Android Simple read and write contacts

First, read the contact

(1). read contact_id from Raw_contact table

(2). Read data1 from the data table

(3). Read MimeType from Mimetypes

1.androidmanifest.xml Adding Content Permissions

<?XML version= "1.0" encoding= "Utf-8"?><Manifestxmlns:android= "Http://schemas.android.com/apk/res/android" Package= "Com.example.writecontact"Android:versioncode= "1"Android:versionname= "1.0" >    <USES-SDKandroid:minsdkversion= "8"android:targetsdkversion= "+" />    <uses-permissionAndroid:name= "Android.permission.READ_CONTACTS"/>    <uses-permissionAndroid:name= "Android.permission.WRITE_CONTACTS"/>    <ApplicationAndroid:allowbackup= "true"Android:icon= "@drawable/ic_launcher"Android:label= "@string/app_name"Android:theme= "@style/apptheme" >        <ActivityAndroid:name=". Mainactivity "Android:label= "@string/app_name" >            <Intent-filter>                <ActionAndroid:name= "Android.intent.action.MAIN" />                <categoryAndroid:name= "Android.intent.category.LAUNCHER" />            </Intent-filter>        </Activity>    </Application></Manifest>

2.mainactivity.java

 Packagecom.example.readcontact;ImportAndroid.content.ContentResolver;ImportAndroid.database.Cursor;ImportAndroid.net.Uri;ImportAndroid.os.Bundle;Importandroid.support.v7.app.ActionBarActivity;ImportAndroid.view.Menu;ImportAndroid.view.MenuItem;ImportAndroid.view.View; Public classMainactivityextendsactionbaractivity {@Overrideprotected voidonCreate (Bundle savedinstancestate) {Super. OnCreate (savedinstancestate);           Setcontentview (R.layout.activity_main); }         Public voidClick (View view) {//get data from a raw_contact tableUri uri = uri.parse ("Content://com.android.contacts/raw_contacts"); //get the data in the View_data viewUri Datauri = Uri.parse ("Content://com.android.contacts/data"); Contentresolver Resovler=Getcontentresolver (); Cursor Cursor= Resovler.query (URI,NULL,NULL,NULL,NULL);  while(Cursor.movetonext ()) {String ID= Cursor.getstring (Cursor.getcolumnindex ("contact_id")); System.out.println ("----------raw_contact start-----------"); System.out.println ("Id=" +ID); if(id!=NULL)            {                //Note that the data in the Data_view view is not in the data table.Cursor datacursor = Resovler.query (Datauri,NULL, "Raw_contact_id=?",NewString[]{id},NULL);  while(Datacursor.movetonext ()) {String data= Datacursor.getstring (Datacursor.getcolumnindex ("Data1")); String mimetype= Datacursor.getstring (Datacursor.getcolumnindex ("MimeType")); System.out.println ("Data=" +data+ ", mimetype" +mimetype);            } datacursor.close (); } System.out.println ("---------Raw_contact End----------");            } cursor.close (); }}

Second, write the contact

1. Add permissions as read contacts

2, Mainactivity.java

 Packagecom.example.writecontact;ImportAndroid.content.ContentResolver;Importandroid.content.ContentValues;ImportAndroid.database.Cursor;ImportAndroid.net.Uri;ImportAndroid.os.Bundle;Importandroid.support.v7.app.ActionBarActivity;ImportAndroid.view.Menu;ImportAndroid.view.MenuItem;ImportAndroid.view.View; Public classMainactivityextendsactionbaractivity {@Overrideprotected voidonCreate (Bundle savedinstancestate) {Super. OnCreate (savedinstancestate);    Setcontentview (R.layout.activity_main); }         Public voidClick (View view) {//get data from a raw_contact tableUri uri = uri.parse ("Content://com.android.contacts/raw_contacts"); //get the data in the View_data viewUri Datauri = Uri.parse ("Content://com.android.contacts/data"); Contentresolver Resovler=Getcontentresolver (); Cursor Cursor= Resovler.query (URI,Newstring[]{"_id"},NULL,NULL,NULL);        Cursor.movetolast (); intLastID = Cursor.getint (0); intcontact_id = lastid+1; Contentvalues Values=Newcontentvalues (); Values.put ("CONTACT_ID", contact_id); //adding data to the Raw_contact tableResovler.insert (URI, values); //add phone data to the data tableContentvalues phonevalues =Newcontentvalues (); Phonevalues.put ("Data1", "77777"); Phonevalues.put ("MimeType", "VND.ANDROID.CURSOR.ITEM/PHONE_V2"); Phonevalues.put ("RAW_CONTACT_ID", contact_id); //adding data to the Raw_contact tableResovler.insert (Datauri, phonevalues); //Add name data to the data tableContentvalues namevalues =Newcontentvalues (); Namevalues.put ("Data1", "Zhaoqi"); Namevalues.put ("MimeType", "Vnd.android.cursor.item/name"); Namevalues.put ("RAW_CONTACT_ID", contact_id); //adding data to the Raw_contact tableResovler.insert (Datauri, namevalues); //add phone data to the data tableContentvalues emailvalues =Newcontentvalues (); Emailvalues.put ("Data1", "[email protected]"); Emailvalues.put ("MimeType", "VND.ANDROID.CURSOR.ITEM/EMAIL_V2"); Emailvalues.put ("RAW_CONTACT_ID", contact_id); //adding data to the Raw_contact tableResovler.insert (Datauri, emailvalues); }}

Android Simple read and write contacts