android5.1.1 获取当前移动信号强度

来源：互联网发布：电子科技大学软件学院编辑：程序博客网时间：2024/05/01 20:19

    ConnectivityManager mConnectivityManager;    TelephonyManager mTelephonyManager;    private final BitSet mValidatedTransports = new BitSet();    // The current user ID.    private int mCurrentUserId;    private boolean mInetCondition; // Used for Logging and demo.    private ServiceState mServiceState;    private ImageView mIvSignal;//显示信号的ImageView    static final int TELEPHONY_NO_NETWORK = R.drawable.stat_sys_signal_null;    static final int TELEPHONY_NO_SIM = R.drawable.stat_sys_no_sims;    static final int[][] SIGNAL_STRENGTH = {            { R.drawable.stat_sys_signal_0,                    R.drawable.stat_sys_signal_1,                    R.drawable.stat_sys_signal_2,                    R.drawable.stat_sys_signal_3,                    R.drawable.stat_sys_signal_4 },            { R.drawable.stat_sys_signal_0_fully,                    R.drawable.stat_sys_signal_1_fully,                    R.drawable.stat_sys_signal_2_fully,                    R.drawable.stat_sys_signal_3_fully,                    R.drawable.stat_sys_signal_4_fully }    };@Override protected void onCreate(final Bundle savedInstanceState) {        setContentView(R.layout.activity_main_lh2);        mIvSignal = (ImageView) findViewById(R.id.iv_signal);        mConnectivityManager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);        mTelephonyManager = (TelephonyManager)getSystemService(Context.TELEPHONY_SERVICE);        mTelephonyManager.listen(new PhoneStateListener(){            @Override            public void onSignalStrengthsChanged(SignalStrength signalStrength) {                super.onSignalStrengthsChanged(signalStrength);                updateConnectivity();                if (hasSimCard()) {                    if (hasService() && signalStrength != null) {                        mIvSignal.setImageResource(SIGNAL_STRENGTH[mInetCondition ? 1 : 0][signalStrength.getLevel()]);                    } else {                        mIvSignal.setImageResource(TELEPHONY_NO_NETWORK);                    }                } else {                    mIvSignal.setImageResource(TELEPHONY_NO_SIM);                }            }            @Override            public void onServiceStateChanged(ServiceState state) {                mServiceState = state;            }            @Override            public void onDataConnectionStateChanged(int state, int networkType) {            }        },                PhoneStateListener.LISTEN_SIGNAL_STRENGTHS //监测信号变化                        |PhoneStateListener.LISTEN_SERVICE_STATE //监测是否有服务                        | PhoneStateListener.LISTEN_DATA_CONNECTION_STATE //监测连接网络类型变化        );    private void updateConnectivity() {        if (mInetCondition) {            return;        }        mValidatedTransports.clear();        for (NetworkCapabilities nc :                mConnectivityManager.getDefaultNetworkCapabilitiesForUser(mCurrentUserId)) {            for (int transportType : nc.getTransportTypes()) {                if (nc.hasCapability(NET_CAPABILITY_VALIDATED)) {                    mValidatedTransports.set(transportType);                }            }        }        mInetCondition = !mValidatedTransports.isEmpty();    }    /**     * 判断是否包含SIM卡     *     * @return 状态     */    public boolean hasSimCard() {        int simState = mTelephonyManager.getSimState();        boolean result = true;        switch (simState) {            case TelephonyManager.SIM_STATE_ABSENT:                result = false; // 没有SIM卡                break;            case TelephonyManager.SIM_STATE_UNKNOWN:                result = false;                break;        }        return result;    }    private boolean hasService() {        if (mServiceState != null) {            // Consider the device to be in service if either voice or data            // service is available. Some SIM cards are marketed as data-only            // and do not support voice service, and on these SIM cards, we            // want to show signal bars for data service as well as the "no            // service" or "emergency calls only" text that indicates that voice            // is not available.            switch (mServiceState.getVoiceRegState()) {                case ServiceState.STATE_POWER_OFF:                    return false;                case ServiceState.STATE_OUT_OF_SERVICE:                case ServiceState.STATE_EMERGENCY_ONLY:                    return mServiceState.getDataRegState() == ServiceState.STATE_IN_SERVICE;                default:                    return true;            }        } else {            return false;        }    }}

//少了什么可以评论留意，我看到了就找找

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