首先設定EditText的回車屬性

drawable檔案

@drawable/editcolor

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle">
    <size android:width="2dp" />
    <solid android:color="@color/white"  />
</shape>

EditText屬性

<EditText
 
android:id="@+id/login_pasw"
android:layout_width="match_parent"
android:layout_height="20dp"
android:layout_marginLeft="6dp"
android:background="@null"
android:gravity="center_vertical"
android:hint="@string/inputpassword"
android:imeOptions="actionDone"//回車屬性為完成
android:textColor="@color/white"
android:textColorHint=
 
"@color/white"
android:textCursorDrawable="@drawable/editcolor"
android:textSize="16sp" />

activity完整程式碼

    @Override
public boolean dispatchKeyEvent(KeyEvent event) {
        //這裡注意要作判斷處理，ActionDown、ActionUp都會回撥到這裡，不作處理的話就會呼叫兩次
if (KeyEvent.KEYCODE_ENTER == event.getKeyCode() && KeyEvent.ACTION_DOWN 
 
== event.getAction()) {
            String name = login_name.getText().toString();
String passw = login_pasw.getText().toString();
            if (TextUtils.isEmpty(name)) {
//                    ToastUtil.showInfo(this, "請輸入使用者名稱", Toast.LENGTH_LONG);
Toast.makeText(this, "請輸入使用者名稱", Toast.LENGTH_SHORT).show();
                return false;
}
            if (TextUtils.isEmpty(passw)) {
//                    ToastUtil.showInfo(this, "請輸入密碼", Toast.LENGTH_LONG);
Toast.makeText(this, "請輸入密碼", Toast.LENGTH_SHORT).show();
                return false;
}
                logtest(name, passw);//登入方法
            //處理事件
return true;
}
        return super.dispatchKeyEvent(event);
}