从联系人那里获取照片

Question

好吧,我只是想学习使用联系信息,但我有点卡住了.我希望能够为联系人显示图片.使用我拥有的以下代码,我如何能够将联系人的照片放在contact_entry中的ImageView中？

ListView contacts_list = (ListView) findViewById(R.id.contacts_list);

// Gets the URI of the db
Uri uri = ContactsContract.Contacts.CONTENT_URI;
// What to grab from the db
String[] projection = new String[] {
        ContactsContract.Contacts._ID,
        ContactsContract.Contacts.DISPLAY_NAME,
        ContactsContract.Contacts.PHOTO_ID
};

String sortOrder = ContactsContract.Contacts.DISPLAY_NAME + " COLLATE LOCALIZED ASC";

Cursor cursor = managedQuery(uri, projection, null, null, sortOrder);

String[] fields = new String[] {
        ContactsContract.Data.DISPLAY_NAME
};

int[] values = { 
        R.id.contactEntryText
};

SimpleCursorAdapter adapter = new SimpleCursorAdapter(this, R.layout.contact_entry, cursor,
        fields, values);
contacts_list.setAdapter(adapter);

contact_entry.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="54px">
    <ImageView
        android:id="@+id/contactPhoto"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" 
        android:src="@drawable/ic_contact_picture_3"/>
    <TextView 
        android:text="@+id/contactEntryText"
        android:id="@+id/contactEntryText"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"/>
</LinearLayout>

Answer 1

可能这会对你有帮助(联系方式确定getId()):

/**
 * @return the photo URI
 */
public Uri getPhotoUri() {
    try {
        Cursor cur = this.ctx.getContentResolver().query(
                ContactsContract.Data.CONTENT_URI,
                null,
                ContactsContract.Data.CONTACT_ID + "=" + this.getId() + " AND "
                        + ContactsContract.Data.MIMETYPE + "='"
                        + ContactsContract.CommonDataKinds.Photo.CONTENT_ITEM_TYPE + "'", null,
                null);
        if (cur != null) {
            if (!cur.moveToFirst()) {
                return null; // no photo
            }
        } else {
            return null; // error in cursor process
        }
    } catch (Exception e) {
        e.printStackTrace();
        return null;
    }
    Uri person = ContentUris.withAppendedId(ContactsContract.Contacts.CONTENT_URI, Long
            .parseLong(getId()));
    return Uri.withAppendedPath(person, ContactsContract.Contacts.Photo.CONTENT_DIRECTORY);
}

用法是:

Uri u = objItem.getPhotoUri();
if (u != null) {
        mPhotoView.setImageURI(u);
} else {
        mPhotoView.setImageResource(R.drawable.ic_contact_picture_2);
}

Answer 2

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;

}

对于contactId您可以使用:

 public static long getContactIDFromNumber(String contactNumber, Context context) {
    String UriContactNumber = Uri.encode(contactNumber);
    long phoneContactID = new Random().nextInt();
    Cursor contactLookupCursor = context.getContentResolver().query(Uri.withAppendedPath(ContactsContract.PhoneLookup.CONTENT_FILTER_URI, UriContactNumber),
            new String[]{ContactsContract.PhoneLookup.DISPLAY_NAME, ContactsContract.PhoneLookup._ID}, null, null, null);
    while (contactLookupCursor.moveToNext()) {
        phoneContactID = contactLookupCursor.getLong(contactLookupCursor.getColumnIndexOrThrow(ContactsContract.PhoneLookup._ID));
    }
    contactLookupCursor.close();

    return phoneContactID;
}

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

Answer 3

不知道为什么但这适用于2.2和4.1:

Uri photoUri = ContentUris.withAppendedId(ContactsContract.Data.CONTENT_URI, Long.parseLong(photoId));
imageView.setImageURI(photoUri);

照片Uri具有以下形式:content://com.android.contacts/data/3345,其中数字是photoId.