Java Android:If语句被跳过,即使条件正确
我是android新手,正在创建一个注册页面。由于android不支持mysql,我创建了一个基于php的脚本,为不同的查询提供整数值Java Android:If语句被跳过,即使条件正确,java,php,android,mysql,if-statement,Java,Php,Android,Mysql,If Statement,我是android新手,正在创建一个注册页面。由于android不支持mysql,我创建了一个基于php的脚本,为不同的查询提供整数值 2 --> successful insertion in database -1 --> Email already used 0--> username used 根据从php脚本获得的响应的整数值,我执行后续任务。即使成功地在数据库中插入了这些值,并且第一个打印语句将Regresult的值显示为“2”,但if语句不起作用,而else i
2 --> successful insertion in database
-1 --> Email already used
0--> username used
根据从php脚本获得的响应的整数值,我执行后续任务。即使成功地在数据库中插入了这些值,并且第一个打印语句将Regresult的值显示为“2”,但if语句不起作用,而else if语句和else if语句都起作用
/* Getting the response back from the PHPAPI and storing it in a variable */
HttpEntity entity = Response.getEntity();
String Regresult = EntityUtils.toString(entity);
/* printing value of Regresult to verify if the condition is right or wrong */
System.out.println(Regresult);
/* Registration depending upon response from Http post call */
/* Email used works fine when Regresult = -1 */
if(Regresult.equals("-1"))
{
Context text = getApplicationContext();
CharSequence message = "Email already in use.";
int duration = Toast.LENGTH_SHORT;
Toast toast = Toast.makeText(text, message, duration);
toast.show();
}
/* Username used work fine when Regresult = 0 */
else if(Regresult.equals("0"))
{
Context text = getApplicationContext();
CharSequence message = "Username already in use.";
int duration = Toast.LENGTH_SHORT;
Toast toast = Toast.makeText(text, message, duration);
toast.show();
}
/* Here is the problem when Regresult= 2 , even though consition is correct the statement don't get executed */
else if(Regresult.equals("2"))
{
Context text = getApplicationContext();
CharSequence message = "Registration Successful.";
int duration = Toast.LENGTH_SHORT;
Toast toast = Toast.makeText(text, message, duration);
toast.show();
System.out.println(Regresult);
}
// I think it may be some spacing problem so try this way
if(Regresult.trim().equals("-1")){
Context text = getApplicationContext();
CharSequence message = "Email already in use.";
int duration = Toast.LENGTH_SHORT;
Toast toast = Toast.makeText(text, message, duration);
toast.show();
}else if(Regresult.trim().equals("0")){
Context text = getApplicationContext();
CharSequence message = "Username already in use.";
int duration = Toast.LENGTH_SHORT;
Toast toast = Toast.makeText(text, message, duration);
toast.show();
}else if(Regresult.trim().equals("2")) {
Context text = getApplicationContext();
CharSequence message = "Registration Successful.";
int duration = Toast.LENGTH_SHORT;
Toast toast = Toast.makeText(text, message, duration); toast.show();
}