Android -- ContentProvider， 读取和保存系统 联系人

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

public void click(View view) {
ContentResolver resolver = getContentResolver();
// raw_contact 表的uri
Uri uri = Uri.parse("content://com.android.contacts/raw_contacts");
// data 表的uri
Uri dataUri = Uri.parse("content://com.android.contacts/data");
Cursor cursor = resolver.query(uri, new String[] { "contact_id" },
null, null, null);
while (cursor.moveToNext()) {
String id = cursor.getString(0);
//系统删除联系人的时候不会删除全部db中的信息，只是将id置为 null
if (id != null) {
Cursor dataCursor = resolver.query(dataUri, new String[] {
"data1", "mimetype" }, "raw_contact_id=?",
new String[] { id }, null);
while (dataCursor.moveToNext()) {
String data = dataCursor.getString(0);
String mimetype = dataCursor.getString(1);
System.out.println("data:" + data);
System.out.println("mimetype:" + mimetype);

}
dataCursor.close();
System.out.println("----------");
}
}
cursor.close();
}

public void click(View view) {
String name = et_name.getText().toString().trim();
String phone = et_phone.getText().toString().trim();
String email = et_email.getText().toString().trim();

if (TextUtils.isEmpty(name) || TextUtils.isEmpty(phone)) {
Toast.makeText(this, "姓名或者电话不能为空", 1).show();
return;
}
// 把数据写入到系统的联系人.
ContentResolver resolver = this.getContentResolver();
// ----------在raw_contant表中添加一条新的id---------------
Uri uri = Uri.parse("content://com.android.contacts/raw_contacts");
// 插入联系人 必须要知道 新的联系人的id
Cursor cursor = resolver.query(uri, new String[] { "contact_id" },
null, null, "contact_id");
int contact_id;
if (cursor.moveToLast()) {
contact_id = cursor.getInt(0) + 1; // 数据库里面有数据 最后一条联系人的id + 1
} else {// 原先数据库是空的 从第一个联系人开始
contact_id = 1;
}
ContentValues values = new ContentValues();
values.put("contact_id", contact_id);
resolver.insert(uri, values);
// -----------------------------

// ------------在data表里面 添加id对应的数据-------------
Uri dataUri = Uri.parse("content://com.android.contacts/data");

// 插入姓名
ContentValues nameValue = new ContentValues();
nameValue.put("data1", name);
nameValue.put("raw_contact_id", contact_id);
nameValue.put("mimetype", "vnd.android.cursor.item/name");
resolver.insert(dataUri, nameValue);

// 插入电话
ContentValues phoneValue = new ContentValues();
phoneValue.put("data1", phone);
phoneValue.put("raw_contact_id", contact_id);
phoneValue.put("mimetype", "vnd.android.cursor.item/phone_v2");
resolver.insert(dataUri, phoneValue);

// 插入邮箱
if (!TextUtils.isEmpty(email)) {
ContentValues emailValue = new ContentValues();
emailValue.put("data1", email);
emailValue.put("raw_contact_id", contact_id);
emailValue.put("mimetype", "vnd.android.cursor.item/email_v2");
resolver.insert(dataUri, emailValue);
}

Toast.makeText(this, "插入数据成功", 0).show();
}