背景:
我使用public function add()
{
$data['HName'] = $this->input->post('HName');
$data['HDescription'] = $this->input->post('HDescription');
$data['Latitude'] = $this->input->post('Latitude');
$data['Longitude'] = $this->input->post('Longitude');
$data['CatagoryType'] = $this->input->post('CatagoryType');
$data['ParentID'] = $this->input->post('ParentID');
return $this->db->insert('hazara_tbl', $data);
}
public function getDisttforTehsil()
{
$query = $this->db->query('SELECT `HID`, `HName` FROM hazara_tbl WHERE `CatagoryType` = "District" ');
return $query->result();
}
创建了无限轮播。此轮播在 <div class="form-group">
<label id="lblCatType">Catagory Type</label>
<select class="form-control" name="CatagoryType" id="CatType">
<option value="None" selected="Selected">Select Catagory Type</option>
<option value="District">District</option>
<option value="Tehsil">Tehsil</option>
<option value="Union Council">Union Council</option>
<option value="Village">Village</option>
<option value="Hotel">Hotel</option>
<option value="Restaurant">Restaurant</option>
<option value="Medical Store">Medical Store</option>
<option value="Gov Dev Project">Gov Dev Project</option>
</select>
</div>
<script>
$(document).ready(function()
{
$("#lblDisttHotel, #disttHotel, #lblTehHotel, #tehHotel, #lblucHotel, #ucHotel, #lblVillageHotel, #villageHotel, #lblDisttNewUC, #disttNewUC, #tehNewUC, #lblTehNewUC, #lblDisttNew, #disttNew, #lblDistt, #distt, #lblTeh, #teh, #lblUC, #uc, #lblVillage, #village").hide();
$('#CatType').change(function()
{
if($(this).val() == 'Tehsil') // Tehsil selected
{
$("#lblDisttNew, #disttNew").show();
$("#lblDisttHotel, #disttHotel, #lblTehHotel, #tehHotel, #lblucHotel, #ucHotel, #lblVillageHotel, #villageHotel, #lblDisttNewUC, #disttNewUC, #tehNewUC, #lblTehNewUC, #lblDistt, #distt, #lblTeh, #teh, #lblUC, #uc, #lblVillage, #village").hide();
}
else if ($(this).val() == 'Village') // Village selected
{
$("#lblDistt, #distt").show();
$("#lblDisttHotel, #disttHotel, #lblTehHotel, #tehHotel, #lblucHotel, #ucHotel, #lblVillageHotel, #villageHotel, #lblDisttNewUC, #disttNewUC, #tehNewUC, #lblTehNewUC, #lblDisttNew, #disttNew, #lblTeh, #teh, #lblUC, #uc, #lblVillage, #village").hide();
}
});
$('#distt').change(function()
{
var myHID = $('#distt').val();
$.ajax(
{
url: 'http://localhost:83/ehazaratest/index.php/insert_data/getTehsilsForDistt',
data: {id: myHID},
type: "post",
success: function( msg )
{
var aa = JSON.parse(msg);
$("#teh, #lblTeh").show();
$('#teh').empty();
$.each(aa.query, function (key, value) {
$("#teh").append($('<option></option>').val(value.HID).html(value.HName));
})
}
})
}); // end of function
$('#teh').change(function()
{
var myVHID = $('#teh').val();
$.ajax(
{
url: 'http://localhost:83/ehazaratest/index.php/insert_data/getUCForTehsils',
data: {idV: myVHID},
type: "post",
success: function( msg )
{
var getData = JSON.parse(msg);
$("#uc, #lblUC").show();
$('#uc').empty();
$.each(getData.Vquery, function (key, value) {
$("#uc").append($('<option></option>').val(value.HID).html(value.HName));
})
}
})
}); // end of function
});
</script>
<!-- Select District for Village -->
<div class="form-group">
<label id="lblDistt">Select District for Village</label>
<select class="form-control" id="distt" name="" >
<?php foreach ($getDistt as $d ) { ?>
<option value="<?php echo $d->HID; ?>"> <?php echo $d->HName;?> </option>
<?php } ?>
</select>
</div>
<!-- Select Tehsil for Village-->
<div class="form-group">
<label id="lblTeh">Select Tehsil for Village</label>
<select class="form-control" id="teh" name="">
<option value="None" selected="Selected">Select Tehsil</option>
</select>
</div>
<!-- Select Union Council for Village -->
<div class="form-group">
<label id="lblUC">Select Union Council for Village</label>
<select class="form-control" name="ParentID" id="uc">
<option value="None" selected="Selected">Select Union Council</option>
</select>
</div>
和ViewPager
模式下的显示方式不同。旋转木马旋转方向是从右到左。
在纵向模式下,“轮播”仅显示一张图像。见下图。此处,Landscape
出现在屏幕上。黑色框架是屏幕显示区域。
其他图像不在屏幕显示中。
在横向模式下,Carousel将显示三张图像。见下图。这里,
Portrait
完全出现在屏幕上,而Image 3
的某些部分出现在屏幕上。
现在,Image 3
拥有自己的Image 2 and Image 4
。在这里,我有覆盖ViewPager.PageTransformer
函数。
对于ViewPager
,offScreenPageLimit的默认值为transformPage(View view, float position)
。我没有改变这个值。现在,在1
模式下,在显示Image-3时,ViewPager
将加载Image-2和Image-4。由于offScreenPageLimit值,它会调用Portrait
函数 三次 。
问题:
问题出在ViewPager
模式。在横向模式下,ViewPager将显示三个图像:transformPage()
。由于offScreenPageLimit值,它将加载Image-1和Image-5。因此,理想情况下,它应该为{strong> 五次 调用Landscape
函数。但是,它称之为 七次 。 WHY ??
我还观察到,调用Image-2, Image-3 and Image-4
函数七次的顺序始终相同。
顺序:调用Image-3,Image-2,Image-1,Image-5(transformPage()
),Image-4,Image-5,Image-1(transformPage()
)
为什么要调用CALL-A
和CALL-B
?因为这个逻辑写在CALL-A
中不能正常工作。
有人知道为什么会被称为 七次 ??