Question

我创建了一个按钮，使用上边距和左边距设置位置并添加到布局中。如果我这样做，按钮就位于正确的位置。

现在我需要添加翻译动画，我正在使用viewPropertyAnimator。不幸的是，这会使初始按钮位置无效，从而使动画从（0,0）开始。

以下是我写的代码。

        final Button bonus_button = new Button(this);

        int bonus_y_start, bonus_x_start, bonus_y_end, bonus_x_end;

        bonus_x_start = random.nextInt(2) == 1 ? layout_width + button_size : -1 * button_size;
        bonus_y_start = random.nextInt(layout_height + 2 * button_size) - button_size;

        if (bonus_x_start < 0) 
            bonus_x_end = layout_width + button_size;
        else
            bonus_x_end = -1 * button_size;

        bonus_y_end = random.nextInt(layout_height + button_size) - button_size;

        RelativeLayout.LayoutParams bonus_l = new RelativeLayout.LayoutParams(button_size, button_size);
        bonus_l.leftMargin = bonus_x_start;
        bonus_l.topMargin = bonus_y_start;
        bonus_button.setLayoutParams(bonus_l);

        bonus_button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                mHandler.sendEmptyMessage(MSG_PAUSE_TIMER);
                final Handler handler = new Handler();
                handler.postDelayed(new Runnable() {
                    @Override
                    public void run() {
                        mHandler.sendEmptyMessage(MSG_RESUME_TIMER);
                    }
                }, 2000);
            }
        });

        bonus_button.bringToFront();

        ViewPropertyAnimator animator = bonus_button.animate().x(bonus_x_end).y(bonus_y_end);
        animator.setDuration(2000);
        animator.withEndAction(new Runnable() {
            @Override
            public void run() {
                layout.removeView(bonus_button);
            }
        });

        layout.addView(bonus_button);

任何人都知道我在哪里做错了？

Answer 1

使用bonus_l.setX(bonus_x_start)和bonus_l.setY(bonus_x_start)代替边距

ViewPropertyAnimator弄乱视图布局位置

1 个答案: