Android 获取手机信号

public class MobilePhoneState {    private TelephonyManager telephonyManager;    private ServiceState mServiceState;    private SignalStrength mSignalStrength;    private int mDataState;    private MobilePhoneStateChangeListener mobilePhoneStateChangeListener;    private MobilePhoneStateListener mobilePhoneStateListener;    private MobileState mobileState;    public MobilePhoneState(Context context){        telephonyManager = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);        mobileState = new MobileState();        mobileState.dataConnect = telephonyManager.getDataState() == DATA_CONNECTED;        mobileState.dataNetType = telephonyManager.getDataNetworkType();        mobilePhoneStateListener = new MobilePhoneStateListener();        telephonyManager.listen(mobilePhoneStateListener,                PhoneStateListener.LISTEN_SERVICE_STATE                        | PhoneStateListener.LISTEN_SIGNAL_STRENGTHS                        | PhoneStateListener.LISTEN_CALL_STATE                        | PhoneStateListener.LISTEN_DATA_CONNECTION_STATE                        | PhoneStateListener.LISTEN_DATA_ACTIVITY);    }    public void setMobilePhoneStateChangeListener(MobilePhoneStateChangeListener mobilePhoneStateChangeListener) {        this.mobilePhoneStateChangeListener = mobilePhoneStateChangeListener;        mobilePhoneStateChangeListener.onMobilePhoneStateChange(mobileState.signalLevel,mobileState.dataConnect,mobileState.dataNetType);    }    public void unregister(){        if(telephonyManager != null){            telephonyManager.listen(mobilePhoneStateListener,PhoneStateListener.LISTEN_NONE);        }    }    class MobilePhoneStateListener extends PhoneStateListener {        @Override        public void onSignalStrengthsChanged(SignalStrength signalStrength) {            super.onSignalStrengthsChanged(signalStrength);            mSignalStrength = signalStrength;            updateTelephony();        }        @Override        public void onServiceStateChanged(ServiceState serviceState) {            super.onServiceStateChanged(serviceState);            mServiceState = serviceState;            updateTelephony();        }        @Override        public void onDataConnectionStateChanged(int state, int networkType) {            super.onDataConnectionStateChanged(state, networkType);            mDataState = state;            mobileState.dataNetType = networkType;            updateTelephony();        }    }    private void updateTelephony(){        boolean connected = hasService() && mSignalStrength != null;        int level = 0;        boolean dataConnect;        if(connected){            level = mSignalStrength.getLevel();        }        dataConnect = mDataState == DATA_CONNECTED;        mobileState.signalLevel = level;        mobileState.dataConnect = dataConnect;        if(mobilePhoneStateChangeListener != null){            mobilePhoneStateChangeListener.onMobilePhoneStateChange(mobileState.signalLevel,mobileState.dataConnect,mobileState.dataNetType);        }    }    private boolean hasService() {        if (mServiceState != null) {            return mServiceState.getState() == ServiceState.STATE_IN_SERVICE;        } else {            return false;        }    }    class MobileState{        public int signalLevel;        public boolean dataConnect;        public int dataNetType;    }    public interface MobilePhoneStateChangeListener{        /**         * @param signalLevel 信号强度         * @param dataConnect 连接互联网         * @param dataNetType 网络类型         * */        void onMobilePhoneStateChange(int signalLevel, boolean dataConnect, int dataNetType);    }}
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