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POProblems from Editable (EditText) to Integers
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  1. POProblems from Editable (EditText) to Integers
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    copied!<p>I am having problems getting the integer values for a simple math program out of the edittext boxes. I can get a string out of it but when I try to convert it to a integer it crashes. I have tried:</p> <pre><code>int a = Intger.parseInt(X2.getText().toString()); </code></pre> <p>and it still crashes. Any idea's would be greatly appreciated. Here is source code.</p> <pre><code>package siu.edu.cs215; import android.app.Activity; import android.content.Intent; import android.os.Bundle; import android.view.View; import android.widget.*; public class Quadratic extends Activity { private TextView answer; private EditText X2, X, K; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.quad); Button1 = (Button)findViewById(R.id.quad); Button2 = (Button)findViewById(R.id.backwards); answer = (TextView)findViewById(R.id.B1); X2 = (EditText)findViewById(R.id.xsquared); X = (EditText)findViewById(R.id.xcoeff); K = (EditText)findViewById(R.id.kconst); } public Button Button1 = null; public Button Button2 = null; public void QA (View view){ //double sol1=0.0, sol2=0.0, disc=0.0; int a = Integer.parseInt(X2.getText().toString()); //int b = Integer.getInteger(X.getText().toString()); //int c = Integer.getInteger(K.getText().toString()); //disc = Math.pow(b, 2) - 4.0*a*c; //sol1 = (-b + Math.sqrt(disc)) / (2.0 * a); //sol2 = (-b - Math.sqrt(disc)) / (2.0 * a); answer.setText(a); }; public void BACK (View view){ Intent i = new Intent(this, ExtraCreditActivity.class); startActivity(i); } } </code></pre> <p>Here is the xml file </p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" &gt; &lt;TableLayout android:id="@+id/tableLayout1" android:layout_width="match_parent" android:layout_height="0dp" android:layout_weight="1" &gt; &lt;TableRow android:id="@+id/tableRow2" android:layout_width="wrap_content" android:layout_height="0dp" android:layout_weight=".6" &gt; &lt;/TableRow&gt; &lt;TableRow android:id="@+id/tableRow1" android:layout_width="wrap_content" android:layout_height="0dp" android:layout_weight="1" &gt; &lt;EditText android:id="@+id/xsquared" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_marginLeft="10dp" android:layout_weight="1" android:inputType="number" /&gt; &lt;TextView android:layout_width="0dp" android:layout_height="wrap_content" android:layout_margin="0dp" android:layout_weight="1" android:gravity="center" android:text="X^2 +" android:textSize="20dp" /&gt; &lt;EditText android:id="@+id/xcoeff" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:inputType="number" /&gt; &lt;TextView android:layout_width="0dp" android:layout_height="wrap_content" android:layout_marginLeft="10dp" android:layout_weight="1" android:gravity="center" android:text="X + " android:textSize="20dp" /&gt; &lt;EditText android:id="@+id/kconst" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_marginRight="10dp" android:layout_weight="1" android:inputType="number" &gt; &lt;requestFocus /&gt; &lt;/EditText&gt; &lt;/TableRow&gt; &lt;TableRow android:id="@+id/tableRow3" android:layout_width="wrap_content" android:layout_height="0dp" android:layout_weight="1.2" &gt; &lt;Button android:id="@+id/quad" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:onClick="QA" android:text="Quadratic" /&gt; &lt;/TableRow&gt; &lt;TableRow android:id="@+id/tableRow4" android:layout_width="wrap_content" android:layout_height="0dp" android:layout_weight=".8" &gt; &lt;TextView android:id="@+id/B1" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_marginBottom="2pt" android:text="@string/app_name" /&gt; &lt;/TableRow&gt; &lt;TableRow android:id="@+id/tableRow5" android:layout_width="wrap_content" android:layout_height="wrap_content" &gt; &lt;Button android:id="@+id/backwards" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Back" android:onClick="BACK" /&gt; &lt;/TableRow&gt; &lt;/TableLayout&gt; &lt;/LinearLayout&gt; </code></pre>
 

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