android fill_parent和match_parent 的區別

兩個參數意思一樣

 

match_parent到底是什麼類型呢? 其實從Android 2.2開始FILL_PARENT改名為MATCH_PARENT ，從 API Level為8開始我們可以直接用MATCH_PARENT來代替FILL_PARENT，，他們的定義本質是一樣均為 -1，只是換了個別名，可能為了更準確些，比如最終在SDK中的定義為:    android.view.ViewGroup裡的靜態嵌套類LayoutParams中的代碼： fill_parent   -1 The view should be as big as its parent (minus padding). This constant is deprecated starting from API Level 8 and is replaced by match_parent. 
match_parent   -1 The view should be as big as its parent (minus padding). Introduced in API Level 8. 
wrap_content -2 The view should be only big enough to enclose its content (plus padding).