Question

你如何停用，例如if (mGoogleApiClient == null && checkGooglePlayService()) { Log.d(Utils.TAG_DEV + TAG, "Building GoogleApiClient"); mGoogleApiClient = new GoogleApiClient.Builder(this) .addConnectionCallbacks(this) .addOnConnectionFailedListener(this) .addApi(LocationServices.API) .build(); mLocationRequest.setInterval(UPDATE_INTERVAL_IN_MILLISECONDS); mLocationRequest.setFastestInterval(FASTEST_UPDATE_INTERVAL_IN_MILLISECONDS); mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY); LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder(); builder.addLocationRequest(mLocationRequest); builder.setAlwaysShow(true); mLocationSettingsRequest = builder.build(); PendingResult<LocationSettingsResult> result = LocationServices.SettingsApi.checkLocationSettings( mGoogleApiClient, mLocationSettingsRequest ); result.setResultCallback(this); }组件上的mouseReleased事件回调？

Answer 1

您可以使用enabled属性覆盖JSlider。添加鼠标侦听器时，请创建一个新的鼠标侦听器，该侦听器委派给原始侦听器，但仅在启用该属性时才启用：

import javax.swing.JSlider;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;

class MyJSlider extends JSlider
{
    private boolean isEnabled = true;

    public void setEnabled(boolean isEnabled)
    {
        this.isEnabled = isEnabled;
    }

    @Override
    public synchronized void addMouseListener(final MouseListener delegate)
    {
        super.addMouseListener(
            new MouseListener() {
                @Override
                public void mouseClicked(final MouseEvent e) {
                    delegate.mouseClicked(e);
                }

                @Override
                public void mousePressed(final MouseEvent e) {
                    delegate.mousePressed(e);
                }

                @Override
                public void mouseReleased(final MouseEvent e) {
                    if (isEnabled) {
                        delegate.mouseReleased(e);
                    }
                }

                @Override
                public void mouseEntered(final MouseEvent e) {
                    delegate.mouseEntered(e);
                }

                @Override
                public void mouseExited(final MouseEvent e) {
                    delegate.mouseExited(e);
                }
            }
        );
    }
}

Answer 2

我通常只是在对类中的本地布尔标志进行检查，然后在处理我打开或关闭的监听器的其余部分之前添加它，以确定是否应该处理监听器。

停用默认的java JSlider鼠标回调

2 个答案: