Android中动态修改屏幕的背景色

代码中通过findViewById()获得Layout可以设置Orientation,但设置背景色无效

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通过如下代码也可以修改背景色:

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LayoutInflater layoutInflater = (LayoutInflater) getSystemService(Activity.LAYOUT_INFLATER_SERVICE);

LinearLayout linearLay = (LinearLayout) layoutInflater.inflate(R.layout.togglebutton, null) ;

linearLay.setBackgroundColor(Color.WHITE);

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setContentView(linearLay);

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但来回切换仍然不行.

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不通过布局对象，直接修改window的背景属性

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主要的代码如下：

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ToggleButton tb=(ToggleButton)findViewById(R.id.toggle);
??????? tb.setOnCheckedChangeListener(new OnCheckedChangeListener() {
??? ??? ??? public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
??? ??? ??? ??? ?Resources res = getResources();

??? ??? ??? ??? if(isChecked){
??? ??? ??? ??? ??? Drawable drawable = res.getDrawable(R.drawable.bgwhite);
??? ??? ??? ??? ??? ToggleActivity.this.getWindow().setBackgroundDrawable(drawable);
??? ??? ??? ??? }
??? ??? ??? ??? else{
??? ??? ??? ??? ??? Drawable drawable = res.getDrawable(R.drawable.bgblack);
??? ??? ??? ??? ??? ToggleActivity.this.getWindow().setBackgroundDrawable(drawable);
??? ??? ??? ??? }
??? ??? ??? ??
??? ??? });