java - Android Spotlight 始终在拐角处

Question

与 sample 相同
但在我的项目中，聚光灯总是出现在角落里
我应该怎么办 ？
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，您的聚光灯目标是在目标 View 实际膨胀和创建之前创建的。要克服这个问题，您必须仅在 View 膨胀后创建聚光灯目标。

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;

所以在上面的代码示例中， oneX 和 oneY 为 0，所以你的聚光灯目标移动到左上角，只有四分之一是可见的。

使用 post 方法，可以从任何 View 调用。 Post 方法采用一个可运行线程，并确保在 View 正确膨胀后执行此可运行后的所有内容。

// 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();