Java tutorial
/* * Copyright 2015. Appsi Mobile * * 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.appsimobile.appsii.module.weather; import android.annotation.TargetApi; import android.app.Activity; import android.app.LoaderManager; import android.content.Context; import android.content.Loader; import android.content.SharedPreferences; import android.content.res.Resources; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.Rect; import android.graphics.drawable.BitmapDrawable; import android.graphics.drawable.ColorDrawable; import android.graphics.drawable.Drawable; import android.graphics.drawable.TransitionDrawable; import android.os.Build; import android.os.Bundle; import android.support.annotation.NonNull; import android.support.v4.graphics.ColorUtils; import android.support.v7.graphics.Palette; import android.support.v7.widget.LinearLayoutManager; import android.support.v7.widget.RecyclerView; import android.text.format.DateUtils; import android.text.format.Time; import android.util.Pair; import android.util.SparseArray; import android.view.Display; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.view.WindowManager; import android.widget.ImageView; import android.widget.TextView; import android.widget.Toast; import com.appsimobile.appsii.BitmapUtils; import com.appsimobile.appsii.BuildConfig; import com.appsimobile.appsii.DrawableStartTintPainter; import com.appsimobile.appsii.R; import com.appsimobile.appsii.dagger.AppInjector; import com.appsimobile.appsii.module.weather.loader.WeatherData; import com.appsimobile.appsii.preference.PreferenceHelper; import com.appsimobile.paintjob.PaintJob; import com.appsimobile.paintjob.ViewPainters; import com.appsimobile.util.TimeUtils; import java.io.File; import java.util.ArrayList; import java.util.Collections; import java.util.List; import java.util.Random; import javax.inject.Inject; /** * Shows the detailed weather on a single location. * Created by nick on 12/04/15. */ public class WeatherActivity extends Activity { /** * Required extra for the activity. Specifies the woe-id to show the weather from */ public static final String EXTRA_WOEID = BuildConfig.APPLICATION_ID + ".woe_id"; /** * Required extra, the time-zone of the woe-id */ public static final String EXTRA_TIME_ZONE = BuildConfig.APPLICATION_ID + ".timezone"; /** * Required extra, the unit the user set to be used for this woe-id. */ public static final String EXTRA_UNIT = BuildConfig.APPLICATION_ID + ".unit"; String mDisplayUnit; String mTimezone; ImageView mBackgroundImage; ImageView mCurrentWeatherIcon; TextView mTemperatureView; TextView mLocationView; TextView mConditionView; TextView mMinTempView; TextView mMaxTempView; TextView mFeelsLikeView; TextView mWindView; TextView mForecastHeader; Drawable mMinTempDrawable; Drawable mMaxTempDrawable; SimpleRotateDrawable mWindDrawable; RecyclerView mRecyclerView; @Inject SharedPreferences mSharedPreferences; @Inject PreferenceHelper mPreferenceHelper; @Inject BitmapUtils mBitmapUtils; @Inject WeatherUtils mWeatherUtils; @Inject WindowManager mWindowManager; View mCurrentWeatherContainer; WeatherData mWeatherData; String mWoeid; ForecastAdapter mAdapter; boolean mIsDay; Bitmap mBitmap; static void setTemperatureText(TextView textView, int temperature, String unit, String displayUnit) { Context context = textView.getContext(); WeatherUtils weatherUtils = AppInjector.provideWeatherUtils(); String text = weatherUtils.formatTemperature(context, temperature, unit, displayUnit, WeatherUtils.FLAG_TEMPERATURE_NO_UNIT); textView.setText(text); } @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); AppInjector.inject(this); if (savedInstanceState != null) { mBitmap = savedInstanceState.getParcelable("selected_image"); } String woeid = getIntent().getStringExtra(EXTRA_WOEID); if (woeid == null) { woeid = mSharedPreferences.getString(WeatherLoadingService.PREFERENCE_LAST_KNOWN_WOEID, null); } if (woeid == null) { woeid = mPreferenceHelper.getDefaultLocationWoeId(); } if (woeid == null) { // TODO: we need a default