在android开发中如何实现多张图片的循环显示
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参考技术A loading.xml<animation-list xmlns:android="http://schemas.android.com/apk/res/android">
<item android:duration="150" android:drawable="@drawable/loading_01" />
<item android:duration="150" android:drawable="@drawable/loading_02" />
<item android:duration="150" android:drawable="@drawable/loading_03" />
<item android:duration="150" android:drawable="@drawable/loading_04" />
<item android:duration="150" android:drawable="@drawable/loading_05" />
<item android:duration="150" android:drawable="@drawable/loading_06" />
<item android:duration="150" android:drawable="@drawable/loading_07" />
</animation-list>
<ProgressBar
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:indeterminate="false"
android:indeterminateDrawable="@anim/loading" />追问
谢了,我找到答案了
在这种情况下如何将多张图片上传到远程服务器?循环或重复上传过程?
【中文标题】在这种情况下如何将多张图片上传到远程服务器?循环或重复上传过程?【英文标题】:How do i upload multiple images to remote server in this circumstances?Looping or repeat upload procedure? 【发布时间】:2013-12-09 18:24:32 【问题描述】:我是php新手,正在做一个表单,它允许我上传几个文本字段然后上传3张图片,然后将图片上传到远程服务器,并将图片的名称保存到数据库中, 这样以后就可以拉出来显示了。 (ps忽略SQL注入问题,我只是还没有时间解决这个问题。谢谢)
目前我正在 localhost 上进行测试。 我的问题是我应该循环播放,还是应该只进行 3 次上传? 以下是我尝试过的。但是循环试验不是上传文件,它只是直接进入无效文件。另外我想在上传之前确保所有 3 个文件都是有效文件,我是否必须先循环验证然后再循环上传?
请给我一些建议,谢谢你的时间。
<?php
ini_set('display_errors', 1); error_reporting(E_ALL);
ob_start();
session_start();
include 'connect.php';
if ($_POST)
//get form data
$Listingname = addslashes(strip_tags($_POST['Listingname']));
$Location = addslashes(strip_tags($_POST['Location']));
$nobed = addslashes(strip_tags($_POST['nobed']));
$zip = addslashes(strip_tags($_POST['zip']));
$price = addslashes(strip_tags($_POST['price']));
$username=addslashes(strip_tags($_POST[$_SESSION['username']]));
if (!$Listingname||!$nobed||!$nobed||!$zip||!$price)
echo "Please fill out all fields";
else
for($i=0;$i<count($_FILES["image"]["name"]);$i++)
$allowedExts = array("gif", "jpeg", "jpg", "png");
$temp = explode(".", $_FILES["file"]["name"][$i]);
$extension = end($temp);
if ((($_FILES["file"]["type"] == "image/gif")
|| ($_FILES["file"]["type"] == "image/jpeg")
|| ($_FILES["file"]["type"] == "image/jpg")
|| ($_FILES["file"]["type"] == "image/pjpeg")
|| ($_FILES["file"]["type"] == "image/x-png")
|| ($_FILES["file"]["type"] == "image/png"))
&& ($_FILES["file"]["size"] < 400000)
&& in_array($extension, $allowedExts))
if ($_FILES["file"]["error"] > 0)
echo "Return Code: " . $_FILES["file"]["error"] . "<br>";
else
echo "Upload: " . $_FILES["file"]["name"][$i] . "<br>";
echo "Type: " . $_FILES["file"]["type"] . "<br>";
echo "Size: " . ($_FILES["file"]["size"] / 1024) . " kB<br>";
echo "Temp file: " . $_FILES["file"]["tmp_name"] . "<br>";
if (file_exists("upload/" . $_FILES["file"]["name"]))
echo $_FILES["file"]["name"][$i] . " already exists please add another file, or change the. ";
else
$photo=$_FILES["file"]["name"][$i];
move_uploaded_file($_FILES["file"]["tmp_name"],
"upload/$photo");
echo "Stored in: " . "upload/" . $_FILES["file"]["name"][$i];
else
echo "Invalid file";
$username=$_SESSION['username'];
//register into database
mysqli_query($con,"INSERT INTO Listing (username,Listingname,Location,nobed,zip,price,pic1) VALUES
('$username','$Listingname','$Location','$nobed','$zip','$price','$photo');") or die(mysqli_error());
echo "Listing Added";
else
?>
<form action="Submitlisting2.php" method="post"
enctype="multipart/form-data">
Listing Name:<br />
<input type='text' name='Listingname'><p />
Location:<br />
<input type='text' name='Location'><p />
Number of Beds:<br />
<input type='test' name='nobed'><p />
Zip:<br />
<input type='text' name='zip'><p />
Price:<br />
<input type='text' name='price'><p />
<label for="file">Pic1(File must be exceed 4mb):</label>
<input type="file" name="file[]" id="file"><br>
<label for="file">Pic2(File must be exceed 4mb):</label>
<input type="file" name="file[]" id="file"><br>
<br>
<input type='submit' name='submit' value='Submit'>
</form>
<?php
?>
