Android记录5--View相关小知识

开发 评论

动态设置padding值

1
2
ImageView imageView=new ImageView(Contextcontext);
imageView.setPadding(left,top,right,bottom);

动态设置margin值

1
2
3
RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(10,10);//这里的单位是像素
params.setMargins(0, ScreenUtil.dip2px(5), 0, 0);
view.setLayoutParams(params);

动态设置居中

1
2
3
RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(10,10);//这里的单位是像素
params.addRule(RelativeLayout.CENTER_HORIZONTAL, RelativeLayout.TRUE);
view.setLayoutParams(params);

同时也可以设置其他对齐方式

1
2
3
lp.addRule(RelativeLayout.ALIGN_WITH_PARENT_TOP);//父容器顶部对齐
lp.addRule(RelativeLayout.POSITION_BELOW, view1);//与view1底部对齐
lp.addRule(RelativeLayout.ALIGN_LEFT, view2);//与view2左对齐

     

动态设置宽高

1
2
3
RelativeLayout.LayoutParams Params =  (RelativeLayout.LayoutParams)mView.getLayoutParams();
Params.height = 100;
mView.setLayoutParams(linearParams);

RelativeLayout.LayoutParams根据父布局的类型可以改为
RelativeLayout.LayoutParams、
LinearLayout.LayoutParams、
ViewGroup.LayoutParams
三选一

MaydaychenDeveloper & Infra engineer

前Android/Vue开发，现Infra从业人员，主营监控/AWS