Android 如何加载联系人照片?

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时间:2020-08-20 05:37:48  来源:igfitidea点击:

How do I load a contact Photo?

androidcontactscontract

提问by PaulH

I'm having trouble loading a photo for a contact in Android. I've googled for an answer, but so far have come up empty. Does anyone have an example of querying for a Contact, then loading the Photo?

我在 Android 中为联系人加载照片时遇到问题。我在谷歌上搜索了答案,但到目前为止都是空的。有没有人有查询联系人然后加载照片的示例?

So, given a contactUri which comes from an Activity result called using

因此,给定一个来自名为 using 的 Activity 结果的 contactUri

startActivityForResult(new Intent(Intent.ACTION_PICK,ContactsContract.CommonDataKinds.Phone.CONTENT_URI),PICK_CONTACT_REQUEST) 

is:

是:

content://com.android.contacts/data/1557

content://com.android.contacts/data/1557

The loadContact(..) works fine. However when I call the getPhoto(...) method, I get a null value for the photo InputStream. It is also confusing because the URI values are different. The contactPhotoUri evaluates to:

loadContact(..) 工作正常。但是,当我调用 getPhoto(...) 方法时,我得到了照片 InputStream 的空值。这也令人困惑,因为 URI 值不同。contactPhotoUri 评估为:

content://com.android.contacts/contacts/1557

content://com.android.contacts/contacts/1557

See the comments inline in the code below.

请参阅下面代码中的内联注释。

 class ContactAccessor {

    /**
     * Retrieves the contact information.
     */
    public ContactInfo loadContact(ContentResolver contentResolver, Uri contactUri) {

        //contactUri --> content://com.android.contacts/data/1557

        ContactInfo contactInfo = new ContactInfo();

        // Load the display name for the specified person
        Cursor cursor = contentResolver.query(contactUri,
                                            new String[]{Contacts._ID, 
                                                         Contacts.DISPLAY_NAME, 
                                                         Phone.NUMBER,
                                                         Contacts.PHOTO_ID}, null, null, null);
        try {
            if (cursor.moveToFirst()) {
                contactInfo.setId(cursor.getLong(0));
                contactInfo.setDisplayName(cursor.getString(1));
                contactInfo.setPhoneNumber(cursor.getString(2));
            }
        } finally {
            cursor.close();
        }        
        return contactInfo;  // <-- returns info for contact
    }

    public Bitmap getPhoto(ContentResolver contentResolver, Long contactId) {
        Uri contactPhotoUri = ContentUris.withAppendedId(Contacts.CONTENT_URI, contactId);

        // contactPhotoUri --> content://com.android.contacts/contacts/1557

        InputStream photoDataStream = Contacts.openContactPhotoInputStream(contentResolver,contactPhotoUri); // <-- always null
        Bitmap photo = BitmapFactory.decodeStream(photoDataStream);
        return photo;
    }

    public class ContactInfo {

        private long id;
        private String displayName;
        private String phoneNumber;
        private Uri photoUri;

        public void setDisplayName(String displayName) {
            this.displayName = displayName;
        }

        public String getDisplayName() {
            return displayName;
        }

        public void setPhoneNumber(String phoneNumber) {
            this.phoneNumber = phoneNumber;
        }

        public String getPhoneNumber() {
            return phoneNumber;
        }

        public Uri getPhotoUri() {
            return this.photoUri;
        }

        public void setPhotoUri(Uri photoUri) {
            this.photoUri = photoUri;
        }

        public long getId() {
            return this.id;
        }

        public void setId(long id) {
            this.id = id;
        }

    }
}

Clearly, I'm doing something wrong here, but I can't seem to figure out what the problem is. Thanks.

显然,我在这里做错了,但我似乎无法弄清楚问题是什么。谢谢。

采纳答案by Phil

Having scanned the many questions and answers to the problem of displaying a thumbnail I thought I would post my solution to this particular conundrum as I could only find a couple that worked at all and none that provided a good canned solution for the lazy developer.

