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

16lz 2021-01-24

`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 }

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