最近遇到一个需求模仿抖音点赞效果 废话不多说，直接上代码
自定义一个view 在布局中引用它就可以
public class Love extends RelativeLayout {
private Context mContext;
float[] num = {-30, -20, 0, 20, 30};//随机心形图片角度
public Love(Context context) {
super(context);
initView(context);
}
public Love(Context context, @Nullable AttributeSet attrs) {
super(context, attrs);
initView(context);
}
public Love(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
initView(context);
}
private void initView(Context context) {
mContext = context;
}
@Override
protected void dispatchDraw(Canvas canvas) {
super.dispatchDraw(canvas);
ImageView imageView = new ImageView(mContext);
LayoutParams params = new LayoutParams(100, 100);
params.leftMargin = getWidth() - 200;
params.topMargin = getHeight() / 2 - 300;
imageView.setImageDrawable(getResources().getDrawable(R.drawable.heart_red));
imageView.setLayoutParams(params);
addView(imageView);
imageView.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(mContext, "这里是点击爱心的动画，待展示", Toast.LENGTH_SHORT).show();
}
});
}
@Override
public boolean onTouchEvent(MotionEvent event) {
final ImageView imageView = new ImageView(mContext);
LayoutParams params = new LayoutParams(300, 300);
params.leftMargin = (int) event.getX() - 150;
params.topMargin = (int) event.getY() - 300;
imageView.setImageDrawable(getResources().getDrawable(R.drawable.heart_red));
imageView.setLayoutParams(params);
addView(imageView);
AnimatorSet animatorSet = new AnimatorSet();
animatorSet.play(scale(imageView, "scaleX", 2f, 0.9f, 100, 0))
.with(scale(imageView, "scaleY", 2f, 0.9f, 100, 0))
.with(rotation(imageView, 0, 0, num[new Random().nextInt(4)]))
.with(alpha(imageView, 0, 1, 100, 0))
.with(scale(imageView, "scaleX", 0.9f, 1, 50, 150))
.with(scale(imageView, "scaleY", 0.9f, 1, 50, 150))
.with(translationY(imageView, 0, -600, 800, 400))
.with(alpha(imageView, 1, 0, 300, 400))
.with(scale(imageView, "scaleX", 1, 3f, 700, 400))
.with(scale(imageView, "scaleY", 1, 3f, 700, 400));
animatorSet.start();
animatorSet.addListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
super.onAnimationEnd(animation);
removeViewInLayout(imageView);
}
});
return super.onTouchEvent(event);
}
public static ObjectAnimator scale(View view, String propertyName, float from, float to, long time, long delayTime) {
ObjectAnimator translation = ObjectAnimator.ofFloat(view
, propertyName
, from, to);
translation.setInterpolator(new LinearInterpolator());
translation.setStartDelay(delayTime);
translation.setDuration(time);
return translation;
}
public static ObjectAnimator translationX(View view, float from, float to, long time, long delayTime) {
ObjectAnimator translation = ObjectAnimator.ofFloat(view
, "translationX"
, from, to);
translation.setInterpolator(new LinearInterpolator());
translation.setStartDelay(delayTime);
translation.setDuration(time);
return translation;
}
public static ObjectAnimator translationY(View view, float from, float to, long time, long delayTime) {
ObjectAnimator translation = ObjectAnimator.ofFloat(view
, "translationY"
, from, to);
translation.setInterpolator(new LinearInterpolator());
translation.setStartDelay(delayTime);
translation.setDuration(time);
return translation;
}
public static ObjectAnimator alpha(View view, float from, float to, long time, long delayTime) {
ObjectAnimator translation = ObjectAnimator.ofFloat(view
, "alpha"
, from, to);
translation.setInterpolator(new LinearInterpolator());
translation.setStartDelay(delayTime);
translation.setDuration(time);
return translation;
}
public static ObjectAnimator rotation(View view, long time, long delayTime, float... values) {
ObjectAnimator rotation = ObjectAnimator.ofFloat(view, "rotation", values);
rotation.setDuration(time);
rotation.setStartDelay(delayTime);
rotation.setInterpolator(new TimeInterpolator() {
@Override
public float getInterpolation(float input) {
return input;
}
});
return rotation;
}
}
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