扫描了显示缩略图问题的许多问题和答案后,我想我会发布我对这个特定难题的解决方案,因为我只能找到几个完全有效的解决方案,而没有一个为懒惰的开发人员提供了一个好的罐头解决方案。

The class below takes a Context, QuickContactBadge and a telephone number and will attach a locally stored image to the badge if there is one available for the specified phone number.

下面的类采用 Context、QuickContactBadge 和电话号码,如果指定电话号码有可用的图像,则会将本地存储的图像附加到徽章上。

Here's the class:

这是课程:

public final class QuickContactHelper {

private static final String[] PHOTO_ID_PROJECTION = new String[] {
    ContactsContract.Contacts.PHOTO_ID
};

private static final String[] PHOTO_BITMAP_PROJECTION = new String[] {
    ContactsContract.CommonDataKinds.Photo.PHOTO
};

private final QuickContactBadge badge;

private final String phoneNumber;

private final ContentResolver contentResolver;

public QuickContactHelper(final Context context, final QuickContactBadge badge, final String phoneNumber) {

    this.badge = badge;
    this.phoneNumber = phoneNumber;
    contentResolver = context.getContentResolver();

}

public void addThumbnail() {

    final Integer thumbnailId = fetchThumbnailId();
    if (thumbnailId != null) {
        final Bitmap thumbnail = fetchThumbnail(thumbnailId);
        if (thumbnail != null) {
            badge.setImageBitmap(thumbnail);
        }
    }

}

private Integer fetchThumbnailId() {

    final Uri uri = Uri.withAppendedPath(ContactsContract.CommonDataKinds.Phone.CONTENT_FILTER_URI, Uri.encode(phoneNumber));
    final Cursor cursor = contentResolver.query(uri, PHOTO_ID_PROJECTION, null, null, ContactsContract.Contacts.DISPLAY_NAME + " ASC");

    try {
        Integer thumbnailId = null;
        if (cursor.moveToFirst()) {
            thumbnailId = cursor.getInt(cursor.getColumnIndex(ContactsContract.Contacts.PHOTO_ID));
        }
        return thumbnailId;
    }
    finally {
        cursor.close();
    }

}

final Bitmap fetchThumbnail(final int thumbnailId) {

    final Uri uri = ContentUris.withAppendedId(ContactsContract.Data.CONTENT_URI, thumbnailId);
    final Cursor cursor = contentResolver.query(uri, PHOTO_BITMAP_PROJECTION, null, null, null);

    try {
        Bitmap thumbnail = null;
        if (cursor.moveToFirst()) {
            final byte[] thumbnailBytes = cursor.getBlob(0);
            if (thumbnailBytes != null) {
                thumbnail = BitmapFactory.decodeByteArray(thumbnailBytes, 0, thumbnailBytes.length);
            }
        }
        return thumbnail;
    }
    finally {
        cursor.close();
    }

}

}

And here's a typical use case inside an activity:

这是活动中的典型用例:

String phoneNumber = "...";
QuickContactBadge badge = (QuickContactBadge) view.findViewById(R.id.friend);
new QuickContactHelper(this, badge, phoneNumber).addThumbnail();

In a fragment it will be slightly different:

在片段中它会略有不同:

String phoneNumber = "...";
QuickContactBadge badge = (QuickContactBadge) view.findViewById(R.id.friend);
new QuickContactHelper(getActivity(), badge, phoneNumber).addThumbnail();

Now there are ways to be more efficient - for example if you are rendering a message timeline you'd want to re-use the same bitmap object for every badge instance for a given phone number instead of constantly creating new helper class instances and re-retrieving the bitmap - but my purpose here was to post a solution that is stripped down to the absolute minimum for clarity whilst at the same time providing a complete and usable solution out of the box. This solution has been built and tested on Andriod 4.0, and tested on 4.1 as well.

