无法从EditText获取文本并将其显示到TextView

Question

我是编程语言的新手。在android studio中，当用户按下按钮时，我试图从EditText中获取文本显示在TextView上。但它出错了。有人帮我吗？拜托，谢谢。

TextView welcome_lbl;
EditText enter_text;
Button welcome_btn;

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

    welcome_lbl = (TextView) findViewById(R.id.welcome_lbl);
    enter_text = (EditText) findViewById(R.id.enter_text);
    welcome_btn = (Button) findViewById(R.id.welcome_btn);

    welcome_btn.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            welcome_lbl.setText(enter_text.getText().length());
        }
    });

}

Answer 1

  

String text = enter_text.getText.toString（）;

     

welcome_lbl.setText（文本）;

或者按照你的方式，

  

welcome_lbl.setText（enter_text.getText.toString（））;