java - 如何等待 TextView 中的特定字符串继续执行下一个方法

Question

我刚刚开始学习，请多多包涵。

我想不断检查我的 TextView 是否等于“tata”，然后检查 doStuff()，但不知道该怎么做...

protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    requestWindowFeature(Window.FEATURE_NO_TITLE);
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
            WindowManager.LayoutParams.FLAG_FULLSCREEN);


    setContentView(R.layout.activity_new_game);


    final Button button1 = (Button) findViewById(R.id.button1);
    final Button button2 = (Button) findViewById(R.id.button2);
    final Button button3 = (Button) findViewById(R.id.button3);

    final TextView tv = (TextView) findViewById(R.id.editText2);


    // SyllableButtonListener appends TextView only if 
    // button.getText().equals("ta")


    button1.setOnClickListener(new SyllableButtonListener(tv, "ta", button1));
    button2.setOnClickListener(new SyllableButtonListener(tv, "ta", button2));
    button3.setOnClickListener(new SyllableButtonListener(tv, "ta", button3));

    // how to do it: ???
    // if(tv.getText.equals("tata")){ doStuff() }


}

任何类型的循环都不起作用。我尝试过使用 Thread，但效果不佳;)

Answer 1

将 TextChangedListener 添加到您的 EditText

//considering it as a EditText instead of Textview since you would know when textView text changes to "tata"

新代码

final EditText editText = (EditText) findViewById(R.id.editText2);

editText.addTextChangedListener(new TextWatcher() {
        @Override
        public void onTextChanged(CharSequence s, int start, int before, int count) {
        }

        @Override
        public void beforeTextChanged(CharSequence s, int start, int count,
                int after) {
        }

        @Override
        public void afterTextChanged(Editable s) {
          if(s.toString().equals("tata")) {
             //do stuff
          }
        }
    });