Question

页: 1

在扩大<代码>LinearLayout时,我怎么能这样做?

我现在发言:LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LayoutParams.FILL_PARENT, 45);。

Answer 1

The best way to go for this kind of issue is create a dimens.xml file under values and put in your dip values there, and then in code you pull the dimensions from that file. That s what resources are for, right? =)

以下是<代码>dimens.xml:

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <dimen name="about_image_bottom">0dp</dimen>
</resources>

And this is how you can pull it out in code:

RelativeLayout.LayoutParams iv_params = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
iv_params.setMargins(0, 0, 0, (int) getResources().getDimension(R.dimen.about_image_bottom));

之后,你将参数确定到你所需要的任何目标,就我而言,是《图像评论》四:

iv.setLayoutParams(iv_params);

Answer 2

您可使用<条码>斜线/代码>并确定屏幕密度。与此类似:

int pixelsValue = 5; // margin in pixels
float d = context.getResources().getDisplayMetrics().density;
int margin = (int)(pixelsValue * d);

希望有助于^

Answer 3

Probably the best way would be to specify it in XML. Replace the normal LinearLayout tag with what ever class you created to extend the LinearLayout in the XML tag:

<com.example.MyLinearLayout 
              xmlns:android="http://schemas.android.com/apk/res/android"
              android:layout_width="fill_parent" 
              android:layout_height="45dp" 
              android:orientation="vertical" >
 ....

See here for more info.

友情链接