Java tutorial
/* * Copyright (C) 2012-2016 The Android Money Manager Ex Project Team * * 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 com.money.manager.ex.reports; import android.os.Bundle; import android.support.v4.app.Fragment; import android.support.v7.app.AppCompatActivity; import android.view.LayoutInflater; import android.view.MenuItem; import android.view.View; import android.view.ViewGroup; import android.widget.LinearLayout; import com.github.mikephil.charting.charts.BarChart; import com.github.mikephil.charting.components.Legend; import com.github.mikephil.charting.components.XAxis; import com.github.mikephil.charting.components.YAxis; import com.github.mikephil.charting.data.BarData; import com.github.mikephil.charting.data.BarDataSet; import com.github.mikephil.charting.data.BarEntry; import com.github.mikephil.charting.data.Entry; import com.github.mikephil.charting.highlight.Highlight; import com.github.mikephil.charting.interfaces.datasets.IBarDataSet; import com.github.mikephil.charting.listener.OnChartValueSelectedListener; import com.money.manager.ex.R; import com.money.manager.ex.core.UIHelper; import java.util.ArrayList; import java.util.List; public class IncomeVsExpensesChartFragment extends Fragment implements OnChartValueSelectedListener { // private static final String LOGCAT = IncomeVsExpensesChartFragment.class.getSimpleName(); public static final String KEY_EXPENSES_VALUES = "IncomeExpensesChartFragment:ExpensesValues"; public static final String KEY_INCOME_VALUES = "IncomeExpensesChartFragment:IncomeValues"; public static final String KEY_TITLE = "IncomeExpensesChartFragment:Title"; public static final String KEY_XTITLES = "IncomeExpensesChartFragment:XTitles"; public static final String KEY_SAVED_INSTANCE = "IncomeExpensesChartFragment:SavedInstance"; public static final String KEY_DISPLAY_AS_UP_ENABLED = "IncomeExpensesChartFragment:DisplayHomeAsUpEnabled"; private Bundle mArguments; private int mTextColor; private LinearLayout mLayout; private BarChart mChart; private boolean mDisplayHomeAsUpEnabled = false; public void buildChart() { String[] xVals = getChartArguments().getStringArray(KEY_XTITLES); double[] incomes = getChartArguments().getDoubleArray(KEY_INCOME_VALUES); double[] expenses = getChartArguments().getDoubleArray(KEY_EXPENSES_VALUES); ArrayList<BarEntry> yIncomes = new ArrayList<>(); ArrayList<BarEntry> yExpenses = new ArrayList<>(); for (int i = 0; i < xVals.length; i++) { yIncomes.add(new BarEntry((float) incomes[i], i)); yExpenses.add(new BarEntry((float) expenses[i], i)); } BarDataSet dataSetIncomes = new BarDataSet(yIncomes, getString(R.string.income)); BarDataSet dataSetExpenses = new BarDataSet(yExpenses, getString(R.string.expenses)); dataSetExpenses.setColor(getResources().getColor(R.color.material_red_500)); dataSetIncomes.setColor(getResources().getColor(R.color.material_green_500)); List<IBarDataSet> dataSets = new ArrayList<>(); dataSets.add(dataSetIncomes); dataSets.add(dataSetExpenses); BarData data = new BarData(xVals, dataSets); if (mTextColor != -1) data.setValueTextColor(getResources().getColor(mTextColor)); mChart.setData(data); mChart.animateXY(1500, 1500); mChart.invalidate(); Legend l = mChart.getLegend(); if (l != null && mTextColor != -1) l.setTextColor(getResources().getColor(mTextColor)); // x labels XAxis xAxis = mChart.getXAxis(); if (xAxis != null && mTextColor != -1) xAxis.setTextColor(getResources().getColor(mTextColor)); // right label YAxis yAxis = mChart.getAxisRight(); if (yAxis != null && mTextColor != -1) yAxis.setTextColor(getResources().getColor(mTextColor)); // left label yAxis = mChart.getAxisLeft(); if (yAxis != null && mTextColor != -1) yAxis.setTextColor(getResources().getColor(mTextColor)); } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); if (savedInstanceState != null) { if (savedInstanceState.containsKey(KEY_SAVED_INSTANCE)) setChartArguments(savedInstanceState.getBundle(KEY_SAVED_INSTANCE)); if (savedInstanceState.containsKey(KEY_DISPLAY_AS_UP_ENABLED)) setDisplayHomeAsUpEnabled(savedInstanceState.getBoolean(KEY_DISPLAY_AS_UP_ENABLED)); } mTextColor = new UIHelper(getActivity()).resolveAttribute(R.attr.chartTextColor); // enabled display as home // ActionBarActivity activity = (ActionBarActivity) getActivity(); AppCompatActivity activity = (AppCompatActivity) getActivity(); if (activity != null && activity.getSupportActionBar() != null) { activity.getSupportActionBar().setDisplayHomeAsUpEnabled(isDisplayHomeAsUpEnabled()); } // set has option menu setHasOptionsMenu(true); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { //return buildChart(); mLayout = (LinearLayout) inflater.inflate(R.layout.chart_bar_fragment, container, false); mChart = (BarChart) mLayout.findViewById(R.id.chartBar); mChart.setOnChartValueSelectedListener(this); mChart.setDescription(""); // mChart.setDrawBorders(true); // scaling can now only be done on x- and y-axis separately mChart.setPinchZoom(false); mChart.setDrawBarShadow(false); mChart.setDrawGridBackground(false); return mLayout; } @Override public void onResume() { super.onResume(); buildChart(); } @Override public boolean onOptionsItemSelected(MenuItem item) { if (item.getItemId() == android.R.id.home) { getActivity().onBackPressed(); return true; } return super.onOptionsItemSelected(item); } @Override public void onSaveInstanceState(Bundle outState) { super.onSaveInstanceState(outState); outState.putBundle(KEY_SAVED_INSTANCE, getChartArguments()); outState.putBoolean(KEY_DISPLAY_AS_UP_ENABLED, isDisplayHomeAsUpEnabled()); } /** * @return the mArguments */ public Bundle getChartArguments() { return mArguments; } /** * @param mArguments the mArguments to set */ public void setChartArguments(Bundle mArguments) { this.mArguments = mArguments; } /** * @return the mDisplayHomeAsUpEnabled */ public boolean isDisplayHomeAsUpEnabled() { return mDisplayHomeAsUpEnabled; } /** * @param mDisplayHomeAsUpEnabled the mDisplayHomeAsUpEnabled to set */ public void setDisplayHomeAsUpEnabled(boolean mDisplayHomeAsUpEnabled) { this.mDisplayHomeAsUpEnabled = mDisplayHomeAsUpEnabled; } @Override public void onValueSelected(Entry e, int dataSetIndex, Highlight h) { } @Override public void onNothingSelected() { } }