Android动画特效实例
16lz
2021-01-26
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
<?xml version="1.0" encoding="utf-8"?> - 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
- 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
<?xml version="1.0" encoding="utf-8"?> - 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
下拉展开动画
- 布局文件
<?xml version="1.0" encoding="utf-8"?> - 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
更多内容戳这里（整理好的各种文集）
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