Android 的某种 JavaScript 的 PreventDefault

发布于 2025-01-04 05:59:43 字数 447 浏览 2 评论 0原文

我正在开发一个带有大表单的 Android 应用程序。布局包含在 ScrollView 中，因此我可以在表单中上下滚动。

问题是我必须以这种形式捕获一些抽奖（签名）。我为它创建了一个视图，它有一个 onTouchEvent：

public boolean onTouchEvent(MotionEvent event)
{
    //Here should be some kind of event.preventDefault();
    float eventX = event.getX();
    float eventY = event.getY();
    [...]
}

它捕获事件并水平绘制，但垂直它只绘制 1 厘米左右并开始滚动表单。

我一直在研究 MotionEvent 的方法并尝试一些没有成功的事情，我现在真的迷失了。

提前致谢！

原文

I'm developing an Android app with a big form. The Layout is contained by a ScrollView, so I can scroll up and down through the form.

The problem is that I have to capture some draws (a signature) in this form. I've created a view for it, and it has an onTouchEvent:

public boolean onTouchEvent(MotionEvent event)
{
    //Here should be some kind of event.preventDefault();
    float eventX = event.getX();
    float eventY = event.getY();
    [...]
}

It captures the event and draw horizontally, but vertically it draws just 1cm or so and starts to scroll the form.

I've been looking through MotionEvent's methods and trying some things without success, and I'm really lost right now.

Thanks in advance!

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初雪 2025-01-11 05:59:43

我在这里放置了解决方案，将其标记为已解决：

好的...我已经解决了。

public boolean onTouchEvent(MotionEvent event)
{
    getParent().requestDisallowInterceptTouchEvent(true);
    float eventX = event.getX();
    float eventY = event.getY();
    [...]
}

所以就解决了。无论如何，谢谢！

I put here the solution to mark it as solved:

Ok... I've solved it.

public boolean onTouchEvent(MotionEvent event)
{
    getParent().requestDisallowInterceptTouchEvent(true);
    float eventX = event.getX();
    float eventY = event.getY();
    [...]
}

So it's solved. Thanks anyway!

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