Android如何获取网络连接状态(3G/Wifi)及怎样调用网络配置界面
[*]配置AndroidManifest.xml中的权限
添加:
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
注：这是Android的安全机制.
[*]调用到ConnectivityManager 类
public void testConnectivityManager()
{
ConnectivityManager connManager = (ConnectivityManager) this
.getSystemService(CONNECTIVITY_SERVICE);
// 获取代表联网状态的NetWorkInfo对象
NetworkInfo networkInfo = connManager.getActiveNetworkInfo();
// 获取当前的网络连接是否可用
if (null == networkInfo)
{
Toast.makeText(this, "当前的网络连接不可用", Toast.LENGTH_SHORT).show();
//当网络不可用时，跳转到网络设置页面
startActivityForResult(new Intent(
android.provider.Settings.ACTION_WIRELESS_SETTINGS), 1);
} else
{
boolean available = networkInfo.isAvailable();
if (available)
{
Log.i("通知", "当前的网络连接可用");
Toast.makeText(this, "当前的网络连接可用", Toast.LENGTH_SHORT).show();
} else
{
Log.i("通知", "当前的网络连接不可用");
Toast.makeText(this, "当前的网络连接不可用", Toast.LENGTH_SHORT).show();
}
}
State state = connManager.getNetworkInfo(
ConnectivityManager.TYPE_MOBILE).getState();
if (State.CONNECTED == state)
{
Log.i("通知", "GPRS网络已连接");
Toast.makeText(this, "GPRS网络已连接", Toast.LENGTH_SHORT).show();
}
state = connManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI)
.getState();
if (State.CONNECTED == state)
{
Log.i("通知", "WIFI网络已连接");
Toast.makeText(this, "WIFI网络已连接", Toast.LENGTH_SHORT).show();
}
//// 跳转到无线网络设置界面
// startActivity(new
// Intent(android.provider.Settings.ACTION_WIRELESS_SETTINGS));
//// 跳转到无限wifi网络设置界面
// startActivity(new
// Intent(android.provider.Settings.ACTION_WIFI_SETTINGS));
}
也可以：
private void testConnectivityManager()
{
ConnectivityManager conMan = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
//mobile 3G Network
State mobile = conMan.getNetworkInfo(ConnectivityManager.TYPE_MOBILE).getState();
Log.d(mobile.toString());
//wifi Network
State wifi = conMan.getNetworkInfo(ConnectivityManager.TYPE_WIFI).getState();
Log.d(wifi.toString());
//如果3G网络和wifi网络都未连接，且不是处于正在连接状态 则进入Network Setting界面 由用户配置网络连接
if(mobile==State.CONNECTED||mobile==State.CONNECTING)
return;
if(wifi==State.CONNECTED||wifi==State.CONNECTING)
return;
startActivity(new Intent(Settings.ACTION_WIRELESS_SETTINGS));//进入无线网络配置界面
//startActivity(new Intent(Settings.ACTION_WIFI_SETTINGS)); //进入手机中的wifi网络设置界面
}
页:
[1]