获取Android中所选图库图像的文件路径和文件名
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【中文标题】获取Android中所选图库图像的文件路径和文件名【英文标题】：Get filepath and filename of selected gallery image in Android 【发布时间】：2013-12-17 21:59:58 【问题描述】：我正在创建一个应用程序，它从图库中上传选定的图像并将其上传到网络服务。 Web 服务需要所选图像的文件名以及文件内容的 base64 编码。我已经设法通过硬编码的文件路径来实现这一点。但是，我正在努力获取图像的真实文件路径。我已经在网上阅读并拥有此代码，但它对我不起作用：
public void onActivityResult(int requestCode, int resultCode, Intent data)
if (resultCode == RESULT_OK)
Uri selectedImageUri = data.getData();
String[] projection = MediaStore.Images.Media.DATA;
try
Cursor cursor = getContentResolver().query(selectedImageUri, projection, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(projection[0]);
String picturePath = cursor.getString(columnIndex);
cursor.close();
Log.d("Picture Path", picturePath);
catch(Exception e)
Log.e("Path Error", e.toString());
我收到此错误：
java.lang.NullPointerException
编辑
忘了提到我正在使用 Kitkat。看来我的问题与 KitKat 相关。我发现这个（见下文）帮助我让我的应用正常工作：
android Gallery on KitKat returns different Uri for Intent.ACTION_GET_CONTENT
【问题讨论】：
在此处粘贴您的 Logcat Stacktrace 您是否将Intent data 设为空？？
@PraveenSharma 你能帮我解决这个详细的赏金问题吗？非常感谢：***.com/questions/62783444/…
【参考方案1】：
试试这个：
Uri selectedImageURI = data.getData();
imageFile = new File(getRealPathFromURI(selectedImageURI));
还有
private String getRealPathFromURI(Uri contentURI)
Cursor cursor = getContentResolver().query(contentURI, null, null, null, null);
if (cursor == null) // Source is Dropbox or other similar local file path
return contentURI.getPath();
else
cursor.moveToFirst();
int idx = cursor.getColumnIndex(MediaStore.Images.ImageColumns.DATA);
return cursor.getString(idx);
【讨论】：
我已经尝试过你的实现，但这也失败了。这是我从 logcat 得到的：E/PathError(27809): java.lang.IllegalStateException: 无法从 CursorWindow 读取第 0 行，列 -1。确保在从光标访问数据之前正确初始化光标。【参考方案2】：试试这个，
file = new File(getPath(outputFileUri));
public String getPath(Uri uri)
String[] projection = MediaStore.Images.Media.DATA ;
@SuppressWarnings("deprecation")
Cursor cursor = managedQuery(uri, projection, null, null, null);
int column_index = cursor
.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
【讨论】：
【参考方案3】：使用下面的代码，
public void onActivityResult(int requestCode, int resultCode, Intent data)
if (resultCode == RESULT_OK)
Uri selectedImageUri = data.getData();
String s = getRealPathFromURI(selectedImageUri);
editText1.setText(s);
下面是你的 getRealPathFromURI 函数，
public String getRealPathFromURI(Uri uri)
String[] projection = MediaStore.Images.Media.DATA ;
@SuppressWarnings("deprecation")
Cursor cursor = managedQuery(uri, projection, null, null, null);
int column_index = cursor
.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
【讨论】：
Logcat 说：E/PathError(29354): java.lang.IllegalArgumentException: column '_data' 不存在 如果您只想显示完整路径，请使用 getRealPathFromURI 函数和现有代码而不是完整代码。 我对我的代码进行了一些编辑，现在应该可以了，请重试。 你能把你的完整活动类代码和logcat一起贴出来吗？ getRealPathFromURI 总是返回 null【参考方案4】：试试这个来获取数据以及文件路径并插入文件夹。
public void onActivityResult(int requestCode, int resultCode, Intent data)
super.onActivityResult(requestCode, resultCode, data);
try
if (resultCode == RESULT_OK)
nav = data.getData();
String[] projection = MediaStore.Images.Media.DATA ;
Cursor cursor = managedQuery(nav, projection, null, null, null);
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
String path= cursor.getString(column_index);
Toast.makeText(getApplicationContext(), path, 500).show();
mBitmap = android.provider.MediaStore.Images.Media.getBitmap(getContentResolver(), nav);
