请看下面的代码。我只发布代码的重要部分。如何为整个屏幕设置OnTouchListener?
activity_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: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>
Game.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;
}
};
}
OnSwipTouchListener.java
注 - 我并不拥有这个类的代码。它由另一位SO成员撰写。
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) {
return gestureDetector.onTouchEvent(event);
}
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;
}
}
现在,我正在尝试使整个活动接触启用。请查看Game.java
以查看我是如何做到的。但问题是,它不会对任何触摸事件做出反应!代码OnSwipTouchListener.java
没有什么不对,因为我通过将侦听器设置为image view
来使用了触摸事件。在尝试使整个活动触摸启用时必定存在问题。通过说“整个活动触摸启用”我的意思是,我需要滑过整个屏幕,而不是将听众添加到imageview
。
我在这里做了什么错?请帮忙!
@Knight ..这些可能有助于.. [问题1](http://stackoverflow.com/questions/3641059/android-ontouchlistener-on-linearlayout) [问题2](HTTP:// stackoverflow.com/questions/5648985/ontouchlistener-for-entire-screen) [question 3](http://stackoverflow.com/questions/11180879/ontouchlistener-doesnt-work-with-relative-layout) – Dreamer
@Dreamer :第三个环节就是答案。请提供它作为答案:) –