setCompoundDrawables,Drawable类,在不同分辨率下的设置
2014-08-12 10:55
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手工设置文本与图片相对位置时,常用到如下方法:
setCompoundDrawables(left, top, right, bottom);
setCompoundDrawablesWithIntrinsicBounds(left,
top, right, bottom)
意思是设置Drawable显示在text的左、上、右、下位置。
(Textview、Button都可以)
但是两者有些区别:
1、获取资源文件夹图片的Drawable对象
this.getResources().getDrawable(R.drawable.icon)
2、获取与设置Drawable的长和宽
RadioButton rr =(RadioButton)this.findViewById(R.id.radio_button0);
Drawable d1 = rr.getCompoundDrawables()[1]; //此处取的是android:drawableTop的图片
drawable.setBounds(0, 0, d1.getIntrinsicWidth(), d1.getIntrinsicHeight());
//getIntrinsicWidth()取得的是Drawable在手机上的宽度,所以不同分辨率下获取到的值是不同的,关键所在处
setCompoundDrawables(left, top, right, bottom);
setCompoundDrawablesWithIntrinsicBounds(left,
top, right, bottom)
意思是设置Drawable显示在text的左、上、右、下位置。
(Textview、Button都可以)
但是两者有些区别:
setCompoundDrawables 画的drawable的宽高是按drawable.setBound()设置的宽高,所以才有The Drawables must already have had setBounds(Rect) called.意思是说使用之前必须使用Drawable.setBounds设置Drawable的长宽。 而setCompoundDrawablesWithIntrinsicBounds是画的drawable的宽高是按drawable固定的宽高,所以才有The Drawables' bounds will be set to their intrinsic bounds.这句话之说! |
1、获取资源文件夹图片的Drawable对象
this.getResources().getDrawable(R.drawable.icon)
2、获取与设置Drawable的长和宽
RadioButton rr =(RadioButton)this.findViewById(R.id.radio_button0);
Drawable d1 = rr.getCompoundDrawables()[1]; //此处取的是android:drawableTop的图片
drawable.setBounds(0, 0, d1.getIntrinsicWidth(), d1.getIntrinsicHeight());
//getIntrinsicWidth()取得的是Drawable在手机上的宽度,所以不同分辨率下获取到的值是不同的,关键所在处
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