Exporter les Contacts sous forme de fichier VCF

Dans votre code, vous avez écrit une fonction, mais d'où est-il appelé? Et quel est le sens de get(View view) fonction? Cette fonction n'est pas appelée ainsi il peut être retiré.

J'ai édité ma réponse en fonction de vos exigences et testé avec 500 Contacts pour enregistrer un seul fichier vCard avec 500 contacts dans ma carte sd.

package com.vcard;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.ArrayList;
import android.app.Activity;
import android.content.res.AssetFileDescriptor;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.ContactsContract;
import android.util.Log;
import android.view.View;
public class VCardActivity extends Activity 
{
Cursor cursor;
ArrayList<String> vCard ;
String vfile;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) 
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
vfile = "Contacts" + "_" + System.currentTimeMillis()+".vcf";
/**This Function For Vcard And here i take one Array List in Which i store every Vcard String of Every Conatact
* Here i take one Cursor and this cursor is not null and its count>0 than i repeat one loop up to cursor.getcount() means Up to number of phone contacts.
* And in Every Loop i can make vcard string and store in Array list which i declared as a Global.
* And in Every Loop i move cursor next and print log in logcat.
* */
getVcardString();
}
private void getVcardString() {
//TODO Auto-generated method stub
vCard = new ArrayList<String>();
cursor = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, null, null, null);
if(cursor!=null&&cursor.getCount()>0)
{
cursor.moveToFirst();
for(int i =0;i<cursor.getCount();i++)
{
get(cursor);
Log.d("TAG", "Contact "+(i+1)+"VcF String is"+vCard.get(i));
cursor.moveToNext();
}
}
else
{
Log.d("TAG", "No Contacts in Your Phone");
}
}
public void get(Cursor cursor)
{
//cursor.moveToFirst();
String lookupKey = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts.LOOKUP_KEY));
Uri uri = Uri.withAppendedPath(ContactsContract.Contacts.CONTENT_VCARD_URI, lookupKey);
AssetFileDescriptor fd;
try {
fd = this.getContentResolver().openAssetFileDescriptor(uri, "r");
//Your Complex Code and you used function without loop so how can you get all Contacts Vcard.??
/* FileInputStream fis = fd.createInputStream();
byte[] buf = new byte[(int) fd.getDeclaredLength()];
fis.read(buf);
String VCard = new String(buf);
String path = Environment.getExternalStorageDirectory().toString() + File.separator + vfile;
FileOutputStream out = new FileOutputStream(path);
out.write(VCard.toString().getBytes());
Log.d("Vcard",  VCard);*/
FileInputStream fis = fd.createInputStream();
byte[] buf = new byte[(int) fd.getDeclaredLength()];
fis.read(buf);
String vcardstring= new String(buf);
vCard.add(vcardstring);
String storage_path = Environment.getExternalStorageDirectory().toString() + File.separator + vfile;
FileOutputStream mFileOutputStream = new FileOutputStream(storage_path, false);
mFileOutputStream.write(vcardstring.toString().getBytes());
} catch (Exception e1) 
{
//TODO Auto-generated catch block
e1.printStackTrace();
}
}
}

OriginalL'auteur sam_k

J'ai supprimé l'exception et d'autres erreurs et ci-dessous mon CODE :

    private final String vfile = "POContactsRestore.vcf";
Cursor phones = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null,
null, null, null);
phones.moveToFirst();
String lookupKey = phones.getString(phones.getColumnIndex(ContactsContract.Contacts.LOOKUP_KEY));
Uri uri = Uri.withAppendedPath(ContactsContract.Contacts.CONTENT_VCARD_URI, lookupKey);
AssetFileDescriptor fd;
try {
fd = this.getContentResolver().openAssetFileDescriptor(uri, "r");
FileInputStream fis = fd.createInputStream();
byte[] buf = new byte[(int) fd.getDeclaredLength()];
fis.read(buf);
String vCard = new String(buf);
String path = Environment.getExternalStorageDirectory().toString() + File.separator + vfile;
FileOutputStream mFileOutputStream = new FileOutputStream(path, false);
mFileOutputStream.write(vCard.toString().getBytes());
Log.d("Vcard",  vCard);
} catch (Exception e1) {
//TODO Auto-generated catch block
e1.printStackTrace();
}

Si vous pouvez itérer à travers la boucle et obtenir la carte de visite pour les contacts et les stocker dans la carte sd.

