如何从混杂的EditText一个字并应用混乱的字变成一个TextView [英] How to jumble a word from EditText and apply the jumbled word into a TextView

问题描述

我需要知道如何混杂进入的EditText一个字。

I need to know how to jumble a word entered into EditText.

的杂乱字将显示在相同的接口的另一TextView的。

The jumbled word will show in another TextView in the same interface.

我也试过这样做，但我得到一个强制关闭错误。这是我在按钮中尝试：

I have tried to do this but I get a force close error. This is what I have tried within the button:

wordE = (EditText)findViewById(R.id.entry); 
jumble = (TextView) findViewById(R.id.jumble);
Button link5Btn = (Button)findViewById( R.id.selected );
link5Btn.setOnClickListener( new View.OnClickListener()
{
public void onClick(View v)
    {
jumbleMe(al);
}

哪个调用方法：

private void jumbleMe( String word ){

al = wordE.getText().toString(); 
ArrayList<Character> al = new ArrayList<Character>();
for (int i = 0; i < wordE.length(); i++) {
    al.add(word.charAt(i));
}
Collections.shuffle(al);

jumble.setText( al.toString() );
}

我想AP preciate有这方面的帮助。谢谢

I would appreciate any help on this. Thanks

推荐答案

您犯了一些错误。

试着改变code为：

    link5Btn.setOnClickListener(new View.OnClickListener() {
        public void onClick(View v) {
            jumbleMe(wordE.getText().toString());
        }
    });

和

private void jumbleMe(String word) {
    ArrayList<Character> al = new ArrayList<Character>();
    for (int i = 0; i < wordE.length(); i++) {
        al.add(word.charAt(i));
    }
    Collections.shuffle(al);
    String result = "";
    for (Character character : al) {
        result += character;
    }

    jumble.setText(result);
}

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