android 动态设置View的高度和宽度

LinearLayout.LayoutParams linearParams =(LinearLayout.LayoutParams) TextView.getLayoutParams(); //取控件textView当前的布局参数

linearParams.width = 40;// 控件的宽强制设成30
linearParams.height =40;// 控件的高强制设成20

TextView.setLayoutParams(linearParams);

 

/**
 * 重设 view 的宽高
 */
public static void setViewLayoutParams(View view, int nWidth, int nHeight) {
    ViewGroup.LayoutParams lp = view.getLayoutParams();
    if (lp.height != nHeight || lp.width != nWidth) {
        lp.width = nWidth;
        lp.height = nHeight;
        view.setLayoutParams(lp);
    }
}

自动属性长度

ViewGroup.LayoutParams.WRAP_CONTENT

ViewGroup.LayoutParams.MATCH_PARENT

 控件的边距

RelativeLayout.LayoutParams linearParams2 =(RelativeLayout.LayoutParams) top2.getLayoutParams(); //取控件textView当前的布局参数
linearParams2.topMargin =450;// 控件的边距
top2.setLayoutParams(linearParams2);

 

动态设置列表高度

 

LinearLayout.LayoutParams linearParams =(LinearLayout.LayoutParams) activityOneRecyclerView.getLayoutParams(); //取控件textView当前的布局参数
linearParams.height = UIUtils.dip2px(98)*6;//98是item高度。6是item数量

工具方法：

/**
 * 将dip或dp值转换为px值，保证尺寸大小不变
 */
public static int dip2px(Context context, float dipValue) {
    final float scale = context.getResources().getDisplayMetrics().density;
    return (int) (dipValue * scale + 0.5f);
}