package com.marshalchen.common.demoofui.appintroexample.animations;
import android.content.Intent;
import android.os.Bundle;
import android.support.v4.view.ViewPager;
import android.view.View;
import android.widget.Toast;
import com.github.paolorotolo.appintro.AppIntro;
import com.marshalchen.common.demoofui.appintroexample.AppintroActivity;
import com.marshalchen.common.demoofui.appintroexample.slides.FourthSlide;
import com.marshalchen.common.demoofui.appintroexample.slides.SecondSlide;
import com.marshalchen.common.demoofui.appintroexample.slides.ThirdSlide;
import com.marshalchen.common.demoofui.appintroexample.slides.FirstSlide;
public class CustomAnimation extends AppIntro {
@Override
public void init(Bundle savedInstanceState) {
addSlide(new FirstSlide(), getApplicationContext());
addSlide(new SecondSlide(), getApplicationContext());
addSlide(new ThirdSlide(), getApplicationContext());
addSlide(new FourthSlide(), getApplicationContext());
setCustomTransformer(new ZoomOutPageTransformer());
}
private void loadMainActivity(){
Intent intent = new Intent(this, AppintroActivity.class);
startActivity(intent);
}
@Override
public void onSkipPressed() {
loadMainActivity();
Toast.makeText(getApplicationContext(), "skip", Toast.LENGTH_SHORT).show();
}
@Override
public void onDonePressed() {
loadMainActivity();
}
public void getStarted(View v){
loadMainActivity();
}
public class ZoomOutPageTransformer implements ViewPager.PageTransformer {
private static final float MIN_SCALE = 0.85f;
private static final float MIN_ALPHA = 0.5f;
public void transformPage(View view, float position) {
int pageWidth = view.getWidth();
int pageHeight = view.getHeight();
if (position < -1) { // [-Infinity,-1)
// This page is way off-screen to the left.
view.setAlpha(0);
} else if (position <= 1) { // [-1,1]
// Modify the default slide transition to shrink the page as well
float scaleFactor = Math.max(MIN_SCALE, 1 - Math.abs(position));
float vertMargin = pageHeight * (1 - scaleFactor) / 2;
float horzMargin = pageWidth * (1 - scaleFactor) / 2;
if (position < 0) {
view.setTranslationX(horzMargin - vertMargin / 2);
} else {
view.setTranslationX(-horzMargin + vertMargin / 2);
}
// Scale the page down (between MIN_SCALE and 1)
view.setScaleX(scaleFactor);
view.setScaleY(scaleFactor);
// Fade the page relative to its size.
view.setAlpha(MIN_ALPHA +
(scaleFactor - MIN_SCALE) /
(1 - MIN_SCALE) * (1 - MIN_ALPHA));
} else { // (1,+Infinity]
// This page is way off-screen to the right.
view.setAlpha(0);
}
}
}
}