14

電話の連絡先を外部ストレージ領域にエクスポートしたい。私はこのタイプの方法では動作しませんでした。誰かが私にこれをするように案内しますか？

4

8 に答える 8

29

あなたのコードでは、1つの関数を記述しましたが、この関数はどこから呼び出されますか？そして、get(View view)機能の意味は何ですか？この関数は呼び出されていないため、削除できます。

私はあなたの要件に従って私の答えを編集し、500の連絡先でそれをテストして、私のsdカードに500の連絡先を持つ単一のvCardファイルを保存しました。

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();
        }
    }
}
于 2011-11-16T06:29:39.527 に答える
8

Android Nougatアップデート：

他の回答コードは、ヌガーが更新される前に多くの人のために機能していました。

気をつけてください：

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

AndroidNougatでは動作しません。

fd.getDeclaredLength（）は常に-1を返します。

ライブラリなしでバイトを読み取るには、以下のコードを使用してください。

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();
}

メソッドreadBytes（）は、この回答から取得します。

于 2017-02-11T17:41:17.087 に答える
7

私は例外と他のエラーを取り除きました、そして以下は私のコードです：

    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();
            }

ループを繰り返して連絡先のvCardを取得し、SDCARDに保存できる場合。

于 2011-11-16T07:47:24.843 に答える
7

これを試してみてください。すべての連絡先の.vcfファイルを作成し、それをSDCARDに保存するための作業です。

すべての許可が適切に与えられていることを確認してください。

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();
     }

 }
}
于 2012-04-30T09:19:14.580 に答える
6

上記の2つのコードを試し、.VCFファイルも取得しましたが、連絡先が1つしか含まれていませんでした。これが完全に編集され実行中のコードです....すべての連絡先が.VCFファイルに含まれます。

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");
    }
}

2番目の方法：

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();
    }
}

追加することを忘れないでください：

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
于 2012-11-26T07:41:45.230 に答える
1

それは私のために働いており、Nougatデバイスでも働いています。@pratikと@sanat、どうもありがとうございました。

public static void getVCF(Context context)
    {

        final String vfile = "POContactsRestore.vcf";

        Cursor phones = context.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 = context.getContentResolver().openAssetFileDescriptor(uri, "r");
                FileInputStream fis = fd.createInputStream();
                byte[] buf = readBytes(fis);
                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();
            }

        }
    }

    public static 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();
    }
于 2018-03-19T10:46:08.967 に答える
0 
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>

于 2013-01-25T09:18:47.603 に答える
0 
private void convertToVcfFile(String contactId, File contactFile) {
    Cursor mCursor = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
            null, ContactsContract.CommonDataKinds.Phone._ID + " = " + contactId,
            null, null);
    if(mCursor != null && mCursor.moveToFirst()) {
        do {
            String mLookupKey = mCursor.getString(mCursor.getColumnIndex(ContactsContract.Contacts.LOOKUP_KEY));
            Uri mUri = Uri.withAppendedPath(ContactsContract.Contacts.CONTENT_VCARD_URI, mLookupKey);
            try {
                AssetFileDescriptor mAssetFileDescriptor = getContentResolver().openAssetFileDescriptor(mUri, "r");
                if (mAssetFileDescriptor != null) {
                    FileInputStream mFileInputStream = mAssetFileDescriptor.createInputStream();
                    byte[] mBuffer = new byte[(int) mAssetFileDescriptor.getDeclaredLength()];
                    mFileInputStream.read(mBuffer);
                    String VCardString = new String(mBuffer);
                    FileOutputStream mFileOutputStream = new FileOutputStream(contactFile, true);
                    mFileOutputStream.write(VCardString.getBytes());
                }
            } catch (Exception e1) {
                e1.printStackTrace();
            }
        } while (mCursor.moveToNext());
        mCursor.close();
    }
}
于 2019-05-15T10:11:29.413 に答える