textutils

问题 I'm trying to program a simple register application, the user have to fill some fields, where some of them are obligatory. So, I need to check if the user write the info there. I'm doing this: for(RequireFields r : RequireFields.values()){ if(boolValue()){ switch (r.getField()) { case "name": System.out.println("Name"); break; case "surname": System.out.println("Surname"); break; case "pass": System.out.println("Pass"); break; case "email": System.out.println("Email"); break; case "street":

问题 I'm trying to program a simple register application, the user have to fill some fields, where some of them are obligatory. So, I need to check if the user write the info there. I'm doing this: for(RequireFields r : RequireFields.values()){ if(boolValue()){ switch (r.getField()) { case "name": System.out.println("Name"); break; case "surname": System.out.println("Surname"); break; case "pass": System.out.println("Pass"); break; case "email": System.out.println("Email"); break; case "street":

问题 I've added input validation to a set of edit texts in a dialog message using the setError method in Android. But when I test it by leaving some of the edit texts blank and clicking "ok" on the dialog, the dialog closes without triggering a prompt to enter values. Can anyone see what is wrong with this implementation? I think it may be something to do with a call to close the dialog before input validation is triggered. This is how I've set the input validation based on the 4th answer in this

问题 I am retrieving information from a REST API and it displays: "Per 78g - Calories: 221kcal | Fat: 12.65g | Carbs: 16.20g | Protein: 10.88g" I have imported the items into a ListView and when a user clicks an item I would like to string each numeric value individually like below without their text. Based on the example above: String calories = 221; String fat = 12.65; String carbs = 16.20; String protein = 10.88; I got rid of the "Per 78g" with: String sd = food.getString("food_description");

问题 I have a skeleton text file with placeholder strings: blah blah blah blah $PLACEHOLDER_1$ blah $PLACEHOLDER_2$ and so on. Specific "form" of placeholders does not matter -- I may change them to whatever most comfortable for specific implementation. I have a bash script where I know values for placeholders, and I need to generate a new file, with placeholders replaced with values. #! /bin/sh PLACEHOLDER_1 = 'string 1' PLACEHOLDER_2 = 'multiline string 2' # TODO: Generate file output.txt from