package com.blakequ.bluetooth_manager_lib.scan;
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import android.annotation.TargetApi;
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import android.app.Activity;
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import android.app.Application;
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import android.content.Context;
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import android.os.Bundle;
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import com.blakequ.bluetooth_manager_lib.BleManager;
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import com.blakequ.bluetooth_manager_lib.BleParamsOptions;
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import com.blankj.utilcode.util.LogUtils;
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/**
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*
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* Simply creating an instance of this class and holding a reference to it in your Application can
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* improve battery life by 60% by slowing down scans when your app is in the background.
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*
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*/
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@TargetApi(18)
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public class BackgroundPowerSaver implements Application.ActivityLifecycleCallbacks {
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private int activeActivityCount = 0;
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private Context mContext;
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/**
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* The default duration in milliseconds of the Bluetooth scan cycle
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*/
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public static final long DEFAULT_FOREGROUND_SCAN_PERIOD = 10000;
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/**
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* The default duration in milliseconds spent not scanning between each Bluetooth scan cycle
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*/
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public static final long DEFAULT_FOREGROUND_BETWEEN_SCAN_PERIOD = 5*1000;
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/**
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* The default duration in milliseconds of the Bluetooth scan cycle when no ranging/monitoring clients are in the foreground
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*/
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public static final long DEFAULT_BACKGROUND_SCAN_PERIOD = 10000;
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/**
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* The default duration in milliseconds spent not scanning between each Bluetooth scan cycle when no ranging/monitoring clients are in the foreground
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*/
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public static final long DEFAULT_BACKGROUND_BETWEEN_SCAN_PERIOD = 5 * 60 * 1000;
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private long foregroundScanPeriod = DEFAULT_FOREGROUND_SCAN_PERIOD;
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private long foregroundBetweenScanPeriod = DEFAULT_FOREGROUND_BETWEEN_SCAN_PERIOD;
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private long backgroundScanPeriod = DEFAULT_BACKGROUND_SCAN_PERIOD;
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private long backgroundBetweenScanPeriod = DEFAULT_BACKGROUND_BETWEEN_SCAN_PERIOD;
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/**
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*
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* Constructs a new BackgroundPowerSaver
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*
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* @param context
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* @deprecated the countActiveActivityStrategy flag is no longer used.
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*
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*/
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public BackgroundPowerSaver(Context context, boolean countActiveActivityStrategy) {
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this(context);
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}
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/**
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*
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* Constructs a new BackgroundPowerSaver using the default background determination strategy
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*
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* @param context
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*/
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public BackgroundPowerSaver(Context context) {
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if (android.os.Build.VERSION.SDK_INT < 18) {
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LogUtils.w("BackgroundPowerSaver requires API 18 or higher.");
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return;
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}
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((Application)context.getApplicationContext()).registerActivityLifecycleCallbacks(this);
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this.mContext = context;
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}
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/**
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* Sets the duration in milliseconds of each Bluetooth LE scan cycle to look for beacons.
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* This function is used to setup the period when switching
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* between background/foreground. To have it effect on an already running scan (when the next
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* cycle starts), call {@link BluetoothScanManager#setBackgroundMode}
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*
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* @param p
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*/
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@Deprecated
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public void setForegroundScanPeriod(long p) {
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foregroundScanPeriod = p;
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}
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/**
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* Sets the duration in milliseconds between each Bluetooth LE scan cycle to look for beacons.
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* This function is used to setup the period when switching
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* between background/foreground. To have it effect on an already running scan (when the next
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* cycle starts), call {@link BluetoothScanManager#setBackgroundMode}
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*
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* @param p
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*/
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@Deprecated
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public void setForegroundBetweenScanPeriod(long p) {
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foregroundBetweenScanPeriod = p;
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}
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/**
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* Sets the duration in milliseconds of each Bluetooth LE scan cycle to look for beacons.
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* This function is used to setup the period when switching
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* between background/foreground. To have it effect on an already running scan (when the next
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* cycle starts), call {@link BluetoothScanManager#setBackgroundMode}
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*
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* @param p
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*/
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@Deprecated
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public void setBackgroundScanPeriod(long p) {
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backgroundScanPeriod = p;
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}
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/**
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* Sets the duration in milliseconds spent not scanning between each Bluetooth LE scan cycle when no ranging/monitoring clients are in the foreground
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*
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* @param p
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*/
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@Deprecated
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public void setBackgroundBetweenScanPeriod(long p) {
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backgroundBetweenScanPeriod = p;
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}
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public long getScanPeriod() {
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BleParamsOptions options = BleManager.getBleParamsOptions();
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if (BluetoothScanManager.getInstance(mContext).isBackgroundMode()) {
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if (options != null){
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return options.getBackgroundScanPeriod();
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}else {
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return backgroundScanPeriod;
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}
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} else {
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if (options != null){
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return options.getForegroundScanPeriod();
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}else {
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return foregroundScanPeriod;
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}
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}
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}
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public long getBetweenScanPeriod() {
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BleParamsOptions options = BleManager.getBleParamsOptions();
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if (BluetoothScanManager.getInstance(mContext).isBackgroundMode()) {
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if (options != null){
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return options.getBackgroundBetweenScanPeriod();
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}else {
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return backgroundBetweenScanPeriod;
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}
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} else {
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if (options != null){
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return options.getForegroundBetweenScanPeriod();
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}else {
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return foregroundBetweenScanPeriod;
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}
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}
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}
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@Override
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public void onActivityCreated(Activity activity, Bundle bundle) {
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}
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@Override
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public void onActivityStarted(Activity activity) {
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}
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@Override
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public void onActivityResumed(Activity activity) {
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activeActivityCount++;
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if (activeActivityCount < 1) {
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LogUtils.d("reset active activity count on resume. It was " + activeActivityCount);
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activeActivityCount = 1;
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}
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BluetoothScanManager.getInstance(mContext).setBackgroundMode(false);
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LogUtils.d("activity resumed: "+activity+" active activities: "+activeActivityCount);
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}
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@Override
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public void onActivityPaused(Activity activity) {
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activeActivityCount--;
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LogUtils.d("activity paused: "+activity+" active activities: "+activeActivityCount);
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if (activeActivityCount < 1) {
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LogUtils.d("setting background mode");
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BluetoothScanManager.getInstance(mContext).setBackgroundMode(true);
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}
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}
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@Override
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public void onActivityStopped(Activity activity) {
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}
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@Override
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public void onActivitySaveInstanceState(Activity activity, Bundle bundle) {
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}
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@Override
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public void onActivityDestroyed(Activity activity) {
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}
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}
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