现在有一些方法可以提高效率 - 例如,如果您正在渲染消息时间线,您希望为给定电话号码的每个徽章实例重新使用相同的位图对象,而不是不断创建新的帮助程序类实例并重新 -检索位图 - 但我在这里的目的是发布一个解决方案,为了清晰起见,该解决方案被精简到绝对最小值,同时提供一个完整且可用的开箱即用的解决方案。此解决方案已在 Andriod 4.0 上构建和测试,也在 4.1 上进行了测试。

回答by wrongmissle

This works for me:

这对我有用:

public static Bitmap loadContactPhoto(ContentResolver cr, long  id) {
    Uri uri = ContentUris.withAppendedId(ContactsContract.Contacts.CONTENT_URI, id);
    InputStream input = ContactsContract.Contacts.openContactPhotoInputStream(cr, uri);
    if (input == null) {
        return null;
    }
    return BitmapFactory.decodeStream(input);
}

回答by assaf passal

After a lot of debugging nights I discover that the best approach is to use the contact idand if it fails to use the photo id.

经过大量调试之夜后,我发现最好的方法是contact id使用photo id.

public static Bitmap loadContactPhoto(ContentResolver cr, long  id,long photo_id) 
{

    Uri uri = ContentUris.withAppendedId(ContactsContract.Contacts.CONTENT_URI, id);
    InputStream input = ContactsContract.Contacts.openContactPhotoInputStream(cr, uri);
    if (input != null) 
    {
        return BitmapFactory.decodeStream(input);
    }
    else
    {
        Log.d("PHOTO","first try failed to load photo");

    }

    byte[] photoBytes = null;

    Uri photoUri = ContentUris.withAppendedId(ContactsContract.Data.CONTENT_URI, photo_id);

    Cursor c = cr.query(photoUri, new String[] {ContactsContract.CommonDataKinds.Photo.PHOTO}, null, null, null);

    try 
    {
        if (c.moveToFirst()) 
            photoBytes = c.getBlob(0);

    } catch (Exception e) {
        // TODO: handle exception
        e.printStackTrace();

    } finally {

        c.close();
    }           

    if (photoBytes != null)
        return BitmapFactory.decodeByteArray(photoBytes,0,photoBytes.length);
    else
        Log.d("PHOTO","second try also failed");
    return null;
}

the code tested on emulator and Nexus S device and seems to work.

在模拟器和 Nexus S 设备上测试的代码似乎可以工作。

回答by ROFLwTIME

Guys, I spent many hours attempting to figure this out. Here is a method I created that will get you your facebook photo by phone number (no dashes). You can, of course, modify it accordingly:

伙计们,我花了很多时间试图弄清楚这一点。这是我创建的一种方法,可以通过电话号码(无破折号)为您获取 Facebook 照片。当然,您可以相应地修改它:

    public Bitmap getFacebookPhoto(String phoneNumber) {
    Uri phoneUri = Uri.withAppendedPath(PhoneLookup.CONTENT_FILTER_URI, Uri.encode(phoneNumber));
    Uri photoUri = null;
    ContentResolver cr = this.getContentResolver();
    Cursor contact = cr.query(phoneUri,
            new String[] { ContactsContract.Contacts._ID }, null, null, null);

    if (contact.moveToFirst()) {
        long userId = contact.getLong(contact.getColumnIndex(ContactsContract.Contacts._ID));
        photoUri = ContentUris.withAppendedId(ContactsContract.Contacts.CONTENT_URI, userId);

    }
    else {
        Bitmap defaultPhoto = BitmapFactory.decodeResource(getResources(), android.R.drawable.ic_menu_report_image);
        return defaultPhoto;
    }
    if (photoUri != null) {
        InputStream input = ContactsContract.Contacts.openContactPhotoInputStream(
                cr, photoUri);
        if (input != null) {
            return BitmapFactory.decodeStream(input);
        }
    } else {
        Bitmap defaultPhoto = BitmapFactory.decodeResource(getResources(), android.R.drawable.ic_menu_report_image);
        return defaultPhoto;
    }
    Bitmap defaultPhoto = BitmapFactory.decodeResource(getResources(), android.R.drawable.ic_menu_report_image);
    return defaultPhoto;
}

