org.blanco.tests.viewpager.PlainColorFragment.java Source code

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Here is the source code for org.blanco.tests.viewpager.PlainColorFragment.java

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/**
 * View Pager Test is a small application to demonstrate how to use
 * this excellent class provided by the android compatibility package
 * to swap between running parts of an application with your finger.
 * Copyright (C) 2011 Alexandro Blanco <ti3r.bubblenet@gmail.com>
 * 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 org.blanco.tests.viewpager;

import android.graphics.Color;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.AnalogClock;

public class PlainColorFragment extends Fragment {

    private static final String PLAIN_COLOR_FRAG_ARG_COLOR = "color";
    private static final String PLAIN_COLOR_FRAG_ARG_ALPHA = "alpha";

    int color = Color.GREEN;
    View view = null;
    AnalogClock clock = null;
    Bundle viewRecreateState = new Bundle();

    public static PlainColorFragment newInstance(int color) {
        PlainColorFragment frag = new PlainColorFragment();
        Bundle frag1Args = new Bundle();
        frag1Args.putInt(PLAIN_COLOR_FRAG_ARG_COLOR, color);
        frag.setArguments(frag1Args);
        frag.setRetainInstance(true);
        return frag;
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        this.color = (getArguments() != null) ? getArguments().getInt(PLAIN_COLOR_FRAG_ARG_COLOR) : Color.GRAY;
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        view = inflater.inflate(R.layout.color_layout, container, false);
        clock = (AnalogClock) view.findViewById(R.id.analogClock1);
        clock.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                vanishClock();
            }
        });
        //If bundle comes from system to recreate saved state put in property
        //to be available to restoreClockState
        if (savedInstanceState != null)
            viewRecreateState.putAll(savedInstanceState);

        restoreClockState();
        view.setBackgroundColor(color);
        return view;
    }

    @Override
    public void onDestroyView() {
        viewRecreateState.putFloat(PLAIN_COLOR_FRAG_ARG_ALPHA, clock.getAlpha());
        super.onDestroyView();
    }

    private void restoreClockState() {
        float alpha = 1.0f;
        if (viewRecreateState != null && viewRecreateState.containsKey(PLAIN_COLOR_FRAG_ARG_ALPHA))
            alpha = viewRecreateState.getFloat(PLAIN_COLOR_FRAG_ARG_ALPHA);
        clock.setAlpha(alpha);
    }

    public void startAnimationOnClock() {
        Animation anim = AnimationUtils.loadAnimation(getActivity(), android.R.anim.fade_out);
        clock.startAnimation(anim);
    }

    public void vanishClock() {
        if (clock.getAlpha() < 0.4f)
            clock.setAlpha(1.0f);
        else
            clock.setAlpha(clock.getAlpha() - .2f);
    }

    @Override
    public void onSaveInstanceState(Bundle outState) {
        outState.putFloat(PLAIN_COLOR_FRAG_ARG_ALPHA, clock.getAlpha());
        super.onSaveInstanceState(outState);
    }

}