习惯了直接在xml里设置margin(距离上下左右都是10dip),如:
<ImageView android:layout_margin="10dip" android:src="@drawable/image" />
只是有些情况下,需要在java代码里来写。
API中,android.view.ViewGroup.MarginLayoutParams有个方法setMargins(left, top, right, bottom)。可是View本身没有setMargin方法,怎么办呢?
看见API上,其直接的子类有: FrameLayout.LayoutParams, LinearLayout.LayoutParams and RelativeLayout.LayoutParams。我们我们可以这样写:
ImageView imageView = = new ImageView(getContext());
LinearLayout.LayoutParams lp = new
LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT, 1); // ,
1是可选写的
lp.setMargins(10, 20, 30,
40);
imageView.setLayoutParams(lp);
Android如何在java代码中设置margin,布布扣,bubuko.com
原文:http://www.cnblogs.com/hudabing/p/3745165.html