Android 安卓onClick阻塞onFling
我有一个活动,它实现了一个手势检测器来捕捉用户的输入,以便导航到其他屏幕。这很好——但是——我最近更新了一个从BaseActivity派生的类,添加了onClick函数,现在click事件似乎阻止了onFling被命中。onClick绑定到屏幕上的文本视图区域(在线性布局中)。ResultClick方法在XML布局中使用其onClick属性连接到TextView 我尝试过在onSingleTapUp和onDown中更改返回值,但没有运气。我还尝试将日志语句添加到下面的所有函数中。当我在文本视图区域中弹出时,它们都不会开火,但它们会在屏幕的其他区域开火 也许我使用了错误的搜索词,但我似乎找不到解决这个问题的例子——但我相信这个问题以前已经解决了Android 安卓onClick阻塞onFling,android,android-activity,onclick,gesture-recognition,Android,Android Activity,Onclick,Gesture Recognition,我有一个活动,它实现了一个手势检测器来捕捉用户的输入,以便导航到其他屏幕。这很好——但是——我最近更新了一个从BaseActivity派生的类,添加了onClick函数,现在click事件似乎阻止了onFling被命中。onClick绑定到屏幕上的文本视图区域(在线性布局中)。ResultClick方法在XML布局中使用其onClick属性连接到TextView 我尝试过在onSingleTapUp和onDown中更改返回值,但没有运气。我还尝试将日志语句添加到下面的所有函数中。当我在文本视图区
public class DerivedActivity extends BaseActivity
{
...
/**
* resultsClick - The user clicked on the Results area
* @param v
*/
public void resultsClick(View v)
{
try
{
Log.i(this.toString(), "resultsClick");
startActivity(new Intent(this, Results_TabHost.class ));
}
catch (Exception e)
{
Log.e(this.toString(), "Exception" + e.toString());
}
}// end resultsClick
...
}
下面是实现GestureListener代码的基类
public class BaseActivity extends ActivityGroup
implements OnGestureListener
{
...
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;
public boolean onFling(MotionEvent e1,
MotionEvent e2,
float velocityX,
float velocityY)
{
try
{
Log.i(this.toString(), "onFling");
// jump right out if not a swipe/fling
if (Math.abs( e1.getY() - e2.getY() ) > SWIPE_MAX_OFF_PATH)
{
return false;
}
// right to left swipe
if (e1.getX() - e2.getX() > SWIPE_MIN_DISTANCE &&
Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY )
{
Log.i(this.toString(), "fling left");
rightArrowClick(null);
}
else if (e2.getX() - e1.getX() > SWIPE_MIN_DISTANCE &&
Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY )
{
Log.i(this.toString(), "fling right");
leftArrowClick(null);
}
}
catch (Exception e)
{
Log.e(this.toString(), "Exception" + e.toString());
}
return true;
}// end onFling
// These next methods we are required to have - even if unused -
// in order for the Gesture Handling to work
@Override
public boolean onTouchEvent(MotionEvent motionEvent)
{
return this.gestureDetector.onTouchEvent(motionEvent);
}
@Override
public void onLongPress(MotionEvent e)
{
// Intentionally not handling - must be overridden by listener class
}
@Override
public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY)
{
// Intentionally not handling - must be overridden by listener class
// Intentionally returning true - per code examples
return true;
}
@Override
public void onShowPress(MotionEvent e)
{
// Intentionally not handling - must be overridden by listener class
}
@Override
public boolean onSingleTapUp(MotionEvent e)
{
// Intentionally not handling - must be overridden by listener class
// Intentionally returning true - per code examples
return true;
}
@Override
public boolean onDown(MotionEvent e)
{
// Intentionally not handling - must be overridden by listener class
// Intentionally returning true - per code examples
return true;
}
...
}
您对onTouchEvent的实现不正确。 您只需返回gestureDector结果的值 但是,如果您的手势检测器没有检测到任何手势,您会告诉来电者“我在这里没有任何事情要做”,触摸事件将永远不会发送给活动的孩子 如果手势检测器没有处理该事件,则需要调用
super.onTouchEvent()
@Override
public boolean onTouchEvent(MotionEvent motionEvent)
{
if(this.gestureDetector.onTouchEvent(motionEvent))
{
return true;
}
//no gesture detected, let Activity handle touch event
return super.onTouchEvent(motionEvent);
}
当代码没有执行任何操作时,您可以返回false…它将让运动事件系统自行管理所有内容。
返回true,当您要停止要发送到其他孩子视图的事件时。请注意此函数:
@Override
public boolean onDown(MotionEvent e)
{
// Intentionally not handling - must be overridden by listener class
// Intentionally returning true - per code examples
return true;
}
请将返回值更改为false。@CodeFusionMbile-感谢您的建议。我刚刚尝试使用上面的代码更新onTouchEvent,但它对我看到的行为没有任何影响。我在每个手势事件中添加了一个日志以确保。当我尝试在屏幕上滑动时,我会看到结果中的日志,但我没有看到其他任何日志。
imageView.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
if (mDetector.onTouchEvent(event)) {
return true;
}
return HomeScreen.super.onTouchEvent(event);
}
});
public class JGestureDetector extends GestureDetector.SimpleOnGestureListener {
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 SwipeHandler handler;
public SwipeHandler getHandler() {
return handler;
}
public void setHandler(SwipeHandler handler) {
this.handler = handler;
}
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
if (Math.abs(e1.getY() - e2.getY()) > SWIPE_MAX_OFF_PATH)
return false;
// left
if (e1.getX() - e2.getX() > SWIPE_MIN_DISTANCE
&& Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) {
if (handler != null) {
handler.onLeft();
return true;
}
// right
} else if (e2.getX() - e1.getX() > SWIPE_MIN_DISTANCE
&& Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) {
if (handler != null) {
handler.onRight();
return true;
}
}
return super.onFling(e1, e2, velocityX, velocityY);
}
public static abstract class SwipeHandler {
public void onLeft() {
}
public void onRight() {
}
}
}