location. finish(); return; } mDisplayUnit = getIntent().getStringExtra(EXTRA_UNIT); mTimezone = getIntent().getStringExtra(EXTRA_TIME_ZONE); mWoeid = woeid; setContentView(R.layout.activity_weather_details); mBackgroundImage = (ImageView) findViewById(R.id.weather_background); mCurrentWeatherIcon = (ImageView) findViewById(R.id.current_weather); mTemperatureView = (TextView) findViewById(R.id.temperature); mLocationView = (TextView) findViewById(R.id.location); mConditionView = (TextView) findViewById(R.id.condition); mCurrentWeatherContainer = findViewById(R.id.current_weather_container); mMinTempView = (TextView) findViewById(R.id.temp_min); mMaxTempView = (TextView) findViewById(R.id.temp_max); mWindView = (TextView) findViewById(R.id.wind); mFeelsLikeView = (TextView) findViewById(R.id.feels_like); mRecyclerView = (RecyclerView) findViewById(R.id.recycler); mForecastHeader = (TextView) findViewById(R.id.forecast_header); mMinTempDrawable = mMinTempView.getCompoundDrawablesRelative()[0]; mMaxTempDrawable = mMaxTempView.getCompoundDrawablesRelative()[0]; BitmapDrawable windDrawable = (BitmapDrawable) mWindView.getCompoundDrawablesRelative()[0]; mWindDrawable = new SimpleRotateDrawable(getResources(), windDrawable.getBitmap()); mWindView.setCompoundDrawablesRelativeWithIntrinsicBounds(mWindDrawable, null, null, null); mRecyclerView.setLayoutManager(new LinearLayoutManager(this)); mAdapter = new ForecastAdapter(mDisplayUnit); mRecyclerView.setAdapter(mAdapter); getLoaderManager().initLoader(1, null, new WeatherDataLoaderCallbacks()); } @Override protected void onSaveInstanceState(@NonNull Bundle outState) { super.onSaveInstanceState(outState); outState.putParcelable("selected_image", mBitmap); } void onWeatherDataReady(WeatherData weatherData, SparseArray<WeatherUtils.ForecastInfo> forecastForDays) { if (weatherData == null) { Toast.makeText(this, "No weather info available", Toast.LENGTH_LONG).show(); finish(); return; } mWeatherData = weatherData; showDefaultImage(weatherData.nowConditionCode); int today = TimeUtils.getJulianDay(); WeatherUtils.ForecastInfo todaysForecast = forecastForDays == null ? null : forecastForDays.get(today); mAdapter.setForecast(forecastForDays); mIsDay = mWeatherUtils.isDay(mTimezone, weatherData); int icon = mWeatherUtils.getConditionCodeIconResId(weatherData.nowConditionCode, mIsDay); mCurrentWeatherIcon.setImageResource(icon); mLocationView.setText(weatherData.location); String feelsLikeTemp = mWeatherUtils.formatTemperature(this, weatherData.windChill, weatherData.unit, mDisplayUnit, WeatherUtils.FLAG_TEMPERATURE_NO_UNIT); if (todaysForecast != null) { setTemperatureText(mMinTempView, todaysForecast.tempLow, todaysForecast.unit, mDisplayUnit); setTemperatureText(mMaxTempView, todaysForecast.tempHigh, todaysForecast.unit, mDisplayUnit); } else { mMinTempView.setText("-"); mMaxTempView.setText("-"); } String wind = mWeatherUtils.formatWindSpeed(this, weatherData.windSpeed, weatherData.unit, mDisplayUnit); mWindDrawable.mAngle = weatherData.windDirection; setTemperatureText(mTemperatureView, weatherData.nowTemperature, weatherData.unit, mDisplayUnit); setTemperatureText(mTemperatureView, weatherData.nowTemperature, weatherData.unit, mDisplayUnit); setTemperatureText(mTemperatureView, weatherData.nowTemperature, weatherData.unit, mDisplayUnit); String feelsLike = getString(R.string.feels_like, feelsLikeTemp); mFeelsLikeView.setText(feelsLike); mWindView.setText(wind); mConditionView.setText(mWeatherUtils.formatConditionCode(weatherData.nowConditionCode)); } private void showDefaultImage(final int conditionCode) { final String woeid = mWoeid; final boolean isDay = mIsDay; View root = findViewById(android.R.id.content); PaintJob.Builder builder; if (mBitmap != null) { // FIXME: check why PaintJob.newBuilder(root, mBitmap) is not woring // as expected. builder = PaintJob.newBuilder(root, new PaintJob.BitmapSource() { @Override public Bitmap loadBitmapAsync() { return mBitmap; } }); } else { builder = PaintJob.newBuilder(root, new PaintJob.BitmapSource() { @Override