让 ImageView 在滑动手势中呈现动画效果
当用户从左到右触摸屏幕时，我可以做出一个检测运动的手势。
但我不知道如何让图像随着该运动而移动。
这样做的目的是在我的应用程序中实现锁定屏幕，就像 iPhone 锁定/解锁功能一样。
我想我必须做一些类似 image_swipe.setAnimate... 之类的事情。
如果有人有任何想法，请告诉我。
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;
@Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
float velocityY) {
try {
if (Math.abs(e1.getY() - e2.getY()) > SWIPE_MAX_OFF_PATH)
return false;
// right to left swipe
if(e2.getX() - e1.getX() > SWIPE_MIN_DISTANCE && Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) {
Toast.makeText(getApplicationContext(), "Right Swipe", Toast.LENGTH_SHORT).show();
//i would like to make ImageView "image_swipe" move along with gesture
}
} catch (Exception e) {
}
return true;
}
I can make a gesture which detects a movement when the user touches the screen from left to right.
But I don't know how to make the image move along with that movement.
The purpose of this is to do a lock screen inside my application like the iPhone lock/unlock feature.
I guess I have to do something like image_swipe.setAnimate... or something.
If anyone has any idea, please let me know.
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;
@Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
float velocityY) {
try {
if (Math.abs(e1.getY() - e2.getY()) > SWIPE_MAX_OFF_PATH)
return false;
// right to left swipe
if(e2.getX() - e1.getX() > SWIPE_MIN_DISTANCE && Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) {
Toast.makeText(getApplicationContext(), "Right Swipe", Toast.LENGTH_SHORT).show();
//i would like to make ImageView "image_swipe" move along with gesture
}
} catch (Exception e) {
}
return true;
}
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请参阅下面的链接，它可能对您有帮助。本例中提供了滑动（onFling）屏幕时的图像移动。
CoverFlow 小部件示例
See the below link, it may help you. The image movement when you swipe (onFling) the screen is available in this example.
CoverFlow Widget Example