Установка гравитации ImageView к центру в Android программно

Question

Я хочу установить гравитацию массива изображений, ImageIcons [i] в ​​центр со следующим кодом:

ImageIcons[i] = new ImageView(this);
ImageIcons[i].setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT,
LayoutParams.WRAP_CONTENT));
layout.addView(ImageIcons[i]);

И я застрял при установке гравитации. Я запрашиваю SOлюди, чтобы помочь мне в этом.

Спасибо

Answer 1

Попробуйте это

LinearLayout.LayoutParams layoutParams=new LinearLayout.LayoutParams(width, height);
layoutParams.gravity=Gravity.CENTER;
ImageIcons[i].setLayoutParams(layoutParams);

Answer 2

получить параметры макета из вида, изменить его и установить снова.

image.setBackgroundResource(R.drawable.mobile);
LayoutParams params = (LayoutParams) image.getLayoutParams();
params.gravity = Gravity.CENTER;
image.setLayoutParams(params);

Answer 3

Сначала сделайте ширину для match_parent, а затем установите гравитацию, иначе гравитация не будет работать. Надеюсь, она будет работать.

ImageIcons[i].setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT,
LayoutParams.WRAP_CONTENT));
ImageIcons.setGravity(Gravity.CENTER);

Answer 4

ImageView myImage = new ImageView(this);
FrameLayout.LayoutParams myImageLayout = new FrameLayout.LayoutParams(FrameLayout.LayoutParams.MATCH_PARENT,FrameLayout.LayoutParams.WRAP_CONTENT);
myImageLayout.gravity=Gravity.CENTER_HORIZONTAL | Gravity.CENTER_VERTICAL;
            myImage.setLayoutParams(myImageLayout);

Answer 5

, если ваш ImageView является потомком RelativeLayout

Тогда это может помочь..

public void setLogoPosition(String pos) 
{

    //_Watermark is ImageView Object

    RelativeLayout.LayoutParams layoutParams =
            (RelativeLayout.LayoutParams) _Watermark.getLayoutParams();


    layoutParams.addRule(RelativeLayout.ALIGN_PARENT_LEFT, 0);
    layoutParams.addRule(RelativeLayout.ALIGN_PARENT_RIGHT, 0);
    layoutParams.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM, 0);
    layoutParams.addRule(RelativeLayout.CENTER_IN_PARENT, 0);
    layoutParams.addRule(RelativeLayout.ALIGN_PARENT_TOP, 0);

    switch (pos) {
        case "topleft":
            layoutParams.addRule(RelativeLayout.ALIGN_PARENT_LEFT, RelativeLayout.TRUE);
            layoutParams.addRule(RelativeLayout.ALIGN_PARENT_TOP, RelativeLayout.TRUE);
            break;
        case "topright":
            layoutParams.addRule(RelativeLayout.ALIGN_PARENT_TOP, RelativeLayout.TRUE);
            layoutParams.addRule(RelativeLayout.ALIGN_PARENT_RIGHT, RelativeLayout.TRUE);
            break;
        case "bottomleft":
            layoutParams.addRule(RelativeLayout.ALIGN_PARENT_LEFT, RelativeLayout.TRUE);
            layoutParams.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM, RelativeLayout.TRUE);
            break;
        case "bottomright":
            layoutParams.addRule(RelativeLayout.ALIGN_PARENT_RIGHT, RelativeLayout.TRUE);
            layoutParams.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM, RelativeLayout.TRUE);
            break;
        case "center":
            layoutParams.addRule(RelativeLayout.CENTER_IN_PARENT, RelativeLayout.TRUE);
            break;
        case "topcenter":
            layoutParams.addRule(RelativeLayout.CENTER_IN_PARENT, RelativeLayout.TRUE);
            layoutParams.addRule(RelativeLayout.ALIGN_PARENT_TOP, RelativeLayout.TRUE);
            break;
        case "bottomcenter":
            layoutParams.addRule(RelativeLayout.CENTER_IN_PARENT, RelativeLayout.TRUE);
            layoutParams.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM, RelativeLayout.TRUE);
            break;
    }
    _Watermark.setLayoutParams(layoutParams);
}

Answer 6

Я думаю, что приведенный ниже код помогает кому-то

LinearLayout.LayoutParams layoutParams=new LinearLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);
layoutParams.leftMargin = 10;
layoutParams.rightMargin = 10;
parent.addView(tips[i], layoutParams);

Answer 7

    LinearLayout llBasicInfo = new LinearLayout(context);
    llBasicInfo.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT));
    llBasicInfo.setOrientation(LinearLayout.VERTICAL);
    ImageView imageView = new ImageView(context);
    LinearLayout.LayoutParams layoutParams =new LinearLayout.LayoutParams(200,200);
    layoutParams.gravity=Gravity.CENTER;
    imageView.setLayoutParams(layoutParams);
    llImage.addView(imageView);