メニューは、ClassCastExceptionが

Question

を与えるonOptionsItemSelected

が、現在のメニューのonclickイベントを作成し、ClassCastExceptionが取得し、間違っているものによう

public boolean onCreateOptionsMenu(Menu menu) { 
    MenuInflater inflater = getMenuInflater(); 
    inflater.inflate(R.menu.menu, menu); 
    return true; 
    } 
public void addFunction(){ 

    Intent intent = new Intent(timetable.this,AddEntry.class); 
    startActivity(intent);  
} 
public void deleteFunction(){ 
    Intent intent = new Intent(timetable.this,DeleteEntry.class); 
    startActivity(intent); 
} 
@Override 
public boolean onOptionsItemSelected(MenuItem item) {  
    // Handle item selection  
    switch (item.getItemId()) {   
    case R.id.add:    
    addFunction();   
    return true;   
    case R.id.delete:    
    deleteFunction();    
    return true;   
    default:   
    return super.onOptionsItemSelected(item);  
       } 
    } 
} 

マニフェストファイル

メニューの作成者とのonclickイベントをuncertinイムするイム

<?xml version="1.0" encoding="utf-8"?> 
<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
    package="com.paad.timetable" 
    android:versionCode="1" 
    android:versionName="1.0"> 
    <uses-sdk android:minSdkVersion="8" /> 

<application android:icon="@drawable/icon" android:label="@string/app_name"> 
    <activity android:name=".timetable" 
       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:name="com.paad.timetable.AddEntry" 
       android:label="@string/add"> 
     <intent-filter> 
      <action android:name="android.intent.AddEntry" /> 
      <category android:name="android.intent.category.LAUNCHER" /> 
     </intent-filter> 
    </activity> 

</application> 
</manifest> 

と、メニューのXMLレイアウト

 <?xml version="1.0" encoding="utf-8"?> 
     <menu 
     xmlns:android="http://schemas.android.com/apk/res/android">  
    <item android:id="@+id/add"   
     android:icon="@drawable/add"   
     android:title="@string/add"/> 
     <item android:id="@+id/delete"   
     android:icon="@drawable/delete"  
     android:title="@string/delete" 
    /> 
    </menu> 

そのprobly何か小さなイムミスが、任意のヘルプははるかに高く評価されるだろう:)

を編集：このコードは正常に動作しているログ

05-01 06:31:26.781: ERROR/AndroidRuntime(408): FATAL EXCEPTION: main 
05-01 06:31:26.781: ERROR/AndroidRuntime(408): java.lang.RuntimeException: Unable to 
instantiate activity ComponentInfo 
{com.paad.timetable/com.paad.timetable.AddEntry}:  
java.lang.ClassCastException: com.paad.timetable.AddEntry 
05-01 06:31:26.781: ERROR/AndroidRuntime(408):  at 
android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2585) 
05-01 06:31:26.781: ERROR/AndroidRuntime(408):  at 
android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679) 
05-01 06:31:26.781: ERROR/AndroidRuntime(408):  at 
android.app.ActivityThread.access$2300(ActivityThread.java:125) 
05-01 06:31:26.781: ERROR/AndroidRuntime(408):  at  
android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033) 
05-01 06:31:26.781: ERROR/AndroidRuntime(408):  at  
android.os.Handler.dispatchMessage(Handler.java:99) 
05-01 06:31:26.781: ERROR/AndroidRuntime(408):  at android.os.Looper.loop 
(Looper.java:123) 
05-01 06:31:26.781: ERROR/AndroidRuntime(408):  at android.app.ActivityThread.main 
(ActivityThread.java:4627) 
05-01 06:31:26.781: ERROR/AndroidRuntime(408):  at 
java.lang.reflect.Method.invokeNative(Native Method) 
05-01 06:31:26.781: ERROR/AndroidRuntime(408):  at java.lang.reflect.Method.invoke 
(Method.java:521) 
05-01 06:31:26.781: ERROR/AndroidRuntime(408):  at 
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868) 
05-01 06:31:26.781: ERROR/AndroidRuntime(408):  at  
com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626) 
05-01 06:31:26.781: ERROR/AndroidRuntime(408):  at dalvik.system.NativeStart.main 
(Native Method) 
05-01 06:31:26.781: ERROR/AndroidRuntime(408): Caused by: 
java.lang.ClassCastException: com.paad.timetable.AddEntry 
05-01 06:31:26.781: ERROR/AndroidRuntime(408):  at  
android.app.Instrumentation.newActivity(Instrumentation.java:1021) 
05-01 06:31:26.781: ERROR/AndroidRuntime(408):  at  
android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2577) 
05-01 06:31:26.781: ERROR/AndroidRuntime(408):  ... 11 more 

Answer 1

import android.app.Activity; 
import android.database.sqlite.SQLiteDatabase; 
import android.os.Bundle; 
import android.util.Log; 
import android.view.Menu; 
import android.view.MenuInflater; 
import android.view.MenuItem; 
import android.widget.DatePicker; 
import android.widget.TimePicker; 


public class ScheduleActivity extends Activity { 

SQLiteDatabase db; 

TimePicker timePicker; 

DatePicker datePicker; 

int hour, minute; 

int yr, month, day; 

static String fDate = "DepartureDate"; 

static String fTime = "DEPART_TIME"; 


/** Called when the activity is first created */ 
@Override 
public void onCreate(Bundle savedInstanceState) { 

    super.onCreate(savedInstanceState); 
    setContentView(R.layout.schedule_layout); 

} 


public boolean onCreateOptionsMenu(Menu menu) { 

    MenuInflater inflater = getMenuInflater(); 
    inflater.inflate(R.menu.menu, menu); 
    return true; 
} 


public void addFunction() { 

    Log.i("Add Function", "True"); 
} 


public void deleteFunction() { 

    Log.i("Delete Function", "True"); 
} 


@Override 
public boolean onOptionsItemSelected(MenuItem item) { 

    // Handle item selection 
    switch (item.getItemId()) { 
     case R.id.add: 
      addFunction(); 
      return true; 
     case R.id.delete: 
      deleteFunction(); 
      return true; 
     default: 
      return super.onOptionsItemSelected(item); 
    } 
} 

AddEntryに問題がなければなりません/ deleteEntryアクティビティ