我刚开始使用android，但在使用reverseWord方法时遇到了麻烦

Question

I made a method reverseWord that is supposed to reverse an inputted word and display it.

public void reverseEncrypt(View v)
    {

    // Get the input
    EditText input = (EditText) findViewById(R.id.editText);
    TextView output = (TextView) findViewById(R.id.tv_result);
    TextView output2 = (TextView) findViewById(R.id.tv_test);
    output2.setText("Test is complete");

    // Reverse word
    String text = input.getText().toString();
    String word = " ";
    for (int i = text.length(); i > 0; i--)
    {
        word += text.substring(i,i-1);
    }
    output2.setText(text);

    // Output result
    output.setText("Result: " + word);

}

The method works fine until I output the string word or text . Other test outputs work, but when I try to output word or text it crashes. I think it isn't receiving the input correctly, but I am really not sure.

This is probably a relatively easy fix, so any help would be appreciated. If you need anymore information to help me, please do not hesitate.

Answer 1

I did not test it all, but your way of reversing the String did not work for me.

For me this reversed the String and printed it.

String text = "hello";
String reverse = new StringBuffer(text).reverse().toString();
System.out.println(reverse);

if you put that in your code, it should work