity文件
public class DropTest extends Activity {
private LinearLayout mHiddenView;
private float mDensity;
private int mHiddenViewMeasuredHeight;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.drop);
mHiddenView = (LinearLayout) findViewById(R.id.hidden_view);
// 获取像素密度
mDensity = getResources().getDisplayMetrics().density;
// 获取布局的高度
mHiddenViewMeasuredHeight = (int) (mDensity * 40 + 0.5);
}
public void llClick(View view) {
if (mHiddenView.getVisibility() == View.GONE) {
// 打开动画
animateOpen(mHiddenView);
} else {
// 关闭动画
animateClose(mHiddenView);
}
}
private void animateOpen(final View view) {
view.setVisibility(View.VISIBLE);
ValueAnimator animator = createDropAnimator(
view,
0,
mHiddenViewMeasuredHeight);
animator.start();
}
private void animateClose(final View view) {
int origHeight = view.getHeight();
ValueAnimator animator = createDropAnimator(view, origHeight, 0);
animator.addListener(new AnimatorListenerAdapter() {
public void onAnimationEnd(Animator animation) {
view.setVisibility(View.GONE);
}
});
animator.start();
}
private ValueAnimator createDropAnimator(
final View view, int start, int end) {
ValueAnimator animator = ValueAnimator.ofInt(start, end);
animator.addUpdateListener(
new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator valueAnimator) {
int value = (Integer) valueAnimator.getAnimatedValue();
ViewGroup.LayoutParams layoutParams =
view.getLayoutParams();
layoutParams.height = value;
view.setLayoutParams(layoutParams);
}
});
return animator;
}
}
- 效果图
下拉展开动画
更多内容戳这里（整理好的各种文集）