按照Android高级编程写的ContactPicker不成功
这个ContactPicker就是自己写一个Intent Filter 去接收ContactPickerTest中发过来的动作，由ContactPicker负责打开联系人表，再返回指定联系人！我知道可以从ContactPickerTest中直接打开联系人，写这个ContactPicker主要是为了练一下Intent Filter，但不知为何每次按了BUTTON之后都会报错，请高手们指教一下

ContactPickerActivity.java

package org.example.ContactPicker;

import android.app.Activity;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.provider.Contacts.People;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListView;
import android.widget.SimpleCursorAdapter;

@SuppressWarnings("deprecation")
public class ContactPickerActivity extends Activity {
public String TAG ="ContactPicker";
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Log.d("TAG","onCreate");
setContentView(R.layout.main);
Intent intent = getIntent();
final String dataPath = intent.getData().toString();
Uri uri = Uri.parse(dataPath + "people/");
final Cursor cursor = managedQuery(uri,null,null,null,null);
Log.d(TAG,"success get cursor");
String[] from = new String[] {People.NAME};
int[] to = new int[] {R.id.my_list_view_item};
SimpleCursorAdapter adapter = new SimpleCursorAdapter(this, R.layout.list_view_item, cursor, from, to);
ListView lv =(ListView)findViewById(R.id.myListView);
lv.setAdapter(adapter);
lv.setOnItemClickListener(new OnItemClickListener(){

@Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
// TODO Auto-generated method stub
cursor.moveToPosition(position);
int rowId = cursor.getInt(cursor.getColumnIndexOrThrow("_id"));
Uri outUri =Uri.parse(dataPath + rowId);
Intent outData = new Intent();
outData.setData(outUri);
setResult(Activity.RESULT_OK,outData);
finish();
}
});
}
}

ContactPickerTest.java


package org.example.ContactPicker;

import android.app.Activity;
import android.content.ActivityNotFoundException;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.provider.Contacts.People;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

@SuppressWarnings("deprecation")
public class ContactPickerTest extends Activity {
public static final int PICK_CONTACT = 1;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.test_main_layout);

Button button = (Button)findViewById(R.id.button);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
//Intent intent = new Intent(Intent.ACTION_PICK,Uri.parse("content://contacts/"));
try
{
Intent intent = new Intent();
intent.setAction(Intent.ACTION_PICK);
intent.setData(Uri.parse("content://contacts/"));
startActivityForResult(intent, PICK_CONTACT);

}catch(ActivityNotFoundException e){
Log.d("ContactPicker", "error : " + e.getMessage());
}
}
});

}

@Override
protected void onActivityResult (int requestCode, int resultCode, Intent data)
{
super.onActivityResult(requestCode, resultCode, data);
if(resultCode == Activity.RESULT_OK && requestCode == PICK_CONTACT)
{
Uri outUri = data.getData();
Cursor c = managedQuery(outUri,null,null,null,null);
c.moveToFirst();
String name;
name = c.getString(c.getColumnIndexOrThrow(People.NAME));
TextView tv = (TextView)findViewById(R.id.show_text);
tv.setText(name);
}
}

}

Mainfest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="org.example.ContactPicker"
android:versionCode="1"
android:versionName="1.0" >

<uses-sdk android:minSdkVersion="10" />
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name" >
<activity
android:label="@string/app_name"
android:name=".ContactPickerActivity" >
<intent-filter >
<action android:name="android.intent.action.PICK" />
<category android:name="android.intent.category.DEFAULT" />
<data android:path="contacts" android:scheme="content" />
</intent-filter>
</activity>
<activity android:name=".ContactPickerTest">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
<uses-permission android:name="android.permission.READ_CONTACTS"/>
</manifest>

[解决办法]
把日志贴全才能更好知道问题，可以私聊我。。。。。。