下面列出了android.widget.ListAdapter#getViewTypeCount ( ) 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。
@Override
public void setAdapter(ListAdapter adapter) {
// assert adapter in debug mode
if (BuildConfig.DEBUG && adapter != null) {
if (!(adapter instanceof PinnedSectionListAdapter))
throw new IllegalArgumentException("Does your adapter implement PinnedSectionListAdapter?");
if (adapter.getViewTypeCount() < 2)
throw new IllegalArgumentException("Does your adapter handle at least two types" +
" of views in getViewTypeCount() method: items and sections?");
}
// unregister observer at old adapter and register on new one
ListAdapter oldAdapter = getAdapter();
if (oldAdapter != null) oldAdapter.unregisterDataSetObserver(mDataSetObserver);
if (adapter != null) adapter.registerDataSetObserver(mDataSetObserver);
// destroy pinned shadow, if new adapter is not same as old one
if (oldAdapter != adapter) destroyPinnedShadow();
super.setAdapter(adapter);
}
/**
* Get the type of View that will be created by getView() for the specified
* item.
*
* @param position Position of the item whose data we want
*/
@Override
public int getItemViewType(int position) {
int typeOffset = 0;
int result = -1;
for (ListAdapter piece : pieces) {
int size = piece.getCount();
if (position < size) {
result = typeOffset + piece.getItemViewType(position);
break;
}
position -= size;
typeOffset += piece.getViewTypeCount();
}
return (result);
}
@Override
public void setAdapter(ListAdapter adapter) {
// assert adapter in debug mode
if (BuildConfig.DEBUG && adapter != null) {
if (!(adapter instanceof PinnedSectionListAdapter))
throw new IllegalArgumentException("Does your adapter implement PinnedSectionListAdapter?");
if (adapter.getViewTypeCount() < 2)
throw new IllegalArgumentException("Does your adapter handle at least two types" +
" of views in getViewTypeCount() method: items and sections?");
}
// unregister observer at old adapter and register on new one
ListAdapter oldAdapter = getAdapter();
if (oldAdapter != null) oldAdapter.unregisterDataSetObserver(mDataSetObserver);
if (adapter != null) adapter.registerDataSetObserver(mDataSetObserver);
// destroy pinned shadow, if new adapter is not same as old one
if (oldAdapter != adapter) destroyPinnedShadow();
super.setAdapter(adapter);
}
@Override
public void setAdapter(ListAdapter adapter) {
// assert adapter in debug mode
if (BuildConfig.DEBUG && adapter != null) {
if (!(adapter instanceof PinnedSectionListAdapter))
throw new IllegalArgumentException("Does your adapter implement PinnedSectionListAdapter?");
if (adapter.getViewTypeCount() < 2)
throw new IllegalArgumentException("Does your adapter handle at least two types" +
" of views in getViewTypeCount() method: items and sections?");
}
// unregister observer at old adapter and register on new one
ListAdapter oldAdapter = getAdapter();
if (oldAdapter != null) oldAdapter.unregisterDataSetObserver(mDataSetObserver);
if (adapter != null) adapter.registerDataSetObserver(mDataSetObserver);
// destroy pinned shadow, if new adapter is not same as old one
if (oldAdapter != adapter) destroyPinnedShadow();
super.setAdapter(adapter);
}
@Override
public void setAdapter(ListAdapter adapter) {
// assert adapter in debug mode
if (BuildConfig.DEBUG && adapter != null) {
if (!(adapter instanceof PinnedSectionListAdapter))
throw new IllegalArgumentException("Does your adapter implement PinnedSectionListAdapter?");
if (adapter.getViewTypeCount() < 2)
throw new IllegalArgumentException("Does your adapter handle at least two types" +
" of views in getViewTypeCount() method: items and sections?");
}
// unregister observer at old adapter and register on new one
ListAdapter oldAdapter = getAdapter();
if (oldAdapter != null) oldAdapter.unregisterDataSetObserver(mDataSetObserver);
if (adapter != null) adapter.registerDataSetObserver(mDataSetObserver);
// destroy pinned shadow, if new adapter is not same as old one
if (oldAdapter != adapter) destroyPinnedShadow();
