如何在Android Studio上选择单选按钮

Question

我要制作一个单选按钮，选中该单选按钮，将显示一个编辑文本。

例如，有一个2单选按钮

A. two Edittext appears
B. three edittext appears

我怎么做的？

    public void onRadioButtonClicked(View view) {
    // Is the button now checked?
    boolean checked = ((RadioButton) view).isChecked();

    // Check which radio button was clicked
    switch(view.getId()) {
        case R.id.radio_pirates:
            if (checked)
                // Pirates are the best
            break;
        case R.id.radio_ninjas:
            if (checked)
                // Ninjas rule
            break;
    }
}

Answer 1

准备好3 EditText

    EditText editTextA = null;
    EditText editTextB = null;
    EditText editTextC = null;

当选择一个按钮代码时：

    editTextA.setVisibility(View.VISIBLE);
    editTextB.setVisibility(View.VISIBLE);
    editTextC.setVisibility(View.GONE);

当选择B按钮代码时：

    editTextA.setVisibility(View.VISIBLE);
    editTextB.setVisibility(View.VISIBLE);
    editTextC.setVisibility(View.VISIBLE);

当您选择A按钮时，它只会显示editTextA，B，而当您选择B时，所有

Answer 2

在radioButton使用radioGroup ， radioButton对该radioGroup使用setOnCheckedChangeListener，您将在侦听器中获得checkedId。

.setOnCheckedChangeListener(new OnCheckedChangeListener() {

        @Override
        public void onCheckedChanged (RadioGroup group,int checkedId){

            Log.d("chk", "id" + checkedId);

            if (checkedId == R.id.a) {
                //some code
            } else if (checkedId == R.id.b) {
                //some code
            }
        }
    });