我有一个onActivityResult从一个mediastore图像选择返回，我可以获得一个图像使用以下URI:
Uri selectedImage = data.getData();
将this转换为字符串会得到:
content://media/external/images/media/47
或路径给出:
/external/images/media/47
然而，我似乎找不到一种方法将其转换为绝对路径，因为我想将图像加载到位图中，而不必复制到某个地方。我知道这可以使用URI和内容解析器来完成，但这似乎在重新启动手机时中断，我猜MediaStore在重新启动之间没有保持其编号相同。
当前回答
试试这个
不过，如果你想要得到真正的答案，你可以试试我的答案。以上答案对我没有帮助。
解释:-这个方法获取URI，然后检查你的Android设备的API级别，根据API级别，它将生成真实路径。生成真实路径方法的代码根据API级别不同而不同。
method to get the Real path from URI @SuppressLint("ObsoleteSdkInt") public String getPathFromURI(Uri uri){ String realPath=""; // SDK < API11 if (Build.VERSION.SDK_INT < 11) { String[] proj = { MediaStore.Images.Media.DATA }; @SuppressLint("Recycle") Cursor cursor = getContentResolver().query(uri, proj, null, null, null); int column_index = 0; String result=""; if (cursor != null) { column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA); realPath=cursor.getString(column_index); } } // SDK >= 11 && SDK < 19 else if (Build.VERSION.SDK_INT < 19){ String[] proj = { MediaStore.Images.Media.DATA }; CursorLoader cursorLoader = new CursorLoader(this, uri, proj, null, null, null); Cursor cursor = cursorLoader.loadInBackground(); if(cursor != null){ int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA); cursor.moveToFirst(); realPath = cursor.getString(column_index); } } // SDK > 19 (Android 4.4) else{ String wholeID = DocumentsContract.getDocumentId(uri); // Split at colon, use second item in the array String id = wholeID.split(":")[1]; String[] column = { MediaStore.Images.Media.DATA }; // where id is equal to String sel = MediaStore.Images.Media._ID + "=?"; Cursor cursor = getContentResolver().query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, column, sel, new String[]{ id }, null); int columnIndex = 0; if (cursor != null) { columnIndex = cursor.getColumnIndex(column[0]); if (cursor.moveToFirst()) { realPath = cursor.getString(columnIndex); } cursor.close(); } } return realPath; } Use this method like this Log.e(TAG, "getRealPathFromURI: "+getPathFromURI(your_selected_uri) );
输出:
04-06 12:39:46,993 6138-6138/com。qtm E/tag: getrealthfro到处都是: /存储/ emulated / 0 /视频/ avengers_infinity_war_4k_8k-7680x4320。jpg
其他回答
public String getPath(Uri uri) {
Cursor cursor = getContentResolver().query(uri, null, null, null, null);
cursor.moveToFirst();
String document_id = cursor.getString(0);
document_id = document_id.substring(document_id.lastIndexOf(":") + 1);
cursor.close();
cursor = getContentResolver().query(
android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
null, MediaStore.Images.Media._ID + " = ? ", new String[]{document_id}, null);
cursor.moveToFirst();
String path = cursor.getString(cursor.getColumnIndex(MediaStore.Images.Media.DATA));
cursor.close();
return path;
}
将文件URI转换为字符串filePath的完美工作方法
Bitmap Bitmap = MediaStore.Images.Media.getBitmap, uri;
这是我的例子获取文件名，从URI file://…内容://... .这是为我工作，不仅与Android MediaStore，而且与第三方应用程序，如EzExplorer。
public static String getFileNameByUri(Context context, Uri uri)
{
String fileName="unknown";//default fileName
Uri filePathUri = uri;
if (uri.getScheme().toString().compareTo("content")==0)
{
Cursor cursor = context.getContentResolver().query(uri, null, null, null, null);
if (cursor.moveToFirst())
{
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);//Instead of "MediaStore.Images.Media.DATA" can be used "_data"
filePathUri = Uri.parse(cursor.getString(column_index));
fileName = filePathUri.getLastPathSegment().toString();
}
}
else if (uri.getScheme().compareTo("file")==0)
{
fileName = filePathUri.getLastPathSegment().toString();
}
else
{
fileName = fileName+"_"+filePathUri.getLastPathSegment();
}
return fileName;
}
对奥利奥
Uri uri = data.getData();
File file = new File(uri.getPath());//create path from uri
final String[] split = file.getPath().split(":");//split the path.
filePath = split[1];//assign it to a string(your choice).
对于Oreo以下的所有版本，我已经做了这个方法，从uri中获取真实路径
@SuppressLint("NewApi")
public static String getFilePath(Context context, Uri uri) throws URISyntaxException {
String selection = null;
String[] selectionArgs = null;
// Uri is different in versions after KITKAT (Android 4.4), we need to
if (Build.VERSION.SDK_INT >= 19 && DocumentsContract.isDocumentUri(context.getApplicationContext(), uri)) {
if (isExternalStorageDocument(uri)) {
final String docId = DocumentsContract.getDocumentId(uri);
final String[] split = docId.split(":");
return Environment.getExternalStorageDirectory() + "/" + split[1];
} else if (isDownloadsDocument(uri)) {
final String id = DocumentsContract.getDocumentId(uri);
uri = ContentUris.withAppendedId(
Uri.parse("content://downloads/public_downloads"), Long.valueOf(id));
} else if (isMediaDocument(uri)) {
final String docId = DocumentsContract.getDocumentId(uri);
final String[] split = docId.split(":");
final String type = split[0];
if ("image".equals(type)) {
uri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
} else if ("video".equals(type)) {
uri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
} else if ("audio".equals(type)) {
uri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
}
selection = "_id=?";
selectionArgs = new String[]{
split[1]
};
}
}
if ("content".equalsIgnoreCase(uri.getScheme())) {
if (isGooglePhotosUri(uri)) {
return uri.getLastPathSegment();
}
String[] projection = {
MediaStore.Images.Media.DATA
};
Cursor cursor = null;
try {
cursor = context.getContentResolver()
.query(uri, projection, selection, selectionArgs, null);
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
if (cursor.moveToFirst()) {
return cursor.getString(column_index);
}
} catch (Exception e) {
e.printStackTrace();
}
} else if ("file".equalsIgnoreCase(uri.getScheme())) {
return uri.getPath();
}
return null;
}
public static boolean isExternalStorageDocument(Uri uri) {
return "com.android.externalstorage.documents".equals(uri.getAuthority());
}
public static boolean isDownloadsDocument(Uri uri) {
return "com.android.providers.downloads.documents".equals(uri.getAuthority());
}
public static boolean isMediaDocument(Uri uri) {
return "com.android.providers.media.documents".equals(uri.getAuthority());
}
public static boolean isGooglePhotosUri(Uri uri) {
return "com.google.android.apps.photos.content".equals(uri.getAuthority());
}
只是对第一个答案进行了简单的更新:mActivity.managedQuery()现在已弃用。我已经用新方法更新了代码。
private String getRealPathFromURI(Uri contentUri) {
String[] proj = { MediaStore.Images.Media.DATA };
CursorLoader loader = new CursorLoader(mContext, contentUri, proj, null, null, null);
Cursor cursor = loader.loadInBackground();
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
String result = cursor.getString(column_index);
cursor.close();
return result;
}
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