android – 如何从代码中更改LinearLayout的大小

概述我有LinearLayot和LinearLayout,TableLayout和TableRow.当我点击按钮时,A有更改大小.当我这样做时： @Override public void onClick(View v) { private LinearLayout commonCardContainer = (LinearLayout) findViewByI 我有linearLayot和linearLayout,tableLayout和tableRow.当我点击按钮时,A有更改大小.当我这样做时：

@OverrIDe        public voID onClick(VIEw v) {            private linearLayout commonCardContainer = (linearLayout) findVIEwByID(R.ID.commonCardContainer);            VIEwGroup.LayoutParams params = commonCardContainer.getLayoutParams();            params.wIDth = 50;            params.height = 50;            commonCardContainer.setLayoutParams(new VIEwGroup.LayoutParams(params));     }

我有错误：

05-21 15:22:31.084: E/AndroIDRuntime(9272): FATAL EXCEPTION: main05-21 15:22:31.084: E/AndroIDRuntime(9272): java.lang.classCastException: androID.vIEw.VIEwGroup$LayoutParams cannot be cast to androID.Widget.relativeLayout$LayoutParams05-21 15:22:31.084: E/AndroIDRuntime(9272):     at androID.Widget.relativeLayout$DependencyGraph.findRoots(relativeLayout.java:1317)05-21 15:22:31.084: E/AndroIDRuntime(9272):     at androID.Widget.relativeLayout$DependencyGraph.getSortedVIEws(relativeLayout.java:1264)05-21 15:22:31.084: E/AndroIDRuntime(9272):     at androID.Widget.relativeLayout.sortChildren(relativeLayout.java:292)05-21 15:22:31.084: E/AndroIDRuntime(9272):     at androID.Widget.relativeLayout.onMeasure(relativeLayout.java:314)05-21 15:22:31.084: E/AndroIDRuntime(9272):     at androID.vIEw.VIEw.measure(VIEw.java:12948)05-21 15:22:31.084: E/AndroIDRuntime(9272):     at androID.vIEw.VIEwGroup.measureChilDWithmargins(VIEwGroup.java:5005)05-21 15:22:31.084: E/AndroIDRuntime(9272):     at androID.Widget.FrameLayout.onMeasure(FrameLayout.java:293)05-21 15:22:31.084: E/AndroIDRuntime(9272):     at androID.vIEw.VIEw.measure(VIEw.java:12948)05-21 15:22:31.084: E/AndroIDRuntime(9272):     at androID.vIEw.VIEwGroup.measureChilDWithmargins(VIEwGroup.java:5005)05-21 15:22:31.084: E/AndroIDRuntime(9272):     at androID.Widget.linearLayout.measureChildBeforeLayout(linearLayout.java:1369)05-21 15:22:31.084: E/AndroIDRuntime(9272):     at androID.Widget.linearLayout.measureVertical(linearLayout.java:660)05-21 15:22:31.084: E/AndroIDRuntime(9272):     at androID.Widget.linearLayout.onMeasure(linearLayout.java:553)05-21 15:22:31.084: E/AndroIDRuntime(9272):     at androID.vIEw.VIEw.measure(VIEw.java:12948)05-21 15:22:31.084: E/AndroIDRuntime(9272):     at androID.vIEw.VIEwGroup.measureChilDWithmargins(VIEwGroup.java:5005)05-21 15:22:31.084: E/AndroIDRuntime(9272):     at androID.Widget.FrameLayout.onMeasure(FrameLayout.java:293)...

如何解决？

解决方法 试试这个,

@OverrIDe    public voID onClick(VIEw v) {        private linearLayout commonCardContainer = (linearLayout) findVIEwByID(R.ID.commonCardContainer);        linearLayout.LayoutParams params = commonCardContainer.getLayoutParams();        params.wIDth = 50;        params.height = 50;        commonCardContainer.setLayoutParams(params); }

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