Java tutorial
/* * Copyright (C) 2014 IUH yber$oft Team * * 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 vn.cybersoft.obs.android.fragments; import java.lang.ref.WeakReference; import java.util.Calendar; import java.util.List; import org.achartengine.ChartFactory; import org.achartengine.GraphicalView; import org.achartengine.chart.PointStyle; import org.achartengine.model.TimeSeries; import org.achartengine.model.XYMultipleSeriesDataset; import org.achartengine.renderer.XYMultipleSeriesRenderer; import org.achartengine.renderer.XYSeriesRenderer; import vn.cybersoft.obs.android.R; import vn.cybersoft.obs.android.activities.CleanerActivity; import vn.cybersoft.obs.android.models.BatteryInfo; import vn.cybersoft.obs.android.provider.BatteryTrace; import vn.cybersoft.obs.android.utilities.DeviceUtils; import vn.cybersoft.obs.android.utilities.Log; import android.app.AlertDialog; import android.content.BroadcastReceiver; import android.content.Context; import android.content.DialogInterface; import android.content.Intent; import android.content.IntentFilter; import android.graphics.Color; import android.os.BatteryManager; import android.os.Bundle; import android.os.Handler; import android.os.Message; 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.widget.Button; import android.widget.ImageView; import android.widget.TextView; /** * @author Luan Vu * */ public class BatteryInfoFragment extends Fragment { private static final String t = BatteryInfoFragment.class.getSimpleName(); public static final int LAYOUT_ID = R.layout.battery_info_fragment; private static final int LIMIT_DATE_SHOW = 2; private static final int MINIMUM_VALUE_TO_SHOW_CHART = 4; private IncomeinHandler mHandler = new IncomeinHandler(this); private BatteryInfo mBatteryInfo; private BatteryInfoReceiver mBatteryInfoReceiver; private TextView mTemperature, mVoltage, mCapacity, mTimeLeftHour, mTimeLeftMin, mBatteryLevel; private TextView mTimeLeftText; private ImageView mBatteryImg; private Button mCleanApp; private ViewGroup mUsageChart; private XYMultipleSeriesDataset mDataset; private XYMultipleSeriesRenderer mRenderer; private GraphicalView mChartView; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); getActivity().setTitle(getString(R.string.app_name) + " > " + getString(R.string.battery_info)); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View view = inflater.inflate(LAYOUT_ID, container, false); mTimeLeftText = (TextView) view.findViewById(R.id.time_left); mTimeLeftHour = (TextView) view.findViewById(R.id.time_left_hour); mTimeLeftMin = (TextView) view.findViewById(R.id.time_left_minutes); mTemperature = (TextView) view.findViewById(R.id.temperature_text); mVoltage = (TextView) view.findViewById(R.id.voltage_text); mBatteryLevel = (TextView) view.findViewById(R.id.battery_level_text); mBatteryImg = (ImageView) view.findViewById(R.id.battery_img); mCapacity = (TextView) view.findViewById(R.id.capacity_text); mCapacity.setText(getBatteryCapacity() + ""); mBatteryInfo = new BatteryInfo(); mBatteryInfoReceiver = new BatteryInfoReceiver(); mCleanApp = (Button) view.findViewById(R.id.cleanUpButton); mCleanApp.