I've looked at a bunch of posts on this subject, but nothing seems to be working and I've been stuck on this problem for 2 days now. these lines of code are getting red underline on the "R" saying it cannot be resolved as a variable
symbols = (EditText) findViewById(R.id.editText1);
results = (TextView) findViewById(R.id.textView2);
Button button = (Button) findViewById(R.id.button1);
Also this line of code at the bottom of the java file has the same error
getMenuInflater().inflate(R.menu.activity_main, menu);
I created a menu folder under res and a menu.xml file as well. Here's all the code and a screenshot of my environment. I'm not sure which file you need to see so I provided them all just in case.
Screenshot of Environment http://postimg.org/image/6d1l0909r/
MainActivity.Java
package com.example.stocks;
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.widget.Button;
import android.view.View.OnClickListener;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;
import java.net.HttpURLConnection;
import java.net.URL;
import java.io.InputStreamReader;
import java.io.IOException;
import java.io.BufferedReader;
import java.net.MalformedURLException;
import android.os.Handler;
public class MainActivity extends Activity implements Runnable {
String symbolsStr = "";
String resultsStr = "";
EditText symbols = null;
TextView results = null;
final Handler mHandler = new Handler();
final Runnable mUpdateResults = new Runnable() {
public void run() {
results.setText(resultsStr);
}
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
symbols = (EditText) findViewById(R.id.editText1);
results = (TextView) findViewById(R.id.textView2);
Button button = (Button) findViewById(R.id.button1);
button.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
symbolsStr = symbols.getText().toString();
Thread thread = new Thread(MainActivity.this);
thread.start();
}
});
}
@Override
public void run() {
try {
resultsStr = GetQuotes(symbolsStr);
mHandler.post(mUpdateResults);
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
private String GetQuotes(String symbols) throws MalformedURLException,
IOException {
StringBuilder response = new StringBuilder();
// call web service to get results
String urlStr = "http://download.finance.yahoo.com/d/quotes.csv?s="
+ symbols + "&f=nsl1op";
URL url = new URL(urlStr);
HttpURLConnection httpConn = (HttpURLConnection) url.openConnection();
if (httpConn.getResponseCode() == HttpURLConnection.HTTP_OK) {
BufferedReader input = new BufferedReader(new InputStreamReader(
httpConn.getInputStream()), 8192);
String strLine = null;
while ((strLine = input.readLine()) != null) {
response.append(strLine);
response.append("\n");
}
input.close();
}
return response.toString();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
}
activity_main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity" >
<TextView
android:id="@+id/textView1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginLeft="22dp"
android:layout_marginTop="44dp"
android:text="Enter Symbols separated by commas:" />
<EditText
android:id="@+id/editText1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/textView1"
android:layout_below="@+id/textView1"
android:layout_marginTop="16dp"
android:ems="10" />
<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/editText1"
android:layout_below="@+id/editText1"
android:layout_marginTop="44dp"
android:text="Look Up" />
<TextView
android:id="@+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/button1"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:layout_below="@+id/button1"
android:layout_marginTop="33dp"
android:text="Results" />
</RelativeLayout>
strings.xml
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="app_name">StockQuotes</string>
<string name="hello_world">Hello world!</string>
<string name="menu_settings">Settings</string>
</resources>
menu.xml
<?xml version="1.0" encoding="UTF-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
<item android:id="@+id/item1"></item>
<item android:id="@+id/item2"></item>
<item android:id="@+id/item3"></item>
</menu>
android manifest
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.stockquotes"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="16" />
<uses-permission android:name="android.permission.INTERNET"/>
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.example.stockquotes.MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
