Question

我正在尝试检查我的电子邮件是否与电子邮件类型匹配，如果我的密码长度大于0，那么我使用布尔值来检查，但我认为这看起来很糟糕，因为它总是返回false并且不能在这里将我的java代码更改为true：

private boolean mEmail_Correct = false;
private boolean mPass_Correct = false;

mEmail.addTextChangedListener(new TextWatcher() {
    @Override
    public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
    @Override
    public void onTextChanged(CharSequence s, int start, int before, int count) {}
    @Override
    public void afterTextChanged(Editable s) {
        if (android.util.Patterns.EMAIL_ADDRESS.matcher(s.toString()).matches()){mEmail_Correct = true;}
        else {mEmail_Correct = false;}}});

mPassword.addTextChangedListener(new TextWatcher() {
    @Override
    public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
    @Override
    public void onTextChanged(CharSequence s, int start, int before, int count) {}
    @Override
    public void afterTextChanged(Editable s) {
        if (s.lenght>0){mPass_Correct = true;}
        else {mPass_Correct = false;}}});

if (mEmail_Correct && mPass_Correct){}//I need to make sign in btn light
else {}//I need to make sign in btn dim/faint

//But nothing happen so what can i use instead of private booleans

两个布尔值都返回false所以有没有办法将布尔值更改为true我认为mEmail_Correct = true;不能正常工作。

Answer 1

如果用户正确输入电子邮件和密码，您可以根据用户触发执行所需工作的功能

private boolean mEmail_Correct = false;
private boolean mPass_Correct = false;
mEmail.addTextChangedListener(new TextWatcher() {
  @Override
  public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
  @Override
  public void onTextChanged(CharSequence s, int start, int before, int count) {}
@Override
public void afterTextChanged(Editable s) {
    if (android.util.Patterns.EMAIL_ADDRESS.matcher(s.toString()).matches()){emailWrittenCorrect(true);}
    else {emailWrittenCorrect(false);}}});

mPassword.addTextChangedListener(new TextWatcher() {
   @Override
   public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
   @Override
   public void onTextChanged(CharSequence s, int start, int before, int count) {}
   @Override
    public void afterTextChanged(Editable s) {
        if (s.lenght>0){passwordWrittenCorrect(true);}
        else {passwordWrittenCorrect(false);}}});

private passwordWrittenCorrect(boolean x){
    passwordEmailCheck(null,x);
}
private void emailWrittenCorrect(boolean x){
    passwordEmailCheck(x,null);
}
private passwordEmailCheck(boolean emailStat, boolean passwordStat){
    if(emailStat!=null){
        mEmail_Correct = emailStat;

    }
    if(passwordStat!=null){
        mPass_Correct = passwordStat
    }
    if(emailStat && passwordStat){
       //show button
    }

}

布尔值始终返回false

1 个答案: