contacts doesn't display

here is my java class

package content.providers;

import android.app.Activity;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.provider.Contacts.People;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;

public class DatabaseExamples extends Activity implements OnClickListener{
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        Button queryButton = (Button)findViewById(R.id.queryButton);
        queryButton.setOnClickListener(this);
        
    }

private void queryContactPhoneNumber() {
    	String[] cols = new String[] {People.NAME, People.NUMBER};
    	Uri myContacts = People.CONTENT_URI;
    	Cursor mqCur = managedQuery(myContacts,cols,null,null,null);
    	if (mqCur.moveToFirst()) {
    		String myname = null;
    		String mynumber = null;
    		do {
    		myname = mqCur.getString(mqCur.getColumnIndex(People.NAME));
    		mynumber = mqCur.getString(mqCur.getColumnIndex(People.NUMBER));
    		Toast.makeText(this, myname + " " + mynumber, Toast.LENGTH_SHORT).show();
    		} while (mqCur.moveToNext());
    		}
    }
    
	@Override
	public void onClick(View v) {
		// TODO Auto-generated method stub
		queryContactPhoneNumber();
	}
}

here is AndroidManifest.xml file
[code=java]
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="content.providers"
      android:versionCode="1"
      android:versionName="1.0">
    <uses-sdk android:minSdkVersion="3" />

