How to set up a feature in Android that offer suggested words?

You may encounter a feature that tells you whether the Password we have chosen is strong when entering a password for the site when creating a site rejection account. In this case, this feature checks your Password and shows you the related text. In this case, it is possible to check the entered Password and say that your Password is strong or weak, and you should change it to a strong password. All this is done using  TextWatcher. Or you may be faced with automatic settings when filling in fields such as entered username or ... that will give you suggested words by entering the first letter of the word. In this part of the article, we want to tell you how to use TextWatcher in Android app development (in Slovak:  Vývoj aplikácií pre Android  ), and automatic suggested words.

TextWatcher

How TextWatcher works is that it first calculates the length of the text you enter and, depending on the length of the text, says whether the text and the Password you entered are strong or not.

1- We create a new project in  Android Studio  and choose the desired name.

2- The desired name selected for this project in this article is  TextWatcher-Gsm.

3- Apply appropriate changes in the  activity_main.xml section.

4- From the Palette section, we add a LinearLayout to the program and application.

5- Then, we add two TextView numbers to the page. One of them shows the length of the word (Strength) and the other to show the amount of Strength.

6- Then add a TextPlain tool or EditText to the main layer.

7- The complete codes that should be included in the application layer are as follows:

8- Go to  MainActivity.java  and apply the necessary changes there.

9- Define and introduce TextView and EditText globally inside the MainActivity and before the  onCreate () function. Like the following:

10- Inside the onCreate function, using the textViewPasswordStrength ID, we introduce and define TextView, which indicates and specifies password strength.

11- Then, we must add an idea related to Password.

12- You need to transfer the Password value to the  mTextEditorWatcher function.

13- We also create the private final TextWatcher function.

14- Use the before exchanged, and context changed events to perform the necessary operations.

15- The contents of the mTextEditorWatcher function are as follows:

16- The contents and code associated with beforeTextChanged and  onTextChanged  events are as follows:

17- Then, to show us the power of the Password according to the length of the text and Password, we must create and define a new function such as  after exchanged.

18- The complete codes that should be in the MainActivity section are as follows:

19- Then, we must run the program.

20- After running the program, we will see that its power is also shown to us according to the length of the text written in the password field.

Recommended words

You may come across suggested words that the system gives you when you write or fill out forms, such as entering a username. This will speed up the typing process and enter one letter from the suggested words.

If you want to apply this type of setting in the applications you create, by entering letters on the keyboard, the words related to them are also displayed, you can follow the steps below.

Adding this option is a plus because it speeds up the typing process and increases user satisfaction, making it easier for the user to write the text.

This is done on  Android programming  using AutoCompleteTextView, which provides an advanced type of search, and from the words in it, the user finds the word he wants and uses it.

1- We will create a new project in  Android Studio.

2- Choose a name for the created project. The name of this project in this tutorial is  AutoComplete-Gsm.

3- Apply the necessary changes in the  activity_main.xml section.

4- Add AutoCompleteTextView from the Palette to the project.

5- The codes that must be entered to create and configure the  AutoCompleteTextView  tool are as follows:

6- We must make the necessary changes and settings in the  MainActivity.java section.

7- We must define a string inside the onCreate () function.

8- Use the ArrayAdapter to list these strings.

9- For AutoCompleteTextView to be introduced and used in the  Java  part of the program, the lab class must be imported in the code listed below.

10- Then, we must use the  setThreshold method  for acts.

It can be seen in the code above that the number 1 is the input argument of the  setThreshold method. This tells AutoCompleteTextView to start searching and showing suggested words when the first letter is entered. If I enter the number 2 as the argument input of this method, it means that by entering two letters of the word, show the suggested words to the user.

11- Then, we must introduce AutoCompleteTextView.

12- If we want to make changes to their appearance, we can do the following:

13- We run the program.

14- After running the program, we will see that it will display all the words that are related to that letter.

15- If you have made the settings so that the number 2 is the input of the argument, then by entering 2 letters of the word, the suggested words will be shown to you.

Note:

If you want to have a more advanced and complete automatic system to store many words in it and display the letters of the words to them, you must first create a dictionary and put many words in it. Then introduce the created dictionary to AutoComplete using  ArrayAdapet. In this case, more words are displayed to the user by entering letters.