我想从Google+的同步的照片的文件夹中的一个得到图库应用程序的图像。 选择图像后，开放的我们正在正确传递回来。 但是，当我试图让存储设备上的图像的实际路径，这样我就可以使用它，它崩溃。 这个问题似乎与Picasa的内容提供商是专门。
测试在Nexus S和Nexus 7和其他器件。
E/AndroidRuntime(14572): java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=1, result=-1, data=Intent { dat=content://com.google.android.gallery3d.provider/picasa/item/5427003652908228690 }}
在这里，DAT场似乎是正确地传递开放的，但是当我尝试获取图像的位置，它与下面的错误崩溃。
W/GalleryProvider(14381): unsupported column: _data
看来，对于Picasa相册内容提供商不具有_data领域。
用于获取位置的代码是：
// imageUri is the Uri from above.
String[] proj = { MediaStore.Images.Media.DATA };
Cursor cursor = context.getContentResolver().query(imageUri, proj,null, null, null);
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
String filePath = cursor.getString(column_index);
cursor.close();
似乎为这一形象得到支持的列有：USER_ACCOUNT，picasa_id，_display_name，_size，MIME_TYPE，datetaken，经度，纬度，方向]
我们如何得到这个图像的实际位置。 如果我们不应该用这个形象的工作， 这些图像不应该被显示在首位用户。
启动图库应用程序的目的是：
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
Answer 1:
现在我浪费了很多时间，现在我发现这在所有的情况下，没有任何神奇的下载特殊的线程或什么有效的解决方案。 下面的方法从用户选择的内容返回一个流，这一点也适用于野外的一切。
FileInputStream getSourceStream(Uri u) throws FileNotFoundException {
FileInputStream out = null;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
ParcelFileDescriptor parcelFileDescriptor =
mContext.getContentResolver().openFileDescriptor(u, "r");
FileDescriptor fileDescriptor = parcelFileDescriptor.getFileDescriptor();
out = new FileInputStream(fileDescriptor);
} else {
out = (FileInputStream) mContext.getContentResolver().openInputStream(u);
}
return out;
}
Answer 2:
大量的研究后，我觉得有太多的变通办法做一些事情，这似乎是很简单的。 所以，我继续写一个能够处理所有复杂的，如果别人的，并发生了，我能想到的所有可能方案工作一个小型图书馆。 不要给它一个尝试，看看是否有所帮助。
http://techdroid.kbeanie.com/2013/03/easy-image-chooser-library-for-android.html
这是一个初步实施。 虽然它处理几乎所有的情况下，可能有一些错误。 如果您使用此库，请让我知道您的反馈和如果在所有它可以是任何进一步改善。
Answer 3:
我面临着同样的问题，大约一年多以前..我告诉你我的解决方案（代码是相当混乱，请重构它）。 所以，你必须像URI这是从画廊返回：
ImageInfo getImage(URI imageUri) {
ImageInfo result = null;
final String[] cursorColumns = {MediaStore.Images.Media.DATA, MediaStore.Images.Media.ORIENTATION};
// some devices (OS versions return an URI of com.android instead of com.google.android
if (imageUri.toString().startsWith("content://com.android.gallery3d.provider")) {
// use the com.google provider, not the com.android provider.