回答by kellogs

None of these approaches worked for me. What did work was:

这些方法都不适合我。有效的是:

String[] projection = new String[] {
                ContactsContract.Contacts.PHOTO_ID,                 ///< the correct ID for photo retrieval in loadLocalContactPhotoBytes()
//              ContactsContract.Contacts._ID,
                ContactsContract.Contacts.DISPLAY_NAME,
                ContactsContract.CommonDataKinds.Phone.NUMBER,
//              ContactsContract.CommonDataKinds.Photo.PHOTO
        };

        ContentResolver cr = ctx.getContentResolver();

        Cursor cursor = cr.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
                //      Cursor cursor = cr.query(ContactsContract.Contacts.CONTENT_URI,
                //              new String[] {RawContacts._ID, RawContacts.ACCOUNT_TYPE, RawContacts.ACCOUNT_NAME},
                //              new String[] {Contacts._ID},
                projection, null, null, ContactsContract.Contacts.DISPLAY_NAME + " ASC");

....

//the 'cursor' above got passed as an argument below

//上面的“光标”作为下面的参数传递

    private byte[] loadLocalContactPhotoBytes(ContentResolver cr, Cursor cursor, byte[] defaultPhotoBytes)
    {
        byte[] photoBytes = null;// = cursor.getBlob(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Photo.PHOTO));

//      int id = cursor.getInt(cursor.getColumnIndex(ContactsContract.Contacts._ID));
        int id = cursor.getInt(cursor.getColumnIndex(ContactsContract.Contacts.PHOTO_ID));
//      Uri contactUri = ContentUris.withAppendedId(ContactsContract.Contacts.CONTENT_URI, id);
//      Uri photoUri = Uri.withAppendedPath(contactUri, ContactsContract.Contacts.Photo.CONTENT_DIRECTORY);
        Uri photoUri = ContentUris.withAppendedId(ContactsContract.Data.CONTENT_URI, id);

        Cursor c = cr.query(photoUri, new String[] {ContactsContract.CommonDataKinds.Photo.PHOTO}, null, null, null);

        try 
        {
            if (c.moveToFirst()) 
                photoBytes = c.getBlob(0);

        } catch (Exception e) {
            // TODO: handle exception
            Log.w(_TAG, e.toString());

        } finally {

            c.close();
        }           

        photoBytes = photoBytes == null ? defaultPhotoBytes : photoBytes;
        return photoBytes;
    }

回答by brandall

Just for kicks I copied most of the answers here into a single class to see if any of them would succeed in getting the Facebook thumbnail. They didn't.... But, here is what I did to perhaps save you doing the same.

只是为了踢球,我将这里的大部分答案复制到一个班级中,看看他们中的任何一个是否能成功获得 Facebook 缩略图。他们没有......但是,这是我所做的,也许可以避免你做同样的事情。

It shows the results in a dialog for ease.

为方便起见,它在对话框中显示结果。

Please be aware - it's not optimised and you'll need to catch errors and close cursors etc:

请注意 -它没有优化,您需要捕获错误并关闭游标等

To start the contact picker intent:

要启动联系人选择器意图:

private static final int SELECT_CONTACT = 1468;

Intent contactPickerIntent = new Intent(Intent.ACTION_PICK, Contacts.CONTENT_URI);
contactPickerIntent.setFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);

try {
    startActivityForResult(contactPickerIntent, SELECT_CONTACT);
} catch (ActivityNotFoundException e) {
    e.printStackTrace();
}

The callback:

回调:

@Override
    public void onActivityResult(final int requestCode, final int resultCode, final Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

    if (data != null && resultCode == Activity.RESULT_OK) {

        switch (requestCode) {

        case SELECT_CONTACT:

            Uri contactURI = data.getData();

            if (contactURI != null) {

                String contactID = data.getData().getLastPathSegment().trim();

