Exportar los contactos como archivo VCF

En su código, escribió una función, pero ¿de dónde se llama esta función? ¿Y cuál es el significado de la función get(View view) ? Esta función no se está llamando así que se puede quitar.

He editado mi respuesta según sus necesidades y lo he probado con 500 contactos para guardar un único archivo vCard con 500 contactos en mi tarjeta 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(); } } } 

He quitado la excepción y el otro error y abajo soy mi CÓDIGO:

  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 puede iterar a través de bucle y obtener la vCard para los contactos y almacenar en el SDCARD.

Prueba esto. Su trabajo para mí para crear un archivo .vcf de todos los contactos y lo almacenó en SDCARD.

Asegúrese de que todos los permisos se den correctamente.

 public static void getVCF() { final String vfile = "POContactsRestore.vcf"; Cursor phones = mContext.getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null,null, null, null); phones.moveToFirst(); for(int i =0;i<phones.getCount();i++) { String lookupKey = phones.getString(phones.getColumnIndex(ContactsContract.Contacts.LOOKUP_KEY)); Uri uri = Uri.withAppendedPath(ContactsContract.Contacts.CONTENT_VCARD_URI, lookupKey); AssetFileDescriptor fd; try { fd = mContext.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, true); mFileOutputStream.write(VCard.toString().getBytes()); phones.moveToNext(); Log.d("Vcard", VCard); } catch (Exception e1) { // TODO Auto-generated catch block e1.printStackTrace(); } } } 

He intentado por encima de dos códigos y tengo el archivo .VCF también, pero estaba conteniendo sólo un contacto. Así que aquí está perfectamente editado y ejecutando código …. obtendrá todos los contactos en el archivo .VCF:

 private void getVcardString() throws IOException { // TODO Auto-generated method stub vCard = new ArrayList<String>(); // Its global.... 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"); } } 

Segundo método:

 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(); } } 

Por favor, no olvide agregar:

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

Actualización del turrón de Android:

El código de otras respuestas funciona para mucha gente antes de actualizar el turrón.

Por favor cuide de:

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

No está trabajando en Android Nougat .

Fd.getDeclaredLength () siempre es return -1.

Utilice por favor debajo código para los bytes leídos sin ninguna biblioteca:

 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(); } 

El método readBytes () obtiene de esta respuesta.

 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>