imageUri = Uri.parse(imageUri.toString().replace("com.android.gallery3d","com.google.android.gallery3d"));
}
Cursor cursor = App.getContext().getContentResolver().query(imageUri, cursorColumns, null, null, null);
if (cursor != null) {
int dataColumnIndex = cursor.getColumnIndex(MediaStore.Images.ImageColumns.DATA);
int orientationColumnIndex = cursor.getColumnIndex(MediaStore.Images.ImageColumns.ORIENTATION);
cursor.moveToFirst();
// if it is a picasa image on newer devices with OS 3.0 and up
if (imageUri.toString().startsWith("content://com.google.android.gallery3d")) {
result = new ImageInfo(downloadImage(imageUri), "0");
} else { // it is a regular local image file
result = new ImageInfo(cursor.getString(dataColumnIndex), cursor.getString(orientationColumnIndex));
}
cursor.close();
} else {
result = new ImageInfo(downloadImage(imageUri), "0");
}
return result;
}
现在我们需要的功能，以下载图片：
private String downloadImage(URI imageUri) {
File cacheDir;
// if the device has an SD card
if (android.os.Environment.getExternalStorageState().equals(android.os.Environment.MEDIA_MOUNTED)) {
cacheDir = new File(android.os.Environment.getExternalStorageDirectory(),".OCFL311");
} else {
// it does not have an SD card
cacheDir = App.getContext().getCacheDir();
}
if(!cacheDir.exists()) cacheDir.mkdirs();
File f = new File(cacheDir, PUT_HERE_FILE_NAME_TO_STORE_IMAGE);
try {
InputStream is = null;
if (imageUri.toString().startsWith("content://com.google.android.gallery3d")) {
is = App.getContext().getContentResolver().openInputStream(imageUri);
} else {
is = new URL(imageUri.toString()).openStream();
}
OutputStream os = new FileOutputStream(f);
Utils.InputToOutputStream(is, os);
return f.getAbsolutePath();
} catch (Exception ex) {
Log.d(this.getClass().getName(), "Exception: " + ex.getMessage());
// something went wrong
ex.printStackTrace();
return null;
}
}
的imageinfo是我的同班同学存储路径图像和它的方向。
public static class ImageInfo {
public final String filePath;
public final String imageOrientation;
public ImageInfo(String filePath, String imageOrientation) {
this.filePath = filePath;
if (imageOrientation == null) imageOrientation = "0";
this.imageOrientation = imageOrientation;
}
}
Answer 4:
基于@drindt答案，下面的代码就给下载的临时File从谷歌照片云同步，但并非在设备文件路径。
@SuppressLint("NewApi")
public static String getFilePath(final Context context, final Uri uri) {
// Google photo uri example
// content://com.google.android.apps.photos.contentprovider/0/1/mediakey%3A%2FAF1QipMObgoK_wDY66gu0QkMAi/ORIGINAL/NONE/114919
if ("content".equalsIgnoreCase(uri.getScheme())) {
String result = getDataColumn(context, uri, null, null); //
if (TextUtils.isEmpty(result))
if (uri.getAuthority().contains("com.google.android")) {
try {
File localFile = createImageFile(context, null);
FileInputStream remoteFile = getSourceStream(context, uri);
if(copyToFile(remoteFile, localFile))
result = localFile.getAbsolutePath();
remoteFile.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return result;
}
// File
else if ("file".equalsIgnoreCase(uri.getScheme())) {
return uri.getPath();
}
return null;
}
/**
* Get the value of the data column for this Uri. This is useful for
* MediaStore Uris, and other file-based ContentProviders.
*
* @param context The context.
* @param uri The Uri to query.
* @param selection (Optional) Filter used in the query.
* @param selectionArgs (Optional) Selection arguments used in the query.
* @return The value of the _data column, which is typically a file path.
*/
static String getDataColumn(Context context, Uri uri, String selection,
String[] selectionArgs) {
Cursor cursor = null;
final String column = "_data";
final String[] projection = {
column
};
try {
cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs,
null);
if (cursor != null && cursor.moveToFirst()) {
final int column_index = cursor.getColumnIndexOrThrow(column);
return cursor.getString(column_index);
}
} finally {
if (cursor != null)
cursor.close();
}
return null;
}
/**
* Copy data from a source stream to destFile.
* Return true if succeed, return false if failed.
