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机器人初学者: 如何探测图像视图中的具体位置?
原标题:Android beginner:how to detect specific position on imageview in android

我是机器人初学者。 我想在图像上检测具体位置, 从而触发各自触碰的函数。 不同的移动密度不同, 这样我就不能用像素来触发函数。 所以在我的程序里我选择什么选项 。

问题回答

使用视图。

yourView.setOnTouchListener(new View.OnTouchListener(){

    public boolean onTouch(View v, MotionEvent mE){ 
        switch (mE.getAction()){
            case MotionEvent.ACTION_DOWN:
                int positionTouchedX =  mE.getRawX();
                int positionTouchedY =  mE.getRawY();
        }
    }
}

这将为您提供用户触摸屏幕的坐标 。 您可以使用“ 获取资源” 来获取您的可提取大小或任何您在视图中使用的大小, 以查找这些 x,y 坐标如何与您图像上的位置相对应 。





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