Android：设置APN为cmnet源码 ----android 4.0之后需要系统签名才能添加

01	publicclassAPNActivityextendsActivity {

02

03	publicstaticfinalUri APN_URI = Uri.parse("content://telephony/carriers");

04	publicstaticfinalUri CURRENT_APN_URI = Uri.parse("content://telephony/carriers/preferapn");

05

06

@Override

07	publicvoidonCreate(Bundle savedInstanceState) {

08	super.onCreate(savedInstanceState);

09	setContentView(R.layout.main);

10	int_cmnetId = addAPN();

11	SetAPN(_cmnetId);

12

}

01	publicvoidcheckAPN(){

02	// 检查当前连接的APN

03	Cursor cr = getContentResolver().query(CURRENT_APN_URI,null,null,

04	null,null);

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

06

// APN id

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

08	// APN name

09	String apn = StringUtils.null2String(cr

10	.getString(cr.getColumnIndex("apn")));

11	//Toast.makeText(getApplicationContext(),

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

13

14

}

15

16	//新增一个cmnet接入点

17	publicintaddAPN() {

18	intid = -1;

19	ContentResolver resolver =this.getContentResolver();

20	ContentValues values =newContentValues();

21	values.put("name","cmnet");

22	values.put("apn","cmnet");

23	Cursor c =null;

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

25	if(newRow !=null) {

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

27	intidIndex = c.getColumnIndex("_id");

28	c.moveToFirst();

29	id = c.getShort(idIndex);

30

}

31	if(c !=null)

32	c.close();

33

returnid;

34

}

35

//设置接入点

36	publicvoidSetAPN(intid) {

37	ContentResolver resolver =this.getContentResolver();

38	ContentValues values =newContentValues();

39	values.put("apn_id", id);

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

41

}

42

}