Android 监听双卡信号强度

监听单卡信号强度

监听单卡的信号强度非常简单直接用TelephonyManager.listen()去监听sim卡的信号强度.

TelephonyManager = mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE)
mTelephonyManager.listen(new PhoneStateListener(), PhoneStateListener.LISTEN_SIGNAL_STRENGTHS);

单这只是针对单卡的时候, 现在手机基本标配双卡, 如果要监测sim卡的信号强度就要考虑到双卡, 然而百度了一下, 并没有博文去介绍怎么去监测双卡, 这下只能靠自己了.

监测sim卡1的信号强度

//SubscriptionManager  该类主要包含了所有sim卡的信息
SubscriptionManager mSubscriptionManager = SubscriptionManager.from(mContext);
//获取sim卡1的信息
SubscriptionInfo sub0 = mSubscriptionManager.getActiveSubscriptionInfoForSimSlotIndex(0);if(null != sub0) {//如果不为空 说明sim卡1存在/*sub0.getSubscriptionId() 获取sim卡1的 subId */Sim1SignalStrengthsListener mSim1SignalStrengthsListener = new Sim1SignalStrengthsListener(sub0.getSubscriptionId());//开始监听mTelephonyManager.listen(mSim1SignalStrengthsListener, PhoneStateListener.LISTEN_SIGNAL_STRENGTHS);
}

上面只是设置并开始监听, 具体去监听哪一个sim卡的, 还需要具体去看 Sim1SignalStrengthsListener 中对 subId 的具体处理

PhoneStateListener 类中有一个成员变量 mSubId , 这个值就是当前默认操作的sim卡, 如果不明确指定, 默认值就是 SubscriptionManager.DEFAULT_SUBSCRIPTION_ID, 看PhoneStateListener在有带参构造设置subId, 但是都是hide隐藏, 既然无法初始化去设置subId, 那么我们就用java强大的功能”反射”去设置mSubId的值, 设置完成之后, PhoneStateListener 就成了我们指定监测的sim卡了.

/** Subscription used to listen to the phone state changes* @hide*//** @hide */protected int mSubId = SubscriptionManager.INVALID_SUBSCRIPTION_ID;/*** Create a PhoneStateListener for the Phone with the default subscription* using a particular non-null Looper.* @hide*/public PhoneStateListener(Looper looper) {this(SubscriptionManager.DEFAULT_SUBSCRIPTION_ID, looper);}
/*** Create a PhoneStateListener for the Phone using the specified subscription* and non-null Looper.* @hide*/public PhoneStateListener(int subId, Looper looper) {...}

 public static final int DEFAULT_SUBSCRIPTION_ID = Integer.MAX_VALUE;

class Sim1SignalStrengthsListener extends PhoneStateListener {public Sim1SignalStrengthsListener(int subId) {super();ReflectUtil.setFieldValue(this, "mSubId", subId);}@Overridepublic void onSignalStrengthsChanged(SignalStrength signalStrength) {super.onSignalStrengthsChanged(signalStrength);int level = getSignalStrengthsLevel(signalStrength);}}

反射代码 ReflectUtil

public static void setFieldValue(final Object obj, final String fieldName, final Object value) {  Field field = getAccessibleField(obj, fieldName);  if (field == null) {  throw new IllegalArgumentException("Could not find field [" + fieldName + "] on target [" + obj + "]");  }  try {  field.set(obj, value);  } catch (IllegalAccessException e) {  e.printStackTrace();}
}  public static Field getAccessibleField(final Object obj, final String fieldName) {if (obj == null) {throw new IllegalArgumentException("object can't be null");
}if (fieldName == null || fieldName.length() <= 0) {
throw new IllegalArgumentException("fieldName can't be blank");
}for (Class<?> superClass = obj.getClass(); superClass != Object.class; superClass = superClass.getSuperclass()) {  try {  Field field = superClass.getDeclaredField(fieldName);  makeAccessible(field);  return field;  } catch (NoSuchFieldException e) {continue;}  }return null;
} public static void makeAccessible(Field field) {if ((!Modifier.isPublic(field.getModifiers()) ||!Modifier.isPublic(field.getDeclaringClass().getModifiers()) || Modifier.isFinal(field.getModifiers())) && !field.isAccessible()) {  field.setAccessible(true);  }
}

监测sim卡2的信号强度

获取sim卡2的信息, 其他同sim卡1

...
SubscriptionInfo sub0 = mSubscriptionManager.getActiveSubscriptionInfoForSimSlotIndex(1);
...

