1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
|
package cgeo.geocaching.settings;
import org.eclipse.jdt.annotation.Nullable;
import android.content.Context;
import android.content.res.TypedArray;
import android.preference.Preference;
import android.util.AttributeSet;
/**
* Base class for preferences which evaluate their XML attributes for further processing.
*
*/
public abstract class AbstractAttributeBasedPrefence extends Preference {
public AbstractAttributeBasedPrefence(Context context) {
super(context);
}
public AbstractAttributeBasedPrefence(Context context, AttributeSet attrs) {
super(context, attrs);
processAttributes(context, attrs, 0);
}
public AbstractAttributeBasedPrefence(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
processAttributes(context, attrs, defStyle);
}
private void processAttributes(Context context, @Nullable AttributeSet attrs, int defStyle) {
if (attrs == null) {
return;
}
TypedArray types = context.obtainStyledAttributes(attrs, getAttributeNames(),
defStyle, 0);
processAttributeValues(types);
types.recycle();
}
/**
* Evaluate the attributes which where requested in {@link AbstractAttributeBasedPrefence#getAttributeNames()}.
*
* @param values
*/
protected abstract void processAttributeValues(TypedArray values);
/**
* @return the names of the attributes you want to read in your preference implementation
*/
protected abstract int[] getAttributeNames();
}
|