Question

我尝试下一步

LinearLayout.LayoutParams b = new LinearLayout.LayoutParams(
                        LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
                b.gravity =Gravity.CENTER;

                ivOne.setLayoutParams(b);

但这不起作用，布局左侧的图像视图

Answer 1

尝试将父级布局更改为RelativeLayout，并使用属性centerInParent：

RelativeLayout rootLayout = new RelativeLayout(this);
rootLayout.setLayoutParams( new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));
RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
params.addRule(RelativeLayout.CENTER_IN_PARENT);
ImageView ivOne = new ImageView(this);
ivOne.setImageResource(R.drawable.ic_launcher);
ivOne.setScaleType(ImageView.ScaleType.CENTER);
ivOne.setLayoutParams(params);
//TODO : add other views 
rootLayout.addView(ivOne);

Answer 2

您无法直接将params设置为ImageView，而应使用ImageIcons代替

试试这个：

ImageIcons[i] = new ImageView(this);
ImageIcons[i].setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT,
LayoutParams.WRAP_CONTENT));
layoutParams.gravity=Gravity.CENTER;
ImageIcons[i].setLayoutParams(layoutParams);

希望它有效..对我来说很好。！

Answer 3

您可以使用RelativeLayout及其centerInParent属性，例如zozelfelfo，或者您可以坚持使用LinearLayout并尝试：

LinearLayout.LayoutParams b = new LinearLayout.LayoutParams(
                        LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);

                ivOne.setScaleType(ImageView.ScaleType.CENTER);

                ivOne.setLayoutParams(b);

但是在这种方法中，你的ImageView将占用整个布局，所以如果你有其他视图也要小心。如果你这样做，那么你最好的选择是use RelativeLayout

如何从代码中设置ImageView在布局的中心？

3 个答案: