app crashes when two numbers added

Question

I am simply trying to add two numbers, eclipse shows no error in code,the app runs on mobile but when i Press add button, it crashes. I have called the button from activity_main.xml by rightclicking it > other properties> inherited from view on click and named the method whenbuttonisclicked. Please help. package com.sigdel.addtwonumberswork;

package com.sigdel.addtwonumberswork;

import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;

public class MainActivity extends ActionBarActivity {
EditText edittext1;
EditText edittext2;
TextView textview;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    textview = (TextView) findViewById(R.id.textView1);
}
public void whenbuttonisclicked(View view){
    edittext1 = (EditText) findViewById(R.id.editText1);
    String edittext1str = edittext1.getText().toString();
    double editext1dob = Double.parseDouble(edittext1str);
    edittext2 = (EditText) findViewById(R.id.editText2);
    String edittext2str = edittext2.getText().toString();
    double editext2dob = Double.parseDouble(edittext2str);
    double add = (editext1dob + editext2dob);
    String yourDoubleString = String.valueOf(add);
    textview.setText(yourDoubleString);     
}
}

layout code

<EditText
    android:id="@+id/editText1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentLeft="true"
    android:layout_alignParentTop="true"
    android:layout_marginLeft="24dp"
    android:layout_marginTop="46dp"
    android:ems="10"
    android:inputType="number" >

    <requestFocus />
</EditText>

<EditText
    android:id="@+id/editText2"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignLeft="@+id/editText1"
    android:layout_below="@+id/editText1"
    android:layout_marginTop="36dp"
    android:ems="10"
    android:inputType="number" />

<Button
    android:id="@+id/button1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignLeft="@+id/editText2"
    android:layout_centerVertical="true"
    android:layout_marginLeft="56dp"
    android:onClick="whenbuttonisclicked"
    android:text="Add" />

<TextView
    android:id="@+id/textView1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignLeft="@+id/editText2"
    android:layout_below="@+id/button1"
    android:layout_marginLeft="38dp"
    android:layout_marginTop="37dp"
    android:text="See me fucker"
    android:textAppearance="?android:attr/textAppearanceLarge" />

</RelativeLayout>

if you add the stacktrace it should be very easy to diagnose — broschb, Sep 27 '14 at 02:47
09-27 08:35:25.129: W/dalvikvm(12673): threadid=1: thread exiting with uncaught exception (group=0x40d0a438) when i click add buton it says this — Bivek Sigdel, Sep 27 '14 at 02:51
put the rest of what is in the logcat, that you already posted a snippet of — broschb, Sep 27 '14 at 02:54
To learn about stacktrace read this question -> [What is a stacktrace and how can I use it to debug my application errors](http://stackoverflow.com/questions/3988788/what-is-a-stack-trace-and-how-can-i-use-it-to-debug-my-application-errors) — takendarkk, Sep 27 '14 at 02:55
I am being very simple minded.. I just want to add two numbers which take double as inputs and when i click "add" it should display the sum.. @Voicu — Bivek Sigdel, Sep 27 '14 at 02:56
You have to search in your StackTrace (that you must be seeing in LogCat) which line is causing the error. So we can help you efficiently. — joao2fast4u, Sep 27 '14 at 03:00
I took the code and ran it in an app, it works, i'm guessing that you don't have a valid value in one of your edit texts that you are trying to add or when casting to a double — broschb, Sep 27 '14 at 03:04
May be i used stackrace and it hightlighted in green this line of View.class y = a.getDimensionPixelOffset(attr, 0); — Bivek Sigdel, Sep 27 '14 at 03:13
@Bivek Sigdel It must be a line on your code, in MainActivity.java class. — joao2fast4u, Sep 27 '14 at 03:15
Make sure both your edittexts have valid content on them. if one of them is empty, you will get an Exception, trying to parse an empty string to Double. — joao2fast4u, Sep 27 '14 at 03:16
Also, `inputType:number` will only allow you to insert integer numbers, not doubles. Change it to `inputType:numberDecimal`. — joao2fast4u, Sep 27 '14 at 03:20
I restarted eclipse and again ran the app.. It worked thanks friends for such wonderful support. — Bivek Sigdel, Sep 27 '14 at 03:34
You should also look at this question: http://stackoverflow.com/questions/23353173/unfortunately-myapp-has-stopped-how-can-i-solve-this — Code-Apprentice, Sep 27 '14 at 04:01

app crashes when two numbers added

0 Answers0