Android动态设置布局的LayoutParams属性总遇到造型异常

Android动态设置布局的setLayoutParams（）属性总遇到造型异常问题

<RelativeLayout

android:id="@+id/introduce"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:layout_marginLeft="5dp"

android:layout_marginRight="5dp"

android:background="@drawable/sd_k" >

<LinearLayout

android:id="@+id/introduce_content"

android:layout_width="match_parent"

android:layout_height="54dp"

android:layout_below="@id/introduce_title" >

<TextView

android:id="@+id/introduce_content_text"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:layout_marginLeft="13dp"

android:layout_marginRight="13dp"

android:layout_marginTop="10dp"

android:text="@string/booklist_authordetail"

android:textColor="#a5aaab"

android:textSize="12sp" />

</LinearLayout>

</RelativeLayout>

就如上边的布局为例：

1：如果动态改变TextView的LayoutParams

LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(

FrameLayout.LayoutParams.MATCH_PARENT,

FrameLayout.LayoutParams.WRAP_CONTENT);

TextView.setLayoutParams(params);

2：如果调整TextView外边的LinearLayout的LayoutParams

RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(

FrameLayout.LayoutParams.MATCH_PARENT,

FrameLayout.LayoutParams.WRAP_CONTENT);

LinearLayout.setLayoutParams(params);

从上边可以看出来动态设置LayoutParams需要知道父空间是什么布局