19

这是代码-

FrameLayout.LayoutParams params = (FrameLayout.LayoutParams) searchPin.getLayoutParams();
params.setMargins(135, 176, 0, 0);
//params.leftMargin = 135; // also not worked 
//params.topMargin = 376;
searchPin.setLayoutParams(params);

无论何时，从 xml 它的工作 -

android:layout_marginLeft="135dp"

可能是什么原因？我错过了什么吗！

-thnx

4

6 回答 6

17

尝试这个：

params.gravity = Gravity.TOP;
于 2012-07-05T15:59:00.563 回答
12

我有一个RelativeLayout 的FrameLayout 子，所以框架试图将FrameLayout 参数转换为RelativeLayout，我用这种方式解决了

FrameLayout mylayout = (FrameLayout) view.findViewById(R.id.mylayout);
ViewGroup.MarginLayoutParams params = (MarginLayoutParams) mylayout.getLayoutParams();
params.setMargins(1, 2, 3, 4);
mylayout.setLayoutParams(params);
于 2012-08-05T23:28:58.737 回答
4

我认为您缺少的是，当您以编程方式设置元素的参数时，这些参数实际上是提供给父视图的，因此它知道如何定位元素。参数不会设置回元素本身。考虑以下代码示例。另请注意，布局参数属于父级的类型。

LinearLayout linearLayout = new LinearLayout(this);

LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(
     LinearLayout.LayoutParams.FILL_PARENT, 
     LinearLayout.LayoutParams.WRAP_CONTENT);

layoutParams.setMargins(6,6,6,6);

Button someButton=new Button(this);
someButton.setText("some text");

linearLayout.addView(someButton, layoutParams);
于 2011-11-12T00:41:57.803 回答
3

你可以试试这个

FrameLayout.LayoutParams srcLp = (FrameLayout.LayoutParams)searchPin.getLayoutParams();
FrameLayout.LayoutParams lp = new FrameLayout.LayoutParams(srcLp.width, srcLp.height, srcLp.gravity);

lp.setMargins(srcLp.leftMargin, srcLp.topMargin, srcLp.rightMargin, srcLp.bottomMargin);

searchPin.setLayoutParams(lp);
于 2014-01-21T13:42:55.860 回答
2

简单的解决方案-

searchPin = (ImageView) findViewById(R.id.waypts_search_pin);
searchPin.setPadding(135, 176, 0, 0);
于 2011-11-12T10:06:36.490 回答
-1

只需使用 LayoutParams 而不是 FrameLayout.LayoutParams

LayoutParams params = (LayoutParams) searchPin.getLayoutParams();
params.setMargins(135, 176, 0, 0);
searchPin.setLayoutParams(params);

这对我有用

于 2012-07-03T15:32:45.487 回答