（三十二）工具方法：如何判断是否有网络/如何调用系统设置界面

（1）如何判断是否有网络

    /**
     * 判断是否有网络
     * @return
     */
    private boolean isNetWorkConnected(Context ctx) {
        // TODO Auto-generated method stub
        ConnectivityManager cm = (ConnectivityManager) ctx.getSystemService(CONNECTIVITY_SERVICE);
        NetworkInfo info = cm.getActiveNetworkInfo();
        Boolean result = false;
        if (info != null && info.isConnected()) {
            result = true;
        } else {
            result = false;
        }
        return result;
    }

（2）/如何调用系统设置界面

    /**
     * 
     * 方法一：进入系统设置界面
     * 
     */
    private void setSystemSetting1() {
        Intent intent = null;
          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");
            }
          startActivity(intent);
    }

/**
方法2：进入系统设置界面
*/

public void setSystemSetting2() {
// 点击网络设置按钮，进入系统设置
Intent intent = new Intent(android.provider.Settings.ACTION_SETTINGS);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);

}