一、AndroidR Settings 里面电池信息，显示电量百分比等，如下面的24%，那这个24%如何获取呢？
二、经过不停反复的分析，大致流程如下：
************************定时获取电池状态****************************
hardware\interfaces\health\utils\libhealthloop\HealthLoop.cpp
WakeAlarmEvent() -> PeriodicChores() ->ScheduleBatteryUpdate()
************************监测电池状态****************************
hardware\interfaces\health\utils\libhealth2impl\HalHealthLoop.cpp
ScheduleBatteryUpdate()
{
hardware\interfaces\health\utils\libhealth2impl\Health.cpp
getHealthInfo_2_1
system\core\healthd\BatteryMonitor.cpp
updateValues()
} -> this->OnHealthInfoChanged(health_info)
************************发生信息到frameworks****************************
hardware\interfaces\health\utils\libhealth2impl\BinderHealth.cpp
OnHealthInfoChanged() -> Notify(health_info)
hardware\interfaces\health\utils\libhealth2impl\include\health2impl\Callback.h
Notify(const HealthInfo& info) ->healthInfoChanged_2_1(info)
************************发送电池信息广播****************************
frameworks\base\services\core\java\com\android\server\BatteryService.java
healthInfoChanged_2_1() -> update() ->processValuesLocked(false) -> sendBatteryChangedIntentLocked() -> broadcastStickyIntent()
************************Settings接收广播,在settings里面显示电池百分比****************************
packages\apps\Settings\src\com\android\settings\fuelgauge\BatteryBroadcastReceiver.java
onReceive（）->
updateBatteryStatus(){
mBatteryListener.onBatteryChanged
}->
packages\apps\Settings\src\com\android\settings\fuelgauge\TopLevelBatteryPreferenceController.java
TopLevelBatteryPreferenceController()->updateState(mPreference)
->
packages\apps\Settings\src\com\android\settings\fuelgauge\BatteryHeaderPreferenceController.java
updateHeaderPreference()->
mBatteryPercentText.setText
三、添加显示电池温度的功能
1、涉及修改的文件
2、涉及修改的文件内容如下
project frameworks/base/
diff --git a/services/core/java/com/android/server/BatteryService.java b/services/core/java/com/android/server/BatteryService.java
old mode 100644
new mode 100755
index 5cb52f7..17125d7
--- a/services/core/java/com/android/server/BatteryService.java
+++ b/services/core/java/com/android/server/BatteryService.java
@@ -118,7 +118,7 @@ import java.util.concurrent.atomic.AtomicReference;
public final class BatteryService extends SystemService {
private static final String TAG = BatteryService.class.getSimpleName();
- private static final boolean DEBUG = false;
+ private static final boolean DEBUG = true;
private static final int BATTERY_SCALE = 100; // battery capacity is a percentage
@@ -146,6 +146,7 @@ public final class BatteryService extends SystemService {
private final Object mLock = new Object();
private HealthInfo mHealthInfo;
+ private int batteryLevel_number=28;
private final HealthInfo mLastHealthInfo = new HealthInfo();
private android.hardware.health.V2_1.HealthInfo mHealthInfo2p1;
private boolean mBatteryLevelCritical;
@@ -324,6 +325,7 @@ public final class BatteryService extends SystemService {
}
mLowBatteryCloseWarningLevel = mLowBatteryWarningLevel + mContext.getResources().getInteger(
com.android.internal.R.integer.config_lowBatteryCloseWarningBump);
+ Slog.d(TAG, "updateBatteryWarningLevelLocked 1111 ");
processValuesLocked(true);
}
@@ -446,8 +448,13 @@ public final class BatteryService extends SystemService {
synchronized (mLock) {
if (!mUpdatesStopped) {
mHealthInfo = info.legacy.legacy;
+ batteryLevel_number++;
+ // if(batteryLevel_number >80)
+ // batteryLevel_number=28;
+ //mHealthInfo.batteryLevel = batteryLevel_number;
mHealthInfo2p1 = info;
// Process the new values.
