更改文本使用带有 onclicklistener 的 arraylist 通过单击按钮设置 arraylist 中的下一个 textView

Question

NewText = (TextView)view.findViewById(R.id.mainn);
ChangeText = (ImageView)view.findViewById(R.id.ph);

// Create a list of words
ArrayList<String> words = new ArrayList<String>();
words.add("one");
words.add("two");
words.add("three");
words.add("four");
words.add("five");
words.add("six");
words.add("seven");
Words.add("eight");
words.add("nine");
words.add("ten");

ChangeText.setOnClickListener(new View.OnClickListener() {

    @Override
    public void onClick(View view) {

    //what code should I write here to change the text from one to two when I click the button??


      }


    });

Answer 1

我有一段时间没有编码 Java 因为我现在正在编码 Flutter (dart) 但我会尝试。

private int index = 0;

...

ChangeText.setOnClickListener(new View.OnClickListener() {

    @Override
    public void onClick(View view) {

        if (index < words.size()) {
            NewText.setText( (CharSequence) words.get( index + 1 ) );
            index = index+1;
        }

    }

});

Answer 2

如果要循环序列：

if (index < words.size()) {
    NewText.setText( (CharSequence) words.get( index + 1 ) );
    index = index+1;
    return;
}

if (index == words.size()) {
    NewText.setText( (CharSequence) words.get( 0 ) );
    index = 0;
}

Answer 3

ChangeText.setOnClickListener(新View.OnClickListener() {

        @Override
        public void onClick(View view) {
            index = index+1;
            if (index < ayaa.size()) {
                NewText.setText( (CharSequence) ayaa.get( index  ) );
                return;
            }

            if (index == ayaa.size()) {
                NewText.setText( (CharSequence) ayaa.get( 0 ) );
                index = 0;
            }
        }

    });

更改文本使用带有 onclicklistener 的 arraylist 通过单击按钮设置 arraylist 中的下一个 textView

change text use arraylist with onclicklistener to set next textView in arraylist by click the button

android

arraylist

textview

onclicklistener

android-studio