I am simple sudoku app. My main.xml has 81 EditText and 2 buttons as
shown below.
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android";
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="@color/activity_background">
<EditText
android:id="@+id/text1"
android:layout_width="33dip"
android:layout_height="33dip"
android:background="@color/textBox_background"
android:layout_marginBottom="2dip"
android:layout_marginRight="2dip"
android:layout_marginLeft="2dip"
android:maxLength="1"
android:textColor="@color/textBox_color"
android:numeric="integer"
android:paddingLeft="11dip"
android:selectAllOnFocus="true" />
<EditText
android:id="@+id/text2"
android:layout_width="33dip"
android:layout_height="33dip"
android:background="@color/textBox_background"
android:layout_marginBottom="2dip"
android:layout_marginRight="2dip"
android:maxLength="1"
android:textColor="@color/textBox_color"
android:numeric="integer"
android:paddingLeft="11dip"
android:layout_toRightOf="@id/text1"
android:layout_alignTop="@id/text1"
android:selectAllOnFocus="true" />
<EditText
android:id="@+id/text3"
android:layout_width="33dip"
android:layout_height="33dip"
android:background="@color/textBox_background"
android:layout_marginBottom="2dip"
android:layout_marginRight="4dip"
android:maxLength="1"
android:textColor="@color/textBox_color"
android:numeric="integer"
android:paddingLeft="11dip"
android:layout_toRightOf="@id/text2"
android:layout_alignTop="@id/text1"
android:selectAllOnFocus="true" />
<EditText
android:id="@+id/text4"
android:layout_width="33dip"
android:layout_height="33dip"
android:background="@color/textBox_background"
android:layout_marginBottom="2dip"
android:layout_marginRight="2dip"
android:maxLength="1"
android:textColor="@color/textBox_color"
android:numeric="integer"
android:paddingLeft="11dip"
android:layout_toRightOf="@id/text3"
android:layout_alignTop="@id/text1"
android:selectAllOnFocus="true" />
<EditText
android:id="@+id/text5"
android:layout_width="33dip"
android:layout_height="33dip"
android:background="@color/textBox_background"
android:layout_marginBottom="2dip"
android:layout_marginRight="2dip"
android:maxLength="1"
android:textColor="@color/textBox_color"
android:numeric="integer"
android:paddingLeft="11dip"
android:layout_toRightOf="@id/text4"
android:layout_alignTop="@id/text1"
android:selectAllOnFocus="true" />
<EditText
android:id="@+id/text6"
android:layout_width="33dip"
android:layout_height="33dip"
android:background="@color/textBox_background"
android:layout_marginBottom="2dip"
android:layout_marginRight="4dip"
android:maxLength="1"
android:textColor="@color/textBox_color"
android:numeric="integer"
android:paddingLeft="11dip"
android:layout_toRightOf="@id/text5"
android:layout_alignTop="@id/text1"
android:selectAllOnFocus="true" />
<EditText
android:id="@+id/text7"
android:layout_width="33dip"
android:layout_height="33dip"
android:background="@color/textBox_background"
android:layout_marginBottom="2dip"
android:layout_marginRight="2dip"
android:maxLength="1"
android:textColor="@color/textBox_color"
android:numeric="integer"
android:paddingLeft="11dip"
android:layout_toRightOf="@id/text6"
android:layout_alignTop="@id/text1"
android:selectAllOnFocus="true" />
....
....
....
....
....
<EditText
android:id="@+id/text80"
android:layout_width="33dip"
android:layout_height="33dip"
android:background="@color/textBox_background"
android:layout_marginBottom="2dip"
android:layout_marginRight="2dip"
android:maxLength="1"
android:textColor="@color/textBox_color"
android:numeric="integer"
android:paddingLeft="11dip"
android:layout_toRightOf="@id/text79"
android:layout_alignTop="@id/text73"
android:selectAllOnFocus="true" />
<EditText
android:id="@+id/text81"
android:layout_width="33dip"
android:layout_height="33dip"
android:background="@color/textBox_background"
android:layout_marginBottom="2dip"
android:maxLength="1"
android:textColor="@color/textBox_color"
android:numeric="integer"
android:paddingLeft="11dip"
android:layout_toRightOf="@id/text80"
android:layout_alignTop="@id/text73"
android:selectAllOnFocus="true" />
<Button
android:id="@+id/solveButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/text73"
android:layout_alignParentRight="true"
android:layout_marginTop="10dip"
android:text="Solve" />
<Button
android:id="@+id/resetButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toLeftOf="@id/solveButton"
android:layout_alignTop="@id/solveButton"
android:text="Reset" />
</RelativeLayout>
In my activity class, I have grouped all these 81 EditTexts into one 2-
dimensional array as shown below.
EditText[][] textArray = new EditText[9][9];
textArray[0][0] = (EditText)findViewById(R.id.text1);
textArray[0][1] = (EditText)findViewById(R.id.text2);
textArray[0][2] = (EditText)findViewById(R.id.text3);
textArray[0][3] = (EditText)findViewById(R.id.text4);
textArray[0][4] = (EditText)findViewById(R.id.text5);
textArray[0][5] = (EditText)findViewById(R.id.text6);
textArray[0][6] = (EditText)findViewById(R.id.text7);
textArray[0][7] = (EditText)findViewById(R.id.text8);
textArray[0][8] = (EditText)findViewById(R.id.text9);
textArray[1][0] = (EditText)findViewById(R.id.text10);
textArray[1][1] = (EditText)findViewById(R.id.text11);
textArray[1][2] = (EditText)findViewById(R.id.text12);
textArray[1][3] = (EditText)findViewById(R.id.text13);
...
...
...
textArray[8][8] = (EditText)findViewById(R.id.text81);
Now when I try to do a simple getText() method on textArray[][], it
gives me a runtime error but setText() method works fine on textArray[]
[]
textArray[i][j].getText().toString()
Please help me find out what I am doing wrong or what I need to
change. Thank you in advance.
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