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私のプログラムは拡張可能なリストを作成し、スワイプを実装しましたが、ダブルタップを追加する方法はわかりません。Android ExpandableLists&DoubleTapジェスチャーの追加、リスナーの追加方法
まず、私は私のメインクラス内list= getExpandableListView();
を持って、私は次のコード使用して気の抜けたビールを実装:
final ActivitySwipeDetector swipeDetector = new ActivitySwipeDetector();
list.setOnTouchListener(swipeDetector);
list.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
if (swipeDetector.swipeDetected()){
// do the onSwipe action
} else {
// do the onItemClick action
}
}
});
list.setOnItemLongClickListener(new OnItemLongClickListener() {
public boolean onItemLongClick(AdapterView<?> parent, View view,int position, long id) {
if (swipeDetector.swipeDetected()){
// do the onSwipe action
return true;
} else {
// do the onItemLongClick action
return false;
}
}
});
をそして私は私のスワイプ検出器であるクラス作っ:
public class ActivitySwipeDetector implements View.OnTouchListener {
public static enum Action {
LR, // Left to Right
RL, // Right to Left
TB, // Top to bottom
BT, // Bottom to Top
None // when no action was detected
}
private static final String logTag = "SwipeDetector";
private static final int MIN_DISTANCE = 100;
private float downX, downY, upX, upY;
private Action mSwipeDetected = Action.None;
public boolean swipeDetected(){
return mSwipeDetected != Action.None;
}
public Action getAction(){
return mSwipeDetected;
}
public boolean onTouch(View v, MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN: {
downX = event.getX();
downY = event.getY();
mSwipeDetected = Action.None;
return false; // allow other events like Click to be processed
}
case MotionEvent.ACTION_UP: {
upX = event.getX();
upY = event.getY();
float deltaX = downX - upX;
float deltaY = downY - upY;
// horizontal swipe detection
if (Math.abs(deltaX) > MIN_DISTANCE) {
// left or right
if (deltaX < 0) {
Log.i(logTag, "Swipe Left to Right");
mSwipeDetected = Action.LR;
return false;
}
if (deltaX > 0) {
Log.i(logTag, "Swipe Right to Left");
mSwipeDetected = Action.RL;
return false;
}
} else
// vertical swipe detection
if (Math.abs(deltaY) > MIN_DISTANCE) {
// top or down
if (deltaY < 0) {
Log.i(logTag, "Swipe Top to Bottom");
mSwipeDetected = Action.TB;
return false;
}
if (deltaY > 0) {
Log.i(logTag, "Swipe Bottom to Top");
mSwipeDetected = Action.BT;
return false;
}
}
return false;
}
}
return false;
}
を
}
プログラムを作成するために追加するものdダブルタップを見ますか? 私はスワイプクラスに次を追加しようとしました:
public boolean onDoubleTap(MotionEvent e) {
float x = e.getX();
float y = e.getY();
Log.d("Double Tap", "Tapped at: (" + x + "," + y + ")");
return true;
}
しかしイムメインクラス内でのリスナーを追加する方法がわからない...
この私だけ「のリストにエラーが発生します.setOnDoubleTapListener」と "新onDoubleTapListener" ..
list.setOnDoubleTapListener(new OnDoubleTapListener(){
public boolean onDoubleTap(MotionEvent e) {
return false;
}
public boolean onDoubleTapEvent(MotionEvent e) {
// viewA.setText("-" + "onDoubleTapEvent" + "-");
return false;
}
public boolean onSingleTapConfirmed(MotionEvent e) {
//viewA.setText("-" + "onSingleTapConfirmed" + "-");
return false;
}
});
Z.
を助けてください10