insert(mBitmap);
if (mBitmap != null)
mBitmap.recycle();
mBitmap = null;
catch (Exception e)
e.printStackTrace();
private void insert(Bitmap finalBitmap)
File myDir=new File("/sdcard/saved_images");
myDir.mkdirs();
Random generator = new Random();
int n = 10000;
n = generator.nextInt(n);
String fname = "Image-"+ n +".jpg";
File file = new File (myDir, fname);
if (file.exists ()) file.delete ();
try
FileOutputStream out = new FileOutputStream(file);
finalBitmap.compress(Bitmap.CompressFormat.JPEG, 90, out);
out.flush();
out.close();
File dstFile = new File(file.getParent(), "." + file.getName());
file.renameTo(dstFile);
catch (Exception e)
e.printStackTrace();
【讨论】：
【参考方案5】：如果你像我一样没有准备好本地文件，例如你想让用户有机会拍照然后上传图片，这就是如何做到的。 我是java中的菜鸟，但我有很多编码经验。 *** 帮助我分配，所以现在是我回馈的时候了。
在课堂活动中，您必须声明这两项。 假设你有一个工作上传类和 php 脚本。
注意我没有考虑所有不同的 API 在那里。我正在使用 java 编译器 1.7 和 10 到 18 的 API 范围。
public class Yourproject extends Activity
File imageFile;
File imageFileName;
//This part is needed for decoding the path adres.
private String getRealPathFromURI(Uri contentURI)
String result;
Cursor cursor = getContentResolver().query(contentURI, null, null, null, null);
if (cursor == null) // Source is Dropbox or other similar local file path
result = contentURI.getPath();
else
cursor.moveToFirst();
int idx = cursor.getColumnIndex(MediaStore.Images.ImageColumns.BUCKET_DISPLAY_NAME);
result = cursor.getString(idx);
cursor.close();
return result;
//This is needed for the path name, now you might just want to use one decoding script depending on //your class in total.
//In my case this was the way to go.
//To use one single addres use this line ImageColumns.DATA in the int idx declaration.
private String getRealPathFromNAME(Uri contentNAME)
String result;
Cursor cursor = getContentResolver().query(contentNAME, null, null, null, null);
if (cursor == null) // Source is Dropbox or other similar local file path
result = contentNAME.getPath();
else
cursor.moveToFirst();
int idx = cursor.getColumnIndex(MediaStore.Images.ImageColumns.DISPLAY_NAME);
result = cursor.getString(idx);
cursor.close();
return result;
//Then under protected void onCreate(Bundle savedInstanceState) you place this code to get
//the image and process it.
@Override
protected void onCreate(Bundle savedInstanceState)
//declare the ImageView
final ImageView inputPicture = (ImageView) findViewById(R.id.imageView2);
inputPicture.setImageURI((Uri) getIntent().getExtras().get("picture"));
//here where recieve the image from last page "Putextra" method
try
//here we will get the data and proces it trough to get the real
//address for uploading.
//This is send from a other activity with a Intent.EXTRA_STREAM
//The code looks like this:
/*********"Putextra"*********/
//final ImageView iv = (ImageView) findViewById(R.id.imageView1);
//final Uri thumb = (Uri) getIntent().getExtras().get(Intent.EXTRA_STREAM);
//iv.setImageURI(thumb);
//Sending it to the next activity
//it.putExtra("picture", thumb);
/*********"Putextra"*********/
Uri fileUri = (Uri) getIntent().getExtras().get("picture");
//get
//Uri fileName = (Uri) getIntent().getExtras().get("picture");
//get
imageFile = new File(getRealPathFromURI(fileUri));
//send
imageFileName = new File(getRealPathFromNAME(fileUri));
//send
//i got a exeption Uri fileName, use fileUri twice..
catch (Exception e2)
// TODO Auto-generated catch block
e2.printStackTrace();
//here we will declare the name for furter processing.
