Java 仅当字段非空时才进行电子邮件验证
根据我的选择,此代码适用于用户名和手机号码,但不适用于电子邮件验证注意我只想检查电子邮件,它是非空的。如何仅检查电子邮件验证此字段是非空的。**请记住,我知道逻辑,但如何将逻辑放入此代码中,因为**我尝试了几种逻辑,但在电子邮件编辑文本中没有任何作用Java 仅当字段非空时才进行电子邮件验证,java,android,string,android-edittext,email-validation,Java,Android,String,Android Edittext,Email Validation,根据我的选择,此代码适用于用户名和手机号码,但不适用于电子邮件验证注意我只想检查电子邮件,它是非空的。如何仅检查电子邮件验证此字段是非空的。**请记住,我知道逻辑,但如何将逻辑放入此代码中,因为**我尝试了几种逻辑,但在电子邮件编辑文本中没有任何作用 public class Login extends BaseActivity { JSONObject jsonobject; JSONArray jsonarray; private ProgressDialog d
public class Login extends BaseActivity {
JSONObject jsonobject;
JSONArray jsonarray;
private ProgressDialog dialog;
ArrayList<String> arealist;
//ArrayList<GetterSetter> area;
public static final String PREFS_NAME = "MyPrefsFile";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
Button login = (Button) findViewById(R.id.button_register);
login.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View v) {
EditText user = (EditText) findViewById(R.id.editText_enter_name);
EditText mobile = (EditText) findViewById(R.id.editText_mobNo);
EditText email = (EditText) findViewById(R.id.editText_email);
// Check The Validity of empty fields
boolean Resp = validate(new EditText[]{user,mobile});
// Check The Validity of emailID
boolean e_valid = isEmailValid(email.getText());
// Check The Validity of Mobile Numbers
boolean mobile_valid = isMobValid(mobile.getText());
if (Resp && mobile_valid && e_valid) {
PostJson();
} else {
Toast.makeText(Login.this, "Field incorrect..!!!",
Toast.LENGTH_SHORT).show();
}
if (Resp) {
String pass = mobile.getText().toString();
String e_check = email.getText().toString();
if (TextUtils.isEmpty(pass) || pass.length() < 10) {
mobile.setError("Mobile number should be of 10 digits");}
else if (e_check!=null || e_check.length() >=1) {
email.setError("Email Address in invalid format");
Toast.makeText(Login.this,
"Email Address in invalid format",
Toast.LENGTH_SHORT).show();
// Chk Validation of mobile number
if (mobile_valid) {
if (e_valid) {
if (isInternetPresent) {
// setting progress bar to zero
dialog = new ProgressDialog(Login.this);
dialog.setMessage("Please Wait...");
dialog.setIndeterminate(false);
dialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
dialog.setProgressNumberFormat(null);
dialog.setProgress(0);
dialog.show();
// Toast.makeText(Login.this, "Connecting....", Toast.LENGTH_LONG)
// .show();
} else {
Toast.makeText(Login.this, "Unable to connect the server, please check your data settings", Toast.LENGTH_LONG)
.show();
}
}
}
}
}
}
// =====To check the validation of Emails and Empty
// Fields==========//
public boolean isEmailValid(Editable email) {
boolean isValid = false;
String expression = "^(([\\w-]+\\.)+[\\w-]+|([a-zA-Z]{1}|[\\w-]{2,}))@"
+ "((([0-1]?[0-9]{1,2}|25[0-5]|2[0-4][0-9])\\.([0-1]?"
+ "[0-9]{1,2}|25[0-5]|2[0-4][0-9])\\."
+ "([0-1]?[0-9]{1,2}|25[0-5]|2[0-4][0-9])\\.([0-1]?"
+ "[0-9]{1,2}|25[0-5]|2[0-4][0-9])){1}|"
+ "([a-zA-Z]+[\\w-]+\\.)+[a-zA-Z]{2,4})$";
CharSequence inputStr = email;
Pattern pattern = Pattern.compile(expression,
Pattern.CASE_INSENSITIVE);
Matcher matcher = pattern.matcher(inputStr);
if (matcher.matches()) {
isValid = true;
}
return isValid;
}
public boolean isMobValid(Editable mobile) {
boolean isOk = false;
String exp = "^[0-9]{10}$";
CharSequence inputStr = mobile;
Pattern pattern = Pattern
.compile(exp, Pattern.CASE_INSENSITIVE);
Matcher matcher = pattern.matcher(inputStr);
if (matcher.matches()) {
isOk = true;
}
return isOk;
}
public boolean validate(EditText[] fields) {
// TODO Auto-generated method stub
for (int i = 0; i < fields.length; i++) {
EditText currentField = fields[i];
if (currentField.getText().toString().length() <= 0) {
currentField.setError("This field can't be empty");
// Toast.makeText(Login.this, "Enter all the fields..!!!",
// Toast.LENGTH_SHORT).show();
return false;
}
}
return true;
}
});
}
// ==========//
// =========================== Json Object==================//
public void PostJson() {
}
@Override
public void onFailure(Throwable e, String response) {
Log.e("ERROR_LOG", "onFailure request" + e.toString());
Toast.makeText(Login.this, "Error in Connection.....",
Toast.LENGTH_SHORT).show();
}
@Override
public void onFinish() {
// //////// { onFinish body}///////////////////////////////
super.onFinish();
// ////////////////////////////////////////////////////////
}
});
}
}
公共类登录扩展了BaseActivity{
JSONObject JSONObject;
JSONArray JSONArray;
私人对话;
ArrayList区域列表;
//阵列区;
公共静态最终字符串PREFS\u NAME=“MyPrefsFile”;
@凌驾
创建时受保护的void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity\u登录);
按钮登录=(按钮)findViewById(R.id.Button\u寄存器);
login.setOnClickListener(新视图.OnClickListener()
{
@凌驾
公共void onClick(视图v){
EditText用户=(EditText)findViewById(R.id.EditText\u输入\u名称);
EditText mobile=(EditText)findViewById(R.id.EditText\u mobNo);
EditText电子邮件=(EditText)findViewById(R.id.EditText\u电子邮件);
//检查空字段的有效性
boolean Resp=validate(新编辑文本[]{user,mobile});
//检查emailID的有效性
布尔e_valid=isEmailValid(email.getText());
//检查手机号码的有效性
布尔mobile_valid=isMobValid(mobile.getText());
if(Resp&&mobile_有效和e_有效){
PostJson();
}否则{
Toast.makeText(Login.this,“字段不正确..!!!”,
吐司。长度(短)。show();
}
如果(Resp){
String pass=mobile.getText().toString();
字符串e_check=email.getText().toString();
if(TextUtils.isEmpty(pass)| | pass.length()<10){
setError(“手机号码应为10位”);}
else if(e|u check!=null | e|u check.length()>=1){
email.setError(“格式无效的电子邮件地址”);
Toast.makeText(Login.this,
“格式无效的电子邮件地址”,
吐司。长度(短)。show();
//手机号码的Chk验证
如果(移动设备有效){
如果(e_有效){
如果(isInternetPresent){
//将进度条设置为零
dialog=新建ProgressDialog(Login.this);
setMessage(“请稍候…”);
dialog.setUndeterminate(false);
setProgressStyle(ProgressDialog.STYLE_微调器);
setProgressNumberFormat(null);
对话框。设置进度(0);
dialog.show();
//Toast.makeText(Login.this,“Connecting…”,Toast.LENGTH\u LONG)
//.show();
}否则{
Toast.makeText(Login.this,“无法连接服务器,请检查数据设置”,Toast.LENGTH\u LONG)
.show();
}
}
}
}
}
}
//====检查电子邮件和空邮件的验证
//田地==========//
公共邮件有效(可编辑电子邮件){
布尔值isValid=false;
字符串表达式=“^([\\w-]+\\)+[\\w-]+\;([a-zA-Z]{1}\\[\\w-]{2,}])”
+ "((([0-1]?[0-9]{1,2}|25[0-5]|2[0-4][0-9])\\.([0-1]?"
+ "[0-9]{1,2}|25[0-5]|2[0-4][0-9])\\."
+ "([0-1]?[0-9]{1,2}|25[0-5]|2[0-4][0-9])\\.([0-1]?"
+ "[0-9]{1,2}|25[0-5]|2[0-4][0-9])){1}|"
+“([a-zA-Z]+[\\w-]+\\)+[a-zA-Z]{2,4})$”;
CharSequence inputStr=电子邮件;
Pattern=Pattern.compile(表达式,
模式(不区分大小写);
Matcher Matcher=pattern.Matcher(inputStr);
if(matcher.matches()){
isValid=true;
}
返回有效;
}
公共布尔值isMobValid(可编辑移动){
布尔值isOk=false;
字符串exp=“^[0-9]{10}$”;
CharSequence inputStr=移动;
图案
.compile(exp,Pattern.CASE\u不区分大小写);
Matcher Matcher=pattern.Matcher(inputStr);
if(matcher.matches()){
isOk=真;
}
返回isOk;
}
公共布尔值验证(EditText[]字段){
//TODO自动生成的方法存根
for(int i=0;i 如果(currentField.getText().toString().length()您需要检查以下内容:
if (email.getText().toString().equalsIgnoreCase("")) {
// email is empty
} else {
//email is not empty
}
您需要检查以下内容:
if (email.getText().toString().equalsIgnoreCase("")) {
// email is empty
} else {
//email is not empty
}
要验证电子邮件id,请使用Android的默认电子邮件地址
android.util.Patterns.EMAIL_ADDRESS.matcher(your data).matches();
比如说
if (etMail.getText().toString().trim().equals("")) {
Toast.makeText(getApplicationContext(),
"Please enter your e-mail id", Toast.LENGTH_SHORT)
.show();
} else if (!android.util.Patterns.EMAIL_ADDRESS.matcher(
etMail.getText().toString().trim()).matches()) {
Toast.makeText(getApplicationContext(),
"Please enter valid e-mail id", Toast.LENGTH_SHORT)
.show();
}else{
// Do your stuff
}
编辑:
if(user.getText().toString().trim().equals(“”){
Toast.makeText(getApplicationContext(),
“请输入用户名”,Toast
public class Login extends BaseActivity {
JSONObject jsonobject;
JSONArray jsonarray;
private ProgressDialog dialog;
ArrayList<String> arealist;
//ArrayList<GetterSetter> area;
public static final String PREFS_NAME = "MyPrefsFile";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
Button login = (Button) findViewById(R.id.button_register);
login.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View v) {
EditText user = (EditText) findViewById(R.id.editText_enter_name);
EditText mobile = (EditText) findViewById(R.id.editText_mobNo);
EditText email = (EditText) findViewById(R.id.editText_email);
if (user.getText().toString().trim().equals("")) {
Toast.makeText(getApplicationContext(),
"Please enter username", Toast.LENGTH_SHORT)
.show();
} else if (mobile.getText().toString().trim().equals("")) {
Toast.makeText(getApplicationContext(),
"Please enter your mobile number", Toast.LENGTH_SHORT)
.show();
} else if (mobile.getText().length() < 10) {
Toast.makeText(getApplicationContext(),
"Please enter valid mobile number", Toast.LENGTH_SHORT)
.show();
} else if (!email.getText().toString().trim().equals("")) {
if (!android.util.Patterns.EMAIL_ADDRESS.matcher(
email.getText().toString().trim()).matches()) {
Toast.makeText(getApplicationContext(),
"Please enter valid e-mail id", Toast.LENGTH_SHORT)
.show();
}
}else{
// Do your stuff
PostJson();
if (isInternetPresent) {
// setting progress bar to zero
dialog = new ProgressDialog(Login.this);
dialog.setMessage("Please Wait...");
dialog.setIndeterminate(false);
dialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
dialog.setProgressNumberFormat(null);
dialog.setProgress(0);
dialog.show();
// Toast.makeText(Login.this, "Connecting....", Toast.LENGTH_LONG)
// .show();
} else {
Toast.makeText(Login.this, "Unable to connect the server, please check your data settings", Toast.LENGTH_LONG)
.show();
}
}
}
// =====To check the validation of Emails and Empty
// Fields==========//
public boolean isEmailValid(Editable email) {
boolean isValid = false;
String expression = "^(([\\w-]+\\.)+[\\w-]+|([a-zA-Z]{1}|[\\w-]{2,}))@"
+ "((([0-1]?[0-9]{1,2}|25[0-5]|2[0-4][0-9])\\.([0-1]?"
+ "[0-9]{1,2}|25[0-5]|2[0-4][0-9])\\."
+ "([0-1]?[0-9]{1,2}|25[0-5]|2[0-4][0-9])\\.([0-1]?"
+ "[0-9]{1,2}|25[0-5]|2[0-4][0-9])){1}|"
+ "([a-zA-Z]+[\\w-]+\\.)+[a-zA-Z]{2,4})$";
CharSequence inputStr = email;
Pattern pattern = Pattern.compile(expression,
Pattern.CASE_INSENSITIVE);
Matcher matcher = pattern.matcher(inputStr);
if (matcher.matches()) {
isValid = true;
}
return isValid;
}
public boolean isMobValid(Editable mobile) {
boolean isOk = false;
String exp = "^[0-9]{10}$";
CharSequence inputStr = mobile;
Pattern pattern = Pattern
.compile(exp, Pattern.CASE_INSENSITIVE);
Matcher matcher = pattern.matcher(inputStr);
if (matcher.matches()) {
isOk = true;
}
return isOk;
}
public boolean validate(EditText[] fields) {
// TODO Auto-generated method stub
for (int i = 0; i < fields.length; i++) {
EditText currentField = fields[i];
if (currentField.getText().toString().length() <= 0) {
currentField.setError("This field can't be empty");
// Toast.makeText(Login.this, "Enter all the fields..!!!",
// Toast.LENGTH_SHORT).show();
return false;
}
}
return true;
}
});
}
// ==========//
// =========================== Json Object==================//
public void PostJson() {
}
@Override
public void onFailure(Throwable e, String response) {
Log.e("ERROR_LOG", "onFailure request" + e.toString());
Toast.makeText(Login.this, "Error in Connection.....",
Toast.LENGTH_SHORT).show();
}
@Override
public void onFinish() {
// //////// { onFinish body}///////////////////////////////
super.onFinish();
// ////////////////////////////////////////////////////////
}
});
}
}