+ Slog.d(TAG, "update processValuesLocked");
processValuesLocked(false);
mLock.notifyAll(); // for any waiters on new info
} else {
@@ -494,7 +501,7 @@ public final class BatteryService extends SystemService {
}
if (DEBUG) {
- Slog.d(TAG, "Processing new values: "
+ Slog.d(TAG, "Processing new values:$$% "
+ "info=" + mHealthInfo
+ ", mBatteryLevelCritical=" + mBatteryLevelCritical
+ ", mPlugType=" + mPlugType);
@@ -508,7 +515,6 @@ public final class BatteryService extends SystemService {
mHealthInfo.batteryFullCharge,
mHealthInfo2p1.batteryChargeTimeToFullNowSeconds);
} catch (RemoteException e) {
- // Should never happen.
}
shutdownIfNoPowerLocked();
@@ -670,8 +676,8 @@ public final class BatteryService extends SystemService {
// them will get the new sequence number at that point. (See for example how testing
// of JobScheduler's BatteryController works.)
sendBatteryChangedIntentLocked();
- if (mLastBatteryLevel != mHealthInfo.batteryLevel || mLastPlugType != mPlugType) {
- sendBatteryLevelChangedIntentLocked();
+ if (mLastBatteryLevel != mHealthInfo.batteryLevel || mLastBatteryTemperature != mHealthInfo.batteryTemperature || mLastPlugType != mPlugType) {
+ //sendBatteryLevelChangedIntentLocked();
}
@@ -770,6 +776,7 @@ public final class BatteryService extends SystemService {
final Intent intent = new Intent(Intent.ACTION_BATTERY_LEVEL_CHANGED);
intent.addFlags(Intent.FLAG_RECEIVER_INCLUDE_BACKGROUND);
intent.putParcelableArrayListExtra(BatteryManager.EXTRA_EVENTS, events);
+ Slog.e(TAG, "sendEnqueuedBatteryLevelChangedEvents uuuuuuuuuuu");
mContext.sendBroadcastAsUser(intent, UserHandle.ALL,
android.Manifest.permission.BATTERY_STATS);
@@ -1015,6 +1022,7 @@ public final class BatteryService extends SystemService {
}
private void processValuesFromShellLocked(PrintWriter pw, int opts) {
+ Slog.d(TAG, "processValuesFromShellLocked 00000 ");
processValuesLocked((opts & OPTION_FORCE_UPDATE) != 0);
if ((opts & OPTION_FORCE_UPDATE) != 0) {
pw.println(mSequence);
@@ -1160,6 +1168,7 @@ public final class BatteryService extends SystemService {
}
@Override public void healthInfoChanged_2_1(android.hardware.health.V2_1.HealthInfo props) {
+ Slog.d(TAG, "healthInfoChanged_2_1 -> update");
BatteryService.this.update(props);
}
project hardware/interfaces/
diff --git a/health/utils/libhealth2impl/BinderHealth.cpp b/health/utils/libhealth2impl/BinderHealth.cpp
old mode 100644
new mode 100755
index 625d0e0..395f9fc
--- a/health/utils/libhealth2impl/BinderHealth.cpp
+++ b/health/utils/libhealth2impl/BinderHealth.cpp
@@ -76,6 +76,7 @@ Return<Result> BinderHealth::registerCallback(const sp<V2_0::IHealthInfoCallback
LOG(ERROR) << "Cannot call getHealthInfo_2_1: " << toString(res);
return;
}
+ LOG(ERROR) << "BinderHealth" << "registerCallback Notify";
auto ret = wrapped->Notify(health_info);
if (IsDeadObjectLogged(ret)) {
// Remove callback reference.
@@ -119,6 +120,7 @@ Return<Result> BinderHealth::update() {
result = res;
return;
}
+ LOG(ERROR) << "BinderHealth" << " update";
OnHealthInfoChanged(health_info);
});
return result;
@@ -132,6 +134,7 @@ void BinderHealth::OnHealthInfoChanged(const HealthInfo& health_info) {
// Notify all callbacks
std::unique_lock<decltype(callbacks_lock_)> lock(callbacks_lock_);
for (auto it = callbacks_.begin(); it != callbacks_.end();) {
+ LOG(ERROR) << "BinderHealth" << " OnHealthInfoChanged Notify";
auto ret = (*it)->Notify(health_info);
if (IsDeadObjectLogged(ret)) {
it = callbacks_.erase(it);
diff --git a/health/utils/libhealth2impl/HalHealthLoop.cpp b/health/utils/libhealth2impl/HalHealthLoop.cpp
old mode 100644
new mode 100755
index 3901a76..80b5114
--- a/health/utils/libhealth2impl/HalHealthLoop.cpp
+++ b/health/utils/libhealth2impl/HalHealthLoop.cpp
@@ -59,6 +59,7 @@ void HalHealthLoop::Heartbeat(void) {
void HalHealthLoop::ScheduleBatteryUpdate() {
// ignore errors. impl may not be able to handle any callbacks, so
// update() may return errors.
