[英]how to get Real Path from Uri?
我想將文件上傳到服務器。 所以我使用文件選擇器。 但是我在某些應用程序中遇到了從 uri 獲取真實路徑的問題。 如果內容是視頻、音頻或圖像,或者我可以直接獲取路徑,我沒有問題。 實施的方法是:
public String getRealAudioPathFromURI(Uri contentUri) {
String[] proj = { MediaStore.Audio.Media.DATA };
//This method was deprecated in API level 11
//Cursor cursor = managedQuery(contentUri, proj, null, null, null);
CursorLoader cursorLoader = new CursorLoader(
this,
contentUri, proj, null, null, null);
Cursor cursor = cursorLoader.loadInBackground();
int column_index =
cursor.getColumnIndexOrThrow(MediaStore.Audio.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
}
它是圖像和視頻的一部分。 但我的問題是當內容采用這種形式時:
content://com.dataviz.dxtg.documentprovider/document/file%3A%2F%2F%2Fmnt%2Fsdcard%2FDownload%2Arbres.png
我試過方法
private String getFilePathFromContentUri(Uri selectedVideoUri,
ContentResolver contentResolver) {
String filePath;
String[] filePathColumn = {MediaStore.MediaColumns.DATA};
Cursor cursor = contentResolver.query(selectedVideoUri, filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
filePath = cursor.getString(columnIndex);
cursor.close();
return filePath;
}
那么如何從 URi 獲取真實路徑以及是否存在其他內容類型。
下面給出了我的真實路徑:
//Uri return from external activity
orgUri = data.getData();
text1.setText("fichier à envoyer " + orgUri.toString() + "\n");
// imagepath = orgUri.toString() ;
//path converted from Uri
//convertedPath = orgUri.getPath();
if(orgUri.toString().contains(IMAGEMEDIA)){
convertedPath = getRealPathFromURI(orgUri);
} else if(orgUri.toString().contains(AUDIOMEDIA)){
convertedPath = getRealAudioPathFromURI(orgUri);
}
else if(orgUri.toString().contains(VIDEOMEDIA)){
convertedPath = getRealvideoPathFromURI(orgUri);
}else {
if(orgUri.toString().contains("content")){
convertedPath = getFilePathFromContentUri(orgUri,
getApplicationContext().getContentResolver());
} else {
convertedPath = orgUri.getPath();
}
}
試試這個
Uri selectedFile = data.getData();
String path = selectedFile.getPath();
這個對我有用。 如果不是讓我通知我還有另一種方法
這對我有用...
public static String getPath(final Context context, final Uri uri) {
final boolean isKitKat = Build.VERSION.SDK_INT >=
Build.VERSION_CODES.KITKAT;
Log.i("URI",uri+"");
String result = uri+"";
// DocumentProvider
// if (isKitKat && DocumentsContract.isDocumentUri(context, uri)) {
if (isKitKat && (result.contains("media.documents"))) {
String[] ary = result.split("/");
int length = ary.length;
String imgary = ary[length-1];
final String[] dat = imgary.split("%3A");
final String docId = dat[1];
final String type = dat[0];
Uri contentUri = null;
if ("image".equals(type)) {
contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
} else if ("video".equals(type)) {
} else if ("audio".equals(type)) {
}
final String selection = "_id=?";
final String[] selectionArgs = new String[] {
dat[1]
};
return getDataColumn(context, contentUri, selection, selectionArgs);
}
else
if ("content".equalsIgnoreCase(uri.getScheme())) {
return getDataColumn(context, uri, null, null);
}
// File
else if ("file".equalsIgnoreCase(uri.getScheme())) {
return uri.getPath();
}
return null;
}
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;
}
這是解碼的問題。 所以解決方案是在方法中添加解碼。 如下所示:
private String getFilePathFromContentUri(Uri selectedVideoUri,
ContentResolver contentResolver) throws UnsupportedEncodingException {
String filePath;
String[] filePathColumn = {MediaStore.MediaColumns.DATA};
Cursor cursor = contentResolver.query(selectedVideoUri, filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
filePath = cursor.getString(columnIndex);
cursor.close();
String result = java.net.URLDecoder.decode(filePath, "UTF-8");
return result;
}
我的活動結果:
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if(resultCode == RESULT_OK){
//image.setImageBitmap(null);
//Uri return from external activity
orgUri = data.getData();
text1.setText("fichier à envoyer " + orgUri.toString() + "\n");
// imagepath = orgUri.toString() ;
//path converted from Uri
//convertedPath = orgUri.getPath();
if(orgUri.toString().contains(IMAGEMEDIA)){
convertedPath = getRealPathFromURI(orgUri);
} else if(orgUri.toString().contains(AUDIOMEDIA)){
convertedPath = getRealAudioPathFromURI(orgUri);
}
else if(orgUri.toString().contains(VIDEOMEDIA)){
convertedPath = getRealvideoPathFromURI(orgUri);
}else {
if(orgUri.toString().contains("content")){
try {
convertedPath = getFilePathFromContentUri(orgUri,
getApplicationContext().getContentResolver());
} catch (UnsupportedEncodingException e) {
e.printStackTrace(); //To change body of catch statement use File | Settings | File Templates.
}
} else {
convertedPath = orgUri.getPath();
}
}
// text2.setText("Real Path: " + convertedPath + "\n");
imagepath = convertedPath;
uriFromPath = Uri.fromFile(new File(convertedPath));
}
}
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