Java 如何使用JazzyListView实现pullToRefreshListView？
我给你一些提示链接：Java 如何使用JazzyListView实现pullToRefreshListView？,java,android,listview,animation,jazzylistview,Java,Android,Listview,Animation,Jazzylistview,我给你一些提示链接： 我已经实现了JazzylistView，但我还想用PullToRefreshListView实现JazzylistView。这可能吗？谁知道这个答案，请帮助我？我找到了这个解决方案。只需在库中的PullToRefreshListView.java文件中复制下面的粘贴代码 package com.smartupdater.widget; import java.text.SimpleDateFormat; import java.util.Date; import a
我已经实现了
JazzylistViewPullToRefreshListViewJazzylistViewpackage com.smartupdater.widget;
import java.text.SimpleDateFormat;
import java.util.Date;
import android.content.Context;
import android.util.AttributeSet;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewTreeObserver;
import android.view.ViewTreeObserver.OnGlobalLayoutListener;
import android.view.animation.Animation;
import android.view.animation.Animation.AnimationListener;
import android.view.animation.LinearInterpolator;
import android.view.animation.OvershootInterpolator;
import android.view.animation.RotateAnimation;
import android.view.animation.TranslateAnimation;
import android.widget.AdapterView;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.ProgressBar;
import android.widget.RelativeLayout;
import android.widget.TextView;
import com.notecrate.R;
import com.smartupdater.utils.Constants;
public class PullToRefreshListView extends ListView {
private final JazzyHelper mHelper;
private static final float PULL_RESISTANCE = 1.7f;
private static final int BOUNCE_ANIMATION_DURATION = 700;
private static final int BOUNCE_ANIMATION_DELAY = 100;
private static final float BOUNCE_OVERSHOOT_TENSION = 1.4f;
private static final int ROTATE_ARROW_ANIMATION_DURATION = 250;
private static enum State {
PULL_TO_REFRESH, RELEASE_TO_REFRESH, REFRESHING
}
/**
* Interface to implement when you want to get notified of 'pull to refresh'
* events. Call setOnRefreshListener(..) to activate an OnRefreshListener.
*/
public interface OnRefreshListener {
/**
* Method to be called when a refresh is requested
*/
public void onRefresh();
}
private static int measuredHeaderHeight;
private boolean scrollbarEnabled;
private boolean bounceBackHeader;
private boolean lockScrollWhileRefreshing;
private boolean showLastUpdatedText;
private String pullToRefreshText;
private String releaseToRefreshText;
private String refreshingText;
private String lastUpdatedText;
private SimpleDateFormat lastUpdatedDateFormat = new SimpleDateFormat("dd/MM HH:mm");
private float previousY;
private int headerPadding;
private boolean hasResetHeader;
private long lastUpdated = -1;
private State state;
private LinearLayout headerContainer;
private RelativeLayout header;
private RotateAnimation flipAnimation;
private RotateAnimation reverseFlipAnimation;
private ImageView image;
private ProgressBar spinner;
private TextView text;
private TextView lastUpdatedTextView;
private OnItemClickListener onItemClickListener;
private OnItemLongClickListener onItemLongClickListener;
private OnRefreshListener onRefreshListener;
public PullToRefreshListView(Context context) {
super(context);
mHelper = init(context, null);
init();
}
public PullToRefreshListView(Context context, AttributeSet attrs) {
super(context, attrs);
mHelper = init(context, attrs);
init();
}
public PullToRefreshListView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
mHelper = init(context, attrs);
init();
}
private JazzyHelper init(Context context, AttributeSet attrs) {
JazzyHelper helper = new JazzyHelper(context, attrs);
super.setOnScrollListener(helper);
return helper;
}
@Override
public final void setOnScrollListener(OnScrollListener l) {
mHelper.setOnScrollListener(l);
}
public void setTransitionEffect(int transitionEffect) {
mHelper.setTransitionEffect(transitionEffect);
}
public void setShouldOnlyAnimateNewItems(boolean onlyAnimateNew) {
mHelper.setShouldOnlyAnimateNewItems(onlyAnimateNew);
}
public void setShouldOnlyAnimateFling(boolean onlyFling) {
mHelper.setShouldOnlyAnimateFling(onlyFling);
}
public void setSimulateGridWithList(boolean simulateGridWithList) {
mHelper.setSimulateGridWithList(simulateGridWithList);
setClipChildren(!simulateGridWithList);
}
public void setMaxAnimationVelocity(int itemsPerSecond) {
mHelper.setMaxAnimationVelocity(itemsPerSecond);
}
@Override
public void setOnItemClickListener(OnItemClickListener onItemClickListener) {
this.onItemClickListener = onItemClickListener;
}
@Override
public void setOnItemLongClickListener(OnItemLongClickListener onItemLongClickListener) {
this.onItemLongClickListener = onItemLongClickListener;
}
/**
* Activate an OnRefreshListener to get notified on 'pull to refresh'
* events.
