我想将手机通讯录导出到外部存储区域。我没有使用这种方法。有人指导我这样做吗?
答案 0 :(得分:24)
在你的代码中,你编写了一个函数但是从哪里调用了这个函数? get(View view)
函数的含义是什么?此函数未被调用,因此可以将其删除。
我根据您的要求编辑了我的答案,并使用500个联系人对其进行了测试,以便在我的SD卡中保存一个包含500个联系人的vCard文件。
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();
}
}
}
答案 1 :(得分:7)
我已删除了异常和其他错误,以下是我的代码:
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();
}
如果您可以遍历循环并获取联系人的vCard并将其存储在SDCARD中。
答案 2 :(得分:7)
试试这个。它为我创建了一个所有联系人的.vcf文件,并将其存储到SDCARD中。
确保正确授予所有权限。
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();
}
}
}
答案 3 :(得分:7)
Android Nougat更新:
其他答案代码在Nougat更新之前为很多人工作。
请注意:
byte[] buf = new byte[(int) fd.getDeclaredLength()];
无法使用 Android Nougat 。
fd.getDeclaredLength()始终返回-1。
请使用以下代码读取没有任何库的读取字节:
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();
}
readBytes()方法来自this回答。
答案 4 :(得分:6)
我尝试了两个代码,我也得到了.VCF文件,但它只包含一个联系人。所以这里是完美编辑和运行代码....你将获得.VCF文件中的所有联系人:
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");
}
}
第二种方法:
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();
}
}
请不要忘记添加:
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
答案 5 :(得分:1)
它为我工作,也在Nougat设备上工作。非常感谢@pratik和@sanat。
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();
}
答案 6 :(得分: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>
答案 7 :(得分: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();
}
}