尝试不循环(这会很长,尝试仅上传 2 张图片,这是我考虑循环的原因之一)
<?php
ini_set('display_errors', 1); error_reporting(E_ALL);
ob_start();
session_start();
include 'connect.php';
if ($_POST)
//get form data
$Listingname = addslashes(strip_tags($_POST['Listingname']));
$Location = addslashes(strip_tags($_POST['Location']));
$nobed = addslashes(strip_tags($_POST['nobed']));
$zip = addslashes(strip_tags($_POST['zip']));
$price = addslashes(strip_tags($_POST['price']));
$username=addslashes(strip_tags($_POST[$_SESSION['username']]));
if (!$Listingname||!$nobed||!$nobed||!$zip||!$price)
echo "Please fill out all fields";
else
$allowedExts = array("gif", "jpeg", "jpg", "png");
$temp = explode(".", $_FILES["file"]["name"]);
$extension = end($temp);
if ((($_FILES["file"]["type"] == "image/gif")
|| ($_FILES["file"]["type"] == "image/jpeg")
|| ($_FILES["file"]["type"] == "image/jpg")
|| ($_FILES["file"]["type"] == "image/pjpeg")
|| ($_FILES["file"]["type"] == "image/x-png")
|| ($_FILES["file"]["type"] == "image/png"))
&& ($_FILES["file"]["size"] < 400000)
&& in_array($extension, $allowedExts))
if ($_FILES["file"]["error"] > 0)
echo "Return Code: " . $_FILES["file"]["error"] . "<br>";
else
echo "Upload: " . $_FILES["file"]["name"] . "<br>";
echo "Type: " . $_FILES["file"]["type"] . "<br>";
echo "Size: " . ($_FILES["file"]["size"] / 1024) . " kB<br>";
echo "Temp file: " . $_FILES["file"]["tmp_name"] . "<br>";
if (file_exists("upload/" . $_FILES["file"]["name"]))
echo $_FILES["file"]["name"] . " already exists please add another file, or change the. ";
else
$allowedExts1 = array("gif", "jpeg", "jpg", "png");
$temp1 = explode(".", $_FILES1["file1"]["name1"]);
$extension1 = end($temp1);
if ((($_FILES1["file"]["type"] == "image/gif")
|| ($_FILES1["file"]["type"] == "image/jpeg")
|| ($_FILES1["file"]["type"] == "image/jpg")
|| ($_FILES1["file"]["type"] == "image/pjpeg")
|| ($_FILES1["file"]["type"] == "image/x-png")
|| ($_FILES1["file"]["type"] == "image/png"))
&& ($_FILES1["file"]["size"] < 400000)
&& in_array($extension1, $allowedExts1))
if ($_FILES1["file"]["error"] > 0)
echo "Return Code: " . $_FILES1["file"]["error"] . "<br>";
else
echo "Upload: " . $_FILES1["file"]["name"] . "<br>";
echo "Type: " . $_FILES1["file"]["type"] . "<br>";
echo "Size: " . ($_FILES1["file"]["size"] / 1024) . " kB<br>";
echo "Temp file: " . $_FILES1["file"]["tmp_name"] . "<br>";
if (file_exists("upload/" . $_FILES1["file"]["name"]))
echo $_FILES1["file"]["name"] . " already exists please add another file, or change the. ";
else
$photo=$_FILES["file"]["name"];
move_uploaded_file($_FILES["file"]["tmp_name"],
"upload/$photo");
echo "Stored in: " . "upload/" . $_FILES["file"]["name"];
else
echo "Pic 1 Invalid file" and die("Unable to upload pic1");
$photo1=$_FILES1["file"]["name"];
move_uploaded_file($_FILES1["file"]["tmp_name"],
"upload/$photo1");
echo "Stored in: " . "upload/" . $_FILES1["file"]["name"];
else
echo "Pic 2 Invalid file" and die("Unable to upload Pic2");
$username=$_SESSION['username'];
//register into database
mysqli_query($con,"INSERT INTO Listing (username,Listingname,Location,nobed,zip,price,pic1) VALUES
('$username','$Listingname','$Location','$nobed','$zip','$price','$photo');") or die(mysqli_error());
echo "Listing Added";
else
?>
<form action="Submitlisting2.php" method="post"
enctype="multipart/form-data">
Listing Name:<br />
<input type='text' name='Listingname'><p />
Location:<br />
<input type='text' name='Location'><p />
Number of Beds:<br />
<input type='test' name='nobed'><p />
Zip:<br />
<input type='text' name='zip'><p />
Price:<br />
<input type='text' name='price'><p />
<label for="file">Filename(File must be exceed 4mb):</label>
<input type="file" name="file" id="file"><br>
<label for="file">Filename(File must be exceed 4mb):</label>
<input type="file" name="file1" id="file1"><br>
<br>
<input type='submit' name='submit' value='Submit'>
</form>
<?php
?>
【问题讨论】:
【参考方案1】:如果我说的是更好的用户体验,那么循环比重复上传要好得多,对于重复上传,您可以/应该使用 ajax 上传。
【讨论】:
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