Merge "Update hashCode in CellSignalStrength classes"

am: 59fec059a9

Change-Id: I1c00ea5351b86a4554b8276b01d9439e0a362d9a

telephony/java/android/telephony/CellSignalStrengthCdma.java

@@ -20,6 +20,8 @@ import android.os.Parcel;
 import android.os.Parcelable;
 import android.telephony.Rlog;
 
+import java.util.Objects;
+
 /**
  * Signal strength related information.
  */
@@ -293,9 +295,7 @@ public final class CellSignalStrengthCdma extends CellSignalStrength implements
 
     @Override
     public int hashCode() {
-        int primeNum = 31;
-        return ((mCdmaDbm * primeNum) + (mCdmaEcio * primeNum)
-                + (mEvdoDbm * primeNum) + (mEvdoEcio * primeNum) + (mEvdoSnr * primeNum));
+        return Objects.hash(mCdmaDbm, mCdmaEcio, mEvdoDbm, mEvdoEcio, mEvdoSnr);
     }
 
     @Override

telephony/java/android/telephony/CellSignalStrengthGsm.java

@@ -20,6 +20,8 @@ import android.os.Parcel;
 import android.os.Parcelable;
 import android.telephony.Rlog;
 
+import java.util.Objects;
+
 /**
  * GSM signal strength related information.
  */
@@ -185,8 +187,7 @@ public final class CellSignalStrengthGsm extends CellSignalStrength implements P
 
     @Override
     public int hashCode() {
-        int primeNum = 31;
-        return (mSignalStrength * primeNum) + (mBitErrorRate * primeNum);
+        return Objects.hash(mSignalStrength, mBitErrorRate, mTimingAdvance);
     }
 
     @Override

telephony/java/android/telephony/CellSignalStrengthLte.java

@@ -20,6 +20,8 @@ import android.os.Parcel;
 import android.os.Parcelable;
 import android.telephony.Rlog;
 
+import java.util.Objects;
+
 /**
  * LTE signal strength related information.
  */
@@ -231,10 +233,7 @@ public final class CellSignalStrengthLte extends CellSignalStrength implements P
 
     @Override
     public int hashCode() {
-        int primeNum = 31;
-        return (mSignalStrength * primeNum) + (mRsrp * primeNum)
-                + (mRsrq * primeNum) + (mRssnr * primeNum) + (mCqi * primeNum)
-                + (mTimingAdvance * primeNum);
+        return Objects.hash(mSignalStrength, mRsrp, mRsrq, mRssnr, mCqi, mTimingAdvance);
     }
 
     @Override

telephony/java/android/telephony/CellSignalStrengthWcdma.java

@@ -20,6 +20,8 @@ import android.os.Parcel;
 import android.os.Parcelable;
 import android.telephony.Rlog;
 
+import java.util.Objects;
+
 /**
  * Wcdma signal strength related information.
  */
@@ -156,8 +158,7 @@ public final class CellSignalStrengthWcdma extends CellSignalStrength implements
 
     @Override
     public int hashCode() {
-        int primeNum = 31;
-        return (mSignalStrength * primeNum) + (mBitErrorRate * primeNum);
+        return Objects.hash(mSignalStrength, mBitErrorRate);
     }
 
     @Override