android 根据Uri获取文件绝对路径

网上搜索的代码

protected String getAbsoluteImagePath(Uri uri) {
// can post image
String[] proj = { MediaStore.Images.Media.DATA };
Cursor cursor = managedQuery(uri, proj, // Which columns to return
null, // WHERE clause; which rows to return (all rows)
null, // WHERE clause selection arguments (none)
null); // Order-by clause (ascending by name)

int column_index = cursor
.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();


return cursor.getString(column_index);

}

修改后的代码

protected String getAbsoluteImagePath(Uri uri) {
// can post image
String[] proj = { MediaStore.Images.Media.DATA };
Cursor cursor = managedQuery(uri, proj, // Which columns to return
null, // WHERE clause; which rows to return (all rows)
null, // WHERE clause selection arguments (none)
null); // Order-by clause (ascending by name)
if (cursor != null) {
int column_index = cursor
.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();


return cursor.getString(column_index);
} else {

//如果游标为空说明获取的已经是绝对路径了
return uri.getPath();
}
}