Question

同样的样本但在我的项目中，聚光灯始终显示在角落里我该怎么办？或同一个图书馆的任何报价？

这是我的代码

    View one = findViewById(R.id.img_drawer);
        int[] oneLocation = new int[2];
        one.getLocationInWindow(oneLocation);
        float oneX = oneLocation[0] + one.getWidth() / 2f;
        float oneY = oneLocation[1] + one.getHeight() / 2f;
        // make an target
        SimpleTarget firstTarget = new SimpleTarget.Builder(TripActivity.this).setPoint(oneX, oneY)
                .setRadius(100f)
                .setTitle("first title")
                .setDescription("first description")
                .build();
Spotlight.with(TripActivity.this)
                .setDuration(1000L)
                .setAnimation(new DecelerateInterpolator(2f))
                .setTargets(firstTarget)
                .setOnSpotlightStartedListener(new OnSpotlightStartedListener() {
                    @Override
                    public void onStarted() {
                        Toast.makeText(TripActivity.this, "spotlight is started", Toast.LENGTH_SHORT)
                                .show();
                    }
                })
                .setOnSpotlightEndedListener(new OnSpotlightEndedListener() {
                    @Override
                    public void onEnded() {
                        Toast.makeText(TripActivity.this, "spotlight is ended", Toast.LENGTH_SHORT).show();
                    }
                })
                .start();

和图片

Answer 1

实际上，实际上是在实际放大和创建目标视图之前创建了Spotlight目标。为解决此问题，只有在视图变大后，才必须创建聚光灯目标。

View one = findViewById(R.id.img_drawer);
int[] oneLocation = new int[2];
one.getLocationInWindow(oneLocation);
float oneX = oneLocation[0] + one.getWidth() / 2f;
float oneY = oneLocation[1] + one.getHeight() / 2f;

因此在上面的代码示例中，oneX和oneY为0，因此您的聚光灯目标移到了左上角，只有四分之一可见。

使用post方法，可以从任何视图调用该方法。 Post方法采用一个可运行的线程，并确保一旦视图适当膨胀，此post可运行的所有内容都将被执行。

// create globally
SimpleTarget firstTarget = null;

// do this in onCreate of Activity or in onCreateView of Fragment
View one = findViewById(R.id.img_drawer);

one.post(new Runnable(){
    @Override
    public void run(){
        int[] oneLocation = new int[2];
        one.getLocationInWindow(oneLocation);
        float oneX = oneLocation[0] + one.getWidth() / 2f;
        float oneY = oneLocation[1] + one.getHeight() / 2f;

        // make a target
        firstTarget = new SimpleTarget.Builder(TripActivity.this)
            .setPoint(oneX, oneY)
            .setRadius(100f)
            .setTitle("first title")
            .setDescription("first description")
            .build();
    }
});

// Do this in onStart of Activity or in onViewCreated of Fragment
if (firstTarget != null)
    Spotlight.with(TripActivity.this)
        .setDuration(1000L)
        .setAnimation(new DecelerateInterpolator(2f))
        .setTargets(firstTarget)
        .setOnSpotlightStartedListener(new OnSpotlightStartedListener() {
            @Override
            public void onStarted() {
                Toast.makeText(TripActivity.this, "spotlight is started", Toast.LENGTH_SHORT).show();
            }
        })
        .setOnSpotlightEndedListener(new OnSpotlightEndedListener() {
            @Override
            public void onEnded() {
                Toast.makeText(TripActivity.this, "spotlight is ended", Toast.LENGTH_SHORT).show();
            }
        })
        .start();

Answer 2

您的视图尚未准备好，您必须在doOnPreDraw中调用它（我正在使用core-ktx lib）

 binding.root.doOnPreDraw {
        showSpotlight() // call it here
 }

Answer 3

其背后的原因是视图（要突出显示的元素）尚未绘制到根布局中，因此您试图在该视图上添加聚光灯。

下面的解决方案解决了我的问题。

view.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
    @Override public void onGlobalLayout() {
        view.getViewTreeObserver().removeOnGlobalLayoutListener(this);

        SimpleTarget target = new SimpleTarget.Builder(activity)
                .setPoint(view)
                .setRadius(radius)
                .setTitle(title)
                .setDescription(description)
                .build();

        Spotlight.with(activity)
                .setDuration(500L)
                .setDuration(500L)
                .setAnimation(new DecelerateInterpolator(1f))
                .setTargets(target)
                .setOnSpotlightStartedListener(new OnSpotlightStartedListener() {
                    @Override
                    public void onStarted() {

                    }
                })
                .setOnSpotlightEndedListener(new OnSpotlightEndedListener() {
                    @Override
                    public void onEnded() {
                        App.getLocalStorage().write(sharedPrefKey, true);
                    }
                })
                .start();

    }
});

Android Spotlight Always on Corner点

3 个答案: