Android setMargins不能以编程方式工作

Question

<RelativeLayout>

    ...

    <ImageView
      android:id="@+id/imageView1"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_alignParentLeft="true"
      android:layout_marginLeft="10dp"
      android:layout_marginTop=”11dp”
      android:background=”@drawable/image”  />

</RelativeLayout>

然后我需要以编程方式设置边距：

ImageView imageView = (ImageView) findViewRoot(R.id.imageView1);
RelativeLayout.LayoutParams params = (RelativeLayout.LayoutParams) imageView.getLayoutParams();
params.width = 100;
params.height = 100;
params.setMargins(0,0,0,0); //NOT WORK
imageView.setLayoutParams(params);

ImageView仍然有marginLeft 10和marginTop 11；

Answer 1

您是否尝试过制作一个新的LayoutParams？

ImageView imageView = (ImageView) findViewRoot(R.id.imageView1);
RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(
    RelativeLayout.LayoutParams.WRAP_CONTENT,      
    RelativeLayout.LayoutParams.WRAP_CONTENT
);
params.setMargins(0,0,0,0);
imageView.setLayoutParams(params);