由于我支持我的应用程序到Kitkat版本，现在在这里从库中检索文件的方式是不同的。
我更喜欢这个Android Gallery on KitKat returns different Uri for Intent.ACTION_GET_CONTENT从图库中检索文件并成功运行，但我需要该文件的绝对路径，我正在
content://com.android.providers.media.documents/document/image:2505
对于19以下版本，我们使用uri不同，因为我正在以这种方式获得路径
Cursor cursor = this.getContentResolver().query(originalUri, projection, null, null, null);
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
String fpath = cursor.getString(column_index);
但在19版本中它会给我null值如何获取用户选择的图像文件的绝对路径。
由于
答案 0 :(得分：27)
选择文件后，这是访问绝对路径的一种方法。
以这种方式获取KK（KitKat）的新URI格式的数据之后
content://com.android.providers.media.documents/document/image:2505
只提取文档的ID
if(requestCode == GALLERY_KITKAT_INTENT_CALLED && resultCode == RESULT_OK){
Uri originalUri = data.getData();
final int takeFlags = data.getFlags()
& (Intent.FLAG_GRANT_READ_URI_PERMISSION
| Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
// Check for the freshest data.
getContentResolver().takePersistableUriPermission(originalUri, takeFlags);
/* now extract ID from Uri path using getLastPathSegment() and then split with ":"
then call get Uri to for Internal storage or External storage for media I have used getUri()
*/
String id = originalUri.getLastPathSegment().split(":")[1];
final String[] imageColumns = {MediaStore.Images.Media.DATA };
final String imageOrderBy = null;
Uri uri = getUri();
String selectedImagePath = "path";
Cursor imageCursor = managedQuery(uri, imageColumns,
MediaStore.Images.Media._ID + "="+id, null, imageOrderBy);
if (imageCursor.moveToFirst()) {
selectedImagePath = imageCursor.getString(imageCursor.getColumnIndex(MediaStore.Images.Media.DATA));
}
Log.e("path",selectedImagePath ); // use selectedImagePath
}else if() {
// for older version use existing code here
}
// By using this method get the Uri of Internal/External Storage for Media
private Uri getUri() {
String state = Environment.getExternalStorageState();
if(!state.equalsIgnoreCase(Environment.MEDIA_MOUNTED))
return MediaStore.Images.Media.INTERNAL_CONTENT_URI;
return MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
}
答案 1 :(得分：4)
Pratik的解决方案帮助了我很多。以下是适用于Kitkat 4.4.2的版本。我改变的三件事是
1）使用内容解析器获取路径
2）originalUri.getLastPathSegment（）。split（“：”）[1]给我索引越界，所以我用的是索引0。到目前为止它一直在工作
3）删除了takeflags并检查最新的数据，因为我们正在使用id过滤光标。
try {
Uri originalUri = data.getData();
String pathsegment[] = originalUri.getLastPathSegment().split(":");
String id = pathsegment[0];
final String[] imageColumns = { MediaStore.Images.Media.DATA };
final String imageOrderBy = null;
Uri uri = getUri();
Cursor imageCursor = activity.getContentResolver().query(uri, imageColumns,
MediaStore.Images.Media._ID + "=" + id, null, null);
if (imageCursor.moveToFirst()) {
value = imageCursor.getString(imageCursor.getColumnIndex(MediaStore.Images.Media.DATA));
}
} catch (Exception e) {
Toast.makeText(activity, "Failed to get image", Toast.LENGTH_LONG).show();
}
答案 2 :(得分：2)
Bitmap bitmap = MediaStore.Images.Media
.getBitmap(getActivity().getContentResolver(), uri);
我希望这会对你有所帮助。
答案 3 :(得分：-1)
完美的解决方案：
package utils;
/**
* Created by layer on 4/21/2015.
*/
import android.annotation.TargetApi;
import android.content.ContentUris;
import android.content.Context;
import android.database.Cursor;
import android.net.Uri;
import android.os.Build;
import android.os.Environment;
import android.provider.DocumentsContract;
import android.provider.MediaStore;
public class ImageFilePath {
/**
* Method for return file path of Gallery image
*
* @param context
* @param uri
* @return path of the selected image file from gallery
*/
@TargetApi(Build.VERSION_CODES.KITKAT)
public static String getPath(final Context context, final Uri uri) {
// check here to KITKAT or new version
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];
}
}
// 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
if (isGooglePhotosUri(uri))
return uri.getLastPathSegment();
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 index = cursor.getColumnIndexOrThrow(column);
return cursor.getString(index);
}
} finally {
if (cursor != null)
cursor.close();
}
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) {
return "com.google.android.apps.photos.content".equals(uri
.getAuthority());
}
}
https://github.com/layerlre/Android-Utility-Class/blob/master/utils/ImageFilePath.java
希望对你有用。