附完整代码

/*** 手机信号监控(双卡)* Created by zengyan on 2016/6/29.*/
public class SignalStrengthsHandler {public static final String TAG = "SignalStrengthsManager";public static final int INDEX_SIM1 = 0;public static final int INDEX_SIM2 = 1;private static SignalStrengthsHandler mInstance = null;public static byte[] mLock = new byte[0];private final Context mContext;private final TelephonyManager mTelephonyManager;private final SubscriptionManager mSubscriptionManager;private final SimStateReceive mSimStateReceiver;private SimSignalInfo mSim1SignalInfo = new SimSignalInfo();private SimSignalInfo mSim2SignalInfo = new SimSignalInfo();private ArrayList<OnSignalStrengthsChangedListener> mOnSignalStrengthsChangedListeners = null;private Sim1SignalStrengthsListener mSim1SignalStrengthsListener;private Sim2SignalStrengthsListener mSim2SignalStrengthsListener;@TargetApi(Build.VERSION_CODES.LOLLIPOP_MR1)private SignalStrengthsHandler() {mSubscriptionManager = SubscriptionManager.from(mContext);mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE);initListeners();mSimStateReceiver = new SimStateReceive();IntentFilter intentFilter = new IntentFilter();intentFilter.addAction(SimStateReceive.ACTION_SIM_STATE_CHANGED);mContext.registerReceiver(mSimStateReceiver, intentFilter);}public static SignalStrengthsHandler getInstance() {if (null == mInstance) {synchronized (mLock) {if (null == mInstance) {mInstance = new SignalStrengthsHandler();}}}return mInstance;}public void destroyInstance() {if (null != mInstance) {synchronized (mLock) {if (null != mInstance) {if (null != mOnSignalStrengthsChangedListeners) {mOnSignalStrengthsChangedListeners.clear();mOnSignalStrengthsChangedListeners = null;}mContext.unregisterReceiver(mSimStateReceiver);mInstance = null;}}}}private void initListeners() {listenSimSignalStrengths(SimCard.SIM_CARD_1);listenSimSignalStrengths(SimCard.SIM_CARD_2);}@TargetApi(Build.VERSION_CODES.LOLLIPOP_MR1)private void listenSimSignalStrengths(SimCard simCard) {if (simCard == SimCard.SIM_CARD_1) {SubscriptionInfo sub0 = mSubscriptionManager.getActiveSubscriptionInfoForSimSlotIndex(INDEX_SIM1);if (sub0 != null && null == mSim1SignalStrengthsListener) {mSim1SignalStrengthsListener = new Sim1SignalStrengthsListener(sub0.getSubscriptionId());}mTelephonyManager.listen(mSim1SignalStrengthsListener, PhoneStateListener.LISTEN_SIGNAL_STRENGTHS);} else if (simCard == SimCard.SIM_CARD_2) {SubscriptionInfo sub1 = mSubscriptionManager.getActiveSubscriptionInfoForSimSlotIndex(INDEX_SIM2);if (sub1 != null && null == mSim2SignalStrengthsListener) {mSim2SignalStrengthsListener = new Sim2SignalStrengthsListener(sub1.getSubscriptionId());}mTelephonyManager.listen(mSim2SignalStrengthsListener, PhoneStateListener.LISTEN_SIGNAL_STRENGTHS);}}private void unListenSimSignalStrengths(SimCard simCard) {if (simCard == SimCard.SIM_CARD_1) {mSim1SignalInfo.mIsActive = false;mSim1SignalInfo.mLevel = 0;if (null != mSim1SignalStrengthsListener) {mTelephonyManager.listen(mSim1SignalStrengthsListener, PhoneStateListener.LISTEN_NONE);}} else if (simCard == SimCard.SIM_CARD_2) {mSim2SignalInfo.mIsActive = false;mSim2SignalInfo.mLevel = 0;if (null != mSim2SignalStrengthsListener) {mTelephonyManager.listen(mSim2SignalStrengthsListener, PhoneStateListener.LISTEN_NONE);}}}/*** 添加监听sim卡信号强度** @param listener*/public void registerOnSignalStrengthsChangedListener(OnSignalStrengthsChangedListener listener) {if (null == mOnSignalStrengthsChangedListeners) {mOnSignalStrengthsChangedListeners = new ArrayList<>();}if (mOnSignalStrengthsChangedListeners.contains(listener)) {return;}if (null != listener) {mOnSignalStrengthsChangedListeners.add(listener);}}public void unregisterOnSignalStrengthsChangedListener(OnSignalStrengthsChangedListener listener) {if (null == mOnSignalStrengthsChangedListeners) {return;}if (null == listener) {return;}if (mOnSignalStrengthsChangedListeners.contains(listener)) {mOnSignalStrengthsChangedListeners.remove(listener);}}public void notyfyStateChange(boolean isSim1Exist, boolean isSim2Exist) {if (null != mOnSignalStrengthsChangedListeners && !mOnSignalStrengthsChangedListeners.isEmpty()) {for (int i = 0; i < mOnSignalStrengthsChangedListeners.size(); i++) {OnSignalStrengthsChangedListener listener = mOnSignalStrengthsChangedListeners.get(i);if (null != listener) {listener.onSimStateChanged(isSim1Exist, isSim2Exist);}}}}public void notifyChange(SimCard simCard, int level) {if (null != mOnSignalStrengthsChangedListeners && !mOnSignalStrengthsChangedListeners.isEmpty()) {for (int i = 0; i < mOnSignalStrengthsChangedListeners.size(); i++) {OnSignalStrengthsChangedListener listener = mOnSignalStrengthsChangedListeners.get(i);if (null != listener) {listener.onSignalStrengthsChanged(simCard, level);}}}}public boolean isSimCardExist(int cardIndex) {boolean isSimCardExist = false;try {Method method = TelephonyManager.class.getMethod("getSimState", new Class[]{int.class});int simState = (Integer) method.invoke(mTelephonyManager, new Object[]{Integer.valueOf(cardIndex)});if (TelephonyManager.SIM_STATE_READY == simState) {isSimCardExist = true;}} catch (Exception e) {e.printStackTrace();}return isSimCardExist;}/*** 获取sim信号 状态信息** @return int[]  index: 0:sim1 1:sim2*/public SimSignalInfo[] getSimSignalInfos() {return new SimSignalInfo[]{mSim1SignalInfo, mSim2SignalInfo};}private int getSignalStrengthsLevel(SignalStrength signalStrength) {int level = -1;try {Method levelMethod = SignalStrength.class.getDeclaredMethod("getLevel");level = (int) levelMethod.invoke(signalStrength);} catch (Exception e) {LogUtil.e(TAG, e.getMessage());}return level;}private class Sim1SignalStrengthsListener extends PhoneStateListener {public Sim1SignalStrengthsListener(int subId) {super();//设置当前监听的sim卡ReflectUtil.setFieldValue(this, "mSubId", subId);}@Overridepublic void onSignalStrengthsChanged(SignalStrength signalStrength) {super.onSignalStrengthsChanged(signalStrength);int level = getSignalStrengthsLevel(signalStrength);if (mSim1SignalInfo.mLevel == level) {return;}mSim1SignalInfo.mLevel = level;SignalStrengthsHandler.this.notifyChange(SimCard.SIM_CARD_1, mSim1SignalInfo.mLevel);LogUtil.d(TAG, "sim 1 signal strengths level = " + mSim1SignalInfo.mLevel);}}private class Sim2SignalStrengthsListener extends PhoneStateListener {public Sim2SignalStrengthsListener(int subId) {super();//设置当前监听的sim卡ReflectUtil.setFieldValue(this, "mSubId", subId);}@Overridepublic void onSignalStrengthsChanged(SignalStrength signalStrength) {super.onSignalStrengthsChanged(signalStrength);int level = getSignalStrengthsLevel(signalStrength);if (mSim2SignalInfo.mLevel == level) {return;}mSim2SignalInfo.mLevel = level;SignalStrengthsHandler.this.notifyChange(SimCard.SIM_CARD_2, mSim2SignalInfo.mLevel);LogUtil.d(TAG, "sim 2 signal strengths level = " + mSim2SignalInfo.mLevel);}}public interface OnSignalStrengthsChangedListener {void onSignalStrengthsChanged(SimCard simCard, int level);void onSimStateChanged(boolean isSim1Exist, boolean isSim2Exist);}public enum SimCard {SIM_CARD_1, SIM_CARD_2}@TargetApi(Build.VERSION_CODES.LOLLIPOP_MR1)class SimStateReceive extends BroadcastReceiver {private final static String ACTION_SIM_STATE_CHANGED = "android.intent.action.SIM_STATE_CHANGED";@Overridepublic void onReceive(Context context, Intent intent) {LogUtil.i("SimStateReceive", "sim state changed");if (intent.getAction().equals(ACTION_SIM_STATE_CHANGED)) {mSim1SignalInfo.mIsActive = isSimCardExist(INDEX_SIM1)&& null != mSubscriptionManager.getActiveSubscriptionInfoForSimSlotIndex(INDEX_SIM1);mSim2SignalInfo.mIsActive = isSimCardExist(INDEX_SIM2)&& null != mSubscriptionManager.getActiveSubscriptionInfoForSimSlotIndex(INDEX_SIM2);mSim1SignalInfo.mLevel = 0;mSim2SignalInfo.mLevel = 0;if (mSim1SignalInfo.mIsActive) {listenSimSignalStrengths(SimCard.SIM_CARD_1);} else {unListenSimSignalStrengths(SimCard.SIM_CARD_1);}if (mSim2SignalInfo.mIsActive) {listenSimSignalStrengths(SimCard.SIM_CARD_2);} else {unListenSimSignalStrengths(SimCard.SIM_CARD_2);}notyfyStateChange(mSim1SignalInfo.mIsActive, mSim2SignalInfo.mIsActive);}}}public class SimSignalInfo {/*** 信号强度 0 - 5*/public int mLevel;/*** sim卡是否有效*/public boolean mIsActive;}
}

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Android 监听双卡信号强度

Android 监听双卡信号强度

监听单卡信号强度

附完整代码

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