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How set background drawable programmatically in Android
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Another way to achieve it is to use the following:
final int sdk = android.os.Build.VERSION.SDK_INT;
if(sdk < android.os.Build.VERSION_CODES.JELLY_BEAN) {
layout.setBackgroundDrawable(ContextCompat.getDrawable(context, R.drawable.ready) );
} else {
layout.setBackground(ContextCompat.ge...
@UniqueConstraint annotation in Java
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@Entity
@Table(uniqueConstraints={@UniqueConstraint(columnNames = {"id_1" , "id_2"})})
public class class_name {
@Id
@GeneratedValue
public Long id;
@NotNull
public Long id_1;
@NotNull
public Long id_2;
}
Hope it helped.
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How to find out which view is focused?
I need to find out if any view is focused inside an Activity and what view it is. How to do this?
6 Answers
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Error handling in getJSON calls
...t it working w/ jQuery 1.3 and wondering why it was complaining about invalid method :-)
– kenyee
Dec 13 '11 at 22:01
24
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I need to securely store a username and password in Python, what are my options?
...ent, at boot-time or whatever, but this is a reasonable compromise that avoids having a plain-text password stored anywhere on disk.
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@UniqueConstraint and @Column(unique = true) in hibernate annotation
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As said before, @Column(unique = true) is a shortcut to UniqueConstraint when it is only a single field.
From the example you gave, there is a huge difference between both.
@Column(unique = true)
@ManyToOne(optional = false, fet...
How do I list all files of a directory?
...'work.txt', '3ebooks.txt', 'documents']
glob
I found glob easier to select the file of the same type or with something in common. Look at the following example:
import glob
txtfiles = []
for file in glob.glob("*.txt"):
txtfiles.append(file)
glob with list comprehension
import glo...
How to cast an object in Objective-C
...king out the cast and assignment into two lines.
– Guido Anselmi
Jun 3 '14 at 21:06
1
Typecasting...
What's the best way to set a single pixel in an HTML5 canvas?
...e a 1×1 image data, set the color, and putImageData at the location:
var id = myContext.createImageData(1,1); // only do this once per page
var d = id.data; // only do this once per page
d[0] = r;
d[1] = g;
d[2] = b;
d[3] = a;
myContext.putImageData( id, x, y ); ...
How can I write text on a HTML5 canvas element?
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var canvas = document.getElementById("my-canvas");
var context = canvas.getContext("2d");
context.fillStyle = "blue";
context.font = "bold 16px Arial";
context.fillText("Zibri", (canvas.width / 2) - 17, (canvas.height / 2) + 8);
#my-canvas {
backgro...