Question

I have a simple application that has one edittext field, and one button. The button I want to take in the value of the edittext field and store it into a string (to parse later). But I am stuck at even reading the value using the method getEditableText(). I am printing out the value to Log.d() but the value appears to be empty or at least an empty string. Where am I going wrong?

activity_main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="26dp"
        android:text="@string/title"
        tools:context=".MainActivity" />

    <EditText
        android:id="@+id/editText1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/textView1"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="38dp"
        android:inputType="text"
        android:ems="10" />

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/editText1"
        android:layout_centerHorizontal="true"
        android:text="@string/button1"
        android:onClick="createarray" />

</RelativeLayout>

MainActivity.java

package com.example.hw1;
import android.os.Bundle;
import android.app.Activity;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends Activity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }

    int[] numberarray;

    public void createarray(View v){
       setContentView(R.layout.activity_main);
       //EditText editText1 = (EditText)findViewById(R.id.editText1);
       //Toast.makeText(this,editText1.getText().toString(),
       //Toast.LENGTH_SHORT).show();
       //String etoutput = editText1.getText().toString();
       String etoutput = ((EditText)findViewById(R.id.editText1)).getEditableText().toString().trim();
       Log.d("etoutput",etoutput);
       if(etoutput.length() > 0){
           Log.d("etoutput length","its got something");
       }
       else{
           Log.d("etoutput length","EMPTY!!");
       }
       //Log.d("etoutput","in here");
       //Log.d("etoutput",etoutput);
       String[] sepetoutput = etoutput.split("[\\s,]+");

       numberarray = new int[sepetoutput.length];

       for (int i=0;i<sepetoutput.length;i++){
           try{
               Log.d("i",Integer.toString(i));
               numberarray[i] = Integer.parseInt(sepetoutput[i]);
           }catch(NumberFormatException nfe){          

           }
       }

       Toast.makeText(this,"Array size: " + numberarray.length,
               Toast.LENGTH_SHORT).show();
      ((EditText)findViewById(R.id.editText1)).setText("123456");

    }
}

Answer 1

You are invoking setContentView() each time you press the button. This action will reset the EditText to the state you defined on your Xml Layout (which is empty). Remove that line on your createarray method and you should get what you want.