startactivity（）關閉應用程序下來

我有以下活動，時startactivity（）被調用的應用程序被強制關閉，我正在尋找失敗已經是幾天，任何人可以幫助我嗎？startactivity（）關閉應用程序下來

應用：

package com.example.deceunincktechniekers; 

import android.app.ListActivity; 
import android.content.Intent; 
import android.os.Bundle; 
import android.view.View; 
import android.widget.ArrayAdapter; 
    import android.widget.ListView; 



public class OpeningsMenu extends ListActivity { 
//hier maken we de Array (lijst) met de namen die in de menu moeten komen 
String classes[] = {"bezoekrapporten" ,"BTWcontrole" ,"voorbeeld3"}; 


// hier zetten we de layout van deze class niet gelijk aan een xml maar aan een   lijst van knoppen volgens simple list item 1 
@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setListAdapter(new ArrayAdapter<String>(OpeningsMenu.this, android.R.layout.simple_list_item_1, classes)); 

} 
// hier zetten we de actie als er op de lijst geklikt wordt 
// 
@Override 
protected void onListItemClick(ListView l, View v, int position, long id) { 
    // 
    super.onListItemClick(l, v, position, id); 
    String positie = classes[position]; 
    try{ 
    Class onzeclass = Class.forName("com.example.deceunincktechniekers." + positie); 
    Intent onzeIntent = new Intent(OpeningsMenu.this, onzeclass); 
    startActivity(onzeIntent); 
    }catch (ClassNotFoundException e){ 
     e.printStackTrace(); 
    } 
}

的logcat：

07-13 12:48:47.204: D/dalvikvm(785): GC_CONCURRENT freed 73K, 8% free 2768K/2984K, paused 14ms+57ms, total 148ms 
07-13 12:48:47.664: I/Choreographer(785): Skipped 81 frames! The application may be doing too much work on its main thread. 
07-13 12:48:47.714: D/gralloc_goldfish(785): Emulator without GPU emulation detected. 
07-13 12:53:35.678: D/dalvikvm(785): newInstance failed: Lcom/example/deceunincktechniekers/bezoekrapporten; not accessible to Landroid/app/Instrumentation; 
07-13 12:53:35.678: D/AndroidRuntime(785): Shutting down VM 
07-13 12:53:35.678: W/dalvikvm(785): threadid=1: thread exiting with uncaught exception (group=0x40a71930) 
07-13 12:53:35.738: E/AndroidRuntime(785): FATAL EXCEPTION: main 
07-13 12:53:35.738: E/AndroidRuntime(785): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.example.deceunincktechniekers/com.example.deceunincktechniekers.bezoekrapporten}: java.lang.IllegalAccessException: access to class not allowed 
07-13 12:53:35.738: E/AndroidRuntime(785): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2106) 
07-13 12:53:35.738: E/AndroidRuntime(785): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230) 
07-13 12:53:35.738: E/AndroidRuntime(785): at android.app.ActivityThread.access$600(ActivityThread.java:141) 
07-13 12:53:35.738: E/AndroidRuntime(785): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234) 
07-13 12:53:35.738: E/AndroidRuntime(785): at android.os.Handler.dispatchMessage(Handler.java:99) 
07-13 12:53:35.738: E/AndroidRuntime(785): at android.os.Looper.loop(Looper.java:137) 
07-13 12:53:35.738: E/AndroidRuntime(785): at android.app.ActivityThread.main(ActivityThread.java:5041) 
07-13 12:53:35.738: E/AndroidRuntime(785): at java.lang.reflect.Method.invokeNative(Native Method) 
07-13 12:53:35.738: E/AndroidRuntime(785): at java.lang.reflect.Method.invoke(Method.java:511) 
07-13 12:53:35.738: E/AndroidRuntime(785): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) 
07-13 12:53:35.738: E/AndroidRuntime(785): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560) 
07-13 12:53:35.738: E/AndroidRuntime(785): at dalvik.system.NativeStart.main(Native Method) 
07-13 12:53:35.738: E/AndroidRuntime(785): Caused by: java.lang.IllegalAccessException: access to class not allowed 
07-13 12:53:35.738: E/AndroidRuntime(785): at java.lang.Class.newInstanceImpl(Native Method) 
07-13 12:53:35.738: E/AndroidRuntime(785): at java.lang.Class.newInstance(Class.java:1319) 
07-13 12:53:35.738: E/AndroidRuntime(785): at android.app.Instrumentation.newActivity(Instrumentation.java:1054) 
07-13 12:53:35.738: E/AndroidRuntime(785): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2097) 
07-13 12:53:35.738: E/AndroidRuntime(785): ... 11 more 
07-13 12:53:38.838: I/Process(785): Sending signal. PID: 785 SIG: 9

，如果你需要更多的信息，請自討苦吃

來源

2013-07-13 keuninkske

' 「com.example.deceunincktechniekers。」 + positie）'=你是否在清單中聲明瞭所有這些活動？ – Simon

要麼沒有名爲com.example.deceunincktechniekers.bezoekrapporten類，或者它不是public，或許它沒有public構造。

來源

2013-07-13 13:04:26 CommonsWare

有'類bezoekrapporten延伸......'，我改成'公共類bezoekrapportend延伸......'，現在這個按鈕的作品，似乎是我的其他按鈕的另一個問題 – keuninkske

@keuninkske：活動（以及任何其他成分，像服務）必須是公共零參數構造函數的公共類。通常這個構造函數是由超類爲你處理的，但是你需要明確地將這個類標記爲'public'。那是因爲你的代碼包之外，從Android框架，負責創建組件的實例，這是不可能的，如果類是不公開的。 – CommonsWare

你的日誌說

java.lang.IllegalAccessException不允許進入班級

大概類，命名

com.example.deceunincktechniekers。 +職位

可是沒有公共構造

來源

2013-07-13 13:04:10

startactivity（）關閉應用程序下來

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