Android 使用cmwap访问互联网的办法,androidcmwap
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Android 使用cmwap访问互联网的办法,androidcmwap
<无详细内容>1.[Java]代码
//检查网络 是否正常 private boolean checkNet(){ ConnectivityManager manager = (ConnectivityManager) getSystemService(CONNECTIVITY_SERVICE); netWrokInfo = manager.getActiveNetworkInfo(); if (netWrokInfo == null || !netWrokInfo.isAvailable()) { Toast.makeText(this, "当前的网络不可用,请开启\n网络", Toast.LENGTH_LONG).show(); return false; } else if(netWrokInfo.getTypeName().equals("MOBILE")& netWrokInfo.getExt raInfo().equals("cmwap")){ Toast.makeText(this, "cmwap网络不可用,请选择cmnet网络", Toast.LENGTH_LONG).show(); return false; }else{ return true; } }
2.[Java]代码
/** Android 使用cmwap GPRS 方式联网 CMWAP和CMNET只是中国移动为其划分的两个GPRS接入方式。中国移动对CMWAP作了一定的限制,主要表现在CMWAP接入时只能访问 GPRS网络内的IP(10.*.*.*),而无法通过路由访问Internet,我们用CMWAP浏览Internet上的网页 就是通过WAP网关协议或它提供的HTTP代理服务实现的。 因此,只有满足以下两个条件的应用 才能在中国移动的CMWAP接入方式下正常工作: 1.应用程序 的网络请求基于HTTP协议。 2.应用程序 支持HTTP代理协议或WAP网关协议。 这也就是为什么我们的G1无法正常用CMWAP的原因。 一句话:CMWAP是移动限制的,理论上只能上WAP网,而CMNET可以用GPRS浏览WWW 方法一: */ URL url = new URL("http://10.0.0.172/img/baidu_logo.gif"); HttpURLConnection conn = (HttpURLConnection) url.openConnection(); conn.setRequestProperty("X-Online-Host", "www.baidu.com"); conn.setDoInput(true); conn.connect(); InputStream is = conn.getInputStream(); bitmap = BitmapFactory.decodeStream(is); is.close(); conn.disconnect();
3.[Java]代码
package org.apache.http.examp les.client; import org.apache.http.Header; import org.apache.http.HttpEntity; import org.apache.http.HttpHost; import org.apache.http.HttpResponse; import org.apache.http.client.HttpClient; import org.apache.http.client.methods.HttpGet; import org.apache.http.conn.params.ConnRoutePNames; import org.apache.http.impl.client.DefaultHttpClient; import org.apache.http.util.EntityUtils; public class ClientExecuteProxy { public static void main(String [] args)throws Exception { HttpHost proxy = new HttpHost( "10.0.0.172", 80, "http"); HttpHost target = new HttpHost("YOUR_TARGET_IP", 80, "http"); DefaultHttpClient httpclient = new DefaultHttpClient(); httpclient.getParams().setParameter(ConnRoutePNames.DEFAULT_PROXY, proxy); HttpGet req = new HttpGet("/"); System.out.println("executing request to " + target + " via " + proxy); HttpResponse rsp = httpclient.execute(target, req); HttpEntity entity = rsp.getEntity(); System.out.println("----------------------------------------"); System.out.println(rsp.getStatusLine()); Header[] headers = rsp.getAllHeaders(); for (int i = 0; i<headers.length; i++) { System.out.println(headers); } System.out.println("----------------------------------------"); if (entity != null) { System.out.println(EntityUtils.toString(entity)); } // When HttpClient instance is no longer needed, // shut down the connection manager to ensure // immediate deallocation of all system resources httpclient.getConnectionManager().shutdown(); } }
4.在Android上建立GPRS连接
private boolean openDataConnection() { // Set up data connection. DataConnection conn = DataConnection.getInstance(); if (connectMode == 0) { ret = conn.openConnection(mContext, "cmwap", "cmwap", "cmwap"); } else { ret = conn.openConnection(mContext, "cmnet", "", ""); } }
5.Android 判断网络状态
/* 在使用Android连接网络的时候,并不是每次都能连接到网络,在这个时候,我们最好是在程序启动的时候对网络的状态进行一下判断,如果没有网络则进行即时提醒用户进行设置。 要判断网络状态,首先需要有相应的权限,下面为权限代码: 即允许访问网络状态: <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"></uses-permission> 下面为判断代码: */ private boolean NetWorkStatus() { boolean netSataus = false; ConnectivityManager cwjManager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE); cwjManager.getActiveNetworkInfo(); if (cwjManager.getActiveNetworkInfo() != null) { netSataus = cwjManager.getActiveNetworkInfo().isAvailable(); } if (netSataus) { Builder b = new AlertDialog.Builder(this).setTitle("没有可用的网络") .setMessage("是否对网络进行设置?"); b.setPositiveButton("是", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int whichButton) { Intent mIntent = new Intent("/"); ComponentName comp = new ComponentName( "com.android.settings", "com.android.settings.WirelessSettings"); mIntent.setComponent(comp); mIntent.setAction("android.intent.action.VIEW"); startActivityForResult(mIntent,0); // 如果在设置完成后需要再次进行操作,可以重写操作代码,在这里不再重写 } }).setNeutralButton("否", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int whichButton) { dialog.cancel(); } }).show(); } return netSataus; } //通过上面的代码即可完成对网络状态的判断!
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