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

</application>
</manifest>

here is logcat out put

07-20 11:38:25.054: DEBUG/dalvikvm(58): GC_EXPLICIT freed 5193 objects / 305424 bytes in 389ms
07-20 11:38:25.203: WARN/RecognitionManagerService(58): no available voice recognition services found
07-20 11:38:25.403: INFO/installd(34): unlink /data/dalvik-cache/data@app@content.providers-2.apk@classes.dex
07-20 11:38:25.613: DEBUG/AndroidRuntime(355): Shutting down VM
07-20 11:38:25.634: INFO/AndroidRuntime(355): NOTE: attach of thread 'Binder Thread #3' failed
07-20 11:38:25.643: DEBUG/dalvikvm(355): Debugger has detached; object registry had 1 entries
07-20 11:38:26.664: DEBUG/AndroidRuntime(367): >>>>>>>>>>>>>> AndroidRuntime START <<<<<<<<<<<<<<
07-20 11:38:26.664: DEBUG/AndroidRuntime(367): CheckJNI is ON
07-20 11:38:26.974: DEBUG/AndroidRuntime(367): --- registering native functions ---
07-20 11:38:27.884: INFO/ActivityManager(58): Starting activity: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10000000 cmp=content.providers/.DatabaseExamples }
07-20 11:38:28.044: DEBUG/AndroidRuntime(367): Shutting down VM
07-20 11:38:28.074: DEBUG/dalvikvm(367): Debugger has detached; object registry had 1 entries
07-20 11:38:28.164: INFO/AndroidRuntime(367): NOTE: attach of thread 'Binder Thread #3' failed
07-20 11:38:28.194: INFO/ActivityManager(58): Start proc content.providers for activity content.providers/.DatabaseExamples: pid=374 uid=10039 gids={1015}
07-20 11:38:29.144: INFO/ActivityManager(58): Displayed activity content.providers/.DatabaseExamples: 1102 ms (total 1102 ms)
07-20 11:38:29.613: WARN/IInputConnectionWrapper(156): showStatusIcon on inactive InputConnection
07-20 11:38:34.373: DEBUG/dalvikvm(210): GC_EXPLICIT freed 102 objects / 8368 bytes in 141ms
07-20 11:38:38.174: ERROR/DatabaseUtils(156): Writing exception to parcel
07-20 11:38:38.174: ERROR/DatabaseUtils(156): java.lang.SecurityException: Permission Denial: reading com.android.providers.contacts.ContactsProvider2 uri content://contacts/people from pid=374, uid=10039 requires android.permission.READ_CONTACTS
07-20 11:38:38.174: ERROR/DatabaseUtils(156):     at android.content.ContentProvider$Transport.enforceReadPermission(ContentProvider.java:271)
07-20 11:38:38.174: ERROR/DatabaseUtils(156):     at android.content.ContentProvider$Transport.bulkQuery(ContentProvider.java:149)
07-20 11:38:38.174: ERROR/DatabaseUtils(156):     at android.content.ContentProviderNative.onTransact(ContentProviderNative.java:111)
07-20 11:38:38.174: ERROR/DatabaseUtils(156):     at android.os.Binder.execTransact(Binder.java:288)
07-20 11:38:38.174: ERROR/DatabaseUtils(156):     at dalvik.system.NativeStart.run(Native Method)
07-20 11:38:38.183: DEBUG/AndroidRuntime(374): Shutting down VM
07-20 11:38:38.183: WARN/dalvikvm(374): threadid=1: thread exiting with uncaught exception (group=0x4001d800)
07-20 11:38:38.213: ERROR/AndroidRuntime(374): FATAL EXCEPTION: main
07-20 11:38:38.213: ERROR/AndroidRuntime(374): java.lang.SecurityException: Permission Denial: reading com.android.providers.contacts.ContactsProvider2 uri content://contacts/people from pid=374, uid=10039 requires android.permission.READ_CONTACTS
07-20 11:38:38.213: ERROR/AndroidRuntime(374):     at android.os.Parcel.readException(Parcel.java:1247)
07-20 11:38:38.213: ERROR/AndroidRuntime(374):     at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:160)
07-20 11:38:38.213: ERROR/AndroidRuntime(374):     at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:114)
07-20 11:38:38.213: ERROR/AndroidRuntime(374):     at android.content.ContentProviderProxy.bulkQueryInternal(ContentProviderNative.java:330)
07-20 11:38:38.213: ERROR/AndroidRuntime(374):     at android.content.ContentProviderProxy.query(ContentProviderNative.java:366)
07-20 11:38:38.213: ERROR/AndroidRuntime(374):     at android.content.ContentResolver.query(ContentResolver.java:245)
07-20 11:38:38.213: ERROR/AndroidRuntime(374):     at android.app.Activity.managedQuery(Activity.java:1520)
07-20 11:38:38.213: ERROR/AndroidRuntime(374):     at content.providers.DatabaseExamples.queryContactPhoneNumber(DatabaseExamples.java:28)
07-20 11:38:38.213: ERROR/AndroidRuntime(374):     at content.providers.DatabaseExamples.onClick(DatabaseExamples.java:43)
07-20 11:38:38.213: ERROR/AndroidRuntime(374):     at android.view.View.performClick(View.java:2408)
07-20 11:38:38.213: ERROR/AndroidRuntime(374):     at android.view.View$PerformClick.run(View.java:8816)
07-20 11:38:38.213: ERROR/AndroidRuntime(374):     at android.os.Handler.handleCallback(Handler.java:587)
07-20 11:38:38.213: ERROR/AndroidRuntime(374):     at android.os.Handler.dispatchMessage(Handler.java:92)
07-20 11:38:38.213: ERROR/AndroidRuntime(374):     at android.os.Looper.loop(Looper.java:123)
07-20 11:38:38.213: ERROR/AndroidRuntime(374):     at android.app.ActivityThread.main(ActivityThread.java:4627)
07-20 11:38:38.213: ERROR/AndroidRuntime(374):     at java.lang.reflect.Method.invokeNative(Native Method)
07-20 11:38:38.213: ERROR/AndroidRuntime(374):     at java.lang.reflect.Method.invoke(Method.java:521)
07-20 11:38:38.213: ERROR/AndroidRuntime(374):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
07-20 11:38:38.213: ERROR/AndroidRuntime(374):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
07-20 11:38:38.213: ERROR/AndroidRuntime(374):     at dalvik.system.NativeStart.main(Native Method)

I have added the screenshjot of emulator when i press it.Please advice.

I have already added permission to the AndroidManifest.xml file.But it says permission denied.Please advise.

Post the permission section of the manifest.

still i am unable to find the error.Anyone can help ?