+ LOG(ERROR) << "HalHealthLoop" << " ScheduleBatteryUpdate service_->update";
Result res = service_->update();
if (res != Result::SUCCESS) {
LOG(WARNING) << "update() on the health HAL implementation failed with " << toString(res);
@@ -68,6 +69,8 @@ void HalHealthLoop::ScheduleBatteryUpdate() {
CHECK(res == Result::SUCCESS)
<< "getHealthInfo_2_1() on the health HAL implementation failed with "
<< toString(res);
+
+ LOG(ERROR) << "HalHealthLoop" << " ScheduleBatteryUpdate OnHealthInfoChanged";
this->OnHealthInfoChanged(health_info);
});
}
diff --git a/health/utils/libhealth2impl/Health.cpp b/health/utils/libhealth2impl/Health.cpp
old mode 100644
new mode 100755
index f4684ae..25151f6
--- a/health/utils/libhealth2impl/Health.cpp
+++ b/health/utils/libhealth2impl/Health.cpp
@@ -80,6 +80,7 @@ Return<Result> Health::unregisterCallback(const sp<V2_0::IHealthInfoCallback>&)
Return<Result> Health::update() {
Result result = Result::UNKNOWN;
+ LOG(ERROR) << "Health::update getHealthInfo_2_1 logValues";
getHealthInfo_2_1([&](auto res, const auto& /* health_info */) {
result = res;
if (res != Result::SUCCESS) {
diff --git a/health/utils/libhealthloop/HealthLoop.cpp b/health/utils/libhealthloop/HealthLoop.cpp
old mode 100644
new mode 100755
index 3f4b5bc..6dcb9e4
--- a/health/utils/libhealthloop/HealthLoop.cpp
+++ b/health/utils/libhealthloop/HealthLoop.cpp
@@ -176,7 +176,7 @@ void HealthLoop::WakeAlarmEvent(uint32_t /*epevents*/) {
KLOG_ERROR(LOG_TAG, "wakealarm_event: read wakealarm fd failed\n");
return;
}
-
+ KLOG_ERROR(LOG_TAG, "WakeAlarmEvent PeriodicChores\n");
PeriodicChores();
}
diff --git a/health/utils/libhealthloop/utils.cpp b/health/utils/libhealthloop/utils.cpp
old mode 100644
new mode 100755
index cd8c7a9..9357198
--- a/health/utils/libhealthloop/utils.cpp
+++ b/health/utils/libhealthloop/utils.cpp
@@ -20,7 +20,7 @@ namespace hardware {
namespace health {
// Periodic chores fast interval in seconds
-#define DEFAULT_PERIODIC_CHORES_INTERVAL_FAST (60 * 1)
+#define DEFAULT_PERIODIC_CHORES_INTERVAL_FAST (5 * 1)
// Periodic chores fast interval in seconds
#define DEFAULT_PERIODIC_CHORES_INTERVAL_SLOW (60 * 10)
project packages/apps/Settings/
diff --git a/src/com/android/settings/fuelgauge/BatteryBroadcastReceiver.java b/src/com/android/settings/fuelgauge/BatteryBroadcastReceiver.java
old mode 100644
new mode 100755
index 71e65bf..47f5fc4
--- a/src/com/android/settings/fuelgauge/BatteryBroadcastReceiver.java
+++ b/src/com/android/settings/fuelgauge/BatteryBroadcastReceiver.java
@@ -75,6 +75,7 @@ public class BatteryBroadcastReceiver extends BroadcastReceiver {
@VisibleForTesting
String mBatteryLevel;
+ int mBatterytemperature;
@VisibleForTesting
String mBatteryStatus;
@VisibleForTesting
@@ -88,6 +89,7 @@ public class BatteryBroadcastReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
+ Log.e(TAG, "onReceive updateBatteryStatus ");
updateBatteryStatus(intent, false /* forceUpdate */);
}
@@ -112,9 +114,15 @@ public class BatteryBroadcastReceiver extends BroadcastReceiver {
if (intent != null && mBatteryListener != null) {
if (Intent.ACTION_BATTERY_CHANGED.equals(intent.getAction())) {
final String batteryLevel = Utils.getBatteryPercentage(intent);
+ final int batterytemperature = intent.getIntExtra(
+ BatteryManager.EXTRA_TEMPERATURE, 0);//EXTRA_TEMPERATURE