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { cleanApp(); } }); drawChart(); mUsageChart = (ViewGroup) view.findViewById(R.id.battery_usage_chart); if (mChartView != null) { mUsageChart.addView(mChartView, 0); } else { mUsageChart.findViewById(R.id.empty_usage).setVisibility(View.VISIBLE); } return view; } private void cleanApp() { new AlertDialog.Builder(getActivity()).setTitle(getString(R.string.clean_up)) .setMessage(getString(R.string.clean_up_confirm)).setNegativeButton(android.R.string.cancel, null) .setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { public void onClick(DialogInterface d, int w) { Intent i = new Intent(getActivity(), CleanerActivity.class); startActivity(i); } }).show(); } private void drawChart() { mRenderer = new XYMultipleSeriesRenderer(); mDataset = new XYMultipleSeriesDataset(); XYSeriesRenderer renderer = new XYSeriesRenderer(); renderer.setLineWidth(5); renderer.setColor(Color.parseColor("#0099cc")); renderer.setDisplayBoundingPoints(true); renderer.setPointStyle(PointStyle.CIRCLE); renderer.setPointStrokeWidth(10); //FillOutsideLine fillOutsideLine = new FillOutsideLine(Type.BOUNDS_ALL); //fillOutsideLine.setColor(Color.parseColor("#0099cc")); //renderer.addFillOutsideLine(fillOutsideLine); //mRenderer.setChartTitle("Battery Level (%)"); mRenderer.setChartTitleTextSize(30f); mRenderer.setLabelsTextSize(20f); mRenderer.addSeriesRenderer(renderer); mRenderer.setMarginsColor(Color.argb(0x00, 0xff, 0x00, 0x00)); mRenderer.setPanEnabled(true, false); mRenderer.setZoomEnabled(false, false); mRenderer.setYAxisMax(DeviceUtils.getBatteryScale(getActivity())); mRenderer.setYAxisMin(0); //mRenderer.setShowGrid(true); mRenderer.setGridColor(Color.GRAY); mRenderer.setClickEnabled(false); TimeSeries series = new TimeSeries(""); /* long value = new Date().getTime() - 3 * TimeChart.DAY; for (int i = 0; i < 5; i++) { series.add(new Date(value + i * TimeChart.DAY / 4), i); }*/ List<BatteryTrace> traces = BatteryTrace.getClosestTraceData(getActivity().getContentResolver(), LIMIT_DATE_SHOW); boolean chartVisible = traces.size() >= MINIMUM_VALUE_TO_SHOW_CHART; if (chartVisible) { Calendar panMinimumX = Calendar.getInstance(); panMinimumX.set(Calendar.HOUR_OF_DAY, traces.get(0).hour); panMinimumX.set(Calendar.MINUTE, traces.get(0).minutes); Calendar panMaximumX = Calendar.getInstance(); panMaximumX.set(Calendar.HOUR_OF_DAY, traces.get(traces.size() - 1).hour); panMaximumX.set(Calendar.MINUTE, traces.get(traces.size() - 1).minutes); //mRenderer.setPanLimits(new double[] {panMinimumX.getTimeInMillis(), panMaximumX.getTimeInMillis() * 2, 0, 0}); for (BatteryTrace b : traces) { //System.out.println(b.toString()); Calendar c = Calendar.getInstance(); c.set(Calendar.HOUR_OF_DAY, b.hour); c.set(Calendar.MINUTE, b.minutes); series.add(c.getTime(), b.level); } mDataset.addSeries(series); mChartView = ChartFactory.getTimeChartView(getActivity(), mDataset, mRenderer, "hh:mm aa"); } } @Override public void onStart() { super.onStart(); Log.v(t + ".onStart()"); } @Override public void onResume() { super.onResume(); Log.v(t + ".onResume()"); getActivity().registerReceiver(mBatteryInfoReceiver, new IntentFilter(Intent.ACTION_BATTERY_CHANGED)); } @Override public void onPause() { super.onPause(); Log.v(t + ".onPause()"); getActivity().unregisterReceiver(mBatteryInfoReceiver); } @Override public void onStop() { super.onStop(); Log.v(t + ".onStop()"); } @Override public void onDestroyView() { super.onDestroyView(); Log.v(t + ".onDestroyView()"); } @Override public void