com.hfs.materialhome.DetailActivity.java Source code

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Here is the source code for com.hfs.materialhome.DetailActivity.java

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/*
 * Copyright (C) 2015 Antonio Leiva
 *
 * 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.hfs.materialhome;

import android.content.Intent;
import android.content.res.ColorStateList;
import android.graphics.Bitmap;
import android.graphics.drawable.BitmapDrawable;
import android.os.Build;
import android.os.Bundle;
import android.support.design.widget.CollapsingToolbarLayout;
import android.support.design.widget.FloatingActionButton;
import android.support.v4.app.ActivityCompat;
import android.support.v4.app.ActivityOptionsCompat;
import android.support.v4.view.ViewCompat;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.graphics.Palette;
import android.support.v7.widget.Toolbar;
import android.transition.Slide;
import android.view.MotionEvent;
import android.view.View;
import android.widget.ImageView;
import android.widget.TextView;

import com.hfs.materialhome.widgets.ExpandableTextView;
import com.squareup.picasso.Callback;
import com.squareup.picasso.Picasso;

public class DetailActivity extends AppCompatActivity {

    private static final String EXTRA_IMAGE = "com.antonioleiva.materializeyourapp.extraImage";
    private static final String EXTRA_TITLE = "com.antonioleiva.materializeyourapp.extraTitle";
    private CollapsingToolbarLayout collapsingToolbarLayout;
    private ExpandableTextView mExpandableTextView;

    public static void navigate(AppCompatActivity activity, View transitionImage, ViewModel viewModel) {
        Intent intent = new Intent(activity, DetailActivity.class);
        intent.putExtra(EXTRA_IMAGE, viewModel.getImage());
        intent.putExtra(EXTRA_TITLE, viewModel.getText());

        ActivityOptionsCompat options = ActivityOptionsCompat.makeSceneTransitionAnimation(activity,
                transitionImage, EXTRA_IMAGE);
        ActivityCompat.startActivity(activity, intent, options.toBundle());
    }

    @SuppressWarnings("ConstantConditions")
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        initActivityTransitions();
        setContentView(R.layout.activity_detail);

        ViewCompat.setTransitionName(findViewById(R.id.app_bar_layout), EXTRA_IMAGE);
        supportPostponeEnterTransition();

        setSupportActionBar((Toolbar) findViewById(R.id.toolbar));
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);

        String itemTitle = getIntent().getStringExtra(EXTRA_TITLE);
        collapsingToolbarLayout = (CollapsingToolbarLayout) findViewById(R.id.collapsing_toolbar);
        collapsingToolbarLayout.setTitle(itemTitle);
        collapsingToolbarLayout.setExpandedTitleColor(getResources().getColor(android.R.color.transparent));

        mExpandableTextView = (ExpandableTextView) findViewById(R.id.description);
        mExpandableTextView.setText(getResources().getString(R.string.lorem_ipsum));

        final ImageView image = (ImageView) findViewById(R.id.image);
        Picasso.with(this).load(getIntent().getStringExtra(EXTRA_IMAGE)).into(image, new Callback() {
            @Override
            public void onSuccess() {
                Bitmap bitmap = ((BitmapDrawable) image.getDrawable()).getBitmap();
                Palette.from(bitmap).generate(new Palette.PaletteAsyncListener() {
                    public void onGenerated(Palette palette) {
                        applyPalette(palette);
                    }
                });
            }

            @Override
            public void onError() {

            }
        });

        TextView title = (TextView) findViewById(R.id.title);
        title.setText(itemTitle);
    }

    @Override
    public boolean dispatchTouchEvent(MotionEvent motionEvent) {
        try {
            return super.dispatchTouchEvent(motionEvent);
        } catch (NullPointerException e) {
            return false;
        }
    }

    private void initActivityTransitions() {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            Slide transition = new Slide();
            transition.excludeTarget(android.R.id.statusBarBackground, true);
            getWindow().setEnterTransition(transition);
            getWindow().setReturnTransition(transition);
        }
    }

    private void applyPalette(Palette palette) {
        int primaryDark = getResources().getColor(R.color.primary_dark);
        int primary = getResources().getColor(R.color.primary);
        collapsingToolbarLayout.setContentScrimColor(palette.getMutedColor(primary));
        collapsingToolbarLayout.setStatusBarScrimColor(palette.getDarkMutedColor(primaryDark));
        updateBackground((FloatingActionButton) findViewById(R.id.fab), palette);
        supportStartPostponedEnterTransition();
    }

    private void updateBackground(FloatingActionButton fab, Palette palette) {
        int lightVibrantColor = palette.getLightVibrantColor(getResources().getColor(android.R.color.white));
        int vibrantColor = palette.getVibrantColor(getResources().getColor(R.color.accent));

        fab.setRippleColor(lightVibrantColor);
        fab.setBackgroundTintList(ColorStateList.valueOf(vibrantColor));
    }
}