                String contactName = ContactThumb.getDisplayName(getActivity(), contactURI);

                if (contactName != null && !contactName.isEmpty() && contactID != null && !contactID.isEmpty()) {

                    final int THUMBNAIL_SIZE = 100;

                    Bitmap contactThumb = ContactThumb.loadContactPhoto(getActivity(), Long.valueOf(contactID));

                    if (contactThumb != null) {

                        final AlertDialog.Builder alert = new AlertDialog.Builder(getActivity());

                        final int width = contactThumb.getWidth();
                        final int height = contactThumb.getHeight();
                        final int ratio = width / height;

                        final Bitmap resized = ThumbnailUtils.extractThumbnail(contactThumb, (THUMBNAIL_SIZE * ratio),
                                THUMBNAIL_SIZE);

                        Drawable icon = new BitmapDrawable(getActivity().getResources(), resized);

                        alert.setIcon(icon);

                        alert.setTitle("Contact details");

                        final TextView homeTV = new TextView(getActivity());

                        homeTV.setText(contactName + " : " + contactID);
                        homeTV.setTextSize(12);

                        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.HONEYCOMB) {
                            homeTV.setTextColor(Color.WHITE);
                        }

                        homeTV.setPadding(30, 2, 20, 10);
                        homeTV.setMovementMethod(LinkMovementMethod.getInstance());

                        alert.setView(homeTV);
                        alert.show();

                    } else {
                        Toast.makeText(getActivity(), "Photo null", Toast.LENGTH_SHORT).show();
                    }
                }

            }

            break;
        }
    } else {
        // cancelled or error
    }
}

The ContactThumb attempts....

ContactThumb 尝试....

import java.io.InputStream;
import android.content.ContentResolver;
import android.content.ContentUris;
import android.content.Context;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.provider.ContactsContract;
import android.provider.ContactsContract.Contacts;
import android.provider.ContactsContract.PhoneLookup;
import android.provider.ContactsContract.CommonDataKinds.Phone;
import android.util.Log;

public class ContactThumb {

private static final String TAG = "THUMB";

public static String getDisplayName(final Context ctx, final Uri contactURI) {

    String cname = null;

    try {

        final String[] projection = new String[] { ContactsContract.Contacts.DISPLAY_NAME };
        final Cursor cursor = ctx.getContentResolver().query(contactURI, projection, null, null, null);

        if (cursor != null) {

            try {

                if (cursor.moveToFirst()) {
                    cname = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
                }

            } finally {
                cursor.close();
            }

        }

    } catch (final Exception e) {
        e.printStackTrace();
    }

    return cname;
}

public static Bitmap loadContactPhoto(final Context ctx, final long contactId) {

    final Uri contactUri = ContentUris.withAppendedId(ContactsContract.Contacts.CONTENT_URI, contactId);

    final InputStream input = ContactsContract.Contacts.openContactPhotoInputStream(ctx.getContentResolver(), contactUri);

    if (input != null) {
        Log.i(TAG, "loadContactPhoto: input");

        return BitmapFactory.decodeStream(input);

    } else {

        byte[] photoBytes = null;

        Uri photoUri = Uri.withAppendedPath(contactUri, Contacts.Photo.CONTENT_DIRECTORY);

        final Cursor c = ctx.getContentResolver().query(photoUri,
                new String[] { ContactsContract.CommonDataKinds.Photo.PHOTO }, null, null, null);

        try {

            if (c.moveToFirst()) {
                photoBytes = c.getBlob(0);
            }

        } catch (final Exception e) {
            e.printStackTrace();

        } finally {
            c.close();
        }

        if (photoBytes != null) {

            Log.i(TAG, "loadContactPhoto: photoBytes");

            return BitmapFactory.decodeByteArray(photoBytes, 0, photoBytes.length);

        } else {

            Bitmap another = finalAttempt(ctx, contactId);

            if (another != null) {

                Log.i(TAG, "loadContactPhoto: another");

                return another;
            } else {

                Log.i(TAG, "loadContactPhoto: might be returning default");

                return getFacebookPhoto(ctx, getContactNumber(ctx, String.valueOf(contactId)));
            }
        }
    }
}

public static String getContactNumber(final Context ctx, final String contactID) {