super.setAdapter(adapter);
}
@Override
public void setAdapter(ListAdapter adapter) {
// assert adapter in debug mode
if (BuildConfig.DEBUG && adapter != null) {
if (!(adapter instanceof PinnedSectionListAdapter))
throw new IllegalArgumentException("Does your adapter implement PinnedSectionListAdapter?");
if (adapter.getViewTypeCount() < 2)
throw new IllegalArgumentException("Does your adapter handle at least two types" +
" of views in getViewTypeCount() method: items and sections?");
}
// unregister observer at old adapter and register on new one
ListAdapter oldAdapter = getAdapter();
if (oldAdapter != null) oldAdapter.unregisterDataSetObserver(mDataSetObserver);
if (adapter != null) adapter.registerDataSetObserver(mDataSetObserver);
// destroy pinned shadow, if new adapter is not same as old one
if (oldAdapter != adapter) destroyPinnedShadow();
super.setAdapter(adapter);
}
@Override
public void setAdapter(ListAdapter adapter) {
// assert adapter in debug mode
if (BuildConfig.DEBUG && adapter != null) {
if (!(adapter instanceof PinnedSectionListAdapter))
throw new IllegalArgumentException("Does your adapter implement PinnedSectionListAdapter?");
if (adapter.getViewTypeCount() < 2)
throw new IllegalArgumentException("Does your adapter handle at least two types" +
" of views in getViewTypeCount() method: items and sections?");
}
// unregister observer at old adapter and register on new one
ListAdapter oldAdapter = getAdapter();
if (oldAdapter != null) oldAdapter.unregisterDataSetObserver(mDataSetObserver);
if (adapter != null) adapter.registerDataSetObserver(mDataSetObserver);
// destroy pinned shadow, if new adapter is not same as old one
if (oldAdapter != adapter) destroyPinnedShadow();
super.setAdapter(adapter);
}
/**
* Get the type of View that will be created by getView() for the specified
* item.
*
* @param position Position of the item whose data we want
*/
@Override
public int getItemViewType(int position) {
int typeOffset = 0;
int result = -1;
for (ListAdapter piece : pieces) {
int size = piece.getCount();
if (position < size) {
result = typeOffset + piece.getItemViewType(position);
break;
}
position -= size;
typeOffset += piece.getViewTypeCount();
}
return result;
}
public int getViewTypeCount() {
final ListAdapter adapter = mListAdapter;
if (adapter != null)
return adapter.getViewTypeCount();
else
return 1;
}
@Override
public void setAdapter(ListAdapter adapter) {
// assert adapter in debug mode
if (adapter != null) {
if (!(adapter instanceof PinnedSectionListAdapter))
throw new IllegalArgumentException("Does your adapter implement PinnedSectionListAdapter?");
if (adapter.getViewTypeCount() < 2)
throw new IllegalArgumentException("Does your adapter handle at least two types" +
" of views in getViewTypeCount() method: items and sections?");
}
// unregister observer at old adapter and register on new one
ListAdapter oldAdapter = getAdapter();
if (oldAdapter != null) oldAdapter.unregisterDataSetObserver(mDataSetObserver);
if (adapter != null) adapter.registerDataSetObserver(mDataSetObserver);
// destroy pinned shadow, if new adapter is not same as old one
if (oldAdapter != adapter) destroyPinnedShadow();
Log.e("APP", "mLvFooterLoadingFrame:" + mLvFooterLoadingFrame + " mAddedLvFooter:" + mAddedLvFooter);
if (null != mLvFooterLoadingFrame && !mAddedLvFooter) {
addFooterView(mLvFooterLoadingFrame, null, false);
mAddedLvFooter = true;
}
super.setAdapter(adapter);
}
public int getViewTypeCount() {
final ListAdapter adapter = mListAdapter;
if (adapter != null)
return adapter.getViewTypeCount();
else
return 1;
}
/**
* Returns the number of types of Views that will be created by getView().
*/
@Override
public int getViewTypeCount() {
int total = 0;
for (ListAdapter piece : pieces) {
total += piece.getViewTypeCount();
}
return Math.max(total, 1); // needed for setListAdapter() before
// content add'
}
/**
* Returns the number of types of {@link View}s that will be created by {@link #getView(int, View, ViewGroup)}.
