有布局大致如下:
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<FrameLayout
android:id="@+id/framelayout"
android:layout_width="match_parent"
android:layout_height="200dip" >
---------
---------
</FrameLayout>
</LinearLayout>
现要在代码中设置framelayout的高度:
//LinearLayout 为父容器布局
LinearLayout.LayoutParams p = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT,
LinearLayout.LayoutParams.MATCH_PARENT);
framelayout.setLayoutParams(p); //设置framelayout宽高(MATCH_PARENT,MATCH_PARENT)
//设置tv位置(垂直居中、居右,距离右边15px)
RelativeLayout.LayoutParams rl = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT,
RelativeLayout.LayoutParams.MATCH_PARENT);
tv.setGravity(Gravity.RIGHT|Gravity.CENTER_VERTICAL); //tv的父容器为RelativeLayout
rl.rightMargin = ScreenUtils.dipConvertPx(mContext, 15);
tv.setLayoutParams(rl);
/**
* 根据手机的分辨率从 dp 的单位 转成为 px(像素)
* @param mContext
* @param dpValue
*/
public static int dipConvertPx(Context mContext, float dpValue) {
try {
float scale = mContext.getResources().getDisplayMetrics().density;
return (int) (dpValue * scale + 0.5f);
} catch (Exception e) {
}
return -1;
}
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<include
android:id="@+id/ahm_top_relative"
layout="@layout/include_homemain_top" />
<ViewPager
android:id="@+id/ahm_viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="@+id/ahm_top_relative"
android:scrollbars="none" />
<RadioGroup
android:id="@+id/ahm_radiogroup"
android:layout_width="match_parent"
android:layout_height="55.0dip"
android:layout_alignParentBottom="true"
android:background="@color/bg_E6ffffff"
android:orientation="horizontal"
android:paddingBottom="2dp"
android:paddingTop="2dp">
<RadioButton
android:id="@+id/ahm_message_rb"
----
---- />
<RadioButton
android:id="@+id/ahm_index_rb"
-----
-----/>
<RadioButton
android:id="@+id/ahm_wo_rb"
-----
-----/>
</RadioGroup>
</RelativeLayout>
现要在代码中设置 viewpager位于ahm_radiogroup之上(android:layout_above="@+id/ahm_radiogroup")
RelativeLayout.LayoutParams rl = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT,
RelativeLayout.LayoutParams.MATCH_PARENT);
rl.addRule(RelativeLayout.ABOVE, R.id.ahm_radiogroup);
ahm_viewpager.setLayoutParams(rl);
现要在代码中设置 viewpager不位于ahm_radiogroup之上(还原到布局xml)
RelativeLayout.LayoutParams rl = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT,
RelativeLayout.LayoutParams.MATCH_PARENT);
rl.addRule(RelativeLayout.BELOW,R.id.ahm_top_relative);//viewpager位于ahm_top_relative之下
rl.addRule(RelativeLayout.ABOVE, 0);//清除刚才设置的(位于ahm_radiogroup之上)
am_viewpager.setLayoutParams(rla);