public
class
ItemViewTypeComposer
extends Object| java.lang.Object | |
| ↳ | com.h6ah4i.android.widget.advrecyclerview.adapter.ItemViewTypeComposer |
Class Overview
Utility class providing "Composed item view type" related definitions and methods.
Spec:
| bit 31 | Expandable group flag (1: expandable group / 0: normal item) |
|---|---|
| bit 30-24 | View type segment |
| bit 23-0 | Wrapped view type code |
Summary
| Constants | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| int | BIT_MASK_EXPANDABLE_FLAG | Bit mask of the expandable flag part. | |||||||||
| int | BIT_MASK_SEGMENT | Bit mask of the segment part. | |||||||||
| int | BIT_MASK_WRAPPED_VIEW_TYPE | Bit mask of the wrapped view type part. | |||||||||
| int | BIT_OFFSET_EXPANDABLE_FLAG | Bit offset of the expandable flag part. | |||||||||
| int | BIT_OFFSET_SEGMENT | Bit offset of the segment part. | |||||||||
| int | BIT_OFFSET_WRAPPED_VIEW_TYPE | Bit offset of the wrapped view type part. | |||||||||
| int | BIT_WIDTH_EXPANDABLE_FLAG | Bit width of the expandable flag part. | |||||||||
| int | BIT_WIDTH_SEGMENT | Bit width of the segment part. | |||||||||
| int | BIT_WIDTH_WRAPPED_VIEW_TYPE | Bit width of the wrapped view type part. | |||||||||
| int | MAX_SEGMENT | Maximum value of segment. | |||||||||
| int | MAX_WRAPPED_VIEW_TYPE | Maximum value of wrapped view type. | |||||||||
| int | MIN_SEGMENT | Minimum value of segment. | |||||||||
| int | MIN_WRAPPED_VIEW_TYPE | Minimum value of wrapped view type. | |||||||||
| Public Methods | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| static int |
composeSegment(int segment, int wrappedViewType)
Makes a composed ID with specified segment and wrapped ID.
| ||||||||||
| static int |
extractSegmentPart(int composedViewType)
Extracts "Segment" part from composed view type.
| ||||||||||
| static int |
extractWrappedViewTypePart(int composedViewType)
Extracts "Wrapped view type" part from composed view type.
| ||||||||||
| static boolean |
isExpandableGroup(int composedViewType)
Checks the composed view type is a expandable group or not.
| ||||||||||
|
[Expand]
Inherited Methods | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
From class
java.lang.Object
| |||||||||||
Constants
public static final int BIT_MASK_EXPANDABLE_FLAG
Bit mask of the expandable flag part.
Constant Value:
-2147483648
(0x80000000)
public static final int BIT_MASK_SEGMENT
Bit mask of the segment part.
Constant Value:
2130706432
(0x7f000000)
public static final int BIT_MASK_WRAPPED_VIEW_TYPE
Bit mask of the wrapped view type part.
Constant Value:
16777215
(0x00ffffff)
public static final int BIT_OFFSET_EXPANDABLE_FLAG
Bit offset of the expandable flag part.
Constant Value:
31
(0x0000001f)
public static final int BIT_OFFSET_SEGMENT
Bit offset of the segment part.
Constant Value:
24
(0x00000018)
public static final int BIT_OFFSET_WRAPPED_VIEW_TYPE
Bit offset of the wrapped view type part.
Constant Value:
0
(0x00000000)
public static final int BIT_WIDTH_EXPANDABLE_FLAG
Bit width of the expandable flag part.
Constant Value:
1
(0x00000001)
public static final int BIT_WIDTH_SEGMENT
Bit width of the segment part.
Constant Value:
7
(0x00000007)
public static final int BIT_WIDTH_WRAPPED_VIEW_TYPE
Bit width of the wrapped view type part.
Constant Value:
24
(0x00000018)
public static final int MAX_SEGMENT
Maximum value of segment.
Constant Value:
127
(0x0000007f)
public static final int MAX_WRAPPED_VIEW_TYPE
Maximum value of wrapped view type.
Constant Value:
8388607
(0x007fffff)
public static final int MIN_SEGMENT
Minimum value of segment.
Constant Value:
0
(0x00000000)
public static final int MIN_WRAPPED_VIEW_TYPE
Minimum value of wrapped view type.
Constant Value:
-8388608
(0xff800000)
Public Methods
public static int composeSegment (int segment, int wrappedViewType)
Makes a composed ID with specified segment and wrapped ID.
Parameters
| segment | Segment |
|---|---|
| wrappedViewType | Wrapped view type |
Returns
- Composed View type.
public static int extractSegmentPart (int composedViewType)
Extracts "Segment" part from composed view type.
Parameters
| composedViewType | Composed view type |
|---|
Returns
- Segment part
public static int extractWrappedViewTypePart (int composedViewType)
Extracts "Wrapped view type" part from composed view type.
Parameters
| composedViewType | Composed view type |
|---|
Returns
- Wrapped view type part
public static boolean isExpandableGroup (int composedViewType)
Checks the composed view type is a expandable group or not.
Parameters
| composedViewType | Composed view type |
|---|
Returns
- True if the specified composed composed view type is an expandable group item view type. Otherwise, false.