OriginalL'auteur Dinesh Prajapati

Android Nougat Mise À Jour :

D'autres réponses code de travail pour beaucoup de gens, avant de Nougat de mise à jour.

Veuillez prendre soin de :

byte[] buf = new byte[(int) fd.getDeclaredLength()];

ne fonctionne pas sur Android Nougat.

fd.getDeclaredLength() est toujours renvoyer -1.

Veuillez utiliser le code ci-dessous pour lire des octets sans aucune bibliothèque :

byte[] buf = readBytes(fis);
public byte[] readBytes(InputStream inputStream) throws IOException {
//this dynamically extends to take the bytes you read
ByteArrayOutputStream byteBuffer = new ByteArrayOutputStream();
//this is storage overwritten on each iteration with bytes
int bufferSize = 1024;
byte[] buffer = new byte[bufferSize];
//we need to know how may bytes were read to write them to the byteBuffer
int len = 0;
while ((len = inputStream.read(buffer)) != -1) {
byteBuffer.write(buffer, 0, len);
}
//and then we can return your byte array.
return byteBuffer.toByteArray();
}

La méthode readBytes() obtenir de cette réponse.

OriginalL'auteur SANAT

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.ContactsContract;
import android.app.Activity;
import android.content.res.AssetFileDescriptor;
import android.database.Cursor;
import android.util.Log;
public class Contacts extends Activity{
Cursor cursor;
ArrayList<String> vCard ;
String vfile;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) 
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
try {
getVcardString();
} catch (IOException e) {
//TODO Auto-generated catch block
e.printStackTrace();
}
}
private void getVcardString() throws IOException {
final String vfile = "POContactsRestore.vcf";
//TODO Auto-generated method stub
vCard = new ArrayList<String>();
cursor = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, null, null, null);
if(cursor!=null&&cursor.getCount()>0)
{
int i;
String storage_path = Environment.getExternalStorageDirectory().toString() + File.separator + vfile;
FileOutputStream mFileOutputStream = new FileOutputStream(storage_path, false);
cursor.moveToFirst();
for(i = 0;i<cursor.getCount();i++)
{
get(cursor);
Log.d("TAG", "Contact "+(i+1)+"VcF String is"+vCard.get(i));
cursor.moveToNext();
mFileOutputStream.write(vCard.get(i).toString().getBytes());
}
mFileOutputStream.close();
cursor.close();
}
else
{
Log.d("TAG", "No Contacts in Your Phone");
}
}
private void get(Cursor cursor2) {
String lookupKey = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts.LOOKUP_KEY));
Uri uri = Uri.withAppendedPath(ContactsContract.Contacts.CONTENT_VCARD_URI, lookupKey);
AssetFileDescriptor fd;
try {
fd = this.getContentResolver().openAssetFileDescriptor(uri, "r");
FileInputStream fis = fd.createInputStream();
byte[] buf = new byte[(int) fd.getDeclaredLength()];
fis.read(buf);
String vcardstring= new String(buf);
vCard.add(vcardstring);
} catch (Exception e1) 
{
//TODO Auto-generated catch block
e1.printStackTrace();
}
}
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.anthem.contactbackup"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="5"
android:targetSdkVersion="15" />
<uses-permission android:name="android.permission.READ_CONTACTS"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name=".Con"
android:label="@string/title_activity_contact_backup" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>

OriginalL'auteur kamal