[Android] 判斷EditText輸入是否為空白

if ( "" .equals(XXX.getText().toString().trim())) .csharpcode, .csharpcode pre { font-size: small; color: black; font-family: consolas, "Courier New", courier, monospace; background-color: #ffffff; /*white-space: pre;*/ } .csharpcode pre { margin: 0em; } .csharpcode .rem { color: #008000; } .csharpcode .kwrd { color: #0000ff; } .csharpcode .str { color: #006080; } .csharpcode .op { color: #0000c0; } .csharpcode .preproc { color: #cc6633; } .csharpcode .asp { background-color: #ffff00; } .csharpcode .html { color: #800000; } .csharpcode .attr { color: #ff0000; } .csharpcode .alt { background-color: #f4f4f4; width: 100%; margin: 0em; } .csharpcode .lnum { color: #606060; }

"" => 空字串 equals => 是否與 括號 裡的物件 相等 edittext.gettext() => 取得 EditText 資料 .toString() => 轉型 成String trim() => 資料內容去除 空格後，剩下的資料

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Beneath this mask there is more than flesh. Beneath this mask there is an idea, and ideas are bulletproof.

[Android] 判斷EditText輸入是否為空白

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