好吧,我對if-else statement
有點困惑。我在我的table layout
中有4行,並檢查每行是否有價值。if-else語句混淆
案例1
public void onClick(DialogInterface dialog, int ii)
{
if ((i != null && i.trim().length() > 0))
{
WD.insertWorkDetails(a1, W1, P1, b, c); //row 1
WD.insertWorkDetails(a2, W2, P2, d, e1); //row 2
WD.insertWorkDetails(a3, W3, P3, f, g); //row 3
WD.insertWorkDetails(a4, W4, P4, h, i); //row 4
ts.insertTimeSheet(name, weather, date, status, b, i);
WF.insertWorkForce(subContractors, noPeople, noHours);
Toast.makeText(getApplicationContext(), "4 Row has value", Toast.LENGTH_LONG).show();
}
else if (TextUtils.isEmpty(i) && (g != null && g.trim().length() > 0))
{
if ((TextUtils.isEmpty(W4)) && (TextUtils.isEmpty(P4)) && (TextUtils.isEmpty(h)) && (TextUtils.isEmpty(i)))
{
WD.insertWorkDetails(a1, W1, P1, b, c);
WD.insertWorkDetails(a2, W2, P2, d, e1);
WD.insertWorkDetails(a3, W3, P3, f, g);
ts.insertTimeSheet(name, weather, date, status, b, g);
WF.insertWorkForce(subContractors, noPeople, noHours);
Toast.makeText(getApplicationContext(), "Row 4 no value", Toast.LENGTH_LONG).show();
}
else
{
database = dbHelper.getWritableDatabase();
WD.insertWorkDetails(a1, W1, P1, b, c);
WD.insertWorkDetails(a2, W2, P2, d, e1);
WD.insertWorkDetails(a3, W3, P3, f, g);
WD.insertWorkDetails(a4, W4, P4, h, i);
ts.insertTimeSheet(name, weather, date, status, b, g);
WF.insertWorkForce(subContractors, noPeople, noHours);
Toast.makeText(getApplicationContext(), " All Row has value ",
Toast.LENGTH_LONG).show();
}
}
在案例1中,g!=null
和w4
持有價值,但我得到Row 4 no value
其假設返回All Row has value
。爲什麼?
案例2
else if (TextUtils.isEmpty(i) && (TextUtils.isEmpty(g) && (TextUtils.isEmpty(e1)) && (c != null && c.trim().length() > 0)))
{
if ((TextUtils.isEmpty(W4)) && (TextUtils.isEmpty(P4))
&& (TextUtils.isEmpty(h)) && (TextUtils.isEmpty(i))
&& ((TextUtils.isEmpty(W3)) && (TextUtils.isEmpty(P3))
&& (TextUtils.isEmpty(f)) && (TextUtils.isEmpty(g)))
&& ((TextUtils.isEmpty(W2)) && (TextUtils.isEmpty(P2))
&& (TextUtils.isEmpty(d)) && (TextUtils.isEmpty(e1))))
{
ts.insertTimeSheet(name, weather, date, status, b, c);
WF.insertWorkForce(subContractors, noPeople, noHours);
WD.insertWorkDetails(a1, W1, P1, b, c);
Toast.makeText(getApplicationContext(), "Row 1 has value only", Toast.LENGTH_LONG).show();
}
else if ((W4 != null && W4.trim().length() > 0))
{
WD.insertWorkDetails(a1, W1, P1, b, c);
WD.insertWorkDetails(a2, W2, P2, d, e1);
WD.insertWorkDetails(a3, W3, P3, f, g);
WD.insertWorkDetails(a4, W4, P4, h, i);
ts.insertTimeSheet(name, weather, date, status, c, b);
WF.insertWorkForce(subContractors, noPeople, noHours);
Toast.makeText(getApplicationContext(), "All row have value", Toast.LENGTH_LONG).show();
}
}
在案例2中,c and W4!=null
,但我得到row 1 has value only
。
沒問題,你錯過了一些右括號,我假設他們走的盡頭,但留下他們以防萬一。 – DoubleDouble
你是否在這個代碼中可見的地方使用了一個變量'i'?只是注意到這個方法使用'ii'不知道在移動代碼時這是否是編碼錯誤或錯字 - 'onClick(DialogInterface對話框,int ii)' - 可能是爲什麼'i'不是null,而是進入case 1中的第一個'if'語句 – DoubleDouble
@DoubleDouble我正在使用Alert Dialog..The ii和i不一樣:) – John