*/
private static boolean copyToFile(InputStream inputStream, File destFile) {
if (inputStream == null || destFile == null) return false;
try {
OutputStream out = new FileOutputStream(destFile);
try {
byte[] buffer = new byte[4096];
int bytesRead;
while ((bytesRead = inputStream.read(buffer)) >= 0) {
out.write(buffer, 0, bytesRead);
}
} finally {
out.close();
}
return true;
} catch (IOException e) {
return false;
}
}
public static String getTimestamp() {
try {
return new SimpleDateFormat("yyyyMMdd_HHmmss", Locale.ROOT).format(new Date());
} catch (RuntimeException e) {
return new SimpleDateFormat("yyyyMMdd_HHmmss", Locale.getDefault()).format(new Date());
}
}
public static File createImageFile(Context context, String imageFileName) throws IOException {
if (TextUtils.isEmpty(imageFileName))
imageFileName = getTimestamp(); // make random filename if you want.
final File root;
imageFileName = imageFileName;
root = context.getExternalCacheDir();
if (root != null && !root.exists())
root.mkdirs();
return new File(root, imageFileName);
}
public static FileInputStream getSourceStream(Context context, Uri u) throws FileNotFoundException {
FileInputStream out = null;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
ParcelFileDescriptor parcelFileDescriptor =
context.getContentResolver().openFileDescriptor(u, "r");
FileDescriptor fileDescriptor = null;
if (parcelFileDescriptor != null) {
fileDescriptor = parcelFileDescriptor.getFileDescriptor();
out = new FileInputStream(fileDescriptor);
}
} else {
out = (FileInputStream) context.getContentResolver().openInputStream(u);
}
return out;
}
Answer 5:
以下窍门为我工作，我在做什么这里是如果在URI任何权威网址，然后我用下面的代码和返回相同的内容URI创建临时图像。
我已经回答了类似这里的问题以及..
public static String getImageUrlWithAuthority(Context context, Uri uri) {
InputStream is = null;
if (uri.getAuthority() != null) {
try {
is = context.getContentResolver().openInputStream(uri);
Bitmap bmp = BitmapFactory.decodeStream(is);
return writeToTempImageAndGetPathUri(context, bmp).toString();
} catch (FileNotFoundException e) {
e.printStackTrace();
}finally {
try {
is.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
return null;
}
public static Uri writeToTempImageAndGetPathUri(Context inContext, Bitmap inImage) {
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
inImage.compress(Bitmap.CompressFormat.JPEG, 100, bytes);
String path = MediaStore.Images.Media.insertImage(inContext.getContentResolver(), inImage, "Title", null);
return Uri.parse(path);
}
Answer 6:
我用这个方法，对我来说工作得很好，希望这将帮助你....
ACTIVITYRESULT_CHOOSEPICTURE是你调用startActivity（意向，requestCode）当使用INT;
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if(requestCode == ACTIVITYRESULT_CHOOSEPICTURE) {
BitmapFactory.Options options = new BitmapFactory.Options();
final InputStream ist = ontext.getContentResolver().openInputStream(intent.getData());
final Bitmap bitmap = BitmapFactory.decodeStream(ist, null, options);
ist.close();
}
}
如果上面的代码不工作不仅仅是指这个链接...这将切切实实的显示方式
http://dimitar.me/how-to-get-picasa-images-using-the-image-picker-on-android-devices-running-any-os-version/
Answer 7:
最后，采用了经典的解决方案...结束使用Document.util，涵盖了所有权威：-1-内，您的onActivityResult（）： -
case GALLERY_CAPTURE_IMAGE_REQUEST_CODE:
String filePath = DocumentUtils.getPath(MainContainerActivity.this,data.getData();
break;
2 - 创建类DocumentUtils： -
public class DocumentUtils {
@TargetApi(Build.VERSION_CODES.KITKAT)
public static String getPath(final Context context, final Uri uri) {
final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;
// DocumentProvider
if (isKitKat && DocumentsContract.isDocumentUri(context, uri)) {
// ExternalStorageProvider
if (isExternalStorageDocument(uri)) {
final String docId = DocumentsContract.getDocumentId(uri);
final String[] split = docId.split(":");
final String type = split[0];
if ("primary".equalsIgnoreCase(type)) {
return Environment.getExternalStorageDirectory() + "/" + split[1];
}
// TODO handle non-primary volumes
}
// DownloadsProvider
else if (isDownloadsDocument(uri)) {
