Android 从Picasa//Google+;同步文件夹不存在';行不通
我正在尝试从gallery应用程序从Google+同步照片的一个文件夹中获取图像。选择图像后,Uri将被正确传回。但当我试图在存储设备上获取该映像的实际路径以便使用时,它崩溃了。问题似乎特别出在picasa内容提供商上 在Nexus S和Nexus 7以及其他设备上进行了测试 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 }} E/AndroidRuntime(14572):java.lang.RuntimeException:未能传递结果ResultInfo{who=null,request=1,result=-1,data=Intent{dat=content://com.google.android.gallery3d.provider/picasa/item/5427003652908228690 }} 在这里,dat字段似乎正确地传递了Uri,但是当我试图获取图像的位置时,它崩溃了,出现以下错误 W/GalleryProvider(14381): unsupported column: _data 带GalleryProvider(14381):不支持的列:\u数据 Picasa albums的内容提供商似乎没有数据字段 获取位置的代码为: // 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(); //imageUri是上面的Uri。 字符串[]proj={MediaStore.Images.Media.DATA}; Cursor Cursor=context.getContentResolver().query(imageUri,proj,null,null); int column_index=cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA); cursor.moveToFirst(); stringfilepath=cursor.getString(列索引); cursor.close(); 此图像似乎只支持以下列: [用户帐户、picasa id、显示名称、大小、mime类型、日期、纬度、经度、方向] 我们如何获得这张图像的实际位置。如果我们不应该使用此图像,这些图像首先不应该显示给用户。 启动gallery应用程序的目的是: Intent intent = new Intent(); intent.setType("image/*"); intent.setAction(Intent.ACTION_GET_CONTENT); 意图=新意图(); intent.setType(“image/*”); intent.setAction(intent.ACTION\u GET\u CONTENT);Android 从Picasa//Google+;同步文件夹不存在';行不通,android,android-intent,android-contentprovider,Android,Android Intent,Android Contentprovider,我正在尝试从gallery应用程序从Google+同步照片的一个文件夹中获取图像。选择图像后,Uri将被正确传回。但当我试图在存储设备上获取该映像的实际路径以便使用时,它崩溃了。问题似乎特别出在picasa内容提供商上 在Nexus S和Nexus 7以及其他设备上进行了测试 E/AndroidRuntime(14572): java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=1,
大约一年前我也遇到过同样的问题。。我向您展示了我的解决方案(代码非常混乱,请重构它)。 因此,您拥有从gallery返回的图像URI:
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;
}
现在我们需要下载图像的功能:
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;
}
}
ImageInfo是用于存储图像路径及其方向的类
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;
}
}
经过大量的研究,我觉得有太多的变通方法来做一些看起来很简单的事情。所以,我继续写了一个小的库,它处理所有复杂的if-else,并且恰好适用于我能想到的所有可能的场景。试一下,看看这是否有帮助
这是一个初步的实施。虽然它可以处理几乎所有的情况,但可能会有一些bug。如果您使用此库,请让我知道您的反馈,以及是否可以进一步改进。我现在浪费了很多时间,现在我找到了一个解决方案,它在任何情况下都可以工作,而无需在特殊线程中进行任何魔法下载或其他操作。下面的方法从用户选择的内容中返回一个流,它可以处理所有的内容
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;
}
我用这种方法,对我来说很好, 希望这能帮助你 ACTIVITYRESULT_CHOOSEPICTURE是调用startActivity(intent,requestCode)时使用的int 如果以上代码不起作用,请参考此链接。。。它肯定会指引方向
最后以一个经典的解决方案结束…使用Document.util,它涵盖了所有权限:-1-在onActivityResult()中:- 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-您还需要ImageLoader.java中的以下函数:-
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);
}
下面的技巧对我很有效,我在这里做的是,如果URI中有任何权威url,那么我将使用下面的代码创建一个临时图像&返回相同的内容URI 我也回答了类似的问题
根据@drindt answer,下面的代码给出了从Google Photo cloud下载的临时
文件
路径,该路径已同步,但未在设备文件中
@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;
}
_数据字段是图像的内容,我不认为远程图片存储在其中。您可以尝试使用uri从internet获取它。它只返回特定型号的URL。我检查了一部HTC手机,它确实给了我网址,但其他手机没有。但同样,有URL的问题是,当URL不可公开访问时。嘿,看看这个,这可能会对你有所帮助。它不会返回所有设备的URL。而且,如果URL不可公开访问,您将无法下载图像,也就是说,它不与公众共享,但只有少数人可以看到。请给我一个如何测试此情况的示例。我有Nexus7。我该怎么办?尝试附加一张属于只有你才能查看的相册的图像。是的。看来这会有用的。我会检查一下然后回来的。是的,很有效。但是,这是一个KITKAT特定的修复。如果还需要支持旧版本,则仍需要进行一些操作。不过,我对你的答案投了赞成票这不仅仅与KITKAT有关。它处理KITKAT和Older。试试看,它很管用。我们在很多设备上都这样做过,不仅仅是在更新的设备上。在三星设备和所有nexus(仿真器)上为我工作过。但是在Moto和其他两个真实设备上给出了一个“java.io.IOException:read failed:EBADF(坏文件描述符)”做得很好!我在从google+获取图像路径时遇到问题,我尝试了你的库,它工作得非常好。非常感谢你!图像选择器库不适用于gallery的picasa图像,它可以很好地将图像加载到ImageView中,但不能为上传到服务器等情况提供实际的文件路径。。
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);
}
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);
}
@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;
}