我是一名n00b程序员，需要很多帮助。
仅仅是为了教学目的，我想制作简单的动植物（植物和动物）百科全书
我想让我的主屏幕像Android的主屏幕一样可拖动。向右滑动以打开Plant页面并向左滑动以打开Animal页面。我不知道如何制作过渡效果。所以我们可以将它拖到中途看看下一页的内容，然后再拖回去取消它
你们可以分享一个链接来制作可拖动的屏幕吗？
谢谢你
[编辑]
@Agarwal我尝试了你的Link2中的代码，但它没有用
我尝试通过将Toast放入内部类但未显示Toast来测试是否检测到手势。但Link1基本相同。
从代码的外观来看，我认为它不能让我的屏幕像Android的主屏幕一样可拖动
我的代码：
public class Home extends Activity implements OnClickListener {
private GestureDetector gestureDetector;
View.OnTouchListener gestureListener;
ImageButton flora, fauna;
Intent go;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
initialize();
gestureDetector = new GestureDetector(new SwipeGestureDetector());
gestureListener = new View.OnTouchListener() {
public boolean onTouch(View v, MotionEvent event) {
return gestureDetector.onTouchEvent(event);
}
};
}
private void initialize() {
//find view by id to image button
//set onClickListener to image button
}
public void onClick(View v) {
//normal switch and case for each button
}
private void onLeftSwipe() {
Toast t = Toast.makeText(Home.this, "Left swipe", Toast.LENGTH_LONG);
t.show();
go = new Intent("test.apps.FLORA");
startActivity(go);
}
private void onRightSwipe() {
Toast t = Toast.makeText(Home.this, "Right swipe", Toast.LENGTH_LONG);
t.show();
go = new Intent("test.apps.FAUNA");
startActivity(go);
}
private class SwipeGestureDetector extends SimpleOnGestureListener {
private static final int SWIPE_MIN_DISTANCE = 50;
private static final int SWIPE_MAX_OFF_PATH = 200;
private static final int SWIPE_THRESHOLD_VELOCITY = 200;
@Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
float velocityY) {
try {
Toast t = Toast.makeText(Home.this, "Gesture detected", Toast.LENGTH_SHORT);
t.show();
float diffAbs = Math.abs(e1.getY() - e2.getY());
float diff = e1.getX() - e2.getX();
if (diffAbs > SWIPE_MAX_OFF_PATH)
return false;
// Left swipe
if (diff > SWIPE_MIN_DISTANCE
&& Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) {
Home.this.onLeftSwipe();
}
// Right swipe
else if (-diff > SWIPE_MIN_DISTANCE
&& Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) {
Home.this.onRightSwipe();
}
} catch (Exception e) {
Log.e("Home", "Error on gestures");
}
return false;
}
}
}
我意识到这是一个古老的问题，但是对于其他任何想知道为什么上面的代码不起作用的人是因为他没有将OnTouchListener设置为View对象。这就是为什么他的滑动“事件”没有被接收，因为没有人在听它。
他可以添加这一行来设置他的图像按钮上的滑动（虽然你可能想要一个更好的View对象然后这个）：
flora.setOnTouchListener(gestureListener);
Android活动刷卡检测
创建基本活动类
public abstract class _SwipeActivityClass extends AppCompatActivity
{
private static final int SWIPE_MIN_DISTANCE = 120;
private static final int SWIPE_MAX_OFF_PATH = 250;
private static final int SWIPE_THRESHOLD_VELOCITY = 200;
private GestureDetector gestureDetector;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
gestureDetector = new GestureDetector( this, new SwipeDetector());
}
protected abstract void onSwipeRight();
protected abstract void onSwipeLeft();
public class SwipeDetector extends GestureDetector.SimpleOnGestureListener
{
@Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY)
{
// Check movement along the Y-axis. If it exceeds SWIPE_MAX_OFF_PATH,
// then dismiss the swipe.
if (Math.abs(e1.getY() - e2.getY()) > SWIPE_MAX_OFF_PATH)
{
return false;
}
//toast( "start = "+String.valueOf( e1.getX() )+" | end = "+String.valueOf( e2.getX() ) );
//from left to right
if( e2.getX() > e1.getX() )
{
if (e2.getX() - e1.getX() > SWIPE_MIN_DISTANCE && Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY)
{
onSwipeRight();
return true;
}
}
if( e1.getX() > e2.getX() )
{
if (e1.getX() - e2.getX() > SWIPE_MIN_DISTANCE && Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY)
{
onSwipeLeft();
return true;
}
}
return false;
}
}
@Override
public boolean dispatchTouchEvent(MotionEvent ev)
{
// TouchEvent dispatcher.
if (gestureDetector != null)
{
if (gestureDetector.onTouchEvent(ev))
// If the gestureDetector handles the event, a swipe has been
// executed and no more needs to be done.
return true;
}
return super.dispatchTouchEvent(ev);
}
@Override
public boolean onTouchEvent(MotionEvent event)
{
return gestureDetector.onTouchEvent(event);
}
}
然后从_SwipeActivityClass扩展您的Activity
实现onSwipeLeft（）和onSwipeRight（）方法以启动另一个活动
使用此处的Intent函数转到手势监听器上的下一个活动
它会b