public Bitmap loadBitmapAsync() { return loadBitmapBlocking(woeid, isDay, conditionCode); } }); } builder.paintWithSwatch(PaintJob.SWATCH_DARK_VIBRANT, ViewPainters.text(R.id.location)) .paintWithSwatch(PaintJob.SWATCH_LIGHT_MUTED, ViewPainters.title(R.id.forecast_header)) .paintWithSwatch(PaintJob.SWATCH_VIBRANT, ViewPainters.rgb(R.id.current_weather_container), ViewPainters.text(R.id.temperature, R.id.temp_min, R.id.temp_max, R.id.feels_like, R.id.wind, R.id.condition), DrawableStartTintPainter.forIds(R.id.temp_min, R.id.temp_max, R.id.wind)) .setBitmapCallback(new PaintJob.BitmapCallback() { @Override public void onBitmapLoaded(Bitmap bitmap, boolean immediate) { WeatherActivity.this.onBitmapLoaded(bitmap, immediate); } }); if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) { builder.paintWithSwatch(PaintJob.SWATCH_DARK_VIBRANT, new StatusBarTintPainter()); } PaintJob paintJob = builder.build(); paintJob.execute(500); mAdapter.setPaintJob(paintJob); } Bitmap loadBitmapBlocking(String woeid, boolean isDay, int conditionCode) { File[] files = mWeatherUtils.getCityPhotos(WeatherActivity.this, woeid); Bitmap bitmap; if (files != null) { int N = files.length; Random random = new Random(); int idx = random.nextInt(N); File file = files[idx]; WindowManager windowManager = mWindowManager; Display defaultDisplay = windowManager.getDefaultDisplay(); int dimen = Math.max(defaultDisplay.getWidth(), defaultDisplay.getHeight()); bitmap = mBitmapUtils.decodeSampledBitmapFromFile(file, dimen, dimen); return bitmap; } int resId = ImageDownloadHelper.getFallbackDrawableForConditionCode(isDay, conditionCode); return BitmapFactory.decodeResource(getResources(), resId); } void onBitmapLoaded(Bitmap bitmap, boolean immediate) { mBitmap = bitmap; showBitmap(bitmap, immediate); } void showBitmap(Bitmap bitmap, boolean isImmediate) { Drawable drawable = new BitmapDrawable(getResources(), bitmap); showDrawable(drawable, isImmediate); } void showDrawable(Drawable drawable, boolean isImmediate) { mBackgroundImage.setLayerType(View.LAYER_TYPE_SOFTWARE, null); if (isImmediate) { int w = drawable.getIntrinsicWidth(); int viewWidth = mBackgroundImage.getWidth(); float factor = viewWidth / (float) w; int h = (int) (drawable.getIntrinsicHeight() * factor); drawable.setBounds(0, 0, w, h); mBackgroundImage.setImageDrawable(drawable); } else { Drawable current = mBackgroundImage.getDrawable(); if (current == null) current = new ColorDrawable(Color.TRANSPARENT); TransitionDrawable transitionDrawable = new TransitionDrawable(new Drawable[] { current, drawable }); transitionDrawable.setCrossFadeEnabled(true); mBackgroundImage.setImageDrawable(transitionDrawable); transitionDrawable.startTransition(500); } } static class ForecastViewHolder extends RecyclerView.ViewHolder { static final Time sTime; static { sTime = new Time(Time.TIMEZONE_UTC); } final String mWeatherDisplayUnit; final ImageView mForecastImage; final TextView mTemperatureHigh; final TextView mTemperatureLow; final TextView mForecastDate; final TextView mForecastCondition; final Drawable mLowDrawable; final Drawable mHighDrawable; final WeatherUtils mWeatherUtils; PaintJob mPaintJob; public ForecastViewHolder(View itemView, String weatherDisplayUnit) { super(itemView); mWeatherDisplayUnit = weatherDisplayUnit; mForecastImage = (ImageView) itemView.findViewById(R.id.forecast_image); mTemperatureHigh = (TextView) itemView.findViewById(R.id.forecast_temperature_high); mTemperatureLow = (TextView) itemView.findViewById(R.id.forecast_temperature_low); mLowDrawable = mTemperatureLow.getCompoundDrawablesRelative()[0]; mHighDrawable = mTemperatureHigh.getCompoundDrawablesRelative()[0]; mForecastDate = (TextView) itemView.findViewById(R.id.forecast_date); mForecastCondition = (TextView) itemView.findViewById(R.id.forecast_condition); mWeatherUtils = AppInjector.provideWeatherUtils(); } public void setPaintJob(PaintJob paintJob) { mPaintJob = paintJob; mPaintJob.derive(itemView).paintWithSwatch(PaintJob.SWATCH_LIGHT_VIBRANT, ViewPainters.title(R.id.forecast_date), ViewPainters.text(R.id.forecast_temperature_high, R.id.forecast_temperature_low, R.id.forecast_condition), DrawableStartTintPainter.forIds(R.id.forecast_temperature_high, R.id.forecast_temperature_low)) .build().execute(500); } public void bind(WeatherUtils.ForecastInfo info) { Context context = itemView.getContext(); // for forecast icons always use the day icon. int iconResId = mWeatherUtils.getConditionCodeIconResId(info.conditionCode, true /* day */); mForecastImage.setImageResource(iconResId); setTemperatureText(mTemperatureHigh, info.tempHigh, info.unit, mWeatherDisplayUnit); setTemperatureText(mTemperatureLow, info.tempLow, info.unit, mWeatherDisplayUnit); mForecastCondition.setText(mWeatherUtils.formatConditionCode(info.conditionCode)); int today = TimeUtils.getJulianDay(); if (info.julianDay == today) { mForecastDate.setText(R.string.today); } else if (info.julianDay == today + 1) { mForecastDate.setText(R.string.tomorrow); } else { sTime.setJulianDay(info.julianDay); String time = DateUtils.formatDateTime(context, sTime.toMillis(false), DateUtils.FORMAT_SHOW_WEEKDAY); mForecastDate.setText(time); } } } static class ForecastAdapter extends RecyclerView.Adapter<ForecastViewHolder> { final List<WeatherUtils.ForecastInfo> mForecasts = new ArrayList<>(); final String mWeatherDisplayUnit; private PaintJob mPaintJob; // Palette.Swatch mColorSwatch; ForecastAdapter(String weatherDisplayUnit) { mWeatherDisplayUnit = weatherDisplayUnit; } @Override public ForecastViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { LayoutInflater layoutInflater = LayoutInflater.from(parent.getContext()); View view = layoutInflater.inflate(R.layout.list_item_forecast, parent, false); ForecastViewHolder result = new ForecastViewHolder(view, mWeatherDisplayUnit); result.setPaintJob(mPaintJob); return result; } @Override public void onBindViewHolder(ForecastViewHolder holder, int position) { WeatherUtils.ForecastInfo info = mForecasts.get(position); holder.bind(info); } @Override public int getItemCount() { return mForecasts.size(); } public void setForecast(SparseArray<WeatherUtils.ForecastInfo> forecastForDays) { mForecasts.clear(); int N = forecastForDays.size(); for (int i = 0; i < N; i++) { WeatherUtils.ForecastInfo forecastInfo = forecastForDays.valueAt(i); mForecasts.add(forecastInfo); } Collections.sort(mForecasts); notifyDataSetChanged(); } public void setPaintJob(PaintJob paintJob) { mPaintJob = paintJob; } } @TargetApi(Build.VERSION_CODES.LOLLIPOP) class StatusBarTintPainter extends PaintJob.BaseViewPainter { StatusBarTintPainter() { super(android.R.id.content); } @Override protected int getCurrentColorFromView(View view) { return getWindow().getStatusBarColor(); } @Override protected int getTargetColorFromSwatch(Palette.Swatch swatch) { return swatch.getRgb(); } @Override protected void applyColorToView(View view, int color) { getWindow().setStatusBarColor(color); getWindow().setNavigationBarColor(ColorUtils.setAlphaComponent(color, 64)); } } class SimpleRotateDrawable extends BitmapDrawable { int mAngle; public SimpleRotateDrawable(Resources resources, Bitmap bitmap) { super(resources, bitmap); } @Override public void draw(final Canvas canvas) { Rect bounds = getBounds(); canvas.rotate(mAngle, bounds.centerX(), bounds.centerY()); super.draw(canvas); canvas.rotate(mAngle, -bounds.centerX(), -bounds.centerY()); } } class WeatherDataLoaderCallbacks implements LoaderManager.LoaderCallbacks<Pair<WeatherData, SparseArray<WeatherUtils.ForecastInfo>>> { @Override public Loader<Pair<WeatherData, SparseArray<WeatherUtils.ForecastInfo>>> onCreateLoader(int id, Bundle args) { return new WeatherDataLoader(WeatherActivity.this, mWoeid); } @Override public void onLoadFinished(Loader<Pair<WeatherData, SparseArray<WeatherUtils.ForecastInfo>>> loader, Pair<WeatherData, SparseArray<WeatherUtils.ForecastInfo>> data) { onWeatherDataReady(data.first, data.second); } @Override public void onLoaderReset(Loader<Pair<WeatherData, SparseArray<WeatherUtils.ForecastInfo>>> loader) { } } }