final File uploadFilePath = imageFile;
final File uploadFileName = imageFileName;
剩下的就交给你了，如果你走到这一步，我很确定你会完成。
【讨论】：
【参考方案6】：聚会有点晚了，但这是我的代码，希望对您有所帮助。
public void onActivityResult(int requestCode, int resultCode, Intent data)
if (resultCode == RESULT_OK)
Uri selectedImageUri = data.getData( );
String picturePath = getPath( getActivity( ).getApplicationContext( ), selectedImageUri );
Log.d("Picture Path", picturePath);
public static String getPath( Context context, Uri uri )
String result = null;
String[] proj = MediaStore.Images.Media.DATA ;
Cursor cursor = context.getContentResolver( ).query( uri, proj, null, null, null );
if(cursor != null)
if ( cursor.moveToFirst( ) )
int column_index = cursor.getColumnIndexOrThrow( proj[0] );
result = cursor.getString( column_index );
cursor.close( );
if(result == null)
result = "Not found";
return result;
【讨论】：
...就像一个魅力。谢谢 对我来说找不到发生 如果图像未保存，@ajaydhadhal getPath 将返回 not found。检查 uri 路径并找到文件以查看它是否存在。 返回“未找到”； 是的，为什么找不到？【参考方案7】：希望对你有帮助
if (Build.VERSION.SDK_INT <19)
Intent intent = new Intent();
intent.setType("image/jpeg");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent,
getResources().getString(R.string.select_picture)),GALLERY_INTENT_CALLED);
else
Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT);
intent.addCategory(Intent.CATEGORY_OPENABLE);
intent.setType("image/jpeg");
startActivityForResult(intent, GALLERY_KITKAT_INTENT_CALLED);
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data)
super.onActivityResult(requestCode, resultCode, data);
if (resultCode != Activity.RESULT_OK) return;
if (null == data) return;
Uri originalUri = null;
if (requestCode == GALLERY_INTENT_CALLED)
originalUri = data.getData();
else if (requestCode == GALLERY_KITKAT_INTENT_CALLED)
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);
loadSomeStreamAsynkTask(originalUri);
【讨论】：
【参考方案8】：在你的项目中添加这个类
ImageFilePath.java
import android.annotation.SuppressLint;
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;
//import android.provider.<span id="IL_AD11" class="IL_AD">MediaStore</span>;
@SuppressLint("NewApi")
@TargetApi(Build.VERSION_CODES.KITKAT)
public class ImageFilePath
/**
* Method for return file path of Gallery image
*
* @param context
* @param uri
* @return path of the selected image file from gallery
*/
static String nopath = "Select Video Only";
@TargetApi(Build.VERSION_CODES.KITKAT)
@SuppressLint("NewApi")
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 nopath;
/**
* Get the value of the data column for this Uri. This is <span id="IL_AD2"
* class="IL_AD">useful</span> 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 nopath;
/**
* @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());
在你的 onActivityResult
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data)
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == PICK_IMAGE_REQUEST && resultCode == RESULT_OK && data != null && data.getData() != null)
Uri uri = data.getData();
realPath = ImageFilePath.getPath(SignupActivity.this, data.getData());
// realPath = RealPathUtil.getRealPathFromURI_API19(this, data.getData());
Log.i(TAG, "onActivityResult: file path : " + realPath);
try
Bitmap bitmap = MediaStore.Images.Media.getBitmap(getContentResolver(), uri);
// Log.d(TAG, String.valueOf(bitmap));
ImageView imageView = (ImageView) findViewById(R.id.img_profile);
imageView.setImageBitmap(bitmap);
imageView.setVisibility(View.VISIBLE);
catch (IOException e)
e.printStackTrace();
else
Toast.makeText(this, "Something Went Wrong", Toast.LENGTH_SHORT).show();
【讨论】：
很高兴听到@Muklas 10+ !!选择下载的文档时出现问题。你已经解决了兄弟。谢谢 我曾经在某些设备上遇到空路径问题，该代码适用于我迄今为止测试过的所有设备 是的，我也面临这个问题，这就是我想出这个答案的原因 优秀...仍在使用 Android 11 targetSDK 29【参考方案9】：public class RealFilePath
/**
* Get a file path from a Uri. This will get the the path for Storage Access
* Framework Documents, as well as the _data field for the MediaStore and
* other file-based ContentProviders.
*
* @param context The context.
* @param uri The Uri to query
*/
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
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());
【讨论】：
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