我不能把我的ID從我的main.xml文件到我的main.java文件

Question

Main.java

package com.example.lolo; 

import android.R; 
import android.app.Activity; 
import android.os.Bundle; 
import android.widget.TextView; 

public class Main extends Activity{ 

TextView symbolOut; 
TextView priceOut; 
TextView changePercentageOut; 

@Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.main);` 
      //It says that "main could not be resolved or is not in a field  
     symbolOut = (TextView) findViewById(R.id.stockPriceOutput);` 
      //t also says that stockPriceOutput cannot be resolved or is not in a field   
    } 
} 

main.xml中

<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" 
android:paddingBottom="@dimen/activity_vertical_margin" 
android:paddingLeft="@dimen/activity_horizontal_margin" 
android:paddingRight="@dimen/activity_horizontal_margin" 
android:paddingTop="@dimen/activity_vertical_margin" 
tools:context=".Splash" > 

    <Button 
    android:id="@+id/get_quote_button" 
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:layout_alignParentTop="true" 
    android:layout_centerHorizontal="true" 
    android:layout_marginTop="20dp" 
    android:text="Get Quote" /> 

    <TextView 
    android:id="@+id/stockSymbolOutput" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_alignLeft="@+id/get_quote_button" 
    android:layout_below="@+id/stockPriceOutput" 
    android:layout_marginTop="86dp" 
    android:text="Medium Text" 
    android:textAppearance="?android:attr/textAppearanceMedium" /> 

<TextView 
    android:id="@+id/stockPriceOutput" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_alignLeft="@+id/get_quote_button" 
    android:layout_below="@+id/get_quote_button" 
    android:layout_marginTop="18dp" 
    android:text="Medium Text" 
    android:textAppearance="?android:attr/textAppearanceMedium" /> 

<TextView 
    android:id="@+id/stockChangePercentageOutput" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_alignLeft="@+id/stockSymbolOutput" 
    android:layout_alignParentBottom="true" 
    android:layout_marginBottom="92dp" 
    android:text="Medium Text" 
    android:textAppearance="?android:attr/textAppearanceMedium" /> 

</RelativeLayout> 

Android清單

<?xml version="1.0" encoding="utf-8"?> 
<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
package="com.example.lolo" 
android:versionCode="1" 
android:versionName="1.0" > 

<uses-sdk 
    android:minSdkVersion="8" 
    android:targetSdkVersion="17" /> 

<application 
    android:allowBackup="true" 
    android:icon="@drawable/ic_launcher" 
    android:label="@string/app_name" 
    android:theme="@style/AppTheme" > 
    <activity 
     android:name="com.example.lolo.Splash" 
     android:label="@string/app_name" > 
     <intent-filter> 
      <action android:name="android.intent.action.MAIN" /> 

      <category android:name="android.intent.category.LAUNCHER" /> 
     </intent-filter> 
    </activity> 
    <activity android:label="@string/app_name" android:name=".Main"></activity> 
</application> 

</manifest>` 

我一直試圖弄清楚這幾天，所以任何幫助將不勝感激

Answer 1

刪除

import android.R; 

從Main.java。不知何故，導入了錯誤的R。

如果它不能解析後R，確保進口的版本是：

import com.example.lolo.R;