Question

我有一张很长的照片。

我想循环从左向右移动它的动画。

请看一下＆＃34;城市线＆＃34;图像动画（底部一个）。问题是动画结束时的自由空间。如何让它真的无限？

以下是我在视频中所做的工作：

ivCity = (ImageView) findViewById(R.id.city);
    ViewTreeObserver cityObserver = ivCity.getViewTreeObserver();
    cityObserver.addOnPreDrawListener(new ViewTreeObserver.OnPreDrawListener() {
        public boolean onPreDraw() {
            Log.d(TAG, "ANIMATION PRE DRAW");
            // Remove after the first run so it doesn't fire forever
            ivCity.getViewTreeObserver().removeOnPreDrawListener(this);
            cityWidth = ivCity.getMeasuredWidth();

            Animation _translateAnimation = new TranslateAnimation(Animation.ABSOLUTE, getScreenWidth(), Animation.ABSOLUTE, -cityWidth + getScreenWidth(), Animation.ABSOLUTE, 0f, Animation.ABSOLUTE, 0f);
            //Animation _translateAnimation = new TranslateAnimation(Animation.ABSOLUTE, getScreenWidth() - cityWidth, Animation.ABSOLUTE, 1.0f, Animation.ABSOLUTE, 0f, Animation.ABSOLUTE, 0f);
            _translateAnimation.setDuration(10000);
            _translateAnimation.setStartOffset(0);
            _translateAnimation.setRepeatCount(Animation.INFINITE);
            _translateAnimation.setRepeatMode(Animation.RESTART);
            _translateAnimation.setInterpolator(new LinearInterpolator());
            _translateAnimation.setFillAfter(true);

            ivCity.startAnimation(_translateAnimation);

            return true;
        }
    });

布局是：

<AbsoluteLayout
    android:id="@+id/city_layout"
    android:layout_marginBottom="15dp"
    android:layout_above="@id/btn_settings"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content">

    <ImageView
        android:id="@+id/city"
        android:scaleType="center"
        android:layout_width="1657.5dp"
        android:layout_height="wrap_content"
        android:src="@drawable/city"/>

</AbsoluteLayout>

无限翻译动画

0 个答案: