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-rw-r--r--core/java/android/widget/AbsListView.java46
-rw-r--r--core/java/android/widget/AdapterView.java19
-rw-r--r--core/java/android/widget/GridView.java2
-rw-r--r--core/java/android/widget/ListView.java2
4 files changed, 54 insertions, 15 deletions
diff --git a/core/java/android/widget/AbsListView.java b/core/java/android/widget/AbsListView.java
index ed858e7..6e9a418 100644
--- a/core/java/android/widget/AbsListView.java
+++ b/core/java/android/widget/AbsListView.java
@@ -2395,6 +2395,7 @@ public abstract class AbsListView extends AdapterView<ListAdapter> implements Te
lp.itemId = mAdapter.getItemId(position);
}
lp.viewType = mAdapter.getItemViewType(position);
+ lp.isEnabled = mAdapter.isEnabled(position);
if (lp != vlp) {
child.setLayoutParams(lp);
}
@@ -2416,19 +2417,33 @@ public abstract class AbsListView extends AdapterView<ListAdapter> implements Te
}
final int position = getPositionForView(host);
- final ListAdapter adapter = getAdapter();
-
- if ((position == INVALID_POSITION) || (adapter == null)) {
+ if (position == INVALID_POSITION || mAdapter == null) {
// Cannot perform actions on invalid items.
return false;
}
- if (!isEnabled() || !adapter.isEnabled(position)) {
- // Cannot perform actions on disabled items.
+ if (position >= mAdapter.getCount()) {
+ // The position is no longer valid, likely due to a data set
+ // change. We could fail here for all data set changes, since
+ // there is a chance that the data bound to the view may no
+ // longer exist at the same position within the adapter, but
+ // it's more consistent with the standard touch interaction to
+ // click at whatever may have moved into that position.
return false;
}
- final long id = getItemIdAtPosition(position);
+ final boolean isItemEnabled;
+ final ViewGroup.LayoutParams lp = host.getLayoutParams();
+ if (lp instanceof AbsListView.LayoutParams) {
+ isItemEnabled = ((AbsListView.LayoutParams) lp).isEnabled;
+ } else {
+ isItemEnabled = false;
+ }
+
+ if (!isEnabled() || !isItemEnabled) {
+ // Cannot perform actions on disabled items.
+ return false;
+ }
switch (action) {
case AccessibilityNodeInfo.ACTION_CLEAR_SELECTION: {
@@ -2445,11 +2460,13 @@ public abstract class AbsListView extends AdapterView<ListAdapter> implements Te
} return false;
case AccessibilityNodeInfo.ACTION_CLICK: {
if (isClickable()) {
+ final long id = getItemIdAtPosition(position);
return performItemClick(host, position, id);
}
} return false;
case AccessibilityNodeInfo.ACTION_LONG_CLICK: {
if (isLongClickable()) {
+ final long id = getItemIdAtPosition(position);
return performLongPress(host, position, id);
}
} return false;
@@ -2469,13 +2486,20 @@ public abstract class AbsListView extends AdapterView<ListAdapter> implements Te
*/
public void onInitializeAccessibilityNodeInfoForItem(
View view, int position, AccessibilityNodeInfo info) {
- final ListAdapter adapter = getAdapter();
- if (position == INVALID_POSITION || adapter == null) {
+ if (position == INVALID_POSITION) {
// The item doesn't exist, so there's not much we can do here.