*
* @param onRefreshListener
* The OnRefreshListener to get notified
*/
public void setOnRefreshListener(OnRefreshListener onRefreshListener) {
this.onRefreshListener = onRefreshListener;
}
/**
* @return If the list is in 'Refreshing' state
*/
public boolean isRefreshing() {
return state == State.REFRESHING;
}
/**
* Default is false. When lockScrollWhileRefreshing is set to true, the list
* cannot scroll when in 'refreshing' mode. It's 'locked' on refreshing.
*
* @param lockScrollWhileRefreshing
*/
public void setLockScrollWhileRefreshing(boolean lockScrollWhileRefreshing) {
this.lockScrollWhileRefreshing = lockScrollWhileRefreshing;
}
/**
* Default is false. Show the last-updated date/time in the 'Pull ro
* Refresh' header. See 'setLastUpdatedDateFormat' to set the date/time
* formatting.
*
* @param showLastUpdatedText
*/
public void setShowLastUpdatedText(boolean showLastUpdatedText) {
this.showLastUpdatedText = showLastUpdatedText;
if (!showLastUpdatedText)
lastUpdatedTextView.setVisibility(View.GONE);
}
/**
* Default: "dd/MM HH:mm". Set the format in which the last-updated
* date/time is shown. Meaningless if 'showLastUpdatedText == false
* (default)'. See 'setShowLastUpdatedText'.
*
* @param lastUpdatedDateFormat
*/
public void setLastUpdatedDateFormat(SimpleDateFormat lastUpdatedDateFormat) {
this.lastUpdatedDateFormat = lastUpdatedDateFormat;
}
/**
* Explicitly set the state to refreshing. This is useful when you want to
* show the spinner and 'Refreshing' text when the refresh was not triggered
* by 'pull to refresh', for example on start.
*/
public void setRefreshing() {
state = State.REFRESHING;
scrollTo(0, 0);
setUiRefreshing();
setHeaderPadding(0);
}
/**
* Set the state back to 'pull to refresh'. Call this method when refreshing
* the data is finished.
*/
public void onRefreshComplete() {
state = State.PULL_TO_REFRESH;
resetHeader();
lastUpdated = System.currentTimeMillis();
}
/**
* Change the label text on state 'Pull to Refresh'
*
* @param pullToRefreshText
* Text
*/
public void setTextPullToRefresh(String pullToRefreshText) {
this.pullToRefreshText = pullToRefreshText;
if (state == State.PULL_TO_REFRESH) {
text.setText(pullToRefreshText);
}
}
/**
* Change the label text on state 'Release to Refresh'
*
* @param releaseToRefreshText
* Text
*/
public void setTextReleaseToRefresh(String releaseToRefreshText) {
this.releaseToRefreshText = releaseToRefreshText;
if (state == State.RELEASE_TO_REFRESH) {
text.setText(releaseToRefreshText);
}
}
/**
* Change the label text on state 'Refreshing'
*
* @param refreshingText
* Text
*/
public void setTextRefreshing(String refreshingText) {
this.refreshingText = refreshingText;
if (state == State.REFRESHING) {
text.setText(refreshingText);
}
}
private void init() {
setVerticalFadingEdgeEnabled(false);
headerContainer = (LinearLayout) LayoutInflater.from(getContext()).inflate(R.layout.layout_pulldown_header, null);
header = (RelativeLayout) headerContainer.findViewById(R.id.ptr_id_header);
text = (TextView) header.findViewById(R.id.ptr_id_text);
lastUpdatedTextView = (TextView) header.findViewById(R.id.ptr_id_last_updated);
image = (ImageView) header.findViewById(R.id.ptr_id_image);
spinner = (ProgressBar) header.findViewById(R.id.ptr_id_spinner);
pullToRefreshText = getContext().getString(R.string.ptr_pull_to_refresh);
releaseToRefreshText = getContext().getString(R.string.ptr_release_to_refresh);
refreshingText = getContext().getString(R.string.ptr_refreshing);
lastUpdatedText = getContext().getString(R.string.ptr_last_updated);
