Question

您好，我的内容uri看起来像content://com.android.contacts/contacts/550/photo。

我需要获取给定内容uri的物理文件的句柄。
我查看了stackoverflow上讨论的一些示例，但没有一个工作。

有什么建议吗？

Answer 1

这是一种获取字符串并生成该照片文件并在进程结束时删除文件的方法。像这样使用它： loadContactPhotoThumbnail（“content：//com.android.contacts/contacts/550/photo”）; 。我从here

中获取了大部分代码

     private String loadContactPhotoThumbnail(String photoData) {
    // Creates an asset file descriptor for the thumbnail file.
    AssetFileDescriptor afd = null;
    FileOutputStream outputStream = null;
    InputStream inputStream = null;
    // try-catch block for file not found
    try {
        // Creates a holder for the URI.
        Uri thumbUri;
        // If Android 3.0 or later
        if (Build.VERSION.SDK_INT
                >=
            Build.VERSION_CODES.HONEYCOMB) {
            // Sets the URI from the incoming PHOTO_THUMBNAIL_URI
            thumbUri = Uri.parse(photoData);
        } else {
        // Prior to Android 3.0, constructs a photo Uri using _ID
            /*
             * Creates a contact URI from the Contacts content URI
             * incoming photoData (_ID)
             */
            final Uri contactUri = Uri.withAppendedPath(
                    Contacts.CONTENT_URI, photoData);
            /*
             * Creates a photo URI by appending the content URI of
             * Contacts.Photo.
             */
            thumbUri =
                    Uri.withAppendedPath(
                            contactUri, Photo.CONTENT_DIRECTORY);
        }

    /*
     * Retrieves an AssetFileDescriptor object for the thumbnail
     * URI
     * using ContentResolver.openAssetFileDescriptor
     */
    afd = activity.getContentResolver().
            openAssetFileDescriptor(thumbUri, "r");

    FileDescriptor fdd = afd.getFileDescriptor();
    inputStream = new FileInputStream(fdd);
    File file = File.createTempFile("PhoneContactProvider", "tmp");
    file.deleteOnExit();
    outputStream = new FileOutputStream(file);
    byte[] buffer = new byte[1024];
    int len;
    while ((len = inputStream.read(buffer)) != -1) {
        outputStream.write(buffer, 0, len);
    }
    inputStream.close();
    outputStream.close();
    return "file://" + file.getAbsolutePath();
    } catch (Exception e) {
        App.logger().e(this.getClass().getSimpleName(), e.getMessage());
    }
    // In all cases, close the asset file descriptor
     finally {
        if (afd != null) {
            try {
                afd.close();
            } catch (IOException e) {}
        }
        if (inputStream != null) {
            try {
                inputStream.close();
            } catch (IOException e) {}
        }
        if (outputStream != null) {
            try {
                outputStream.close();
            } catch (IOException e) {}
        }
    }
    return null;
}

注意：使用ANDROID版本4.1.2和4.0.3的仿真器上的这个工作

获取android中联系人照片的文件系统路径

1 个答案: