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android get all contacts
How can I get all the names of the contacts in my Android and put them into array of strings?
8 Answers
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EntityType has no key defined error
...ifferent things can cause this error. In my case, I mistakenly marked my "Id" field "private" instead of "public" (a habit from Java/JPA). Larry Raymond's response below is arguably the "best" reply to this question. It lists most of the common scenarios behind "EntityType has no key defined erro...
jQuery Data vs Attr?
...OM element from the server, you should set the data on the element:
<a id="foo" data-foo="bar" href="#">foo!</a>
The data can then be accessed using .data() in jQuery:
console.log( $('#foo').data('foo') );
//outputs "bar"
However when you store data on a DOM node in jQuery using da...
Database development mistakes made by application developers [closed]
...te or technical primary keys are those that have absolutely no meaning outside the system. They are invented purely for identifying the entity and are typically auto-incrementing fields (SQL Server, MySQL, others) or sequences (most notably Oracle).
In my opinion you should always use surrogate ke...
Align DIV's to bottom or baseline
... flex-end; flex-direction: column on the parent div (demonstrated in this fiddle as well):
#parentDiv
{
display: flex;
justify-content: flex-end;
flex-direction: column;
width:300px;
height:300px;
background-color:#ccc;
background-repeat:repeat
}
...
Android YouTube app Play Video Intent
I have created a app where you can download YouTube videos for android. Now, I want it so that if you play a video in the YouTube native app you can download it too. To do this, I need to know the Intent that the YouTube native app puts out in order to play the YouTube app.
I could do this easiall...
android.widget.Switch - on/off event listener?
I would like to implement a switch button, android.widget.Switch (available from API v.14).
10 Answers
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Can I Set “android:layout_below” at Runtime Programmatically?
...when creating a RelativeLayout at runtime to set the equivalent of android:layout_below programmatically?
4 Answers
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Why this line xmlns:android=“http://schemas.android.com/apk/res/android” must be the first in the la
..., xmlns declares a Namespace. In fact, when you do:
<LinearLayout android:id>
</LinearLayout>
Instead of calling android:id, the xml will use http://schemas.android.com/apk/res/android:id to be unique. Generally this page doesn't exist (it's a URI, not a URL), but sometimes it is a UR...
How to delete a record in Django models?
...re are a couple of ways:
To delete it directly:
SomeModel.objects.filter(id=id).delete()
To delete it from an instance:
instance = SomeModel.objects.get(id=id)
instance.delete()
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