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); } } });

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。