return;
}
- if (!isEnabled() || !adapter.isEnabled(position)) {
+ final boolean isItemEnabled;
+ final ViewGroup.LayoutParams lp = view.getLayoutParams();
+ if (lp instanceof AbsListView.LayoutParams) {
+ isItemEnabled = ((AbsListView.LayoutParams) lp).isEnabled;
+ } else {
+ isItemEnabled = false;
+ }
+
+ if (!isEnabled() || !isItemEnabled) {
info.setEnabled(false);
return;
}
@@ -6315,6 +6339,9 @@ public abstract class AbsListView extends AdapterView<ListAdapter> implements Te
*/
long itemId = -1;
+ /** Whether the adapter considers the item enabled. */
+ boolean isEnabled;
+
public LayoutParams(Context c, AttributeSet attrs) {
super(c, attrs);
}
@@ -6340,6 +6367,7 @@ public abstract class AbsListView extends AdapterView<ListAdapter> implements Te
encoder.addProperty("list:viewType", viewType);
encoder.addProperty("list:recycledHeaderFooter", recycledHeaderFooter);
encoder.addProperty("list:forceAdd", forceAdd);
+ encoder.addProperty("list:isEnabled", isEnabled);
}
}
diff --git a/core/java/android/widget/AdapterView.java b/core/java/android/widget/AdapterView.java
index 0cc1b25..2cfefba 100644
--- a/core/java/android/widget/AdapterView.java
+++ b/core/java/android/widget/AdapterView.java
@@ -600,13 +600,20 @@ public abstract class AdapterView<T extends Adapter> extends ViewGroup {
}
/**
- * Get the position within the adapter's data set for the view, where view is a an adapter item
- * or a descendant of an adapter item.
+ * Returns the position within the adapter's data set for the view, where
+ * view is a an adapter item or a descendant of an adapter item.
+ * <p>
+ * <strong>Note:</strong> The result of this method only reflects the
+ * position of the data bound to <var>view</var> during the most recent
+ * layout pass. If the adapter's data set has changed without a subsequent
+ * layout pass, the position returned by this method may not match the
+ * current position of the data within the adapter.
*
- * @param view an adapter item, or a descendant of an adapter item. This must be visible in this
- * AdapterView at the time of the call.
- * @return the position within the adapter's data set of the view, or {@link #INVALID_POSITION}
- * if the view does not correspond to a list item (or it is not currently visible).
+ * @param view an adapter item, or a descendant of an adapter item. This
+ * must be visible in this AdapterView at the time of the call.
+ * @return the position within the adapter's data set of the view, or
+ * {@link #INVALID_POSITION} if the view does not correspond to a
+ * list item (or it is not currently visible)
*/
public int getPositionForView(View view) {
View listItem = view;
diff --git a/core/java/android/widget/GridView.java b/core/java/android/widget/GridView.java
index f994d4a..607e955 100644
--- a/core/java/android/widget/GridView.java
+++ b/core/java/android/widget/GridView.java
@@ -1070,6 +1070,7 @@ public class GridView extends AbsListView {
child.setLayoutParams(p);
}
p.viewType = mAdapter.getItemViewType(0);
+ p.isEnabled = mAdapter.isEnabled(0);
p.forceAdd = true;
int childHeightSpec = getChildMeasureSpec(
@@ -1480,6 +1481,7 @@ public class GridView extends AbsListView {
p = (AbsListView.LayoutParams) generateDefaultLayoutParams();
}
p.viewType = mAdapter.getItemViewType(position);
+ p.isEnabled = mAdapter.isEnabled(position);
if (recycled && !p.forceAdd) {
attachViewToParent(child, where, p);
diff --git a/core/java/android/widget/ListView.java b/core/java/android/widget/ListView.java
index c5632ec..00d017f 100644
--- a/core/java/android/widget/ListView.java
+++ b/core/java/android/widget/ListView.java
@@ -1200,6 +1200,7 @@ public class ListView extends AbsListView {
child.setLayoutParams(p);
}
p.viewType = mAdapter.getItemViewType(position);
+ p.isEnabled = mAdapter.isEnabled(position);
p.forceAdd = true;
final int childWidthSpec = ViewGroup.getChildMeasureSpec(widthMeasureSpec,
@@ -1913,6 +1914,7 @@ public class ListView extends AbsListView {
p = (AbsListView.LayoutParams) generateDefaultLayoutParams();
}
p.viewType = mAdapter.getItemViewType(position);
+ p.isEnabled = mAdapter.isEnabled(position);
if ((recycled && !p.forceAdd) || (p.recycledHeaderFooter
&& p.viewType == AdapterView.ITEM_VIEW_TYPE_HEADER_OR_FOOTER)) {
generated by cgit v1.1 at 2025-01-22 22:16:43 +0000