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Diffstat (limited to 'core/java/android/view/InputDevice.java')
| -rwxr-xr-x | core/java/android/view/InputDevice.java | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/core/java/android/view/InputDevice.java b/core/java/android/view/InputDevice.java index 4848a7a..85f435c 100755 --- a/core/java/android/view/InputDevice.java +++ b/core/java/android/view/InputDevice.java @@ -167,6 +167,19 @@ public final class InputDevice implements Parcelable { /** * The input source is a stylus pointing device. + * <p> + * Note that this bit merely indicates that an input device is capable of obtaining + * input from a stylus. To determine whether a given touch event was produced + * by a stylus, examine the tool type returned by {@link MotionEvent#getToolType(int)} + * for each individual pointer. + * </p><p> + * A single touch event may multiple pointers with different tool types, + * such as an event that has one pointer with tool type + * {@link MotionEvent#TOOL_TYPE_FINGER} and another pointer with tool type + * {@link MotionEvent#TOOL_TYPE_STYLUS}. So it is important to examine + * the tool type of each pointer, regardless of the source reported + * by {@link MotionEvent#getSource()}. + * </p> * * @see #SOURCE_CLASS_POINTER */ |