final String batteryStatus = Utils.getBatteryStatus(mContext, intent);
final int batteryHealth = intent.getIntExtra(
BatteryManager.EXTRA_HEALTH, BatteryManager.BATTERY_HEALTH_UNKNOWN);
+
+
+ Log.e(TAG, "onReceive updateBatteryStatus batterytemperature="+batterytemperature+" mBatterytemperature="+mBatterytemperature);
+
if (!Utils.isBatteryPresent(intent)) {
Log.w(TAG, "Problem reading the battery meter.");
mBatteryListener.onBatteryChanged(BatteryUpdateType.BATTERY_NOT_PRESENT);
@@ -122,12 +130,15 @@ public class BatteryBroadcastReceiver extends BroadcastReceiver {
mBatteryListener.onBatteryChanged(BatteryUpdateType.MANUAL);
} else if (batteryHealth != mBatteryHealth) {
mBatteryListener.onBatteryChanged(BatteryUpdateType.BATTERY_HEALTH);
- } else if(!batteryLevel.equals(mBatteryLevel)) {
+ } else if(!batteryLevel.equals(mBatteryLevel) || batterytemperature !=mBatterytemperature) {
mBatteryListener.onBatteryChanged(BatteryUpdateType.BATTERY_LEVEL);
+ Log.e(TAG, "mBatteryListener.onBatteryChanged 9666 ");
+
} else if (!batteryStatus.equals(mBatteryStatus)) {
mBatteryListener.onBatteryChanged(BatteryUpdateType.BATTERY_STATUS);
}
mBatteryLevel = batteryLevel;
+ mBatterytemperature = batterytemperature;
mBatteryStatus = batteryStatus;
mBatteryHealth = batteryHealth;
} else if (PowerManager.ACTION_POWER_SAVE_MODE_CHANGED.equals(intent.getAction())) {
diff --git a/src/com/android/settings/fuelgauge/BatteryHeaderPreferenceController.java b/src/com/android/settings/fuelgauge/BatteryHeaderPreferenceController.java
old mode 100644
new mode 100755
index 11d7564..173abbf
--- a/src/com/android/settings/fuelgauge/BatteryHeaderPreferenceController.java
+++ b/src/com/android/settings/fuelgauge/BatteryHeaderPreferenceController.java
@@ -47,6 +47,7 @@ import com.android.settingslib.core.lifecycle.Lifecycle;
import com.android.settingslib.core.lifecycle.LifecycleObserver;
import com.android.settingslib.core.lifecycle.events.OnStart;
import com.android.settingslib.widget.LayoutPreference;
+import android.util.Slog;
/**
* Controller that update the battery header view
@@ -57,6 +58,7 @@ public class BatteryHeaderPreferenceController extends BasePreferenceController
@VisibleForTesting
static final String KEY_BATTERY_HEADER = "battery_header";
private static final String ANNOTATION_URL = "url";
+ private String TAG = "BatteryHeaderPreferenceController";
@VisibleForTesting
BatteryStatusFeatureProvider mBatteryStatusFeatureProvider;
@@ -133,7 +135,8 @@ public class BatteryHeaderPreferenceController extends BasePreferenceController
}
public void updateHeaderPreference(BatteryInfo info) {
- mBatteryPercentText.setText(formatBatteryPercentageText(info.batteryLevel));
+ Slog.e(TAG, "updateHeaderPreference setText!");
+ mBatteryPercentText.setText(formatBatteryPercentageText(info.batteryLevel)+ " "+info.batteryTemperature+"℃");//000000
if (!mBatteryStatusFeatureProvider.triggerBatteryStatusUpdate(this, info)) {
mSummary1.setText(generateLabel(info));
}
@@ -154,6 +157,7 @@ public class BatteryHeaderPreferenceController extends BasePreferenceController
Intent batteryBroadcast = mContext.registerReceiver(null,
new IntentFilter(Intent.ACTION_BATTERY_CHANGED));
final int batteryLevel = Utils.getBatteryLevel(batteryBroadcast);
