android 获取系统一些信息

public class test0304 extends Activity {    /** Called when the activity is first created. */    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);                TelephonyManager tm = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);           StringBuilder sb = new StringBuilder();           sb.append("\nDeviceId(IMEI) = " + tm.getDeviceId());           sb.append("\nDeviceSoftwareVersion = " + tm.getDeviceSoftwareVersion());           sb.append("\nLine1Number = " + tm.getLine1Number());           sb.append("\nNetworkCountryIso = " + tm.getNetworkCountryIso());           sb.append("\nNetworkOperator = " + tm.getNetworkOperator());           sb.append("\nNetworkOperatorName = " + tm.getNetworkOperatorName());           sb.append("\nNetworkType = " + tm.getNetworkType());           sb.append("\nPhoneType = " + tm.getPhoneType());           sb.append("\nSimCountryIso = " + tm.getSimCountryIso());           sb.append("\nSimOperator = " + tm.getSimOperator());           sb.append("\nSimOperatorName = " + tm.getSimOperatorName());           sb.append("\nSimSerialNumber = " + tm.getSimSerialNumber());           sb.append("\nSimState = " + tm.getSimState());           sb.append("\nSubscriberId(IMSI) = " + tm.getSubscriberId());           sb.append("\nVoiceMailNumber = " + tm.getVoiceMailNumber());           Log.e("info", sb.toString());       }}
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