Android ContentResolve使用
在Android中使用ContentResolve访问其他程序的数据:
http://developer.android.com/reference/android/content/ContentProvider.html
使用ContentResolve访问手机的联系人
MainActivity.java:注意getContentResolver.query方法的使用实际为解析一个URI
package org.elvalad.contactstest; import android.app.Activity; import android.database.Cursor; import android.os.Bundle; import android.provider.ContactsContract; import android.view.Menu; import android.view.MenuItem; import android.widget.ArrayAdapter; import android.widget.ListView; import java.util.ArrayList; import java.util.List; public class MainActivity extends Activity { ListView contactsView; ArrayAdapter<String> adapter; List<String> contactsList = new ArrayList<String>(); @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); contactsView = (ListView) findViewById(R.id.contacts_view); adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, contactsList); contactsView.setAdapter(adapter); readContacts(); } private void readContacts() { Cursor cursor = null; try { cursor = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, null, null, null); while (cursor.moveToNext()) { // 获取联系人姓名 String displayName = cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME)); // 获取联系人手机号 String number = cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER)); contactsList.add(displayName + "\n" + number); } } catch (Exception e) { e.printStackTrace(); } finally { if (cursor != null) { cursor.close(); } } } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.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(); //noinspection SimplifiableIfStatement if (id == R.id.action_settings) { return true; } return super.onOptionsItemSelected(item); } }
activity_main.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity"> <ListView android:id="@+id/contacts_view" android:layout_width="match_parent" android:layout_height="match_parent"> </ListView> </LinearLayout>
AndroidManifest.xml:增加读取联系人权限
<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="org.elvalad.contactstest" > <application android:allowBackup="true" android:icon="@mipmap/ic_launcher" android:label="@string/app_name" android:theme="@style/AppTheme" > <activity android:name=".MainActivity" android:label="@string/app_name" > <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> <uses-permission android:name="android.permission.READ_CONTACTS" /> </manifest>
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问道,修仙
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