App stürzt ab bei TextView Zuweisung

public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        
        //Update data
        File root = new File("/sdcard/test/");
        String[] fotos = root.list();
        
        int count_fotos = fotos.length;
        int count_geschuetzt = 0;
        int count_nichtgeschuetzt;
        for(int i=0; i<fotos.length; i++)
        {
            if(fotos[i].endsWith(".secure")) count_geschuetzt++;
        }
        count_nichtgeschuetzt = count_fotos - count_geschuetzt;
            
        setContentView(R.layout.main);
        
        [COLOR=Red]TextView temp = (TextView)findViewById(R.id.count_fotos);
        temp.setText(count_fotos);        
        temp = (TextView)findViewById(R.id.count_geschuetzt);
        [/COLOR][COLOR=Red]temp.setText([/COLOR][COLOR=Red]count_geschuetzt[/COLOR][COLOR=Red]);    [/COLOR]
        //weitere Zuweisungen
}

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="com.example.javaproject"
      android:versionCode="1"
      android:versionName="1.0">
    <application android:icon="@drawable/icon" android:label="@string/app_name">
        <activity android:name=".JavaProject"
                  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>

[COLOR=Red]<permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"></permission>
<permission-group android:name="android.permission-group.STORAGE"></permission-group>[/COLOR]
</manifest>

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
       package="com.example.javaproject"
       android:versionCode="1"
       android:versionName="1.0"> 
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>     
    <permission-group android:name="android.permission-group.STORAGE"></permission-group>     
    <application android:icon="@drawable/icon" android:label="DeinAppName">         
       <activity android:name=".JavaProject"                   
                 android:label="DeinAppName>             
                      <intent-filter>                 
                             <action android:name="android.intent.action.MAIN" />      
                            <category android:name="android.intent.category.LAUNCHER" />      
                     </intent-filter> 
        </activity>   
    </application>  
  <uses-sdk android:minSdkVersion="6" /> 
</manifest>