Android判断网络状态的代码

2019-10-22 18:26:11

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本文实例为大家分享了Android判断网络状态的具体代码，供大家参考，具体内容如下

一、权限

需要在AndroidManifest.xml 添加访问权限

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

二、判断连接状态

 /**  * 判断是否有网络连接  * @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、打开网络设置对话框

/**  * 打开系统网络设置界面  * @param context  */ public void setNetworkMethod(final Context context) {  AlertDialog.Builder builder = new AlertDialog.Builder(context);  builder.setTitle("提示信息").setMessage("未发现网络连接,是否进行设置?").setPositiveButton("设置", 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，需要判断    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、调用

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

Android,网络状态