Android-サムスンの連絡先リストビューのようにリストビュースライドを左/右
私はアプリケーションを開発していますが、Samsung Galaxy SのListViewのようなリストビューが必要です：
指を右にスライドさせると、この連絡先にメッセージを送信できます。
指を右にスライドさせると、連絡先に電話をかけることができます。
私はリストビューを持っていますが、それを行うための機能のみが必要です...
前もって感謝します。
PD：よく検索しましたが、何も見つかりませんでした。最も類似したもの： Androidリストビューでのわずかな左/右スライドアクション）のリソース
ここで何をするかは、特にリストビュー用に新しいビューを作成することです（ListViewFlingerまたは何かと呼びます）。次に、このビューでonTouchEventメソッドをオーバーライドし、そこにコードを配置してスライドジェスチャを決定します。スライドジェスチャを取得したら、onSlideCompleteイベント（そのリスナーを作成する必要があります）をヴォイアラ、スライドアクティブコンテンツを含むListViewを起動します。
float historicX = Float.NaN, historicY = Float.NaN;
static final TRIGGER_DELTA = 50; // Number of pixels to travel till trigger
@Override public boolean onTouchEvent(MotionEvent e) {
switch (e.getAction()) {
case MotionEvent.ACTION_DOWN:
historicX = e.getX();
historicY = e.getY();
break;
case MotionEvent.ACTION_UP:
if (e.getX() - historicX > -TRIGGER_DELTA) {
onSlideComplete(Direction.LEFT);
return true;
}
else if (e.getX() - historicX > TRIGGER_DELTA) {
onSlideComplete(Direction.RIGHT);
return true;
} break;
default:
return super.onTouchEvent(e);
}
}
enum Direction {
LEFT, RIGHT;
}
interface OnSlideCompleteListener {
void onSlideComplete(Direction dir);
}
別の投稿から、このGoogleコードへのリンクがありました： https://Gist.github.com/2980593 このGoogle+投稿からのリンク： https://plus.google.com/u/0/113735310430199015092/posts/Fgo1p5uWZLu 。これは、スワイプして閉じる機能です。
これから、独自のSwipe-To-Actionコードを提供できます。これが私のバージョンです。左右のアクションをパーソナライズでき、Dismissアニメーションをトリガーできます（これは、Roman Nuricのコードの単なる修正です）。
このクラスをプロジェクトに含める必要があります。
public class SwipeListViewTouchListener implements View.OnTouchListener {
// Cached ViewConfiguration and system-wide constant values
private int mSlop;
private int mMinFlingVelocity;
private int mMaxFlingVelocity;
private long mAnimationTime;
// Fixed properties
private ListView mListView;
private OnSwipeCallback mCallback;
private int mViewWidth = 1; // 1 and not 0 to prevent dividing by zero
private boolean dismissLeft = true;
private boolean dismissRight = true;
// Transient properties
private List < PendingSwipeData > mPendingSwipes = new ArrayList < PendingSwipeData > ();
private int mDismissAnimationRefCount = 0;
private float mDownX;
private boolean mSwiping;
private VelocityTracker mVelocityTracker;
private int mDownPosition;
private View mDownView;
private boolean mPaused;
/**
* The callback interface used by {@link SwipeListViewTouchListener} to inform its client
* about a successful swipe of one or more list item positions.
*/
public interface OnSwipeCallback {
/**
* Called when the user has swiped the list item to the left.
*
* @param listView The originating {@link ListView}.
* @param reverseSortedPositions An array of positions to dismiss, sorted in descending
* order for convenience.
*/
void onSwipeLeft(ListView listView, int[] reverseSortedPositions);
void onSwipeRight(ListView listView, int[] reverseSortedPositions);
}
/**
* Constructs a new swipe-to-action touch listener for the given list view.
*
* @param listView The list view whose items should be dismissable.
* @param callback The callback to trigger when the user has indicated that she would like to
* dismiss one or more list items.
*/
public SwipeListViewTouchListener(ListView listView, OnSwipeCallback callback) {
ViewConfiguration vc = ViewConfiguration.get(listView.getContext());
mSlop = vc.getScaledTouchSlop();
mMinFlingVelocity = vc.getScaledMinimumFlingVelocity();
mMaxFlingVelocity = vc.getScaledMaximumFlingVelocity();
mAnimationTime = listView.getContext().getResources().getInteger(
Android.R.integer.config_shortAnimTime);
mListView = listView;
mCallback = callback;
}
/**
* Constructs a new swipe-to-action touch listener for the given list view.
*
* @param listView The list view whose items should be dismissable.
* @param callback The callback to trigger when the user has indicated that she would like to
* dismiss one or more list items.
