獲取移動網絡的信號，一定要判斷是否插了 SIM 卡，沒插卡肯定是沒法獲取的

/** * 判斷是否包含SIM卡 * * @return 狀態 */ public static boolean hasSimCard(Context context) {TelephonyManager telMgr = (TelephonyManager)context.getSystemService(Context.TELEPHONY_SERVICE);int simState = telMgr.getSimState();boolean result = true;switch (simState) { case TelephonyManager.SIM_STATE_ABSENT: case TelephonyManager.SIM_STATE_UNKNOWN:result = false; // 沒有SIM卡break;}return result; }獲取信號強度

如果插了 SIM 卡，就可以通過下邊方法來獲取移動網絡的信號強度（單位 dBM），使用的是 TelephonyManager 來監聽

private void getMobileNetworkSignal() {if (!PhoneUtils.hasSimCard(mcontext)) { logger.info('getMobileNetworkSignal: no sim card'); return;}TelephonyManager mTelephonyManager = (TelephonyManager) BaseApplication.getAppContext().getSystemService(Context.TELEPHONY_SERVICE);if (mTelephonyManager != null) { mTelephonyManager.listen(new PhoneStateListener() {@Overridepublic void onSignalStrengthsChanged(SignalStrength signalStrength) { super.onSignalStrengthsChanged(signalStrength); int asu = signalStrength.getGsmSignalStrength(); int lastSignal = -113 + 2 * asu; if (lastSignal > 0) {mobileNetworkSignal = lastSignal + 'dBm'; } logger.info('Current mobileNetworkSignal：' + lastSignal + ' dBm');} }, PhoneStateListener.LISTEN_SIGNAL_STRENGTHS);} }

也可以添加網絡類型的判斷，來獲取是何種網絡的信號強度

int netWorkType = getNetWorkType(mContext);switch (netWorkType) { case NETWORKTYPE_WIFI:mTextView.setText('當前網絡為wifi,信號強度為：' + gsmSignalStrength);break; case NETWORKTYPE_2G:mTextView.setText('當前網絡為2G移動網絡,信號強度為：' + gsmSignalStrength);break; case NETWORKTYPE_4G:mTextView.setText('當前網絡為4G移動網絡,信號強度為：' + gsmSignalStrength);break; case NETWORKTYPE_NONE:mTextView.setText('當前沒有網絡,信號強度為：' + gsmSignalStrength);break; case -1:mTextView.setText('當前網絡錯誤,信號強度為：' + gsmSignalStrength);break;}

用到的獲取網絡類型的方法：

public static int getNetWorkType(Context context) { int mNetWorkType = -1; ConnectivityManager manager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo networkInfo = manager.getActiveNetworkInfo(); if (networkInfo != null && networkInfo.isConnected()) {String type = networkInfo.getTypeName();if (type.equalsIgnoreCase('WIFI')) { mNetWorkType = NETWORKTYPE_WIFI;} else if (type.equalsIgnoreCase('MOBILE')) { return isFastMobileNetwork(context) ? NETWORKTYPE_4G : NETWORKTYPE_2G;} } else {mNetWorkType = NETWORKTYPE_NONE;//沒有網絡 } return mNetWorkType;}/** * 判斷網絡類型 */private static boolean isFastMobileNetwork(Context context) { TelephonyManager telephonyManager = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE); if (telephonyManager.getNetworkType() == TelephonyManager.NETWORK_TYPE_LTE) {return true; } return false;}

最后添加必要權限即可

<uses-permission android:name='android.permission.INTERNET'/><uses-permission android:name='android.permission.CHANGE_NETWORK_STATE'/><uses-permission android:name='android.permission.ACCESS_WIFI_STATE'/><uses-permission android:name='android.permission.ACCESS_NETWORK_STATE'/>

以上就是Android獲取移動網絡信號強度的方法的詳細內容，更多關于Android獲取網絡信號強度的資料請關注好吧啦網其它相關文章！