flipAnimation = new RotateAnimation(0, -180, RotateAnimation.RELATIVE_TO_SELF, 0.5f, RotateAnimation.RELATIVE_TO_SELF, 0.5f);
flipAnimation.setInterpolator(new LinearInterpolator());
flipAnimation.setDuration(ROTATE_ARROW_ANIMATION_DURATION);
flipAnimation.setFillAfter(true);
reverseFlipAnimation = new RotateAnimation(-180, 0, RotateAnimation.RELATIVE_TO_SELF, 0.5f, RotateAnimation.RELATIVE_TO_SELF, 0.5f);
reverseFlipAnimation.setInterpolator(new LinearInterpolator());
reverseFlipAnimation.setDuration(ROTATE_ARROW_ANIMATION_DURATION);
reverseFlipAnimation.setFillAfter(true);
addHeaderView(headerContainer);
setState(State.PULL_TO_REFRESH);
scrollbarEnabled = isVerticalScrollBarEnabled();
ViewTreeObserver vto = header.getViewTreeObserver();
vto.addOnGlobalLayoutListener(new PTROnGlobalLayoutListener());
super.setOnItemClickListener(new PTROnItemClickListener());
super.setOnItemLongClickListener(new PTROnItemLongClickListener());
}
private void setHeaderPadding(int padding) {
headerPadding = padding;
// Log.d(Constants.TAG, "Header Container=" + headerContainer +
// " Header=" + header + " Header Padding=" + headerPadding);
if (header != null) {
MarginLayoutParams mlp = (ViewGroup.MarginLayoutParams) header.getLayoutParams();
mlp.setMargins(0, Math.round(padding), 0, 0);
header.setLayoutParams(mlp);
}
}
@Override
public boolean onTouchEvent(MotionEvent event) {
if (lockScrollWhileRefreshing && (state == State.REFRESHING || getAnimation() != null && !getAnimation().hasEnded())) {
return true;
}
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
if (getFirstVisiblePosition() == 0)
previousY = event.getY();
else
previousY = -1;
break;
case MotionEvent.ACTION_UP:
if (previousY != -1 && (state == State.RELEASE_TO_REFRESH || getFirstVisiblePosition() == 0)) {
switch (state) {
case RELEASE_TO_REFRESH:
setState(State.REFRESHING);
bounceBackHeader();
break;
case PULL_TO_REFRESH:
resetHeader();
break;
}
}
break;
case MotionEvent.ACTION_MOVE:
if (previousY != -1) {
float y = event.getY();
float diff = y - previousY;
if (diff > 0)
diff /= PULL_RESISTANCE;
previousY = y;
int newHeaderPadding = Math.max(Math.round(headerPadding + diff), -header.getHeight());
if (newHeaderPadding != headerPadding && state != State.REFRESHING) {
setHeaderPadding(newHeaderPadding);
if (state == State.PULL_TO_REFRESH && headerPadding > 0) {
setState(State.RELEASE_TO_REFRESH);
image.clearAnimation();
image.startAnimation(flipAnimation);
} else if (state == State.RELEASE_TO_REFRESH && headerPadding < 0) {
setState(State.PULL_TO_REFRESH);
image.clearAnimation();
image.startAnimation(reverseFlipAnimation);
}
return true;
}
}
break;
}
return super.onTouchEvent(event);
}
private void bounceBackHeader() {
int yTranslate = state == State.REFRESHING ? header.getHeight() - headerContainer.getHeight() : -headerContainer.getHeight()
- headerContainer.getTop();
TranslateAnimation bounceAnimation = new TranslateAnimation(TranslateAnimation.ABSOLUTE, 0, TranslateAnimation.ABSOLUTE, 0,
TranslateAnimation.ABSOLUTE, 0, TranslateAnimation.ABSOLUTE, yTranslate);
bounceAnimation.setDuration(BOUNCE_ANIMATION_DURATION);
bounceAnimation.setFillEnabled(true);
bounceAnimation.setFillAfter(false);
bounceAnimation.setFillBefore(true);
bounceAnimation.setInterpolator(new OvershootInterpolator(BOUNCE_OVERSHOOT_TENSION));
bounceAnimation.setAnimationListener(new HeaderAnimationListener(yTranslate));
startAnimation(bounceAnimation);
}
private void resetHeader() {
if (getFirstVisiblePosition() > 0) {
setHeaderPadding(-header.getHeight());
