PagerSlidingTabStripActivity.java

/*
 * Copyright (C) 2013 Andreas Stuetz <andreas.stuetz@gmail.com>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.marshalchen.common.demoofui.pagerSlidingTabStrip;

import android.graphics.Color;
import android.graphics.drawable.ColorDrawable;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.LayerDrawable;
import android.graphics.drawable.TransitionDrawable;
import android.os.Build;
import android.os.Bundle;
import android.os.Handler;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v7.app.ActionBarActivity;
import android.support.v7.widget.Toolbar;
import android.util.TypedValue;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;

import com.astuetz.PagerSlidingTabStrip;
import com.marshalchen.common.demoofui.R;
import com.readystatesoftware.systembartint.SystemBarTintManager;

import butterknife.ButterKnife;
import butterknife.InjectView;

public class PagerSlidingTabStripActivity extends ActionBarActivity {

    private final Handler handler = new Handler();

    @InjectView(R.id.toolbar)
    Toolbar toolbar;
    @InjectView(R.id.tabs)
    PagerSlidingTabStrip tabs;
    @InjectView(R.id.pager)
    ViewPager pager;

    private MyPagerAdapter adapter;

    private Drawable oldBackground = null;
    private int currentColor;
    private SystemBarTintManager mTintManager;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.pager_sliding_tab_activity_main);
        ButterKnife.inject(this);
        setSupportActionBar(toolbar);
        // create our manager instance after the content view is set
        mTintManager = new SystemBarTintManager(this);
        // enable status bar tint
        mTintManager.setStatusBarTintEnabled(true);

        adapter = new MyPagerAdapter(getSupportFragmentManager());
        pager.setAdapter(adapter);
        tabs.setViewPager(pager);

        final int pageMargin = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 4, getResources()
                .getDisplayMetrics());
        pager.setPageMargin(pageMargin);

        changeColor(getResources().getColor(R.color.Green));
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.pager_sliding_tab, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {

        switch (item.getItemId()) {

            case R.id.action_contact:
                QuickContactFragment dialog = new QuickContactFragment();
                dialog.show(getSupportFragmentManager(), "QuickContactFragment");
                return true;

        }

        return super.onOptionsItemSelected(item);
    }

    private void changeColor(int newColor) {

        tabs.setBackgroundColor(newColor);
        mTintManager.setTintColor(newColor);
        // change ActionBar color just if an ActionBar is available

        Drawable colorDrawable = new ColorDrawable(newColor);
        Drawable bottomDrawable = new ColorDrawable(getResources().getColor(android.R.color.transparent));
        LayerDrawable ld = new LayerDrawable(new Drawable[]{colorDrawable, bottomDrawable});

        if (oldBackground == null) {
            getSupportActionBar().setBackgroundDrawable(ld);
        } else {
            TransitionDrawable td = new TransitionDrawable(new Drawable[]{oldBackground, ld});
            getSupportActionBar().setBackgroundDrawable(td);
            td.startTransition(200);
        }

        oldBackground = ld;
        currentColor = newColor;

    }

    public void onColorClicked(View v) {

        int color = Color.parseColor(v.getTag().toString());
        changeColor(color);

    }

    @Override
    protected void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
        outState.putInt("currentColor", currentColor);
    }

    @Override
    protected void onRestoreInstanceState(Bundle savedInstanceState) {
        super.onRestoreInstanceState(savedInstanceState);
        currentColor = savedInstanceState.getInt("currentColor");
        changeColor(currentColor);
    }

    public class MyPagerAdapter extends FragmentPagerAdapter {

        private final String[] TITLES = {"Categories", "Home", "Top Paid", "Top Free", "Top Grossing", "Top New Paid",
                "Top New Free", "Trending"};

        public MyPagerAdapter(FragmentManager fm) {
            super(fm);
        }

        @Override
        public CharSequence getPageTitle(int position) {
            return TITLES[position];
        }

        @Override
        public int getCount() {
            return TITLES.length;
        }

        @Override
        public Fragment getItem(int position) {
            return SuperAwesomeCardFragment.newInstance(position);
        }

    }

}