大约有 40,000 项符合查询结果(耗时:0.0555秒) [XML]

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Media Player called in state 0, error (-38,0)

... You need to call mediaPlayer.start() in the onPrepared method by using a listener. You are getting this error because you are calling mediaPlayer.start() before it has reached the prepared state. Here is how you can do it : mp.setDataSo...
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How to detect the currently pressed key?

...thing, you haven't answered the question properly. The OP is asking about all keys and used the Shift key as an example only. So how do you detect other keys such as A to Z, 0 to 9 etc. – Ash Dec 18 '09 at 10:03 ...
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Removing transforms in SVG files

...ditor Find "transform" attributes in layers and delete them How to move all objects altogether without creating another transform attributes Go to Edit -> Select All in All Layers Go to Object -> Transform In Transform panel Uncheck Relative move and check Apply to each object separately...
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How do I pass a class as a parameter in Java?

... public void callingMethod(Class neededClass) { //Cast the class to the class you need //and call your method in the class ((ClassBeingCalled)neededClass).methodOfClass(); } To call the method, you call it this way: callingM...
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What does the PHP error message “Notice: Use of undefined constant” mean?

...l_escape_string($_POST['message']); As is, it was looking for constants called department, name, email, message, etc. When it doesn't find such a constant, PHP (bizarrely) interprets it as a string ('department', etc). Obviously, this can easily break if you do defined such a constant later (tho...
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What is the pythonic way to avoid default parameters that are empty lists?

...he preferred way in this example is to say: if working_list is None . The caller might have used an empty list-like object with a custom append. – tzot Dec 14 '08 at 12:45 5 ...
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How do I do a not equal in Django queryset filtering?

... Your query appears to have a double negative, you want to exclude all rows where x is not 5, so in other words you want to include all rows where x IS 5. I believe this will do the trick. results = Model.objects.filter(x=5).exclude(a=true) To answer your specific question, there is no "...
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Difference between dispatch_async and dispatch_sync on serial queue?

... I do mean serial execution. In point of view that all tasks are executed serial regards to other tasks in the same queue. Of cause it still can be concurrent regards to other queues. It is the whole point of GCD that tasks can be dispatched and executed concurrently. ...
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Precise Financial Calculation in JavaScript. What Are the Gotchas?

...avoid when using JavaScript to do this type of math—if it is possible at all! 7 Answers ...
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Clear icon inside input text

.... jQ will add the class x (if input has value) showing the clear icon. Now all we need is to target with jQ the inputs with class x and detect on mousemove if the mouse is inside that 18px "x" area; if inside, add the class onX. Clicking the onX class removes all classes, resets the input value and ...