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android - 如何为android中的所有联系人创建一个.vcf文件

转载 作者:行者123 更新时间:2023-11-29 22:11:13 24 4
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我想使用以下代码为所有联系人创建一个 .vcf。下面的代码可以很好地创建 .vcf 文件,但它只存储一个联系人。请帮助我..

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();
}
}
}

请告诉我更改或修改以上代码,为 android 中的所有联系人创建一个 .vcf 文件。

最佳答案

您正在覆盖每个联系人的文件。

true 作为第二个参数传递给 new FileOutputStream(...) 以附加到文件。

更好的是,不要为循环中的每次写入重新打开文件。

关于android - 如何为android中的所有联系人创建一个.vcf文件,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/9582643/

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