Java OnTouchListener:在屏幕上滑动
请看一下下面的代码。我只是发布代码的重要部分 活动\u game.xmlJava OnTouchListener:在屏幕上滑动,java,android,eclipse,android-activity,swipe,Java,Android,Eclipse,Android Activity,Swipe,请看一下下面的代码。我只是发布代码的重要部分 活动\u game.xml <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/fullView" android:layout_width="match_parent" android:l
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/fullView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".Game" >
<TextView
android:id="@+id/numberOfQuestionsLeft"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginLeft="20dp"
android:text="TextView" />
</RelativeLayout>
OnSwipTouchListener.java
public class Game extends Activity {
private View fullView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_game);
fullView = (View)findViewById(R.id.fullView);
fullView.setOnTouchListener(imageViewSwiped);
}
OnTouchListener imageViewSwiped = new OnSwipeTouchListener()
{
public boolean onSwipeRight()
{
//code removed
}
public boolean onSwipeLeft()
{
//code removed
return true;
}
public boolean onSwipeBottom()
{
//code removed
return true;
}
};
}
注意-我不拥有此类代码。它是由另一位SO成员编写的
package game.Game;
import android.view.GestureDetector;
import android.view.GestureDetector.SimpleOnGestureListener;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;
public class OnSwipeTouchListener implements OnTouchListener {
private final GestureDetector gestureDetector = new GestureDetector(new GestureListener());
public boolean onTouch(final View v, final MotionEvent event) {
gestureDetector.onTouchEvent(event);
return true;
}
private final class GestureListener extends SimpleOnGestureListener {
private static final int SWIPE_THRESHOLD = 100;
private static final int SWIPE_VELOCITY_THRESHOLD = 100;
@Override
public boolean onDown(MotionEvent e) {
return super.onDown(e);
}
@Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
boolean result = false;
try {
float diffY = e2.getY() - e1.getY();
float diffX = e2.getX() - e1.getX();
if (Math.abs(diffX) > Math.abs(diffY)) {
if (Math.abs(diffX) > SWIPE_THRESHOLD && Math.abs(velocityX) > SWIPE_VELOCITY_THRESHOLD) {
if (diffX > 0) {
result = onSwipeRight();
} else {
result = onSwipeLeft();
}
}
} else {
if (Math.abs(diffY) > SWIPE_THRESHOLD && Math.abs(velocityY) > SWIPE_VELOCITY_THRESHOLD) {
if (diffY > 0) {
result = onSwipeBottom();
} else {
result = onSwipeTop();
}
}
}
} catch (Exception exception) {
exception.printStackTrace();
}
return result;
}
}
public boolean onSwipeRight() {
return false;
}
public boolean onSwipeLeft() {
return false;
}
public boolean onSwipeTop() {
return false;
}
public boolean onSwipeBottom() {
return false;
}
}
此代码设置在我可以在活动中触摸和滑动的位置。但是,有一个问题。我注意到我需要在活动中刷一个空白区域,那里没有按钮、图像、文本框等,这样才能工作。但这不是我需要的。即使用户触摸按钮并向左、向右或向下滑动,也应该可以工作。我该怎么做呢 好吧,为什么我会被否决?请评论。在那之前,读一下这个问题,没人知道答案?