Question

我想将操作栏标题文本更改为在editText视图中键入的任何内容？

到目前为止，我有这个：


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

       editTextHouse = findViewById(R.id.edit_text_house);

       ActionBar actionBar = getSupportActionBar(); 
       getSupportActionBar().setTitle(editTextHouse);
       String title = actionBar.getTitle().toString(); ```

Answer 1

您好，您可以通过Button Click尝试

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

    Button buttonClick = findViewById(R.id.buttonClick);
    final EditText editTextData = findViewById(R.id.editTextData);

    buttonClick.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
        //this require non null for null string crash  
          Objects.requireNonNull(getSupportActionBar()).setTitle(editTextData.getText().toString());
        }
    });
}

Answer 2

在Edittext上的textChang actionBar标题将被更改，请尝试此操作。

editTextHouse .addTextChangedListener(new TextWatcher() {
            @Override
            public void beforeTextChanged(CharSequence s, int start, int count, int after) {
                // Do some thing now
            }

            @Override
            public void onTextChanged(CharSequence s, int start, int before, int count) {

            }

            @Override
            public void afterTextChanged(Editable s) {
                // Do something at this time
              if (s != null && s.length() > 0) 
                getSupportActionBar().setTitle(s.toString());
            }
        });

Answer 3

使用getSupportActionBar（）。setTitle（editTextHouse.getText（））;为了你在做什么

Answer 4

   editTextHouse = findViewById(R.id.edit_text_house);

   String text = editTextHouse.getText().toString();

   actionBar.setTitle(text);

将文本从可编辑文本转换为字符串，然后将该字符串设置为操作栏的标题。

使用editText gettext更改Android操作栏标题文本

4 个答案: