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  1. importandroid.content.Context;
  2. importandroid.net.ConnectivityManager;
  3. importandroid.net.NetworkInfo;
  4. importandroid.net.Uri;
  5. importandroid.net.NetworkInfo.State;
  6. importandroid.telephony.TelephonyManager;
  7. importandroid.util.Log;
  9. publicclassNetWorkHelper{
  10. publicstaticfinalintNETWORN_NONE=0;
  11. publicstaticfinalintNETWORN_WIFI=1;
  12. publicstaticfinalintNETWORN_MOBILE=2;
  13. privatestaticStringLOG_TAG="NetWorkHelper";
  15. publicstaticUriuri=Uri.parse("content://telephony/carriers");
  17. /**
  18. *判断是否有网络
  19. */
  20. publicstaticbooleanisNetworkAvailable(Contextcontext){
  21. ConnectivityManagerconnectivity=(ConnectivityManager)context
  22. .getSystemService(Context.CONNECTIVITY_SERVICE);
  24. if(connectivity==null){
  25. Log.w(LOG_TAG,"couldn'tgetconnectivitymanager");
  26. }else{
  27. NetworkInfo[]info=connectivity.getAllNetworkInfo();
  28. if(info!=null){
  29. for(inti=0;i<info.length;i++){
  30. if(info[i].isAvailable()){
  31. Log.d(LOG_TAG,"networkisavailable");
  32. returntrue;
  33. }
  34. }
  35. }
  36. }
  37. Log.d(LOG_TAG,"networkisnotavailable");
  38. returnfalse;
  39. }
  40. /**
  41. *检查网络状态
  42. *@paramcontext
  43. *@return
  44. */
  45. publicstaticbooleancheckNetState(Contextcontext){
  46. booleannetstate=false;
  47. ConnectivityManagerconnectivity=(ConnectivityManager)context.getSystemService(Context.CONNECTIVITY_SERVICE);
  48. if(connectivity!=null)
  49. {
  50. NetworkInfo[]info=connectivity.getAllNetworkInfo();
  51. if(info!=null){
  52. for(inti=0;i<info.length;i++)
  53. {
  54. if(info[i].getState()==NetworkInfo.State.CONNECTED)
  55. {
  56. netstate=true;
  57. break;
  58. }
  59. }
  60. }
  61. }
  62. returnnetstate;
  63. }
  65. /**
  66. *判断网络是否为漫游
  67. */
  68. publicstaticbooleanisNetworkRoaming(Contextcontext){
  69. ConnectivityManagerconnectivity=(ConnectivityManager)context
  70. .getSystemService(Context.CONNECTIVITY_SERVICE);
  71. if(connectivity==null){
  72. Log.w(LOG_TAG,"couldn'tgetconnectivitymanager");
  73. }else{
  74. NetworkInfoinfo=connectivity.getActiveNetworkInfo();
  75. if(info!=null
  76. &&info.getType()==ConnectivityManager.TYPE_MOBILE){
  77. TelephonyManagertm=(TelephonyManager)context
  78. .getSystemService(Context.TELEPHONY_SERVICE);
  79. if(tm!=null&&tm.isNetworkRoaming()){
  80. Log.d(LOG_TAG,"networkisroaming");
  81. returntrue;
  82. }else{
  83. Log.d(LOG_TAG,"networkisnotroaming");
  84. }
  85. }else{
  86. Log.d(LOG_TAG,"notusingmobilenetwork");
  87. }
  88. }
  89. returnfalse;
  90. }
  92. /**
  93. *判断MOBILE网络是否可用
  94. *
  95. *@paramcontext
  96. *@return
  97. *@throwsException
  98. */
  99. publicstaticbooleanisMobileDataEnable(Contextcontext){
  100. ConnectivityManagerconnectivityManager=(ConnectivityManager)context
  101. .getSystemService(Context.CONNECTIVITY_SERVICE);
  102. booleanisMobileDataEnable=false;
  104. isMobileDataEnable=connectivityManager.getNetworkInfo(
  105. ConnectivityManager.TYPE_MOBILE).isConnectedOrConnecting();
  107. returnisMobileDataEnable;
  108. }
  111. /**
  112. *判断wifi是否可用
  113. *@paramcontext
  114. *@return
  115. *@throwsException
  116. */
  117. publicstaticbooleanisWifiDataEnable(Contextcontext){
  118. ConnectivityManagerconnectivityManager=(ConnectivityManager)context
  119. .getSystemService(Context.CONNECTIVITY_SERVICE);
  120. booleanisWifiDataEnable=false;
  121. isWifiDataEnable=connectivityManager.getNetworkInfo(
  122. ConnectivityManager.TYPE_WIFI).isConnectedOrConnecting();
  123. returnisWifiDataEnable;
  124. }
  127. publicstaticintgetNetworkState(Contextcontext){
  128. ConnectivityManagerconnManager=(ConnectivityManager)context.getSystemService(Context.CONNECTIVITY_SERVICE);
  130. //Wifi
  131. Statestate=connManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI).getState();
  132. if(state==State.CONNECTED||state==State.CONNECTING){
  133. returnNETWORN_WIFI;
  134. }
  136. //3G
  137. state=connManager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE).getState();
  138. if(state==State.CONNECTED||state==State.CONNECTING){
  139. returnNETWORN_MOBILE;
  140. }
  141. returnNETWORN_NONE;
  142. }
  144. }



转自http://blog.csdn.net/caiwenfeng_for_23/article/details/38100711

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