    Cursor phones = null;

    try {

        phones = ctx.getContentResolver().query(Phone.CONTENT_URI, null, Phone.CONTACT_ID + " = " + contactID, null, null);

        String cnum = null;

        if (phones != null && phones.getCount() > 0) {

            while (phones.moveToNext()) {
                cnum = phones.getString(phones.getColumnIndex(Phone.NUMBER));

                if (cnum != null && !cnum.isEmpty() && !cnum.contains("@")) {

                    Log.i(TAG, "getContactNumbers: : cnum: " + cnum);

                    try {
                        phones.close();
                    } catch (Exception e) {
                        e.printStackTrace();
                    }

                    return cnum;
                }
            }
        }

    } catch (Exception e) {
        e.printStackTrace();
    }

    return null;
}

public static Bitmap getFacebookPhoto(final Context ctx, String phoneNumber) {

    Uri phoneUri = Uri.withAppendedPath(PhoneLookup.CONTENT_FILTER_URI, Uri.encode(phoneNumber));
    Uri photoUri = null;
    ContentResolver cr = ctx.getContentResolver();

    Cursor contact = cr.query(phoneUri, new String[] { ContactsContract.Contacts._ID }, null, null, null);

    if (contact.moveToFirst()) {
        long userId = contact.getLong(contact.getColumnIndex(ContactsContract.Contacts._ID));
        photoUri = ContentUris.withAppendedId(ContactsContract.Contacts.CONTENT_URI, userId);

    } else {
        Bitmap defaultPhoto = BitmapFactory.decodeResource(ctx.getResources(), android.R.drawable.ic_menu_report_image);
        return defaultPhoto;
    }
    if (photoUri != null) {
        InputStream input = ContactsContract.Contacts.openContactPhotoInputStream(cr, photoUri);
        if (input != null) {
            return BitmapFactory.decodeStream(input);
        }
    } else {
        Bitmap defaultPhoto = BitmapFactory.decodeResource(ctx.getResources(), android.R.drawable.ic_menu_report_image);
        return defaultPhoto;
    }
    Bitmap defaultPhoto = BitmapFactory.decodeResource(ctx.getResources(), android.R.drawable.ic_menu_report_image);
    return defaultPhoto;
}

public static Bitmap finalAttempt(final Context ctx, final long contactId) {

    byte[] photoBytes = null;

    String[] projection = new String[] { ContactsContract.Contacts.PHOTO_ID, ContactsContract.Contacts.DISPLAY_NAME,
            ContactsContract.CommonDataKinds.Phone.NUMBER, };

    ContentResolver cr = ctx.getContentResolver();

    final Uri contactUri = ContentUris.withAppendedId(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, contactId);

    Cursor cursor = cr.query(contactUri, projection, null, null, ContactsContract.Contacts.DISPLAY_NAME + " ASC");

    if (cursor != null && cursor.moveToFirst()) {

        int id = cursor.getInt(cursor.getColumnIndex(ContactsContract.Contacts.PHOTO_ID));
        Uri photoUri = ContentUris.withAppendedId(ContactsContract.Data.CONTENT_URI, id);

        Cursor c = cr.query(photoUri, new String[] { ContactsContract.CommonDataKinds.Photo.PHOTO }, null, null, null);

        try {
            if (c.moveToFirst()) {
                photoBytes = c.getBlob(0);
            }

        } catch (Exception e) {

        } finally {
            cursor.close();
            c.close();
        }

        if (photoBytes != null) {
            return BitmapFactory.decodeByteArray(photoBytes, 0, photoBytes.length);
        }
    }

    return null;
}

}

If any of the methods work for you, please upvote the answer I've copied and pasted the code from!

如果任何方法对您有用,请对我复制并粘贴代码的答案点赞!

