/
AutoRepeatImageView.java
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/
AutoRepeatImageView.java
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/*
<DslrDashboard - controling DSLR camera with Android phone/tablet>
Copyright (C) <2012> <Zoltan Hubai>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package com.dslr.dashboard;
import android.content.Context;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;
import android.widget.ImageView;
public class AutoRepeatImageView extends ImageView {
private long initialRepeatDelay = 500;
private long repeatIntervalInMilliseconds = 100;
private Runnable repeatClickWhileButtonHeldRunnable = new Runnable() {
public void run() {
//Perform the present repetition of the click action provided by the user
// in setOnClickListener().
performClick();
//Schedule the next repetitions of the click action, using a faster repeat
// interval than the initial repeat delay interval.
postDelayed(repeatClickWhileButtonHeldRunnable, repeatIntervalInMilliseconds);
}
};
private void commonConstructorCode() {
this.setOnTouchListener(new OnTouchListener() {
public boolean onTouch(View v, MotionEvent event) {
int action = event.getAction();
if(action == MotionEvent.ACTION_DOWN)
{
//Just to be sure that we removed all callbacks,
// which should have occurred in the ACTION_UP
removeCallbacks(repeatClickWhileButtonHeldRunnable);
//Perform the default click action.
performClick();
//Schedule the start of repetitions after a one half second delay.
postDelayed(repeatClickWhileButtonHeldRunnable, initialRepeatDelay);
}
else if(action == MotionEvent.ACTION_UP) {
//Cancel any repetition in progress.
removeCallbacks(repeatClickWhileButtonHeldRunnable);
}
//Returning true here prevents performClick() from getting called
// in the usual manner, which would be redundant, given that we are
// already calling it above.
return true;
}
});
}
public AutoRepeatImageView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
commonConstructorCode();
}
public AutoRepeatImageView(Context context, AttributeSet attrs) {
super(context, attrs);
commonConstructorCode();
}
public AutoRepeatImageView(Context context) {
super(context);
commonConstructorCode();
}
}