Ringdroid 레이아웃에 홈 레이아웃을 연결하는 방법 Android

Question

나는 안드로이드 개발의 초보자이며 링 도이드를 선택하여 연습합니다. 내 응용 프로그램에서 나는 버튼과 home.xml라는 이름의 XML 레이아웃을 생성하고 난 Home.class라는 클래스 파일을 만들고이 코드입니다 :

public class Home extends Activity { 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    // TODO Auto-generated method stub 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.home); 

    Button edit = (Button)findViewById(R.id.editor); 


    edit.setOnClickListener (new OnClickListener() { 
     public void onClick(View v){ 

      Intent e = new Intent (v.getContext(), RingdroidSelectActivity.class); 
      startActivityForResult(e,0); 
      } 
     }); 
    } 


} 

내가 누르거나 이동하기 버튼을 클릭

내 질문에 RingdroidSelectActivity "불행히도 Ringdroid가 멈췄습니다."라는 오류가 나타납니다. 이것은 내 안드로이드 매니페스트입니다 :

<?xml version="1.0" encoding="utf-8"?> 
<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
     package="com.ringdroid" 
     android:versionName="2.5" 
     android:versionCode="20500"> 

<uses-sdk android:minSdkVersion="8" 
      android:targetSdkVersion="19" /> 

<uses-permission android:name="android.permission.INTERNET" /> 
<uses-permission android:name="android.permission.READ_CONTACTS" /> 
<uses-permission android:name="android.permission.WRITE_CONTACTS" /> 
<uses-permission android:name="android.permission.WRITE_SETTINGS" /> 
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> 

<application android:label="@string/ringdroid_app_name" 
      android:icon="@drawable/ringdroidlogo"> 


    <activity android:name ="com.ringdroid.home"> 

      <intent-filter> 
      <action android:name="android.intent.action.MAIN" /> 
      <category android:name="android.intent.category.DEFAULT" /> 
      <category android:name="android.intent.category.LAUNCHER" /> 
     </intent-filter> 

     <intent-filter> 
      <action android:name="android.intent.action.GET_CONTENT" /> 
      <category android:name="android.intent.category.DEFAULT" /> 
      <category android:name="android.intent.category.OPENABLE" /> 
      <data android:mimeType="audio/*" /> 
     </intent-filter> 
    </activity> 


    <!-- Main activity that's launched when the user opens Ringdroid. --> 

      <activity android:name="RingdroidSelectActivity"></activity> 


<!-- Activity for actually editing a particular audio file. 
     Controls viewing the waveform, setting the start and end 
     positions, playback, and triggering saving of the output 
     file. --> 
    <activity android:name="RingdroidEditActivity" 
       android:configChanges="orientation|keyboardHidden"> 
     <intent-filter android:label="@string/edit_intent"> 
      <action android:name="android.intent.action.EDIT" /> 
      <data android:mimeType="audio/*" /> 
     </intent-filter> 
    </activity> 

<!-- Activity for choosing a contact to assign a ringtone to. --> 
    <activity android:name="ChooseContactActivity" 
       android:configChanges="orientation|keyboardHidden"> 
    </activity> 



</application> 

그리고 로그 캣 지속 :

01-05 05:01:43.464: D/AndroidRuntime(278): Shutting down VM 
01-05 05:01:43.464: W/dalvikvm(278): threadid=1: thread exiting with uncaught exception    (group=0x4001d800) 
01-05 05:01:43.494: E/AndroidRuntime(278): FATAL EXCEPTION: main 
01-05 05:01:43.494: E/AndroidRuntime(278): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.ringdroid/com.ringdroid.RingdroidSelectActivity}: java.lang.NullPointerException 
01-05 05:01:43.494: E/AndroidRuntime(278): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663) 
01-05 05:01:43.494: E/AndroidRuntime(278): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679) 
01-05 05:01:43.494: E/AndroidRuntime(278): at android.app.ActivityThread.access$2300(ActivityThread.java:125) 
01-05 05:01:43.494: E/AndroidRuntime(278): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033) 
01-05 05:01:43.494: E/AndroidRuntime(278): at android.os.Handler.dispatchMessage(Handler.java:99) 
01-05 05:01:43.494: E/AndroidRuntime(278): at android.os.Looper.loop(Looper.java:123) 
01-05 05:01:43.494: E/AndroidRuntime(278): at android.app.ActivityThread.main(ActivityThread.java:4627) 
01-05 05:01:43.494: E/AndroidRuntime(278): at java.lang.reflect.Method.invokeNative(Native Method) 
01-05 05:01:43.494: E/AndroidRuntime(278): at java.lang.reflect.Method.invoke(Method.java:521) 
01-05 05:01:43.494: E/AndroidRuntime(278): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868) 
01-05 05:01:43.494: E/AndroidRuntime(278): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626) 
01-05 05:01:43.494: E/AndroidRuntime(278): at dalvik.system.NativeStart.main(Native Method) 
01-05 05:01:43.494: E/AndroidRuntime(278): Caused by: java.lang.NullPointerException 
01-05 05:01:43.494: E/AndroidRuntime(278): at com.ringdroid.RingdroidSelectActivity.onCreate(RingdroidSelectActivity.java:109) 
01-05 05:01:43.494: E/AndroidRuntime(278): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) 
01-05 05:01:43.494: E/AndroidRuntime(278): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627) 
01-05 05:01:43.494: E/AndroidRuntime(278): ... 11 more 
01-05 05:01:45.614: I/Process(278): Sending signal. PID: 278 SIG: 9 

Answer 1

당신이 AndroidManifest.xml에 새로운 활동 (RingdroidSelectActivity)을 선언 함을? 그럴 경우 여기에 logcat을 게시하십시오.

편집 : 당신은 어떤 문제를 knwo하지 않는 경우 문제가 라인 (109)

at com.ringdroid.RingdroidSelectActivity.onCreate(RingdroidSelectActivity.java:109)

후이 방법 RingdroidSelectActivity의에서 onCreate에서 NullPointer을() 오순절있다.