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App Inventor 2 TaifunImage 拓展，图像高级处理功能，剪裁，压缩，翻转等 ...
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.aix 拓展下载：
com.puravidaapps.TaifunImage.aix
demo程序下载：
下载Resize测试项目(aia文件)
下载Create Chunks测试项目(aia文件)
下载Crop测试项目(aia文件)
下载Rotate测试项目(aia文件)
下载Scale & Overlay测试项目...
jQuery: count number of rows in a table
...vely...
var rowCount = $('table#myTable tr:last').index() + 1;
jsFiddle DEMO
This will ensure that any nested table-rows are not also counted.
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Android Json and null values
..."bye","callback string");
or
json.optString("bye");
instead.
In your demo code, the
JSONObject json = new JSONObject("{\"hello\":null}");
json.getString("hello");
this you get is String "null" not null.
your shoud use
if(json.isNull("hello")) {
helloStr = null;
} else {
helloStr...
Can a div have multiple classes (Twitter Bootstrap) [duplicate]
...pdown">Success <span class="caret"></span></button>
demo: http://jsfiddle.net/wNfcg/
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Any free WPF themes? [closed]
...d the source code (currently there is no binary release) and check out the demo that comes with it to get an idea of the capabilities.
You will need to install the WPF toolkit in order to compile and use the themes.
This is an ongoing project, so I think more themes will be added in the future. It...
Android: how to hide ActionBar on certain activities
I've developed a simple demo application with a splash screen a map and some regular screens.
16 Answers
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jQuery counting elements by class - what is the best way to implement this?
...ipt:
var numItems = $('.class').length;
alert(numItems);
Fiddle demo for inside only div
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jQuery if checkbox is checked
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color: blue;
}
<meta charset="utf-8">
<title>attr demo</title>
<script src="https://code.jquery.com/jquery-1.10.2.js"></script>
</head>
<body>
<input id="check1" type="checkbox" checked="checked">
<label for="check1">Check ...
Android Camera Preview Stretched
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I'm using this method -> based on API Demos to get my Preview Size:
private Camera.Size getOptimalPreviewSize(List<Camera.Size> sizes, int w, int h) {
final double ASPECT_TOLERANCE = 0.1;
double targetRatio=(double)h / w;
if (sizes...
how to show alternate image if source image is not found? (onerror working in IE but not in mozilla)
...th firefox it works well for a long time (since the post). Do you have any demo where it doesn't and where we could look at it.
– Etdashou
Aug 7 '14 at 13:24
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