嗨我在RelativeLayout上有相对布局的刷卡监听器我有texview ...和ListView,当我向上滑动时我显示了一个listView,当我向下滑动时我隐藏了一个listView。列表View在relativeLayout中,但是当我向下滑动(在relativeLayout中)时,listVIew永远不会隐藏。这就是我所做的:
ublic class RelativeLayoutTouchListener implements View.OnTouchListener {
static final String logTag = "ActivitySwipeDetector";
private Activity activity;
static final int MIN_DISTANCE = 100;// TODO change this runtime based on screen resolution. for 1920x1080 is to small the 100 distance
private float downX, downY, upX, upY;
// private MainActivity mMainActivity;
public RelativeLayoutTouchListener(MainActivity mainActivity) {
activity = mainActivity;
}
public void onRightToLeftSwipe() {
Log.i(logTag, "RightToLeftSwipe!");
Toast.makeText(activity, "RightToLeftSwipe", Toast.LENGTH_SHORT).show();
// activity.doSomething();
}
public void onLeftToRightSwipe() {
Log.i(logTag, "LeftToRightSwipe!");
Toast.makeText(activity, "LeftToRightSwipe", Toast.LENGTH_SHORT).show();
// activity.doSomething();
}
public void onTopToBottomSwipe() {
Log.i(logTag, "onTopToBottomSwipe!");
Toast.makeText(activity, "onTopToBottomSwipe", Toast.LENGTH_SHORT).show();
// activity.doSomething();
}
public void onBottomToTopSwipe() {
Log.i(logTag, "onBottomToTopSwipe!");
Toast.makeText(activity, "onBottomToTopSwipe", Toast.LENGTH_SHORT).show();
// activity.doSomething();
}
public boolean onTouch(View v, MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN: {
Log.e("sdasdas", "dsfdsfdsfsdf");
downX = event.getX();
downY = event.getY();
return true;
}
case MotionEvent.ACTION_UP: {
Log.e("działa", "kikik");
upX = event.getX();
upY = event.getY();
float deltaX = downX - upX;
float deltaY = downY - upY;
Log.e("delta y " , deltaY +"");
// Log.e("delta " , deltaY +"");
// // swipe horizontal?
// if (Math.abs(deltaX) > MIN_DISTANCE) {
// // left or right
// if (deltaX < 0) {
// this.onLeftToRightSwipe();
// return true;
// }
// if (deltaX > 0) {
// this.onRightToLeftSwipe();
// return true;
// }
// } else {
// Log.i(logTag, "Swipe was only " + Math.abs(deltaX) + " long horizontally, need at least " + MIN_DISTANCE);
// // return false; // We don't consume the event
// }
//
// // swipe vertical?
// if (Math.abs(deltaY) > MIN_DISTANCE) {
// // top or down
// if (deltaY < 0) {
// this.onTopToBottomSwipe();
// return true;
// }
// if (deltaY > 0) {
// this.onBottomToTopSwipe();
// return true;
// }
// } else {
// Log.i(logTag, "Swipe was only " + Math.abs(deltaX) + " long vertically, need at least " + MIN_DISTANCE);
// // return false; // We don't consume the event
// }
final ViewGroup.LayoutParams params = MainActivity.relativeLayout1.getLayoutParams();
if(deltaY<0){
params.height = (int) activity.getResources().getDimension(R.dimen.dimen_entry_in_dp);
relativeLayout1.setLayoutParams(params);
MainActivity.listView1.setVisibility(View.GONE);
}else{
params.height = RelativeLayout.LayoutParams.WRAP_CONTENT;
MainActivity.relativeLayout1.setLayoutParams(params);
MainActivity.listView1.setVisibility(View.VISIBLE);
}
return false; // no swipe horizontally and no swipe vertically
}// case MotionEvent.ACTION_UP:
}
return false;
}
}
这就是我如何称呼这个列表:
relativeLayout1.setOnTouchListener(new RelativeLayoutTouchListener(this));
答案 0 :(得分:0)
现在我这样做。我检查了ListView上的可能性,但是当我将listView刷到Up并且它总是列出View隐藏时,我不知道这是否有效
listView1.setOnScrollListener(new AbsListView.OnScrollListener() {
@Override
public void onScrollStateChanged(AbsListView view, int scrollState) {
}
@Override
public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
boolean enable = false;
if (listView1 != null && listView1.getChildCount() > 0) {
boolean firstItemVisible = listView1.getFirstVisiblePosition() == 0;
boolean topOfFirstItemVisible = listView1.getChildAt(0).getTop() == 0;
enable = firstItemVisible && topOfFirstItemVisible;
}
if(enable) {
Log.e("works ? ", "works");
listView1.setOnTouchListener(new RelativeLayoutTouchListener(MainActivity.this));
}
}
});