[英]Adjusting height of linear layout programmatically
每當我嘗試設置LinearLayout的高度時,總是會遇到以下異常:
java.lang.ClassCastException: android.widget.LinearLayout$LayoutParams cannot be cast to android.widget.RelativeLayout$LayoutParams
這是我的代碼:
LinearLayout.LayoutParams hide = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, 0);
LinearLayout.LayoutParams show = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, 100);
driverMainOptions.setLayoutParams(hide);
mapDirections.setLayoutParams(show);
我需要一個特定的導入語句才能使其正確執行嗎?
這應該工作
LinearLayout lLayout = new LineaLayout(context);
LayoutParams params = lLayout.getLayoutParams();
params.height = 200;
params.width = 200;
lLayout.setLayoutParams(params);
在Android上查看可接受的答案:如何以編程方式設置布局的大小
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