java–Android通过动画连续移动背景

概述我想要做的是水平移动背景并让它无限重复.我尝试使用带有动画的ImageSwitcher来实现这种效果,但无法让它正常工作.这是我到目前为止的代码publicclassMainActivityextendsAppCompatActivityimplementsViewSwitcher.ViewFactory{privateAnimationanimSlide;p

我想要做的是水平移动背景并让它无限重复.

我尝试使用带有动画的ImageSwitcher来实现这种效果,但无法让它正常工作.这是我到目前为止的代码

public class MainActivity extends AppCompatActivity implements VIEwSwitcher.VIEwFactory {    private Animation animslIDe;    private ImageSwitcher image;    private ImageVIEw imagePop;    @OverrIDe    protected voID onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentVIEw(R.layout.activity_main);        image = (ImageSwitcher) findVIEwByID(R.ID.image_switcher);        image.setFactory(this);        image.setimageResource(R.drawable.zc06);        Animation in = AnimationUtils.loadAnimation(this, androID.R.anim.slIDe_in_left);        in.setDuration(10000);        Animation out = AnimationUtils.loadAnimation(this, androID.R.anim.slIDe_out_right);        out.setDuration(10000);        image.setInAnimation(in);        image.setoutAnimation(out);        Timer timer = new Timer();        timer.scheduleAtFixedrate(new TimerTask() {            @OverrIDe            public voID run() {                runOnUiThread(new Runnable() {                    @OverrIDe                    public voID run() {                        image.setimageResource(R.drawable.zc06);                    }                });            }        }, 0, 10000);        Animation mZoomInAnimation = AnimationUtils.loadAnimation(this, R.anim.zoom_in);        Animation mZoomOutAnimation = AnimationUtils.loadAnimation(this, R.anim.zoom_out);        imagePop.startAnimation(mZoomInAnimation);        imagePop.startAnimation(mZoomOutAnimation);    }    @OverrIDe    public VIEw makeVIEw() {        ImageVIEw myVIEw = new ImageVIEw(getApplicationContext());        return myVIEw;    }}

解决方法:

为什么不尝试自己动画背景而不是使用VIEwSwitcher？您只需要一个简单的ValueAnimator：

首先将两个相同的ImageVIEw添加到您的布局中,并将相同的背景图像设置为它们：

<?xml version="1.0" enCoding="utf-8"?><FrameLayout    xmlns:androID="http://schemas.androID.com/apk/res/androID"    androID:layout_wIDth="match_parent"    androID:layout_height="match_parent">    <ImageVIEw        androID:ID="@+ID/background_one"        androID:layout_wIDth="match_parent"        androID:layout_height="match_parent"        androID:src="@drawable/background"/>    <ImageVIEw        androID:ID="@+ID/background_two"        androID:layout_wIDth="match_parent"        androID:layout_height="match_parent"        androID:src="@drawable/background"/></FrameLayout>

然后使用ValueAnimator为其translateX属性设置动画,但按宽度偏移它们：

final ImageVIEw backgroundOne = (ImageVIEw) findVIEwByID(R.ID.background_one);final ImageVIEw backgroundTwo = (ImageVIEw) findVIEwByID(R.ID.background_two);final ValueAnimator animator = ValueAnimator.offloat(0.0f, 1.0f);animator.setRepeatCount(ValueAnimator.INFINITE);animator.setInterpolator(new linearInterpolator());animator.setDuration(10000L);animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {    @OverrIDe    public voID onAnimationUpdate(ValueAnimator animation) {        final float progress = (float) animation.getAnimatedValue();        final float wIDth = backgroundOne.getWIDth();        final float translationX = wIDth * progress;        backgroundOne.setTranslationX(translationX);        backgroundTwo.setTranslationX(translationX - wIDth);    }});animator.start();

这导致连续动画无限期地重复背景,应该看起来像这样：

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