动态设置控件大小

LinearLayout.LayoutParams linearParams = (LinearLayout.LayoutParams) text
				.getLayoutParams();
		DisplayMetrics dm = new DisplayMetrics();
		activity.getWindowManager().getDefaultDisplay().getMetrics(dm);
		linearParams.width = dm.widthPixels;
linearParams.width = dm.heightPixels;
		text.setLayoutParams(linearParams);