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UIWebView中加载HTML的Table,td设置百分比宽度并且宽度不被里面的内容撑开

2016-12-06 11:40 741 查看

正常情况下,iOS使用WebView加载HTML的Table时,为了让Table适应屏幕宽度,会使用百分比设置td的宽度,但是由于td中的内容过多,td会被撑开,导致整个Table的宽度会变宽,超出屏幕的宽度。

普通情况下可以设置scalesPageToFit＝YES并且td的宽度按百分比设置下就行。实例如下：

1.创建WebView

{//创建WebView
CGFloat webX = 0;
CGFloat webY = offset_y;
CGFloat webW = kAllWidth;
CGFloat webH = kAllHeight - webY;

self.webView = [[UIWebView alloc] initWithFrame:CGRectMake(webX, webY, webW, webH)];
self.webView.opaque = NO;
self.webView.backgroundColor = [UIColor whiteColor];
self.webView.scalesPageToFit = YES;
self.webView.delegate = self;
self.webView.tag = webViewTag + 2;
[vContainer addSubview:self.webView];
}

2.加载HTML

- (void)loadWebData{

NSString *urlText = [self createURLString];
[self.webView loadHTMLString:urlText baseURL:nil];

}

- (NSString *)createURLString{

NSMutableString *urlString = [[NSMutableString alloc] initWithString:@"<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">\n"];
[urlString appendString:@"<html xmlns=\"http://www.w3.org/1999/xhtml\">\n"];
[urlString appendString:@"<head>\n"];
[urlString appendString:@"<meta http-equiv=\"content-type\" content=\"text/html;charset=utf-8\">\n"];

[urlString appendString:@"<style type=\"text/css\">\n\
*{margin:0;padding:0;}\n\
table{cellSpacing:0;cellPadding:0;border-collapse:collapse;}\n\
table th,table td{ border:1px solid #ccc;align:center;text-align:center;}\n\
.table-head{background-color:#d31145;color:#fff;}\n\
.table-body{width:100%;height:100%;}\n\
.table-head table,.table-body table{width:100%;}\n\
.table-body table tr:nth-child(2n+1){background-color:#e2e2e2;}\n\
</style>\n"];

[urlString appendString:@"</head>\n"];
[urlString appendString:@"<title></title>\n"];
[urlString appendString:@"<body style=\"width:100%\" width=\"100%\" height=\"100%\">\n"];

if (self.dataSource.count!=0) {
//[urlString appendString:@"<div class=\"table-body\">\n"];
[urlString appendString:@"<table class=\"table-body\" id=\"content_table\" style=\"width:100%;\" cellSpacing＝\"0px\";cellPadding＝\"0px\";>\n"];
//初始化表格的行
for (int i=0; i<self.dataSource.count; i++) {
[urlString appendString:@"<tr style=\"font-size:22px;\" onclick=\"clickRow(this);\">\n"];
ThSalesOrderModel *model = [self.dataSource objectAtIndex:i];

for (int i=0; i<6; i++) {
if (i == 0) {
[urlString appendString:[NSString stringWithFormat:@"<td width=\"25%%\" style=\"padding:5px\">%@</td>\n",model.OrderDate]];
}
if (i == 1) {
[urlString appendString:[NSString stringWithFormat:@"<td width=\"25%%\" style=\"padding:5px\">%@</td>\n",model.deliverdate]];
}
if (i == 2) {
[urlString appendString:[NSString stringWithFormat:@"<td width=\"16.6%%\" style=\"padding:5px\">%@</td>\n",model.CustomerName]];
}
if (i == 3) {
[urlString appendString:[NSString stringWithFormat:@"<td width=\"16.6%%\" style=\"padding:5px\">%@</td>\n",model.SalesOrder]];
}
if (i == 4) {
[urlString appendString:[NSString stringWithFormat:@"<td width=\"16.6%%\" style=\"padding:5px\">%@</td>\n",model.Status]];
}

//actualCaseCount += [model.actqty doubleValue];
//targetCaseCount += [model.target doubleValue];
}
[urlString appendString:@"</tr>\n"];
}
[urlString appendString:@"</table>\n"];
[urlString appendString:@"</div>\n"];
}else{
[urlString appendString:@"<div\">\n"];
[urlString  appendFormat:@"<span style=\"font-size:25px;display:block;text-align:center;margin-top:40px;color:#bbb;\">%@</sapn>",kTXT(@"NoData")];
//[urlString appendString:@"</div>\n"];
}