setState(State.PULL_TO_REFRESH);
return;
}
if (getAnimation() != null && !getAnimation().hasEnded()) {
bounceBackHeader = true;
} else {
bounceBackHeader();
}
}
private void setUiRefreshing() {
spinner.setVisibility(View.VISIBLE);
image.clearAnimation();
image.setVisibility(View.INVISIBLE);
text.setText(refreshingText);
}
private void setState(State state) {
this.state = state;
switch (state) {
case PULL_TO_REFRESH:
spinner.setVisibility(View.INVISIBLE);
image.setVisibility(View.VISIBLE);
text.setText(pullToRefreshText);
if (showLastUpdatedText && lastUpdated != -1) {
lastUpdatedTextView.setVisibility(View.VISIBLE);
lastUpdatedTextView.setText(String.format(lastUpdatedText, lastUpdatedDateFormat.format(new Date(lastUpdated))));
}
break;
case RELEASE_TO_REFRESH:
spinner.setVisibility(View.INVISIBLE);
image.setVisibility(View.VISIBLE);
text.setText(releaseToRefreshText);
break;
case REFRESHING:
setUiRefreshing();
lastUpdated = System.currentTimeMillis();
if (onRefreshListener == null) {
setState(State.PULL_TO_REFRESH);
} else {
onRefreshListener.onRefresh();
}
break;
}
}
@Override
protected void onScrollChanged(int l, int t, int oldl, int oldt) {
super.onScrollChanged(l, t, oldl, oldt);
if (!hasResetHeader) {
if (measuredHeaderHeight > 0 && state != State.REFRESHING) {
setHeaderPadding(-measuredHeaderHeight);
}
hasResetHeader = true;
}
}
private class HeaderAnimationListener implements AnimationListener {
private int height, translation;
private State stateAtAnimationStart;
public HeaderAnimationListener(int translation) {
this.translation = translation;
}
@Override
public void onAnimationStart(Animation animation) {
stateAtAnimationStart = state;
android.view.ViewGroup.LayoutParams lp = getLayoutParams();
height = lp.height;
lp.height = getHeight() - translation;
setLayoutParams(lp);
if (scrollbarEnabled) {
setVerticalScrollBarEnabled(false);
}
}
@Override
public void onAnimationEnd(Animation animation) {
setHeaderPadding(stateAtAnimationStart == State.REFRESHING ? 0 : -measuredHeaderHeight - headerContainer.getTop());
setSelection(0);
android.view.ViewGroup.LayoutParams lp = getLayoutParams();
lp.height = height;
setLayoutParams(lp);
if (scrollbarEnabled) {
setVerticalScrollBarEnabled(true);
}
if (bounceBackHeader) {
bounceBackHeader = false;
postDelayed(new Runnable() {
@Override
public void run() {
resetHeader();
}
}, BOUNCE_ANIMATION_DELAY);
} else if (stateAtAnimationStart != State.REFRESHING) {
setState(State.PULL_TO_REFRESH);
}
}
@Override
public void onAnimationRepeat(Animation animation) {
}
}
private class PTROnGlobalLayoutListener implements OnGlobalLayoutListener {
@Override
public void onGlobalLayout() {
int initialHeaderHeight = header.getHeight();
if (initialHeaderHeight > 0) {
measuredHeaderHeight = initialHeaderHeight;
if (measuredHeaderHeight > 0 && state != State.REFRESHING) {
setHeaderPadding(-measuredHeaderHeight);
requestLayout();
}
}
getViewTreeObserver().removeGlobalOnLayoutListener(this);
}
}
private class PTROnItemClickListener implements OnItemClickListener {
@Override
public void onItemClick(AdapterView<?> adapterView, View view, int position, long id) {
hasResetHeader = false;
if (onItemClickListener != null && state == State.PULL_TO_REFRESH) {
// Passing up onItemClick. Correct position with the number of
// header views
onItemClickListener.onItemClick(adapterView, view, position - getHeaderViewsCount(), id);
}
}
}
private class PTROnItemLongClickListener implements OnItemLongClickListener {
@Override
public boolean onItemLongClick(AdapterView<?> adapterView, View view, int position, long id) {
hasResetHeader = false;
if (onItemLongClickListener != null && state == State.PULL_TO_REFRESH) {
// Passing up onItemLongClick. Correct position with the number
// of header views
return onItemLongClickListener.onItemLongClick(adapterView, view, position - getHeaderViewsCount(), id);
}
return false;
}
}
}
package com.smartupdater.widget；
导入java.text.simpleDataFormat；
导入java.util.Date；
导入android.content.Context；
导入android.util.AttributeSet；
导入android.util.Log；
导入android.view.LayoutInflater；
导入android.view.MotionEvent；
导入android.view.view；
导入android.view.ViewGroup；
导入android.view.ViewTreeObserver；
导入android.view.ViewTreeObserver.OnGlobalLayoutListener；
导入android.view.animation.animation；
导入android.view.animation.animation.AnimationListener；
导入android.view.animation.LinearInterpolator；
导入android.view.animation.OvershootInterpolator；
导入android.view.animation.RotateAnimation；
导入android.view.animation.TranslateAnimation；
导入android.widget.AdapterView；
导入android.widget.ImageView；
导入android.widget.LinearLayout；
导入android.widget.ListView；
导入android.widget.ProgressBar；
导入android.widget.RelativeLayout；
导入android.widget.TextView；
进口com.notecrate.R；
导入com.smartupdater.utils.Constants；
公共类PullToRefreshListView扩展了ListView{
私人决赛爵士舞曲；
专用静态最终浮子拉力=1.7f；
私有静态最终整数反弹\动画\持续时间=700；
私有静态最终整数反弹\动画\延迟=100；
私人静态最终浮动反弹\超调\张力=1.4f；
私有静态最终整数旋转箭头动画持续时间=250；
私有静态枚举状态{
拉到刷新，释放到刷新，刷新
}
/**
*当您希望获得“拉入刷新”通知时要实现的接口
*调用setOnRefreshListener（..）以激活OnRefreshListener。
*/
公共接口刷新侦听器{
/**
*请求刷新时要调用的方法
*/
公共void onRefresh（）；
}
专用静态测量头高；
私有布尔值被禁用；
私有布尔值bounceBackHeader；
私有布尔锁滚动，同时刷新；
私有布尔值ShowLastUpdateText；
私有字符串pullToRefreshText；
私有字符串releaseToRefreshText；
私有字符串刷新文本；
私有字符串lastUpdateText；
私有SimpleDataFormat LastUpdateDateFormat=新SimpleDataFormat（“dd/MM HH:MM”）；
私人持股优先；
私人机构；
私有布尔头；
私有long lastUpdated=-1；
私营国家；
私人线路布局总承包商；
私有相对性标题；
私有旋转动画；
私有旋转动画反转动画；
私有图像查看图像；
私人旋转棒；
私有文本查看文本；
私有文本视图lastUpdatedTextView；
私有OnItemClickListener OnItemClickListener；
专用OnItemLongClickListener OnItemLongClickListener；
私有OnRefreshListener-OnRefreshListener；
公共PullToRefreshListView（上下文）{
超级（上下文）；
mHelper=init（上下文，null）；
init（）；
}
公共PullToRefreshListView（上下文、属性集属性）{
超级（上下文，attrs）；
mHelper=init（上下文，attrs）；
init（）；
}
公共PullToRefreshListView（上下文上下文、属性集属性、int-defStyle）{
超级（上下文、属性、定义样式）；
mHelper=init（上下文，attrs）；
init（）；
}
私有JazzyHelper初始化（上下文上下文，属性集属性）{
JazzyHelper助手=新的JazzyHelper（上下文，属性）；
super.setOnScrollListener（助手）；
返回助手；
}
@凌驾
公共最终无效设置OnScrollListener（OnScrollListener l）{
mHelper.setOnScrollListener（l）；
}
public void setTransitionEffect（int-transitionEffect）{
mHelper.setTransitionEffect（transitionEffect）；
}
public void setshouldnolyanimatenewimes（仅布尔值yanimatenew）{
mHelper.setShouldOnlyAnimateNewItems（onlyAnimateNew）；
}
public void setshouldlonlyanimatefling（布尔onlyFling）{
mHelper.setShouldOnlyAnimateFling（onlyFling）；
}
public void setSimulateGridWithList（布尔simulateGridWithList）{
mHelper.setSimulateGridWithList（simulateGridWithList）；
setClipChildren（！simulateGridWithList）；
}
public void setMaxAnimationVelocity（int itemsPerSecond）{
mHelper.setMaxAnimationVelocity（itemsPerSecond）；
}
@凌驾
公共无效setOnItemClickListener（OnItemClickListener OnItemClickListener）{
this.onItemClickListener=onItemClickListener；
}
@凌驾
公共无效设置OnItemLongClickListener（OnItemLongClickListener OnItemLongClickListener）{
this.onItemLongClickListener=onItemLongClickListener；
}
/**
*激活OnRefreshListener以获得“拉入刷新”通知
*事件。
*
*@param onRefreshListener
*OnRefreshListener将收到通知
*/
公共void setOnRefreshListener（OnRefreshListener OnRefreshListener）{
