[英]Swipe gesture not recognized
對於我的Buttons
onClickListener
我具有以下代碼:
on_enter_button.setOnClickListener(
new View.OnClickListener()
{
public void onClick(View view)
{
enter(words, linearLayout, llp, view);
}
});
而不是按Enter Button
,我只想向任何方向Swipe
屏幕並運行相同的方法: enter(words, linearLayout, llp, view);
目前,我認為我的程序根本無法識別Swipe
手勢。 我認為這是因為我放置了enter(words, linearLayout, llp, view);
錯誤地。 另外,我將所有Gesture
識別代碼放在onCreate()
。 那是編寫代碼的正確方法嗎?
有人可以幫忙嗎?
編輯代碼:
public class Game extends Activity{
public void enter(String[] w, LinearLayout ll, LinearLayout.LayoutParams params, View v){
... //some code
... //some code
... //some code
}
@Override
public boolean onTouchEvent(MotionEvent event) {
return myGestureDetector.onTouchEvent(event);
//error myGestureDetector not recognized since it's created in onCreate so it does not exist here
}
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.game_activity);
SimpleOnGestureListener mySimpleGestureListener = new SimpleOnGestureListener()
{
@Override
public boolean onDoubleTap(MotionEvent e) {
return super.onDoubleTap(e);
}
@Override
//swipe does not work!
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,float velocityY)
{
enter(words, linearLayout, llp, view);
return super.onFling(e1, e2, velocityX, velocityY);
}
@Override
public void onLongPress(MotionEvent e) {
super.onLongPress(e);
}
@Override
public boolean onSingleTapConfirmed(MotionEvent e) {
return super.onSingleTapConfirmed(e);
}
private boolean permissibleYVelocity(float velocityY)
{
if ((velocityY < -200) || (velocityY > 200))
{
return false;
}
else
{
return true;
}
}
};
final GestureDetector myGestureDetector = new GestureDetector(getApplicationContext(), mySimpleGestureListener);
//button listener works
on_enter_button.setOnClickListener(
new View.OnClickListener()
{
public void onClick(View view)
{
enter(words, linearLayout, llp, view);
}
});
}
}
您需要重寫View.onTouchEvent()
。
@Override
public boolean onTouchEvent(MotionEvent event) {
return mGestureDetector.onTouchEvent(event);
}
在SimpleOnGestureListener.onFling()中調用您的方法:
@Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,float velocityY)
{
enter(words, linearLayout, llp, view);
return true;
}
編輯:在onCreate()中也設置您的GestureDectector:
mGestureDetector = new GestureDetector(this, new GestureDetector.SimpleOnGestureListener()
{
@Override
public boolean onDoubleTap(MotionEvent e) {
return super.onDoubleTap(e);
}
@Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,float velocityY)
{
enter(words, linearLayout, llp, view);
return super.onFling(e1, e2, velocityX, velocityY);
}
@Override
public void onLongPress(MotionEvent e) {
super.onLongPress(e);
}
@Override
public boolean onSingleTapConfirmed(MotionEvent e) {
return super.onSingleTapConfirmed(e);
}
private boolean permissibleYVelocity(float velocityY)
{
if ((velocityY < -200) || (velocityY > 200))
{
return false;
}
else
{
return true;
}
}
});
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.