Android 文件绝对路径和Content开头的Uri互相转换

发布于:2021-10-28 03:28:02

https://www.jianshu.com/p/02fa61d8dbf5





工作中遇到的问题。拍照获取图片后是得到的路径是


file:///storage/emulated/0/Android/data/com.zehin.mingchuliangzao3/cache/PostPicture/20160905182015.jpg


但是我想要的路径是:


content://media/external/images/media/212304

这种 Uri类型的


查阅资料找到如下方法


转Uri


/**
* Gets the content:// URI from the given corresponding path to a file
*
* @param context
* @param imageFile
* @return content Uri
*/
public static Uri getImageContentUri(Context context, java.io.File imageFile) {
String filePath = imageFile.getAbsolutePath();
Cursor cursor = context.getContentResolver().query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
new String[] { MediaStore.Images.Media._ID }, MediaStore.Images.Media.DATA + "=? ",
new String[] { filePath }, null);
if (cursor != null && cursor.moveToFirst()) {
int id = cursor.getInt(cursor.getColumnIndex(MediaStore.MediaColumns._ID));
Uri baseUri = Uri.parse("content://media/external/images/media");
return Uri.withAppendedPath(baseUri, "" + id);
} else {
if (imageFile.exists()) {
ContentValues values = new ContentValues();
values.put(MediaStore.Images.Media.DATA, filePath);
return context.getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values);
} else {
return null;
}
}
}

Uri转绝对路径


/**
* Gets the corresponding path to a file from the given content:// URI
* @param selectedVideoUri The content:// URI to find the file path from
* @param contentResolver The content resolver to use to perform the query.
* @return the file path as a string
*/
public static String getFilePathFromContentUri(Uri selectedVideoUri,
ContentResolver contentResolver) {
String filePath;
String[] filePathColumn = {MediaColumns.DATA};

Cursor cursor = contentResolver.query(selectedVideoUri, filePathColumn, null, null, null);
// 也可用下面的方法拿到cursor
// Cursor cursor = this.context.managedQuery(selectedVideoUri, filePathColumn, null, null, null);

cursor.moveToFirst();

int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
filePath = cursor.getString(columnIndex);
cursor.close();
return filePath;
}


绝对路径转Uri的那个方法 目前是图片文件的转换 转其他文件 只要把content后面的目录换成对应文件的归属目录就行了。。






作者:青檬可乐_

链接:https://www.jianshu.com/p/02fa61d8dbf5

?源:简书

著作权归作者所有。商业转载请联系作者获得授权,非商业转载请注明出处。


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