* @param dismissLeft set if the dismiss animation is up when the user swipe to the left
* @param dismissRight set if the dismiss animation is up when the user swipe to the right
* @see #SwipeListViewTouchListener(ListView, OnSwipeCallback, boolean, boolean)
*/
public SwipeListViewTouchListener(ListView listView, OnSwipeCallback callback, boolean dismissLeft, boolean dismissRight) {
this(listView, callback);
this.dismissLeft = dismissLeft;
this.dismissRight = dismissRight;
}
/**
* Enables or disables (pauses or resumes) watching for swipe-to-dismiss gestures.
*
* @param enabled Whether or not to watch for gestures.
*/
public void setEnabled(boolean enabled) {
mPaused = !enabled;
}
/**
* Returns an {@link Android.widget.AbsListView.OnScrollListener} to be added to the
* {@link ListView} using
* {@link ListView#setOnScrollListener(Android.widget.AbsListView.OnScrollListener)}.
* If a scroll listener is already assigned, the caller should still pass scroll changes
* through to this listener. This will ensure that this
* {@link SwipeListViewTouchListener} is paused during list view scrolling.</p>
*
* @see {@link SwipeListViewTouchListener}
*/
public AbsListView.OnScrollListener makeScrollListener() {
return new AbsListView.OnScrollListener() {@
Override
public void onScrollStateChanged(AbsListView absListView, int scrollState) {
setEnabled(scrollState != AbsListView.OnScrollListener.SCROLL_STATE_TOUCH_SCROLL);
}
@
Override
public void onScroll(AbsListView absListView, int i, int i1, int i2) {}
};
}
@
Override
public boolean onTouch(View view, MotionEvent motionEvent) {
if (mViewWidth < 2) {
mViewWidth = mListView.getWidth();
}
switch (motionEvent.getActionMasked()) {
case MotionEvent.ACTION_DOWN:
{
if (mPaused) {
return false;
}
// TODO: ensure this is a finger, and set a flag
// Find the child view that was touched (perform a hit test)
Rect rect = new Rect();
int childCount = mListView.getChildCount();
int[] listViewCoords = new int[2];
mListView.getLocationOnScreen(listViewCoords);
int x = (int) motionEvent.getRawX() - listViewCoords[0];
int y = (int) motionEvent.getRawY() - listViewCoords[1];
View child;
for (int i = 0; i < childCount; i++) {
child = mListView.getChildAt(i);
child.getHitRect(rect);
if (rect.contains(x, y)) {
mDownView = child;
break;
}
}
if (mDownView != null) {
mDownX = motionEvent.getRawX();
mDownPosition = mListView.getPositionForView(mDownView);
mVelocityTracker = VelocityTracker.obtain();
mVelocityTracker.addMovement(motionEvent);
}
view.onTouchEvent(motionEvent);
return true;
}
case MotionEvent.ACTION_UP:
{
if (mVelocityTracker == null) {
break;
}
float deltaX = motionEvent.getRawX() - mDownX;
mVelocityTracker.addMovement(motionEvent);
mVelocityTracker.computeCurrentVelocity(500); // 1000 by defaut but it was too much
float velocityX = Math.abs(mVelocityTracker.getXVelocity());
float velocityY = Math.abs(mVelocityTracker.getYVelocity());
boolean swipe = false;
boolean swipeRight = false;
if (Math.abs(deltaX) > mViewWidth / 2) {
swipe = true;
swipeRight = deltaX > 0;
} else if (mMinFlingVelocity <= velocityX && velocityX <= mMaxFlingVelocity && velocityY < velocityX) {
swipe = true;
swipeRight = mVelocityTracker.getXVelocity() > 0;
}
if (swipe) {
// sufficent swipe value
final View downView = mDownView; // mDownView gets null'd before animation ends
final int downPosition = mDownPosition;
final boolean toTheRight = swipeRight;
++mDismissAnimationRefCount;
mDownView.animate()
.translationX(swipeRight ? mViewWidth : -mViewWidth)
.alpha(0)
.setDuration(mAnimationTime)
.setListener(new AnimatorListenerAdapter() {@
Override
public void onAnimationEnd(Animator animation) {
performSwipeAction(downView, downPosition, toTheRight, toTheRight ? dismissRight : dismissLeft);
}
});
} else {
// cancel
mDownView.animate()
.translationX(0)
.alpha(1)
.setDuration(mAnimationTime)
.setListener(null);
}
mVelocityTracker = null;
mDownX = 0;
mDownView = null;
mDownPosition = ListView.INVALID_POSITION;
mSwiping = false;
break;
}
case MotionEvent.ACTION_MOVE:
{
if (mVelocityTracker == null || mPaused) {
break;
}
mVelocityTracker.addMovement(motionEvent);
float deltaX = motionEvent.getRawX() - mDownX;
if (Math.abs(deltaX) > mSlop) {
mSwiping = true;
mListView.requestDisallowInterceptTouchEvent(true);
// Cancel ListView's touch (un-highlighting the item)
MotionEvent cancelEvent = MotionEvent.obtain(motionEvent);
cancelEvent.setAction(MotionEvent.ACTION_CANCEL |
(motionEvent.getActionIndex() << MotionEvent.ACTION_POINTER_INDEX_SHIFT));
mListView.onTouchEvent(cancelEvent);
}
if (mSwiping) {
mDownView.setTranslationX(deltaX);
mDownView.setAlpha(Math.max(0f, Math.min(1f,
1f - 2f * Math.abs(deltaX) / mViewWidth)));
return true;
}
break;
}
}
return false;
}
class PendingSwipeData implements Comparable < PendingSwipeData > {
public int position;
public View view;
public PendingSwipeData(int position, View view) {
this.position = position;
this.view = view;
}
@
Override
public int compareTo(PendingSwipeData other) {
// Sort by descending position
return other.position - position;
}
}
private void performSwipeAction(final View swipeView, final int swipePosition, boolean toTheRight, boolean dismiss) {
// Animate the dismissed list item to zero-height and fire the dismiss callback when
// all dismissed list item animations have completed. This triggers layout on each animation
// frame; in the future we may want to do something smarter and more performant.
