android 解决APN问题

android4.0之后，需要系统签名，并把apk放在system/app下面

[html] view
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<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" >

</uses-permission>

<uses-permission android:name="android.permission.WRITE_APN_SETTINGS" >

</uses-permission>

<uses-permission android:name="android.permission.READ_PHONE_STATE" />

<uses-permission android:name="android.permission.MODIFY_PHONE_STATE" />

[java] view
plaincopy

package com.lenovo.testapn;

import android.app.Activity;

import android.content.ContentResolver;

import android.content.ContentValues;

import android.content.Context;

import android.database.Cursor;

import android.net.Uri;

import android.os.Bundle;

import android.telephony.TelephonyManager;

import android.util.Log;

import android.view.Menu;

public class MainActivity extends Activity {

private static final String TAG = "MainActivity";

public static final Uri APN_URI = Uri.parse("content://telephony/carriers");

// public static final Uri PREFERRED_APN_URI

// =Uri.parse("PREFERRED_APN_URI PREFERRED_APN_URI ");

public static final Uri CURRENT_APN_URI = Uri

.parse("content://telephony/carriers/preferapn");

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

Log.d(TAG, "onCreate");

checkAPN();

// SetAPN(addAPN());

}

@Override

public boolean onCreateOptionsMenu(Menu menu) {

// Inflate the menu; this adds items to the action bar if it is present.

getMenuInflater().inflate(R.menu.activity_main, menu);

return true;

}

public void checkAPN() {

// 检查当前连接的APN

Cursor cr = getContentResolver().query(APN_URI, null, null, null, null);

Log.d(TAG, "cr" + cr);

while (cr != null && cr.moveToNext()) {

// if(cr.getString(cr.getColumnIndex("_id")))

// APN id

String id = cr.getString(cr.getColumnIndex("_id"));

Log.d(TAG, "id" + id);

// String apn_id= cr.getString(cr.getColumnIndex("apn_id"));

//

// Log.d(TAG, "apn_id" + apn_id);

// APN name

String apn = cr.getString(cr.getColumnIndex("apn"));

Log.d(TAG, apn);

// Toast.makeText(getApplicationContext(),

// "当前 id:" + id + " apn:" + apn, Toast.LENGTH_LONG).show();

}

}

// 新增一个cmnet接入点

public int addAPN() {

int id = -1;

Log.d(TAG, "添加一个新的apn");

String NUMERIC = getSIMInfo();

Log.d(TAG, "NUMERIC" + NUMERIC);

if (NUMERIC == null) {

return -1;

}

ContentResolver resolver = this.getContentResolver();

ContentValues values = new ContentValues();

SIMCardInfo siminfo = new SIMCardInfo(MainActivity.this);

// String user = siminfo.getNativePhoneNumber().substring(start);

values.put("name", "专用APN"); // apn中文描述

values.put("apn", "myapn"); // apn名称

values.put("type", "default,supl");

values.put("numeric", NUMERIC);

values.put("mcc", NUMERIC.substring(0, 3));

values.put("mnc", NUMERIC.substring(3, NUMERIC.length()));

values.put("proxy", "");

values.put("port", "");

values.put("mmsproxy", "");

values.put("mmsport", "");

values.put("user", "");

values.put("server", "");

values.put("password", "");

values.put("mmsc", "");

Cursor c = null;

Uri newRow = resolver.insert(APN_URI, values);

if (newRow != null) {

c = resolver.query(newRow, null, null, null, null);

int idIndex = c.getColumnIndex("_id");

c.moveToFirst();

id = c.getShort(idIndex);

}

if (c != null)

c.close();

return id;

}

protected String getSIMInfo() {

TelephonyManager iPhoneManager = (TelephonyManager) this

.getSystemService(Context.TELEPHONY_SERVICE);

return iPhoneManager.getSimOperator();

}

// 设置接入点

public void SetAPN(int id) {

ContentResolver resolver = this.getContentResolver();

ContentValues values = new ContentValues();

values.put("apn_id", id);

resolver.update(CURRENT_APN_URI, values, null, null);

// resolver.delete(url, where, selectionArgs)

}

}