Content Provider 使用入门
package android.basic.lesson20; import android.app.Activity; import android.content.ContentResolver; import android.content.ContentValues; import android.database.Cursor; import android.net.Uri; import android.os.Bundle; import android.provider.ContactsContract; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.Toast; public class MainContentProvider extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); Button b1 = (Button) findViewById(R.id.Button01); OnClickListener ocl = new OnClickListener() { @Override public void onClick(View v) { ContentResolver contentResolver = getContentResolver(); // 获得所有的联系人 Cursor cursor = contentResolver.query(ContactsContract.Contacts.CONTENT_URI, null, null, null, null); // 循环遍历 if (cursor.moveToFirst()) { int idColumn = cursor.getColumnIndex(ContactsContract.Contacts._ID); int displayNameColumn = cursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME); do { // 获得联系人的ID号 String contactId = cursor.getString(idColumn); // 获得联系人姓名 String disPlayName = cursor.getString(displayNameColumn); Toast.makeText(MainContentProvider.this, "联系人姓名:"+disPlayName, Toast.LENGTH_LONG).show(); // 查看该联系人有多少个电话号码。如果没有这返回值为0 int phoneCount = cursor.getInt(cursor.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER)); if (phoneCount > 0) { // 获得联系人的电话号码列表 Cursor phonesCursor = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI,null, ContactsContract.CommonDataKinds.Phone.CONTACT_ID + " = " + contactId, null, null); if (phonesCursor.moveToFirst()) { do { // 遍历所有的电话号码 String phoneNumber = phonesCursor .getString(phonesCursor .getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER)); Toast.makeText(MainContentProvider.this, "联系人电话:"+phoneNumber, Toast.LENGTH_LONG).show(); } while (phonesCursor.moveToNext()); } } } while (cursor.moveToNext()); } } }; b1.setOnClickListener(ocl); } }
1、Content Provider 简介
2、使用现成的Content Provider
3、定义自己的Content Provider
系统通讯录中的联系人信息