我是android编程的新手。我无法从我的活动中调用联系人选择器。我已经参考了许多教程，因此对我的代码进行了格式化，但是没有结果。
MainActivity.java的代码是：-
package com.example.intents;
import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.provider.Contacts;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
public class MainActivity extends Activity {
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
MenuInflater mi=getMenuInflater();
mi.inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
public void invokeForRes(View view)
{
Intent in=new Intent(Intent.ACTION_PICK,Contact.Contacts.CONTENT_URI);
startActivityForResult(in, 1);
}
}
请帮助我.......提前谢谢您。
使用ContactsContract.Contacts.CONTENT_URI，而不是Contact.Contacts.CONTENT_URI。后者是Android 1.x联系人提供程序，并ContactsContract在2009年末发布的Android 2.0中被其取代。
/***
Copyright (c) 2008-2012 CommonsWare, LLC
Licensed under the Apache License, Version 2.0 (the "License"); you may not
use this file except in compliance with the License. You may obtain a copy
of the License at http://www.apache.org/licenses/LICENSE-2.0. Unless required
by applicable law or agreed to in writing, software distributed under the
License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS
OF ANY KIND, either express or implied. See the License for the specific
language governing permissions and limitations under the License.
From _The Busy Coder's Guide to Android Development_
http://commonsware.com/Android
*/
package com.commonsware.android.rotation.bundle;
import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.view.View;
import android.widget.Button;
public class RotationBundleDemo extends Activity {
static final int PICK_REQUEST=1337;
Button viewButton=null;
Uri contact=null;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
viewButton=(Button)findViewById(R.id.view);
}
@Override
protected void onActivityResult(int requestCode, int resultCode,
Intent data) {
if (requestCode == PICK_REQUEST) {
if (resultCode == RESULT_OK) {
contact=data.getData();
viewButton.setEnabled(true);
}
}
}
public void pickContact(View v) {
Intent i=
new Intent(Intent.ACTION_PICK,
ContactsContract.Contacts.CONTENT_URI);
startActivityForResult(i, PICK_REQUEST);
}
public void viewContact(View v) {
startActivity(new Intent(Intent.ACTION_VIEW, contact));
}
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
if (contact != null) {
outState.putParcelable("contact", contact);
}
}
@Override
protected void onRestoreInstanceState(Bundle state) {
super.onRestoreInstanceState(state);
contact=state.getParcelable("contact");
viewButton.setEnabled(contact != null);
}
}
（来自此示例项目）
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