final String id = DocumentsContract.getDocumentId(uri);
final Uri contentUri = ContentUris.withAppendedId(Uri.parse("content://downloads/public_downloads"), Long.valueOf(id));
return getDataColumn(context, contentUri, null, null);
}
// MediaProvider
else if (isMediaDocument(uri)) {
final String docId = DocumentsContract.getDocumentId(uri);
final String[] split = docId.split(":");
final String type = split[0];
Uri contentUri = null;
if ("image".equals(type)) {
contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
} else if ("video".equals(type)) {
contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
} else if ("audio".equals(type)) {
contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
}
final String selection = "_id=?";
final String[] selectionArgs = new String[]{split[1]};
return getDataColumn(context, contentUri, selection, selectionArgs);
}
}
// MediaStore (and general)
else if ("content".equalsIgnoreCase(uri.getScheme())) {
// Return the remote address
String url;
if (isGooglePhotosUri(uri)) {
url = getDataColumnWithAuthority(context, uri, null, null);
return getDataColumn(context, Uri.parse(url), null, null);
}
return getDataColumn(context, uri, null, null);
}
// File
else if ("file".equalsIgnoreCase(uri.getScheme())) {
return uri.getPath();
}
return null;
}
/**
* Get the value of the data column for this Uri. This is useful for
* MediaStore Uris, and other file-based ContentProviders.
*
* @param context The context.
* @param uri The Uri to query.
* @param selection (Optional) Filter used in the query.
* @param selectionArgs (Optional) Selection arguments used in the query.
* @return The value of the _data column, which is typically a file path.
*/
public static String getDataColumn(Context context, Uri uri, String selection, String[] selectionArgs) {
Cursor cursor = null;
final String column = "_data";
final String[] projection = {column};
try {
cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs, null);
if (cursor != null && cursor.moveToFirst()) {
final int column_index = cursor.getColumnIndexOrThrow(column);
return cursor.getString(column_index);
}
} finally {
if (cursor != null)
cursor.close();
}
return null;
}
/**
* Function for fixing synced folder image picking bug
*
* **/
public static String getDataColumnWithAuthority(Context context, Uri uri, String selection, String[] selectionArgs) {
Bitmap bitmap = null;
InputStream is = null;
if (uri.getAuthority()!=null){
try {
is = context.getContentResolver().openInputStream(uri);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
Bitmap bmp = BitmapFactory.decodeStream(is);
return ImageLoader.getImageUri(context,bmp).toString();
}
return null;
}
/**
* @param uri The Uri to check.
* @return Whether the Uri authority is ExternalStorageProvider.
*/
public static boolean isExternalStorageDocument(Uri uri) {
return "com.android.externalstorage.documents".equals(uri.getAuthority());
}
/**
* @param uri The Uri to check.
* @return Whether the Uri authority is DownloadsProvider.
*/
public static boolean isDownloadsDocument(Uri uri) {
return "com.android.providers.downloads.documents".equals(uri.getAuthority());
}
/**
* @param uri The Uri to check.
* @return Whether the Uri authority is MediaProvider.
*/
public static boolean isMediaDocument(Uri uri) {
return "com.android.providers.media.documents".equals(uri.getAuthority());
}
/**
* @param uri The Uri to check.
* @return Whether the Uri authority is Google Photos.
*/
public static boolean isGooglePhotosUri(Uri uri) {
if(uri.getAuthority()!=null)
return true;
return false;
}
}
3-你也将需要ImageLoader.java:-以下功能
public static Uri getImageUri(Context inContext, Bitmap inImage) {
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
inImage.compress(Bitmap.CompressFormat.JPEG, 100, bytes);
String path = MediaStore.Images.Media.insertImage(inContext.getContentResolver(), inImage, "Title", null);
return Uri.parse(path);
}
文章来源: Getting an image from Gallery on from the Picasa//Google + synced folders doesn't work
