问题描述
我的 Activity 有三个 editText 和 一个 button. 如果三个editText都有字，button 就可以按，不然就按不到。问题是我的button一直按不到就算三个editText都有字。
Button buttonSave; public TextWatcher mTextWatcher = new TextWatcher() {@Overridepublic void beforeTextChanged(CharSequence charSequence, int i, int i2, int i3) {}@Overridepublic void onTextChanged(CharSequence charSequence, int i, int i2, int i3) {}@Overridepublic void afterTextChanged(Editable editable) { // check Fields For Empty Values checkFieldsForEmptyValues();} }; @Override protected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);buttonSave = (Button) findViewById(R.id.buttonSave);buttonSave.setBackgroundColor(Color.parseColor('#D3D3D3'));buttonSave.setEnabled(false);editTextName = (EditText) findViewById(R.id.editTextName);editTextPassword = (EditText) findViewById(R.id.editTextPassword);editTextConfirm = (EditText) findViewById(R.id.editTextConfirmPassword);//Click Listener for buttonbuttonSave.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) {String pass = editTextPassword.getText().toString();String confirm = editTextConfirm.getText().toString();String name = editTextName.getText().toString();if ((editTextName.getText().toString().trim().length() == 0) || (editTextPassword.getText().toString().trim().length() == 0) || (editTextConfirm.getText().toString().trim().length() == 0)) { Toast.makeText(getApplicationContext(), 'Field cannot be null', Toast.LENGTH_LONG).show();} else if (!(pass.equals(confirm))) { Toast.makeText(getApplicationContext(), 'password and confirm password not same ', Toast.LENGTH_LONG).show(); Toast.makeText(getApplicationContext(), pass + confirm, Toast.LENGTH_SHORT).show();} else {Intent intent = new Intent(MainActivity.this, AddMonthlyExpenses.class);intent.putExtra('name', name);startActivity(intent); }}); } public void checkFieldsForEmptyValues(){if((editTextName.getText().toString().trim().length() == 0) || (editTextPassword.getText().toString().trim().length() == 0) || (editTextConfirm.getText().toString().trim().length() == 0)){ buttonSave.setEnabled(false); buttonSave.setBackgroundColor(Color.parseColor('#D3D3D3'));} else { buttonSave.setEnabled(true); buttonSave.setBackgroundColor(Color.parseColor('#FFAA66CC'));} }
还有 mTextWatcher never used. 求大侠帮帮忙！
问题解答
回答1：buttonSave.setEnabled(false);，而你的mTextWatcher never used，buttonSave就永远是disable的，那肯定按不到了。