this.onRefreshListener=onRefreshListener；
}
/**
*@return如果列表处于“刷新”状态
*/
公共布尔值isRefreshing（）{
返回状态==状态。正在刷新；
}
/**
*默认值为false。当lockScrollWhileRefreshing设置为true时，列表
*在“刷新”模式下无法滚动。刷新时已“锁定”。
*
*@param lock scroll同时刷新
*/
public void setLockScrollWhileRefreshing（布尔值lo
public void setOnScrollListener(OnScrollListener listener) {
mOnScrollListener = listener;
}
/*******************************************************************************
* Copyright 2011, 2012 Chris Banes.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*******************************************************************************/
package com.handmark.pulltorefresh.library;
import com.example.jazzydemo.R;
import com.handmark.pulltorefresh.library.internal.EmptyViewMethodAccessor;
import com.handmark.pulltorefresh.library.internal.LoadingLayout;
import com.xp.lvbh.others.jazzylistview.JazzyEffect;
import com.xp.lvbh.others.jazzylistview.JazzyHelper;
import android.annotation.TargetApi;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.os.Build.VERSION;
import android.os.Build.VERSION_CODES;
import android.util.AttributeSet;
import android.view.Gravity;
import android.view.MotionEvent;
import android.view.View;
import android.widget.FrameLayout;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.AbsListView.OnScrollListener;
public class PullToRefreshListView extends PullToRefreshAdapterViewBase<ListView> {
private final JazzyHelper mHelper;
private LoadingLayout mHeaderLoadingView;
private LoadingLayout mFooterLoadingView;
private FrameLayout mLvFooterLoadingFrame;
private boolean mListViewExtrasEnabled;
public PullToRefreshListView(Context context) {
super(context);
mHelper = init(context, null);
}
public PullToRefreshListView(Context context, AttributeSet attrs) {
super(context, attrs);
mHelper = init(context, null);
}
public PullToRefreshListView(Context context, Mode mode) {
super(context, mode);
mHelper = init(context, null);
}
public PullToRefreshListView(Context context, Mode mode, AnimationStyle style) {
super(context, mode, style);
mHelper = init(context, null);
}
@Override
public final Orientation getPullToRefreshScrollDirection() {
return Orientation.VERTICAL;
}
@Override
protected void onRefreshing(final boolean doScroll) {
/**
* If we're not showing the Refreshing view, or the list is empty, the
* the header/footer views won't show so we use the normal method.
*/
ListAdapter adapter = mRefreshableView.getAdapter();
if (!mListViewExtrasEnabled || !getShowViewWhileRefreshing() || null == adapter || adapter.isEmpty()) {
super.onRefreshing(doScroll);
return;
}
super.onRefreshing(false);
final LoadingLayout origLoadingView, listViewLoadingView, oppositeListViewLoadingView;
final int selection, scrollToY;
switch (getCurrentMode()) {
case MANUAL_REFRESH_ONLY:
case PULL_FROM_END:
origLoadingView = getFooterLayout();
listViewLoadingView = mFooterLoadingView;
oppositeListViewLoadingView = mHeaderLoadingView;
selection = mRefreshableView.getCount() - 1;
scrollToY = getScrollY() - getFooterSize();
break;
case PULL_FROM_START:
default:
origLoadingView = getHeaderLayout();
listViewLoadingView = mHeaderLoadingView;
oppositeListViewLoadingView = mFooterLoadingView;
selection = 0;
scrollToY = getScrollY() + getHeaderSize();
break;
}
// Hide our original Loading View
origLoadingView.reset();
origLoadingView.hideAllViews();
// Make sure the opposite end is hidden too
oppositeListViewLoadingView.setVisibility(View.GONE);
// Show the ListView Loading View and set it to refresh.