*/
@Override
public int getViewTypeCount() {
int total = 0;
for (ListAdapter piece : pieces) {
total += piece.getViewTypeCount();
}
return (Math.max(total, 1)); // needed for setListAdapter() before
// content add'
}
private int getChildHeight(int position) {
if (position == mSrcPos) {
return 0;
}
View v = getChildAt(position - getFirstVisiblePosition());
if (v != null) {
// item is onscreen, therefore child height is valid,
// hence the "true"
return getChildHeight(position, v, false);
} else {
// item is offscreen
// first check cache for child height at this position
int childHeight = mChildHeightCache.get(position);
if (childHeight != -1) {
// Log.d("mobeta", "found child height in cache!");
return childHeight;
}
final ListAdapter adapter = getAdapter();
int type = adapter.getItemViewType(position);
// There might be a better place for checking for the following
final int typeCount = adapter.getViewTypeCount();
if (typeCount != mSampleViewTypes.length) {
mSampleViewTypes = new View[typeCount];
}
if (type >= 0) {
if (mSampleViewTypes[type] == null) {
v = adapter.getView(position, null, this);
mSampleViewTypes[type] = v;
} else {
v = adapter.getView(position, mSampleViewTypes[type], this);
}
} else {
// type is HEADER_OR_FOOTER or IGNORE
v = adapter.getView(position, null, this);
}
// current child height is invalid, hence "true" below
childHeight = getChildHeight(position, v, true);
// cache it because this could have been expensive
mChildHeightCache.add(position, childHeight);
return childHeight;
}
}
private int getChildHeight(int position)
{
if (position == mSrcPos)
{
return 0;
}
View v = getChildAt(position - getFirstVisiblePosition());
if (v != null)
{
// item is onscreen, therefore child height is valid,
// hence the "true"
return getChildHeight(position, v, false);
}
else
{
// item is offscreen
// first check cache for child height at this position
int childHeight = mChildHeightCache.get(position);
if (childHeight != -1)
{
// Log.d("mobeta", "found child height in cache!");
return childHeight;
}
final ListAdapter adapter = getAdapter();
int type = adapter.getItemViewType(position);
// There might be a better place for checking for the following
final int typeCount = adapter.getViewTypeCount();
if (typeCount != mSampleViewTypes.length)
{
mSampleViewTypes = new View[typeCount];
}
if (type >= 0)
{
if (mSampleViewTypes[type] == null)
{
v = adapter.getView(position, null, this);
mSampleViewTypes[type] = v;
}
else
{
v = adapter.getView(position, mSampleViewTypes[type], this);
}
}
else
{
// type is HEADER_OR_FOOTER or IGNORE
v = adapter.getView(position, null, this);
}
// current child height is invalid, hence "true" below
childHeight = getChildHeight(position, v, true);
// cache it because this could have been expensive
mChildHeightCache.add(position, childHeight);
return childHeight;
}
}
private int getChildHeight(int position) {
if (position == mSrcPos) {
return 0;
}
View v = getChildAt(position - getFirstVisiblePosition());
if (v != null) {
// item is onscreen, therefore child height is valid,
// hence the "true"
return getChildHeight(position, v, false);
} else {
// item is offscreen
// first check cache for child height at this position
int childHeight = mChildHeightCache.get(position);
if (childHeight != -1) {
// Log.d("mobeta", "found child height in cache!");
return childHeight;
}
final ListAdapter adapter = getAdapter();
int type = adapter.getItemViewType(position);
// There might be a better place for checking for the following
final int typeCount = adapter.getViewTypeCount();
if (typeCount != mSampleViewTypes.length) {
mSampleViewTypes = new View[typeCount];
}
if (type >= 0) {
if (mSampleViewTypes[type] == null) {
v = adapter.getView(position, null, this);
mSampleViewTypes[type] = v;
} else {
v = adapter.getView(position, mSampleViewTypes[type], this);
}
} else {
// type is HEADER_OR_FOOTER or IGNORE
v = adapter.getView(position, null, this);
}
// current child height is invalid, hence "true" below
childHeight = getChildHeight(position, v, true);
// cache it because this could have been expensive
mChildHeightCache.add(position, childHeight);
return childHeight;
}
}
private int getChildHeight(int position) {
if (position == mSrcPos) {
return 0;
}
View v = getChildAt(position - getFirstVisiblePosition());
if (v != null) {
// item is onscreen, therefore child height is valid,
// hence the "true"
return getChildHeight(position, v, false);
}
else {
// item is offscreen
// first check cache for child height at this position
int childHeight = mChildHeightCache.get(position);
if (childHeight != - 1) {
// Log.d("mobeta", "found child height in cache!");
return childHeight;
}