[urlString appendString:@"</body>\n"];
[urlString appendString:@"</html>\n"];
[urlString appendString:@"\
<script type=\"text/javascript\">\n\
function clickRow (obj) {\n\
var salesOrder = obj.childNodes[7].innerText;\n\
var msg = \"push://\"+salesOrder;\n\
//alert(msg);\n\
loadURL(msg);\n\
}\n\
function loadURL (url) {\n\
var iFrame;\n\
iFrame = document.createElement(\"iFrame\");\n\
iFrame.setAttribute(\"src\",url);\n\
iFrame.setAttribute(\"style\",\"display:none\");\n\
iFrame.setAttribute(\"height\",\"0px\");\n\
iFrame.setAttribute(\"width\",\"0px\");\n\
iFrame.setAttribute(\"frameborder\",\"0\");\n\
document.body.appendChild(iFrame);\n\
//移除iFrame\n\
iFrame.parentNode.removeChild(iFrame);\n\
iFrame = null;\n\
}\n\
</script>\n\
"];
NSLog(@"生成的HTML字符串是:%@",urlString);

return urlString;
}

3.效果截图。（下图中的表格头部和表格内容是两个WebView分别加载两个HTML,然后相同列的比例设置相同就可以对齐了。同时表格内容向上滚动的时候，表头不会消失,类似于TableView的Header悬停效果）

但是以上方法并不适用于所有的情况，当td中的内容太多的时候，表格就会乱掉。

这个表格和上面的表格的构造基本相同，表头和内容分别使用两个WebView进行加载两个HTML的Table，然后td的宽度设置成百分比，结果并不像我们想的那样美好，表格的内容错乱了。。。

经过仔细的思考，我认为是泰国人的名字太长，换行的方式是按整个单词换行，我们可以修改下换行的方式。修改后的代码：（修改的部分我加了深灰的背景）

- (void)loadWebData{
[SVProgressHUD showWithStatus:kTXT(@"IMLoading")];
NSString *urlText = [self createURLString];
[self.webView loadHTMLString:urlText baseURL:nil];
//刷新底部的Table
//[self loadBottomData];

}

- (NSString *)createURLString{

NSMutableString *urlString = [[NSMutableString alloc] initWithString:@"<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">\n"];
[urlString appendString:@"<html xmlns=\"http://www.w3.org/1999/xhtml\">\n"];
[urlString appendString:@"<head>\n"];
[urlString appendString:@"<meta http-equiv=\"content-type\" content=\"text/html;charset=utf-8\">\n"];
/*
[urlString appendString:@"<style type=\"text/css\">\
*{margin:0;padding:0;}\
table{cellSpacing:0;cellPadding:0;border-collapse:collapse;}\
table th,table td{ border:1px solid #ccc;align:center;text-align:center;}\
.table-head{background-color:#d31145;color:#fff;}\
.table-body{width:100%;height:1200px;overflow-y:scroll;}\
.table-head table,.table-body table{width:100%;}\
.table-body table tr:nth-child(2n+1){background-color:#e2e2e2;}\
</style>"];
*/

//if (kGlobal.isIPhone6) {
[urlString appendString:@"<style type=\"text/css\">\n\
*{margin:0;padding:0;}\n\
table{cellSpacing:0;cellPadding:0;border-collapse:collapse;}\n\
table th,table td{ border:1px solid #ccc;align:center;text-align:center;}\n\
.table-head{background-color:#d31145;color:#fff;}\n\
.table-body{width:100%;height:100%;overflow-y:scroll;}\n\
.table-head table,.table-body table{width:100%;}\n\
.table-body table tr:nth-child(2n+1){background-color:#e2e2e2;}\n\
</style>\n"];

[urlString appendString:@"</head>\n"];
[urlString appendString:@"<title></title>\n"];
[urlString appendString:@"<body style=\"width:100%;max-width:100%;overflow:hidden;\" width=\"100%\" height=\"100%\">\n"];

if (self.targetDataSource.count!=0) {
[urlString appendString:@"<table style=\"width:100%;max-width:100%;table-layout:fixed;word-break:break-all;\" cellSpacing＝\"0px\";cellPadding＝\"0px\";>\n"];

self.actualCaseCount = 0;
self.targetCaseCount = 0;

//初始化表格的行
for (int j=0; j<self.targetDataSource.count; j++) {
[urlString appendString:@"<tr style=\"font-size:22px;width:100%;\">\n"];
ThCustomerTargetModel *model = [self.targetDataSource objectAtIndex:j];

