Id cannot be found (Resource Issue)

Okay so I'm working on a project and I'm trying to use buttons with text inside of them in an activity, but eclipse can't find the id or chooser.xml

Here's myActivity class

package com.xxxxxxx;

import android.app.Activity;  
import android.content.Intent;  
import android.os.Bundle;   
import android.widget.Button;  
import android.widget.ImageButton;  
import android.view.*;

public class MyActivity extends Activity {`

    private Button mButton1;
    private Button mButton2;
    private Button mButton3;
    private Button mButton4;


        protected void onCreate(Bundle savedInstanceState){
        super.onCreate(savedInstanceState);
                //chooser is underlined (chooser cannot be resolved or is not a field)
        setContentView(R.layout.chooser);
                //all ids are underlined(id cannot be resolved or is not a field)
        mButton1 = (Button) findViewById(R.id.button1);
        mButton2 = (Button) findViewById(R.id.button2);
        mButton3 = (Button) findViewById(R.id.button3);
        mButton4 = (Button) findViewById(R.id.button4);

         mButton1.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
                 Intent myIntent = new Intent(MyActivity.this, Activity2.class);
                 startActivity(myIntent);
             }
         });
         mButton2.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
                 Intent myIntent = new Intent(MyActivity.this, Activty3.class);
                 startActivity(myIntent);
             }
         });

         mButton3.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
                 Intent myIntent = new Intent(MyActivity.this, Activity4.class);
                 startActivity(myIntent);
             }
         });
         mButton4.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
                 Intent myIntent = new Intent(MyActivity.this, Activity5.class);
                 startActivity(myIntent);
             }
         });
             }

    }

Here's the chooser.xml file

     <?xml version="1.0" encoding="utf-8"?>
<LinearLayout  
  xmlns:android="http://schemas.android.com/apk/res/android"  
  android:layout_width="fill_parent"  
  android:layout_height="fill_parent">  

 <Button
     android:id="@+id/button_1"  
     android:layout_height="wrap_content"  
     android:layout_width="wrap_content"  
     android:text="@string/button_1" /> 

   <Button 
   android:text="@string/button_2"   
   android:id="@+id/button_2"   
   android:layout_width="wrap_content"   
   android:layout_height="wrap_content"/>  

   <Button 
   android:id="@+id/button_3"   
   android:layout_width="wrap_content"   
   android:layout_height="wrap_content"  
   android:text="@string/button_3"   
  />

  <Button
     android:id="@+id/button_4"   
     android:layout_height="wrap_content"  
     android:layout_width="wrap_content"  
     android:text="@string/button_4"  
     />  

</LinearLayout>

And here's the string resource xml

 <?xml version="1.0" encoding="utf-8"?>  
<resources> 
    <string name="app_name">Test App</string>  
    <string name="test_image">test.png</string>   
    <string name="button_1">button_1</string>  
    <string name="button_2">button_2</string>  
    <string name="button_3">button_3</string>  
    <string name="button_4">button_4</string>  开发者_开发技巧
</resources>  

---

Your gen files most likely aren't generated yet. Try building it, it should make the lines go away.

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1) You need to import your R class. import <android package>.R Ref: R.id cannot be resolved AND R cannot be resolved - Android error

2) Aren't your R.id.button1 supposed to be R.id.button_1 and so forth for other buttons?

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Is chooser.xml in the correct folder (the default layout folder provided with the project)? Have you perhaps tried to go to Project and choose Clean? Everything looks okay in your code.

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I know this is a very old post, though I still stumbled upon it in my search for a similar problem. When I built the android project, it automatically added:

import android.R;

When I used the advice above,

import <android package>.R;

and I still used R.id....., it still propagated an error. I removed

import android.R;

and no errors.