final ViewGroup.LayoutParams lp = swipeView.getLayoutParams();
final int originalHeight = swipeView.getHeight();
final boolean swipeRight = toTheRight;
ValueAnimator animator;
if (dismiss)
animator = ValueAnimator.ofInt(originalHeight, 1).setDuration(mAnimationTime);
else
animator = ValueAnimator.ofInt(originalHeight, originalHeight - 1).setDuration(mAnimationTime);
animator.addListener(new AnimatorListenerAdapter() {@
Override
public void onAnimationEnd(Animator animation) {
--mDismissAnimationRefCount;
if (mDismissAnimationRefCount == 0) {
// No active animations, process all pending dismisses.
// Sort by descending position
Collections.sort(mPendingSwipes);
int[] swipePositions = new int[mPendingSwipes.size()];
for (int i = mPendingSwipes.size() - 1; i >= 0; i--) {
swipePositions[i] = mPendingSwipes.get(i).position;
}
if (swipeRight)
mCallback.onSwipeRight(mListView, swipePositions);
else
mCallback.onSwipeLeft(mListView, swipePositions);
ViewGroup.LayoutParams lp;
for (PendingSwipeData pendingDismiss: mPendingSwipes) {
// Reset view presentation
pendingDismiss.view.setAlpha(1f);
pendingDismiss.view.setTranslationX(0);
lp = pendingDismiss.view.getLayoutParams();
lp.height = originalHeight;
pendingDismiss.view.setLayoutParams(lp);
}
mPendingSwipes.clear();
}
}
});
animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {@
Override
public void onAnimationUpdate(ValueAnimator valueAnimator) {
lp.height = (Integer) valueAnimator.getAnimatedValue();
swipeView.setLayoutParams(lp);
}
});
mPendingSwipes.add(new PendingSwipeData(swipePosition, swipeView));
animator.start();
}
}
そこから、次のコードをListViewを使用してアクティビティのonCreateに追加できます。
// Create a ListView-specific touch listener. ListViews are given special treatment because
// by default they handle touches for their list items... i.e. they're in charge of drawing
// the pressed state (the list selector), handling list item clicks, etc.
SwipeListViewTouchListener touchListener =
new SwipeListViewTouchListener(
listView,
new SwipeListViewTouchListener.OnSwipeCallback() {
@Override
public void onSwipeLeft(ListView listView, int [] reverseSortedPositions) {
// Log.i(this.getClass().getName(), "swipe left : pos="+reverseSortedPositions[0]);
// TODO : YOUR CODE HERE FOR LEFT ACTION
}
@Override
public void onSwipeRight(ListView listView, int [] reverseSortedPositions) {
// Log.i(ProfileMenuActivity.class.getClass().getName(), "swipe right : pos="+reverseSortedPositions[0]);
// TODO : YOUR CODE HERE FOR RIGHT ACTION
}
},
true, // example : left action = dismiss
false); // example : right action without dismiss animation
listView.setOnTouchListener(touchListener);
// Setting this scroll listener is required to ensure that during ListView scrolling,
// we don't look for swipes.
listView.setOnScrollListener(touchListener.makeScrollListener());
編集：スワイプ中に色の変更を追加するには、コードがcase MotionEvent.ACTION_MOVE 近くに mDownView.setAlpha。
アクションを実行する場合スワイプ時：
チェックアウトSwipeActionAdapter （
基になるLayoutまたはColorを使用して両方向にスワイプできるすばらしいライブラリで、スワイプ/スライドジェスチャが完了したときに目的のアクションを実行します。レイアウトを表示/変更するように構成できます。
〜Samsung Contactsアプリを使用したことはありませんが、このように聞こえます
Revealアクション可能ボタンにスワイプする場合：
チェックアウト SwipeMenuListView
ある意味では、iOSのスワイプ可能なTableViewに似ています。
