How to get a String value from an EditText Int?

Question

Writing this:

note.setOraIn(txtOraIn.getText().toString());

I get this error:

error: incompatible types: String cannot be converted to int
note.setOraIn(txtOraIn.getText().toString());

Indeed txtOraIn is an Integer.

What is the correct syntax to show txtOraIn?

Alternatively, is it possible to perform mathematical operations with the values of the Strings? For example I need to get the result of txtOraFin - txtOraIn, which at the moment are Strings.

This is part of the Notes class:

@ColumnInfo(name = "note_content")
// column name will be "note_content" instead of "content" in table
private String data;
private String oraIn;
private String oraFin;
private String luogo;
private String km;
private String ore;

public Note(String data, String oraIn, String oraFin, String luogo, String km, String ore) {
    this.data = data;
    this.oraIn = oraIn;
    this.oraFin = oraFin;
    this.luogo = luogo;
    this.km = km;
    this.ore = ore;
}

@Ignore
public Note() {
}

public String getData() {
    return data;
}

public void setData(String data) {
    this.data = data;
}

public long getNote_id() {
    return note_id;
}

public void setNote_id(long note_id) {
    this.note_id = note_id;
}

public String getOraIn() {return oraIn;}

public void setOraIn(String oraIn) {this.oraIn = oraIn;}

public String getOraFin() {return oraFin;}

public void setOraFin(String oraFin) {this.oraFin = oraFin;}

public String getLuogo() {
    return luogo;
}

public void setLuogo(String luogo) {
    this.luogo = luogo;
}

public String getKm() {return km;}
public void setKm(String km) {this.km = km;}

public String getOre() {return ore;}
public void setOre(String ore) {this.ore = ore;}

score 0 · Accepted Answer · answered May 18 '20 at 06:22

0

Not sure if this is related to Corda in anyways as its tagged corda.

However, I will try to answer this as it seems to be a generic Java question. To convert a String to an Integer you could use Integer.valueOf(<String>).

So for the above, it becomes note.setOraIn(Integer.valueOf(txtOraIn.getText().toString())).

Also, mathematic operations on String is not possible (in plain Java), unless you write some code to read the values and do the calculations in the background.

answered May 18 '20 at 06:22

Ashutosh Meher

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Hi and thanks, after converting the strings to int in the syntax that you have sugered me, I receive these new errors: Process: com.example.pavneet_singh.roomdemo, PID: 4039 java.lang.NumberFormatException: For input string: "" at java.lang.Integer.parseInt(Integer.java:627) at java.lang.Integer.valueOf(Integer.java:801) etc. etc. – May 18 '20 at 08:29
Is seems the string you are getting is blank so it cant be converted into a number. You could wrap this statement in a try-catch block and take appropriate action if the received string cannot be converted a number. – Ashutosh Meher May 18 '20 at 08:34
For a blank, you may want to initialize it to a default value, but you also need to think about other cases where the value is a random string which can't be converted to an integer. – Ashutosh Meher May 18 '20 at 08:35
Yes, the string was empty simply because I hadn't written anything, but now I get this, What is it about? java.lang.NullPointerException: Attempt to invoke virtual method 'android.text.Editable android.support.design.widget.TextInputEditText.getText()' on a null object reference One last thing, the try-catch block you were telling me where to write it? Always onClick? Thanks – May 18 '20 at 08:42
Try catch is a general way to handle exceptions in Java. For best practices and design patterns that are more android specific, you should tag the question with `android` to get attention from the android community. I am not really familiar with android to suggest this. – Ashutosh Meher May 18 '20 at 08:50

How to get a String value from an EditText Int?

1 Answers1