利用ContentResolver内容访问者获取手机联系人信息

利用ContentResolver内容访问者，获取手机联系人信息我做了两种不同的做法。第一种，直接获取所有手机联系人信息，展示在ListView中。第二种，通过Butten按钮跳转到系统的手机联系人界面，单个获取手机联系人信息，展示在ListView中，结果如下：

第二种：

第一种：直接获取所有手机联系人信息
首先需要在AndroidManifest.xml文件中添加权限：
<uses-permission android:name="android.permission.READ_CONTACTS" />

activity_main.xml布局：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context="com.example.android_25.MainActivity">

<ListView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/lv_lxr"
>
</ListView>
</LinearLayout>

activity_xs.xml布局：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/activity_xs"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context="com.example.android_25.XsActivity">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/tv_name"
/>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/tv_telephone"
/>
</LinearLayout>

MainActivity类：

private ListView lv_lxr;
private Button b_name;
private ContentResolver cr;
private List<Map<String, Object>> datalistView;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//获得ListView
lv_lxr = (ListView) findViewById(R.id.lv_lxr);
//得到访问者
cr = getContentResolver();
//定义一个接收联系人姓名和电话号码的集合
datalistView = new ArrayList<>();
Uri uri=Uri.parse("content://com.android.contacts/raw_contacts");
Cursor cursor= cr.query(uri,null,null,null,null);
while(cursor.moveToNext()){
int id=cursor.getInt(cursor.getColumnIndex("_id"));
Uri uriData=Uri.parse("content://com.android.contacts/raw_contacts/"+id+"/data");
Cursor contactData= cr.query(uriData,null,null,null,null);
//用来装姓名
String aa="";
//用来装号码
String bb="";
while(contactData.moveToNext()){
String type=contactData.getString(contactData.getColumnIndex("mimetype"));
//如果获取的是vnd.android.cursor.item/phone_v2则是号码
if(type.equals("vnd.android.cursor.item/phone_v2")){
bb=contactData.getString(contactData.getColumnIndex("data1"));
//如果获取的是vnd.android.cursor.item/name则是姓名
}else if(type.equals("vnd.android.cursor.item/name")) {
aa=contactData.getString(contactData.getColumnIndex("data1"));
}
}
//将用户名和号码放入Map集合中
Map<String,Object> map=new HashMap<>();
map.put("images",aa);
map.put("titles",bb);
datalistView.add(map);
}
SimpleAdapter adapter=new SimpleAdapter(this, datalistView,R.layout.activity_xs,new String[]{"images","titles"},new int[]{R.id.tv_name,R.id.tv_telephone});
lv_lxr.setAdapter(adapter);
}

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/activity_contacts"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context="com.example.android_25.ContactsActivity">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="跳转到联系人页面"
android:id="@+id/b_tzcontacts"
/>
</LinearLayout>
<ListView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/lv_contacts"
></ListView>
</LinearLayout>

private Button b_tzcontacts;
private String phoneName;
private String phoneNumber;
private List<Map<String,Object>> datalistView;
private ListView lv_contacts;
private SimpleAdapter adapter;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_contacts);
//获得跳转到联系人的id
b_tzcontacts =(Button) findViewById(R.id.b_tzcontacts);
//获得ListView的ID
lv_contacts =(ListView) findViewById(R.id.lv_contacts);
//定义一个接受联系人姓名和电话号码的集合
datalistView = new ArrayList<>();
//获取联系人的点击事件
b_tzcontacts.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intentPhone=new Intent(Intent.ACTION_PICK);
intentPhone.setData(ContactsContract.Contacts.CONTENT_URI);
startActivityForResult(intentPhone,0);
}
});
//R.layout.activity_xs就是上文的activity_xs布局问价
adapter = new SimpleAdapter(this, datalistView, R.layout.activity_xs,new String[]{"images","titles"},new int[]{R.id.tv_name,R.id.tv_telephone});
lv_contacts.setAdapter(adapter);
}

//获得返回的结果
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
switch (requestCode){
case 0:
if(resultCode== Activity.RESULT_OK){
Uri uri=data.getData();
Cursor cursor=managedQuery(uri,null,null,null,null);
cursor.moveToFirst();
String contactid=cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts._ID));
//得到ContentResolver
ContentResolver contentResolver=getContentResolver();
Cursor phone=contentResolver.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI,null,ContactsContract.CommonDataKinds.Phone.CONTACT_ID+"="+contactid,null,null);
while (phone.moveToNext()){
//联系人
phoneName =phone.getString(phone.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME));
//手机号码
phoneNumber =phone.getString(phone.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
//格式化手机号
phoneNumber = phoneNumber.replace("-","");
phoneNumber = phoneNumber.replace("","");
//将用户名和号码放入Map集合中
Map<String,Object> map=new HashMap<>();
map.put("images",phoneName);
map.put("titles",phoneNumber);
datalistView.add(map);
}
//刷新适配器
adapter.notifyDataSetChanged();
}
break;
}

}