android.widget.ImageView#getX ( )源码实例Demo

private void maybeInitProperties(ImageView child, View dependency) {
    if (mStartYPosition == 0)
        mStartYPosition = (int) (dependency.getY());

    if (mFinalYPosition == 0)
        mFinalYPosition = (dependency.getHeight() /2);

    if (mStartHeight == 0)
        mStartHeight = child.getHeight();

    if (mStartXPosition == 0)
        mStartXPosition = (int) (child.getX() + (child.getWidth() / 2));

    if (mFinalXPosition == 0)
        mFinalXPosition = mContext.getResources().getDimensionPixelOffset(R.dimen.abc_action_bar_content_inset_material) + ((int) mCustomFinalHeight / 2);

    if (mStartToolbarPosition == 0)
        mStartToolbarPosition = dependency.getY();

    if (mChangeBehaviorPoint == 0) {
        mChangeBehaviorPoint = (child.getHeight() - mCustomFinalHeight) / (2f * (mStartYPosition - mFinalYPosition));
    }
}
 

private void movePin(double x, double y, double z) {
    //  todo this is currently hard coded for 2D setups

    final ImageView ImageView_BitmapView = findViewById(R.id.map);
    final ImageView ImageView_Pin = findViewById(R.id.pin);
    ImageView_Pin.setVisibility(View.VISIBLE);

    //  0,0 point is 82.4427% down the image and 2.336% from the left of the image
    float x_image_offset = (ImageView_BitmapView.getWidth() * 0.02336f);
    float y_image_offset = (ImageView_BitmapView.getHeight() * 0.824427f);

    x_image_offset = ImageView_BitmapView.getX() + x_image_offset;
    y_image_offset = ImageView_BitmapView.getY() + y_image_offset;

    float pin_width = ImageView_Pin.getWidth();
    float pin_height = ImageView_Pin.getHeight();
    float x_pin_offset = (pin_width / 2.0f);
    float y_pin_offset = (pin_height) - (5.0f / 72.0f * pin_height); //  There are a few pixels at the bottom of the pin
    //  Account for the fact that the Pin is pointing to the lower middle of the image view
    float pinOriginX = x_image_offset - x_pin_offset;
    float pinOriginY = y_image_offset - y_pin_offset;
    //ImageView_Pin.setX(pinOriginX);
    //ImageView_Pin.setY(pinOriginY);

    float floorWidth = ImageView_BitmapView.getWidth() * (1772.0f / 3982.0f);
    float floorHeight = ImageView_BitmapView.getHeight() * (1488.0f / 2096.0f);

    float scaledX = (float) (x / 8370.0f * floorWidth);
    float scaledY = (float) (y / 7000.0f * floorHeight);
    ImageView_Pin.setX(pinOriginX + scaledX);
    ImageView_Pin.setY(pinOriginY - scaledY);
}
 

/**
 * Crop the bitmap to only the part of the scansegment. The bitmap should only contain the part
 * that displays the MRZ of a travel document.
 * @param bitmap - The bitmap created from the camerapreview
 * @param scanSegment - Scansegment, the segment that should be scanned with OCR
 * @return
 */
public static Bitmap cropBitmap(Bitmap bitmap, ImageView scanSegment) {
    int startX = (int) scanSegment.getX();
    int startY = (int) scanSegment.getY();
    int width = scanSegment.getWidth();
    int length = scanSegment.getHeight();
    return Bitmap.createBitmap(bitmap, startX, startY, width, length);
}
 

/**
 * Get the scan rectangle.
 * @return The rectangle.
 */
public static Rect getScanRect(ImageView scanSegment) {
    int startX = (int) scanSegment.getX();
    int startY = (int) scanSegment.getY();
    int width = scanSegment.getWidth();
    int length = scanSegment.getHeight();
    return new Rect(startX, startY, startX + width, startY + length);
}
 

public void saveIconsToPref() {
    for(ImageView view : viewList) {
        IconHolder holder = (IconHolder) view.getTag();
        addToPrefPackageList(holder.packageName);
        holder.x_pos = view.getX();
        holder.y_pos = view.getY();
    }
}