final ListAdapter adapter = getAdapter();
int type = adapter.getItemViewType(position);
// There might be a better place for checking for the following
final int typeCount = adapter.getViewTypeCount();
if (typeCount != mSampleViewTypes.length) {
mSampleViewTypes = new View[typeCount];
}
if (type >= 0) {
if (mSampleViewTypes[type] == null) {
v = adapter.getView(position, null, this);
mSampleViewTypes[type] = v;
}
else {
v = adapter.getView(position, mSampleViewTypes[type], this);
}
}
else {
// type is HEADER_OR_FOOTER or IGNORE
v = adapter.getView(position, null, this);
}
// current child height is invalid, hence "true" below
childHeight = getChildHeight(position, v, true);
// cache it because this could have been expensive
mChildHeightCache.add(position, childHeight);
return childHeight;
}
}
private int getChildHeight(int position) {
if (position == mSrcPos) {
return 0;
}
View v = getChildAt(position - getFirstVisiblePosition());
if (v != null) {
// item is onscreen, therefore child height is valid,
// hence the "true"
return getChildHeight(position, v, false);
} else {
// item is offscreen
// first check cache for child height at this position
int childHeight = mChildHeightCache.get(position);
if (childHeight != -1) {
// Log.d("mobeta", "found child height in cache!");
return childHeight;
}
final ListAdapter adapter = getAdapter();
int type = adapter.getItemViewType(position);
// There might be a better place for checking for the following
final int typeCount = adapter.getViewTypeCount();
if (typeCount != mSampleViewTypes.length) {
mSampleViewTypes = new View[typeCount];
}
if (type >= 0) {
if (mSampleViewTypes[type] == null) {
v = adapter.getView(position, null, this);
mSampleViewTypes[type] = v;
} else {
v = adapter.getView(position, mSampleViewTypes[type], this);
}
} else {
// type is HEADER_OR_FOOTER or IGNORE
v = adapter.getView(position, null, this);
}
// current child height is invalid, hence "true" below
childHeight = getChildHeight(position, v, true);
// cache it because this could have been expensive
mChildHeightCache.add(position, childHeight);
return childHeight;
}
}
private int getChildHeight(int position) {
if (position == mSrcPos) {
return 0;
}
View v = getChildAt(position - getFirstVisiblePosition());
if (v != null) {
// item is onscreen, therefore child height is valid,
// hence the "true"
return getChildHeight(position, v, false);
} else {
// item is offscreen
// first check cache for child height at this position
int childHeight = mChildHeightCache.get(position);
if (childHeight != -1) {
// Log.d("mobeta", "found child height in cache!");
return childHeight;
}
final ListAdapter adapter = getAdapter();
int type = adapter.getItemViewType(position);
// There might be a better place for checking for the following
final int typeCount = adapter.getViewTypeCount();
if (typeCount != mSampleViewTypes.length) {
mSampleViewTypes = new View[typeCount];
}
if (type >= 0) {
if (mSampleViewTypes[type] == null) {
v = adapter.getView(position, null, this);
mSampleViewTypes[type] = v;
} else {
v = adapter.getView(position, mSampleViewTypes[type], this);
}
} else {
// type is HEADER_OR_FOOTER or IGNORE
v = adapter.getView(position, null, this);
}
// current child height is invalid, hence "true" below
childHeight = getChildHeight(position, v, true);
// cache it because this could have been expensive
mChildHeightCache.add(position, childHeight);
return childHeight;
}
}
private int getChildHeight(int position) {
if (position == mSrcPos) {
return 0;
}
View v = getChildAt(position - getFirstVisiblePosition());
if (v != null) {
// item is onscreen, therefore child height is valid,
// hence the "true"
return getChildHeight(position, v, false);
} else {
// item is offscreen
// first check cache for child height at this position
int childHeight = mChildHeightCache.get(position);
if (childHeight != -1) {
return childHeight;
}
final ListAdapter adapter = getAdapter();
int type = adapter.getItemViewType(position);
// There might be a better place for checking for the following
final int typeCount = adapter.getViewTypeCount();
if (typeCount != mSampleViewTypes.length) {
mSampleViewTypes = new View[typeCount];
}
if (type >= 0) {
if (mSampleViewTypes[type] == null) {
v = adapter.getView(position, null, this);
mSampleViewTypes[type] = v;
} else {
v = adapter.getView(position, mSampleViewTypes[type], this);
}
} else {
// type is HEADER_OR_FOOTER or IGNORE
v = adapter.getView(position, null, this);
}
// current child height is invalid, hence "true" below
childHeight = getChildHeight(position, v, true);
// cache it because this could have been expensive
mChildHeightCache.add(position, childHeight);
return childHeight;
}
}