for (int i=0; i<6; i++) {
if (i == 0) {
[urlString appendString:[NSString stringWithFormat:@"<td width=\"20%%\" style=\"padding:5px\">%@(%@)</td>\n",model.CustomerName,model.CustomerID]];
}
if (i == 1) {
[urlString appendString:[NSString stringWithFormat:@"<td width=\"20%%\" style=\"\">%@</td>\n",model.YearAndMonth]];
}
if (i == 2) {
[urlString appendString:[NSString stringWithFormat:@"<td width=\"20%%\" style=\"\">%@</td>\n",model.LastYearActualCase]];
}
if (i == 3) {
[urlString appendString:[NSString stringWithFormat:@"<td width=\"20%%\" style=\"padding:0px;font-size:22px;\" onclick=\"textOutClick(this);\"><input type=\"text\" style=\"padding:0px;margin:0px;width:95%%;height:60px;font-size:22px;\" onclick=\"textOnFocus(this)\" value=\"%@\" /></td>\n",model.ThisYearTargetCase]];
}
if (i == 4) {
//if ([model.ThisYearTargetCase isEqualToString:@""]||(model.ThisYearTargetCase == nil)) {
[urlString appendString:@"<td width=\"20%\" name=\"checkCell\" style=\"font-size:22px;\" onclick=\"checkOneCell(this);\"><input type=\"checkbox\" onclick=\"checkOneBox(this);\"></td>\n"];
//}
}
}
[urlString appendString:@"</tr>\n"];
}

[urlString appendString:@"</table>\n"];
}else{
self.actualCaseCount = 0;
self.targetCaseCount = 0;

[urlString  appendFormat:@"<span style=\"font-size:25px;display:block;text-align:center;margin-top:40px;color:#bbb;\">%@</sapn>",kTXT(@"NoData")];
}

[urlString appendString:@"</body>\n"];
[urlString appendString:@"</html>\n"];
[urlString appendFormat:@"<script type=\"text/javascript\">"];
[urlString appendFormat:@"\n\
function selectedAll(){\n\
var items = document.getElementsByName(\"checkCell\");\n\
for (var i = 0; i < items.length; i++) {\n\
items[i].firstChild.checked = true;\n\
}\n\
}\n\
function deselectedAll(){\n\
var items = document.getElementsByName(\"checkCell\");\n\
for (var i = 0; i < items.length; i++) {\n\
items[i].firstChild.checked = false;\n\
}\n\
}\n\
//选中一个td,弹出的信息提示格式:row_index_Selected\n\
function checkOneCell(obj){\n\
var totalCheckbox = obj.firstChild;\n\
var msg = \"thpush://row_\";\n\
if (totalCheckbox.checked) {\n\
totalCheckbox.checked = false;\n\
msg += obj.parentNode.rowIndex+\"_0\";\n\
}else{\n\
totalCheckbox.checked = true;\n\
msg += obj.parentNode.rowIndex+\"_1\";\n\
}\n\
//alert(msg);\n\
loadURL(msg);\n\
}\n\
function checkOneBox(e){\n\
var superNode = e.parentNode;\n\
if (e.checked == true) {\n\
e.checked = false;\n\
}else{\n\
e.checked = true;\n\
}\n\
var e = window.event || e;\n\
e.cancelBubble = true;\n\
//手动传播事件\n\
checkOneCell(superNode);\n\
}\n\
function loadURL (url) {\n\
var iFrame;\n\
iFrame = document.createElement(\"iFrame\");\n\
iFrame.setAttribute(\"src\",url);\n\
iFrame.setAttribute(\"style\",\"display:none\");\n\
iFrame.setAttribute(\"height\",\"0px\");\n\
iFrame.setAttribute(\"width\",\"0px\");\n\
iFrame.setAttribute(\"frameborder\",\"0\");\n\
document.body.appendChild(iFrame);\n\
//移除iFrame\n\
iFrame.parentNode.removeChild(iFrame);\n\
iFrame = null;\n\
}\n\
//点击<td>触发的方法\n\
function textOutClick(obj){\n\
//获得里面text的值\n\
var text = obj.childNodes[0].value;\n\
var msg = \"thpushone://\";\n\
msg += \"text_\"+text+\"_row_\"+obj.parentNode.rowIndex;\n\
//alert(msg);\n\
loadURL(msg);\n\
}\n\
//点击<text>触发的方法\n\
function textOnFocus(obj){\n\
var superNode = obj.parentNode;\n\
var e = window.event || obj;\n\
e.cancelBubble = true;\n\
//手动传播事件\n\
textOutClick(superNode);\n\
}\n\
"];

[urlString appendFormat:@"</script>"];

//NSLog(@"生成的HTML字符串是:%@",urlString);

return urlString;
}

最后显示的结果如下：

最后注明一个小知识：

如何设置WebView的高度，让WebView适应加载内容的高度，达到加载内容多高，WebView就是多高的一个效果？

方法是：在WebView的webViewDidFinishLoad代理方法中去设置WebView的高度。

- (void)webViewDidFinishLoad:(UIWebView *)webView{

NSUInteger tag = webView.tag - webViewTag;

if (tag == 1) {
CGRect frame = webView.frame;
frame.size.width = kAllWidth;
frame.size.height = 1;
webView.frame = frame;
frame.size.height = webView.scrollView.contentSize.height;
webView.frame = frame;
webView.scrollView.scrollEnabled = NO;
}
｝

p.p1 { margin: 0.0px 0.0px 0.0px 0.0px; font: 18.0px Menlo; color: #703daa }
span.s1 { }

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