Check this link for the Android Developers suggested way

检查此链接以了解Android 开发人员建议的方式

Good luck

祝你好运

回答by Andrii Kovalchuk

Android documentation says, that we should do it in this way.

Android 文档说,我们应该这样做。

public Bitmap openPhoto(long contactId) {
        Uri contactUri = ContentUris.withAppendedId(ContactsContract.Contacts.CONTENT_URI, contactId);
        Uri photoUri = Uri.withAppendedPath(contactUri, ContactsContract.Contacts.Photo.CONTENT_DIRECTORY);
        Cursor cursor = getContentResolver().query(photoUri,
                new String[] {ContactsContract.Contacts.Photo.PHOTO}, null, null, null);
        if (cursor == null) {
            return null;
        }
        try {
            if (cursor.moveToFirst()) {
                byte[] data = cursor.getBlob(0);
                if (data != null) {
                    return BitmapFactory.decodeStream(new ByteArrayInputStream(data));
                }
            }
        } finally {
            cursor.close();
        }
        return null;

}

contactId stands for:

contactId 代表:

getString(c.getColumnIndex(ContactsContract.Contacts._ID))

source: https://developer.android.com/reference/android/provider/ContactsContract.Contacts.Photo.html

来源:https: //developer.android.com/reference/android/provider/ContactsContract.Contacts.Photo.html

回答by PaulH

It seems that my problem was because the contacts in my device were synced from facebook, and the photo therefore is not available.

我的问题似乎是因为我设备中的联系人是从 Facebook 同步的,因此照片不可用。

http://groups.google.com/group/android-developers/msg/be8d0cf3928e4b7f

http://groups.google.com/group/android-developers/msg/be8d0cf3928e4b7f

回答by Arnold

After some research I found the solution at: Displaying the Quick Contact Badge

经过一番研究,我找到了解决方案:Displaying the Quick Contact Badge

My code with some minor modifications, works fine for me

我的代码做了一些小的修改,对我来说很好用

    public Bitmap loadContactPhoto(String name) {
    String photoUri = null;     
    int thumbnailColumn;        
    ContentResolver cr = GlobalData.instance().getContext().getContentResolver();
    String[] projection = new String[] { ContactsContract.Contacts._ID ,ContactsContract.Contacts.PHOTO_ID,  ContactsContract.Contacts.PHOTO_URI, ContactsContract.Contacts.PHOTO_THUMBNAIL_URI};
    Cursor cursor = cr.query(ContactsContract.Contacts.CONTENT_URI, projection, ContactsContract.Contacts.DISPLAY_NAME + "='" + name + "'", null, null);
    if (cursor.moveToFirst()) {
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) 
                thumbnailColumn =   cursor.getColumnIndex(Contacts.PHOTO_THUMBNAIL_URI);
            else
                thumbnailColumn = cursor.getColumnIndex(PhoneLookup._ID);

            photoUri = cursor.getString(thumbnailColumn);

            if(photoUri != null)
                return loadContactPhotoThumbnail(photoUri);
            else
                return null;    
    }
    return null;
}
private Bitmap loadContactPhotoThumbnail(String photoData) {
    AssetFileDescriptor afd = null;
    try {

        Uri thumbUri;
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
            thumbUri = Uri.parse(photoData);
        } else {
            final Uri contactUri = Uri.withAppendedPath(Contacts.CONTENT_URI, photoData);
            thumbUri = Uri.withAppendedPath(contactUri, Photo.CONTENT_DIRECTORY);
        }
        afd = GlobalData.instance().getContext().getContentResolver().openAssetFileDescriptor(thumbUri, "r");
        FileDescriptor fileDescriptor = afd.getFileDescriptor();
        if (fileDescriptor != null)
            return BitmapFactory.decodeFileDescriptor(fileDescriptor, null, null);
    } catch (FileNotFoundException e) {
    } finally {
        if (afd != null) {
            try {
                afd.close();
            } catch (IOException e) {
            }
        }
    }
    return null;
}