Android：如何获取图像/ ImageView中的xy坐标？

Question

我的屏幕上有一个图像（ImageView）。 图像大约占据屏幕的一半，这意味着您可以同时单击图像和图像的侧面。

单击图像时如何在屏幕上获取x和y坐标？

我尝试使用onTouchEvent，但仅在单击图像外部时才会调用它，而在单击图像时不会调用它。

问候，Mattias

Answer 1

您可以使用getLocationOnScreen()

imageView.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View view) {
            int[] values = new int[2]; 
            view.getLocationOnScreen(values);
            Log.d("X & Y",values[0]+" "+values[1]);
        }
    });

同样，我的这个答案也将是有用的。

Answer 2

我最终根本没有在ImageView上设置任何OnClickListener。 相反，我只实现“ public void onTouch（MotionEvent event）”和“ public void onWindowFocusChanged（boolean hasFocus）”，如下所示：

private int fieldImgXY[] = new int[2];

@Override
public void onWindowFocusChanged(boolean hasFocus) {
    super.onWindowFocusChanged(hasFocus);

    // Use onWindowFocusChanged to get the placement of
    // the image because we have to wait until the image
    // has actually been placed on the screen  before we
    // get the coordinates. That makes it impossible to
    // do in onCreate, that would just give us (0, 0).
    fieldImage.getLocationOnScreen(fieldImgXY);
    Log.i(LOG_TAG, "fieldImage lockation on screen: " + 
            xyString(fieldImgXY[0], fieldImgXY[1]));
}

public boolean onTouchEvent(MotionEvent event) {
    if (event.getAction() == MotionEvent.ACTION_DOWN) {
        Log.i(LOG_TAG, "touch event - down");

        int eventX = (int) event.getX();
        int eventY = (int) event.getY();
        Log.i(LOG_TAG, "event (x, y) = " + xyString(eventX, eventY));

        int xOnField = eventX - fieldImgXY[0];
        int yOnField = eventY - fieldImgXY[1];
        Log.i(LOG_TAG, "on field (x, y) = " + xyString(xOnField, yOnField));
    }
    return super.onTouchEvent(event);
}

Answer 3

imageview.setOnTouchListener(new View.OnTouchListener() {
            @Override
            public boolean onTouch(View v, MotionEvent event) {
                if (event.getAction() == MotionEvent.ACTION_DOWN) {
                    int x = (int) event.getX();
                    int y = (int) event.getY();
                }
                return false;
            }
        });

Answer 4

在ImageView上使用OnClickListener来接收单击事件，或从ImageView中抽象on类并覆盖函数“ public void onTouch（MotionEvent evt）”以从该视图获取X / Y坐标。