onDestroy() { super.onDestroy(); Log.v(t + ".onDestroy()"); } private void updateLayout() { mTemperature.setText((float) mBatteryInfo.temperature / 10 + ""); mVoltage.setText((float) mBatteryInfo.voltage / 1000 + ""); int batteryPercentage = mBatteryInfo.getBatteryPercentage(); boolean isCharging = mBatteryInfo.status == BatteryManager.BATTERY_STATUS_CHARGING; mBatteryLevel.setText(batteryPercentage + "%"); if (isCharging) { mTimeLeftText.setText(getString(R.string.charging_time_left)); if (batteryPercentage <= 10) { mBatteryImg.setImageResource(R.drawable.psac0); } else if (batteryPercentage <= 25) { mBatteryImg.setImageResource(R.drawable.psac1); } else if (batteryPercentage <= 50) { mBatteryImg.setImageResource(R.drawable.psac2); } else if (batteryPercentage <= 75) { mBatteryImg.setImageResource(R.drawable.psac3); } else { mBatteryImg.setImageResource(R.drawable.psac4); } } else { mTimeLeftText.setText(getString(R.string.time_left)); if (batteryPercentage <= 10) { mBatteryImg.setImageResource(R.drawable.p1); } else if (batteryPercentage <= 25) { mBatteryImg.setImageResource(R.drawable.p2); } else if (batteryPercentage <= 50) { mBatteryImg.setImageResource(R.drawable.p3); } else if (batteryPercentage <= 75) { mBatteryImg.setImageResource(R.drawable.p4); } else { mBatteryImg.setImageResource(R.drawable.p5); } } } private class BatteryInfoReceiver extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { if (Log.LOGV) { Log.v(t + ".BatteryInfoReceiver.onReceive()"); } mBatteryInfo.status = intent.getIntExtra(BatteryManager.EXTRA_STATUS, BatteryManager.BATTERY_STATUS_UNKNOWN); mBatteryInfo.heath = intent.getIntExtra(BatteryManager.EXTRA_HEALTH, BatteryManager.BATTERY_HEALTH_UNKNOWN); mBatteryInfo.present = intent.getBooleanExtra(BatteryManager.EXTRA_PRESENT, false); mBatteryInfo.level = intent.getIntExtra(BatteryManager.EXTRA_LEVEL, 0); mBatteryInfo.scale = intent.getIntExtra(BatteryManager.EXTRA_SCALE, 100); mBatteryInfo.iconSmall = intent.getIntExtra(BatteryManager.EXTRA_ICON_SMALL, 0); mBatteryInfo.plugged = intent.getIntExtra(BatteryManager.EXTRA_PLUGGED, 0); mBatteryInfo.voltage = intent.getIntExtra(BatteryManager.EXTRA_VOLTAGE, 0); mBatteryInfo.temperature = intent.getIntExtra(BatteryManager.EXTRA_TEMPERATURE, 0); mBatteryInfo.technology = intent.getStringExtra(BatteryManager.EXTRA_TECHNOLOGY); mBatteryInfo.invalidCharger = intent.getIntExtra("invalid_charger", 0); mHandler.sendEmptyMessage(0); } } /* * Used to prevent memory leaks */ static class IncomeinHandler extends Handler { private final WeakReference<BatteryInfoFragment> mTarget; IncomeinHandler(BatteryInfoFragment target) { mTarget = new WeakReference<BatteryInfoFragment>(target); } @Override public void handleMessage(Message msg) { BatteryInfoFragment target = mTarget.get(); if (target != null) { target.updateLayout(); } } } private double getBatteryCapacity() { Object powerProfile = null; final String POWER_PROFILE_CLASS = "com.android.internal.os.PowerProfile"; try { powerProfile = Class.forName(POWER_PROFILE_CLASS).getConstructor(android.content.Context.class) .newInstance(getActivity()); } catch (Exception e) { e.printStackTrace(); } double ret = 0; try { ret = (Double) Class.forName(POWER_PROFILE_CLASS).getMethod("getBatteryCapacity").invoke(powerProfile); } catch (Exception e) { e.printStackTrace(); } return ret; } }