+ final int batteryTemperature = batteryBroadcast.getIntExtra(BatteryManager.EXTRA_TEMPERATURE, 0);
final boolean discharging =
batteryBroadcast.getIntExtra(BatteryManager.EXTRA_PLUGGED, -1) == 0;
@@ -161,7 +165,9 @@ public class BatteryHeaderPreferenceController extends BasePreferenceController
mBatteryMeterView.setBatteryLevel(batteryLevel);
mBatteryMeterView.setCharging(!discharging);
mBatteryMeterView.setPowerSave(mPowerManager.isPowerSaveMode());
- mBatteryPercentText.setText(formatBatteryPercentageText(batteryLevel));
+ Slog.e(TAG, "quickUpdateHeaderPreference setText!");
+ //mBatteryPercentText.setText(formatBatteryPercentageText(batteryLevel));
+ mBatteryPercentText.setText(formatBatteryPercentageText(batteryLevel)+ " "+batteryTemperature+"℃");
}
@VisibleForTesting
diff --git a/src/com/android/settings/fuelgauge/BatteryInfo.java b/src/com/android/settings/fuelgauge/BatteryInfo.java
old mode 100644
new mode 100755
index 49bdcbb..93e097c
--- a/src/com/android/settings/fuelgauge/BatteryInfo.java
+++ b/src/com/android/settings/fuelgauge/BatteryInfo.java
@@ -44,6 +44,7 @@ public class BatteryInfo {
public CharSequence chargeLabel;
public CharSequence remainingLabel;
public int batteryLevel;
+ public int batteryTemperature;
public boolean discharging = true;
public boolean isOverheated;
public long remainingTimeUs = 0;
@@ -230,6 +231,7 @@ public class BatteryInfo {
BatteryInfo info = new BatteryInfo();
info.mStats = stats;
info.batteryLevel = Utils.getBatteryLevel(batteryBroadcast);
+ info.batteryTemperature = batteryBroadcast.getIntExtra(BatteryManager.EXTRA_TEMPERATURE, 0);
info.batteryPercentString = Utils.formatPercentage(info.batteryLevel);
info.mCharging = batteryBroadcast.getIntExtra(BatteryManager.EXTRA_PLUGGED, 0) != 0;
info.averageTimeToDischarge = estimate.getAverageDischargeTime();
diff --git a/src/com/android/settings/fuelgauge/PowerUsageSummary.java b/src/com/android/settings/fuelgauge/PowerUsageSummary.java
old mode 100644
new mode 100755
index 57949db..e251274
--- a/src/com/android/settings/fuelgauge/PowerUsageSummary.java
+++ b/src/com/android/settings/fuelgauge/PowerUsageSummary.java
@@ -52,6 +52,7 @@ import com.android.settingslib.search.SearchIndexable;
import com.android.settingslib.utils.PowerUtil;
import com.android.settingslib.utils.StringUtil;
import com.android.settingslib.widget.LayoutPreference;
+import android.util.Slog;
import java.util.List;
@@ -117,6 +118,7 @@ public class PowerUsageSummary extends PowerUsageBase implements OnLongClickList
@Override
public void onLoadFinished(Loader<BatteryInfo> loader, BatteryInfo batteryInfo) {
+ Slog.e("BatteryInfo", " onLoadFinished updateHeaderPreference");
mBatteryHeaderPreferenceController.updateHeaderPreference(batteryInfo);
mBatteryInfo = batteryInfo;
updateLastFullChargePreference();
@@ -389,6 +391,7 @@ public class PowerUsageSummary extends PowerUsageBase implements OnLongClickList
super.restartBatteryStatsLoader(refreshType);
// Update battery header if battery is present.
if (mIsBatteryPresent) {
+ Slog.e("BatteryInfo", "restartBatteryStatsLoader quickUpdateHeaderPreference");
mBatteryHeaderPreferenceController.quickUpdateHeaderPreference();
}
}
3、查看更新电池信息时候的log
4、电池温度在settings里面有显示了，欧耶
5、特别记录一下，原本sdk默认是60s 去读底层更新一下电池信息，我嫌太慢，这里为了方便测试，改为5s 更新一次，修改的代码在
hardware\interfaces\health\utils\libhealthloop\utils.cpp
