Question

Assigning ids to few edit texts results in the following error :

the error is in the parameters of findViewById token

Here is the line of code that its on

final EditText myEditField = (EditText) findViewById(R.id.percentText1);

…This is the Xml code sorry again to nerd for posting the java…

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/percentText1"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <Button
        android:id="@+id/enterButton"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="224dp"
        android:onClick="onEnterClick"
        android:text="Calculate Tip" />

    <EditText
        android:id="@+id/percentText"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="53dp"
        android:ems="10"
        android:singleLine="true"
        android:text="Percent" />

    <EditText
        android:id="@+id/percentage"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/percentText"
        android:layout_alignParentTop="true"
        android:ems="10"
        android:singleLine="true"
        android:text="Bill Amount" >

        <requestFocus />
    </EditText>

</RelativeLayout>

…The Java Code… The error i figure is that i improperly gave the edit text an id…

package tip.calculator;

import android.os.Bundle;
import android.app.Activity;
import android.content.Context;
import android.view.Menu;
import android.view.MenuItem;
import android.support.v4.app.NavUtils;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.TextView;
import tip.calculator.R;

public class MainActivity extends Activity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        EditText myEditField = (EditText) findViewById(R.id.percentText); //error here 


    }

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

    public void onEnterClick(String args []){


        int percentage;
        int percentageInp;
        int billAmount;
    }


}

Answer 1

Make sure that you dont have this in your imports

import android.R;

Eclipse sometimes imports this class which instead should be

import your.application.packagename.R;

usually this happens when we ctrl+shft+o to fix imports. Eclipse adds the R class when we do that. 🙂

EDIT:

from your new question, there is a spelling error.
Try to paste this line inside the onCreate() method:

EditText myEditField = (EditText) findViewById(R.id.percentText);