Android 高仿抖音雙擊點贊效果

最近遇到一個需求模仿抖音點贊效果  廢話不多說，直接上代碼

 

自定義一個view 在佈局中引用它就可以

 

public class Love extends RelativeLayout {
    private Context mContext;
    float[] num = {-30, -20, 0, 20, 30};//隨機心形圖片角度

    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, "這裏是點擊愛心的動畫，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;
    }
    }