自学Android值ContentProvider（二），获取联系人

今天的内容是通过ContentProvider获取联系人。

访问联系人的ContentProvider的URI为

<1>content://com.android.contacts/raw_contacts（获得联系人的id，姓名）

<2>content://com.android.contacts/raw_contacts/"+id+"/data（根据联系人的id获得联系人的信息）



我们先新建Activity与布局文件

布局文件代码如下<?xml version="1.0" encoding="utf-8"?>
<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.myapplication.ContactsActivity">

<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/concat"
/>

<Button
android:text="Button"
android:layout_width="wrap_content"
android:onClick="getContacts"
android:layout_height="wrap_content"
android:id="@+id/button" />

<Button
android:text="Button2"
android:layout_width="wrap_content"
android:onClick="getPhoto"
android:layout_height="wrap_content"
android:id="@+id/button2" />

<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/iv"
/>

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

</LinearLayout>

其中ListView用来展示联系人列表

在Activity的onCreate方法中

Cursor cursor=cr.query(uri,null,null,null,null);

SimpleCursorAdapter simpleCursorAdapter = new SimpleCursorAdapter(this, R.layout.item_list, cursor, new String[]{"_id", "display_name"}, new int[]{R.id.tv_item_list_id, R.id.tv_item_list_name});
listView.setAdapter(simpleCursorAdapter);

while (cursor.moveToNext()){
int id=cursor.getInt(cursor.getColumnIndex("_id"));
String name=cursor.getString(cursor.getColumnIndex("display_name"));
Log.i("test",id+" "+name);

//继续获取相对应的联系人的数据（电话号码）
Uri uriData=Uri.parse("content://com.android.contacts/raw_contacts/"+id+"/data");
Cursor cursorData=cr.query(uriData,null,null,null,null);
while(cursorData.moveToNext()){
String data1=cursorData.getString(cursorData.getColumnIndex("data1"));
//int type=cursorData.getInt(cursorData.getColumnIndex("mimetype_id"));
String type=cursorData.getString(cursorData.getColumnIndex("mimetype"));
if("vnd.android.cursor.item/phone_v2".equals(type)){
Log.i("test"," "+data1+":"+type);
}
}

Cursor cursor2 = cr.query(Uri.parse("content://sms/"), new String[]{"body","address"}, "address=?", new String[]{"1 817-396-8101"}, null);
if (cursor2.moveToFirst()) {
do {
for (int i = 0; i < cursor2.getColumnCount(); i++) {
Log.d("customer",""+cursor2.getColumnName(i)+" "+cursor2.getString(i));
}
} while (cursor2.moveToNext());
}
}

获取所有的联系人，效果如下

获取联系人也可以直接跳转至系统的联系人界面直接选择联系人Intent intent = new Intent(Intent.ACTION_PICK,
ContactsContract.Contacts.CONTENT_URI);

startActivityForResult(intent,0);效果如下

点击联系人后返回Activity通过回调方法获取信息

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
switch (requestCode){
case 0:
if(data==null)
{
return;
}
//处理返回的data,获取选择的联系人信息
Uri uri=data.getData();
String[] contacts=getPhoneContacts(uri);
break;

}
super.onActivityResult(requestCode, resultCode, data);
}

private String[] getPhoneContacts(Uri uri){
        String[] contact=new String[2];
//得到ContentResolver对象
        ContentResolver cr = getContentResolver();
//取得电话本中开始一项的光标
        Cursor cursor=cr.query(uri,null,null,null,null);
        if(cursor!=null)
        {
            cursor.moveToFirst();
//取得联系人姓名
            int nameFieldColumnIndex=cursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME);
            contact[0]=cursor.getString(nameFieldColumnIndex);

//取得电话号码
            String ContactId = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts._ID));
            Cursor phone = cr.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null,
                    ContactsContract.CommonDataKinds.Phone.CONTACT_ID + "=" + ContactId, null, null);
            if(phone != null){
                phone.moveToFirst();
                contact[1] = phone.getString(phone.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
            }
            phone.close();
            cursor.close();

            ((TextView) findViewById(R.id.concat)).setText(contact[0]+"   "+contact[1]);

        }
        else
        {
            return null;
        }
        return contact;
    }

效果如下