android編程中setLayoutParams方法設定

標籤：

第一篇

private LinearLayout generateHeadOfControl() {LinearLayout LayoutHead = createLayout(LinearLayout.HORIZONTAL);    Button DateButton = generateDateButton();    Button ItemButton = generateItemButton();        DateButton.setLayoutParams(new LinearLayout.LayoutParams(100,                LinearLayout.LayoutParams.WRAP_CONTENT));        ItemButton .setLayoutParams(new LinearLayout.LayoutParams(100,                LinearLayout.LayoutParams.WRAP_CONTENT));        layoutHead.addView(DateButton);        layoutHead.addView(ItemButton);         return layoutHead;}==========================注意在LinearLayout裡設定params用的是ViewGroup的LayoutParams，會出錯，上面的代碼OK了~

第二篇

textView.setLayoutParams(new TextSwitcher.LayoutParams( 
                LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT)); 

為什麼要用TextSwitcher的LayoutParams呢。查一查API，可以看到這麼一句話These supply parameters to the parent of this view specifying how it should be arranged。也就是說一定要用父控制項的LayoutParams。如果父控制項是LinearLayout，當然就必須寫成LinearLayout.LayoutParams

android編程中setLayoutParams方法設定