Android判斷網絡狀態的代碼

2019-12-12 01:55:49

字體：大中小

來源：轉載

供稿：網友

本文實例為大家分享了Android判斷網絡狀態的具體代碼，供大家參考，具體內容如下

一、權限

需要在AndroidManifest.xml 添加訪問權限

<usespermissionandroid:name="android.permission.ACCESS_NETWORK_STATE"/><uses-permission android:name="android.permission.INTERNET"/>

二、判斷連接狀態

 /**  * 判斷是否有網絡連接  * @param context  * @return  */ public static boolean isConnect(Context context) {  boolean _isConnect = false;  ConnectivityManager conManager = (ConnectivityManager)context.getSystemService(Context.CONNECTIVITY_SERVICE);  NetworkInfo network = conManager.getActiveNetworkInfo();  if (network != null) {   _isConnect = conManager.getActiveNetworkInfo().isAvailable();  }  return _isConnect; }

三、打開網絡設置對話框

/**  * 打開系統網絡設置界面  * @param context  */ public void setNetworkMethod(final Context context) {  AlertDialog.Builder builder = new AlertDialog.Builder(context);  builder.setTitle("提示信息").setMessage("未發現網絡連接,是否進行設置?").setPositiveButton("設置", new DialogInterface.OnClickListener() {   @Override   public void onClick(DialogInterface dialog, int which) {    // TODO Auto-generated method stub    Intent intent = null;    //3.0之前和之后API不同，需要判斷    if (android.os.Build.VERSION.SDK_INT > 10) {     intent = new Intent(android.provider.Settings.ACTION_WIRELESS_SETTINGS);    } else {     intent = new Intent();     ComponentName component = new ComponentName("com.android.settings", "com.android.settings.WirelessSettings");     intent.setComponent(component);     intent.setAction("android.intent.action.VIEW");    }    context.startActivity(intent);   }  }).setNegativeButton("取消", new DialogInterface.OnClickListener() {   @Override   public void onClick(DialogInterface dialog, int which) {    // TODO Auto-generated method stub    dialog.dismiss();   }  }).show(); }

四、調用

button.setOnClickListener(new View.OnClickListener() {   @Override   public void onClick(View view) {    if (!isConnect(TwoActivity.this)){     setNetworkMethod(TwoActivity.this);    }   }  });

Android 5.0系統