listViewLoadingView.setVisibility(View.VISIBLE);
listViewLoadingView.refreshing();
if (doScroll) {
// We need to disable the automatic visibility changes for now
disableLoadingLayoutVisibilityChanges();
// We scroll slightly so that the ListView's header/footer is at the
// same Y position as our normal header/footer
setHeaderScroll(scrollToY);
// Make sure the ListView is scrolled to show the loading
// header/footer
mRefreshableView.setSelection(selection);
// Smooth scroll as normal
smoothScrollTo(0);
}
}
@Override
protected void onReset() {
/**
* If the extras are not enabled, just call up to super and return.
*/
if (!mListViewExtrasEnabled) {
super.onReset();
return;
}
final LoadingLayout originalLoadingLayout, listViewLoadingLayout;
final int scrollToHeight, selection;
final boolean scrollLvToEdge;
switch (getCurrentMode()) {
case MANUAL_REFRESH_ONLY:
case PULL_FROM_END:
originalLoadingLayout = getFooterLayout();
listViewLoadingLayout = mFooterLoadingView;
selection = mRefreshableView.getCount() - 1;
scrollToHeight = getFooterSize();
scrollLvToEdge = Math.abs(mRefreshableView.getLastVisiblePosition() - selection) <= 1;
break;
case PULL_FROM_START:
default:
originalLoadingLayout = getHeaderLayout();
listViewLoadingLayout = mHeaderLoadingView;
scrollToHeight = -getHeaderSize();
selection = 0;
scrollLvToEdge = Math.abs(mRefreshableView.getFirstVisiblePosition() - selection) <= 1;
break;
}
// If the ListView header loading layout is showing, then we need to
// flip so that the original one is showing instead
if (listViewLoadingLayout.getVisibility() == View.VISIBLE) {
// Set our Original View to Visible
originalLoadingLayout.showInvisibleViews();
// Hide the ListView Header/Footer
listViewLoadingLayout.setVisibility(View.GONE);
/**
* Scroll so the View is at the same Y as the ListView
* header/footer, but only scroll if: we've pulled to refresh, it's
* positioned correctly
*/
if (scrollLvToEdge && getState() != State.MANUAL_REFRESHING) {
mRefreshableView.setSelection(selection);
setHeaderScroll(scrollToHeight);
}
}
// Finally, call up to super
super.onReset();
}
@Override
protected LoadingLayoutProxy createLoadingLayoutProxy(final boolean includeStart, final boolean includeEnd) {
LoadingLayoutProxy proxy = super.createLoadingLayoutProxy(includeStart, includeEnd);
if (mListViewExtrasEnabled) {
final Mode mode = getMode();
if (includeStart && mode.showHeaderLoadingLayout()) {
proxy.addLayout(mHeaderLoadingView);
}
if (includeEnd && mode.showFooterLoadingLayout()) {
proxy.addLayout(mFooterLoadingView);
}
}
return proxy;
}
protected ListView createListView(Context context, AttributeSet attrs) {
final ListView lv;
if (VERSION.SDK_INT >= VERSION_CODES.GINGERBREAD) {
lv = new InternalListViewSDK9(context, attrs);
} else {
lv = new InternalListView(context, attrs);
}
return lv;
}
@Override
protected ListView createRefreshableView(Context context, AttributeSet attrs) {
ListView lv = createListView(context, attrs);
// Set it to this so it can be used in ListActivity/ListFragment
lv.setId(android.R.id.list);
return lv;
}
@Override
protected void handleStyledAttributes(TypedArray a) {
super.handleStyledAttributes(a);
mListViewExtrasEnabled = a.getBoolean(R.styleable.PullToRefresh_ptrListViewExtrasEnabled, true);
if (mListViewExtrasEnabled) {
final FrameLayout.LayoutParams lp = new FrameLayout.LayoutParams(FrameLayout.LayoutParams.MATCH_PARENT,
FrameLayout.LayoutParams.WRAP_CONTENT, Gravity.CENTER_HORIZONTAL);
// Create Loading Views ready for use later
FrameLayout frame = new FrameLayout(getContext());
mHeaderLoadingView = createLoadingLayout(getContext(), Mode.PULL_FROM_START, a);
mHeaderLoadingView.setVisibility(View.GONE);
frame.addView(mHeaderLoadingView, lp);
mRefreshableView.addHeaderView(frame, null, false);
mLvFooterLoadingFrame = new FrameLayout(getContext());
mFooterLoadingView = createLoadingLayout(getContext(), Mode.PULL_FROM_END, a);
mFooterLoadingView.setVisibility(View.GONE);
mLvFooterLoadingFrame.addView(mFooterLoadingView, lp);
/**
* If the value for Scrolling While Refreshing hasn't been
* explicitly set via XML, enable Scrolling While Refreshing.
