Add a vowel at a time in a TextView

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Add a vowel at a time in a TextView

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#1 by (2 votes)

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I have 5 buttons that emulate vowels, how does each button add a vowel at a time to a viewer, set to TextView ?

java android

asked by anonymous 13.05.2018 / 12:31

1 answer

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score 2 · Answer 1

Display the 5 buttons and a TexTView.

Implement the View.OnClickListener class.

Set the event of this class for each button.

When triggering the event, use a switch command to manipulate the buttons.

With an auxiliary "Text" string, the vowels are concatenated. At the end of the event the TextView is set.

private Button btnA, btnE, btnI, btnO, btnU;
private TextView textView;
private String Texto="";

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    textView = (TextView) findViewById(R.id.texto);

    btnA = (Button) findViewById(R.id.btnA);
    btnE = (Button) findViewById(R.id.btnE);
    btnI = (Button) findViewById(R.id.btnI);
    btnO = (Button) findViewById(R.id.btnO);
    btnU = (Button) findViewById(R.id.btnU);

    btnA.setOnClickListener(this);
    btnE.setOnClickListener(this);
    btnI.setOnClickListener(this);
    btnO.setOnClickListener(this);
    btnU.setOnClickListener(this);
}

@Override
public void onClick(View view) {
    switch (view.getId()){
        case R.id.btnA:
            Texto += "A";
        break;
        case R.id.btnE:
            Texto += "E";
            break;
        case R.id.btnI:
            Texto += "I";
            break;
        case R.id.btnO:
            Texto += "O";
            break;
        case R.id.btnU:
            Texto += "U";
            break;
    }
    textView.setText(Texto);
}

This is the way I would do it today. There are other ways to accomplish this.

Screenshot: link