*/
if (!a.hasValue(R.styleable.PullToRefresh_ptrScrollingWhileRefreshingEnabled)) {
setScrollingWhileRefreshingEnabled(true);
}
}
}
@TargetApi(9)
final class InternalListViewSDK9 extends InternalListView {
public InternalListViewSDK9(Context context, AttributeSet attrs) {
super(context, attrs);
}
@Override
protected boolean overScrollBy(int deltaX, int deltaY, int scrollX, int scrollY, int scrollRangeX,
int scrollRangeY, int maxOverScrollX, int maxOverScrollY, boolean isTouchEvent) {
final boolean returnValue = super.overScrollBy(deltaX, deltaY, scrollX, scrollY, scrollRangeX,
scrollRangeY, maxOverScrollX, maxOverScrollY, isTouchEvent);
// Does all of the hard work...
OverscrollHelper.overScrollBy(PullToRefreshListView.this, deltaX, scrollX, deltaY, scrollY, isTouchEvent);
return returnValue;
}
}
protected class InternalListView extends ListView implements EmptyViewMethodAccessor {
private boolean mAddedLvFooter = false;
public InternalListView(Context context, AttributeSet attrs) {
super(context, attrs);
}
@Override
protected void dispatchDraw(Canvas canvas) {
/**
* This is a bit hacky, but Samsung's ListView has got a bug in it
* when using Header/Footer Views and the list is empty. This masks
* the issue so that it doesn't cause an FC. See Issue #66.
*/
try {
super.dispatchDraw(canvas);
} catch (IndexOutOfBoundsException e) {
e.printStackTrace();
}
}
@Override
public boolean dispatchTouchEvent(MotionEvent ev) {
/**
* This is a bit hacky, but Samsung's ListView has got a bug in it
* when using Header/Footer Views and the list is empty. This masks
* the issue so that it doesn't cause an FC. See Issue #66.
*/
try {
return super.dispatchTouchEvent(ev);
} catch (IndexOutOfBoundsException e) {
e.printStackTrace();
return false;
}
}
@Override
public void setAdapter(ListAdapter adapter) {
// Add the Footer View at the last possible moment
if (null != mLvFooterLoadingFrame && !mAddedLvFooter) {
addFooterView(mLvFooterLoadingFrame, null, false);
mAddedLvFooter = true;
}
super.setAdapter(adapter);
}
@Override
public void setEmptyView(View emptyView) {
PullToRefreshListView.this.setEmptyView(emptyView);
}
@Override
public void setEmptyViewInternal(View emptyView) {
super.setEmptyView(emptyView);
}
}
//add jazzy listview
/**
* Sets the desired transition effect.
*
* @param transitionEffect The non-bundled transition provided by the client.
*/
public void setTransitionEffect(JazzyEffect transitionEffect) {
mHelper.setTransitionEffect(transitionEffect);
}
@Override
public void setOnScrollListener(OnScrollListener l) {
mHelper.setOnScrollListener(l);
}
private JazzyHelper init(Context context, AttributeSet attrs) {
JazzyHelper helper = new JazzyHelper(context, attrs);
super.setOnScrollListener(helper);
return helper;
}
}