android应用开发之扫除通话记录

【一、粗略介绍】

通话记录的操作是通过ContactsProvider来玩的，具体的操作晚上大把的例子。摘录下主要部分:

数据库：/data/data/com.android.providers.contacts/databases/contacts2.db

表名：   calls

呼叫类型：

       来电：CallLog.Calls.INCOMING_TYPE （常量值：1）

       已拨：CallLog.Calls.OUTGOING_TYPE（常量值：2）

       未接：CallLog.Calls.MISSED_TYPE（常量值：3）

      packages\providers\ContactsProvider\AndroidManifest.xml

<provider android:name="CallLogProvider"            android:authorities="call_log"            android:syncable="false" android:multiprocess="false"            android:exported="true"            android:readPermission="android.permission.READ_CALL_LOG"            android:writePermission="android.permission.WRITE_CALL_LOG">        </provider>

【二、实例】

ThreadCleanCallLogActivity

package cn.test.cleancalllog;import android.app.Activity;import android.app.AlertDialog;import android.content.ContentResolver;import android.content.DialogInterface;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.provider.CallLog;import android.util.Log;import android.view.Menu;import android.view.MenuItem;import android.view.View;import android.view.View.OnClickListener;import android.widget.Toast;public class ThreadCleanCallLogActivity extends Activity implements		OnClickListener {	private boolean isExits = false;	private boolean isGoOn = true;	private Handler handler = new Handler() {		public void handleMessage(Message msg) {			super.handleMessage(msg);			cleanCallLog();		}	};	//其实就核心方法就这个方法中的几行代码。	private void cleanCallLog() {		ContentResolver resolver = getContentResolver();		resolver.delete(CallLog.Calls.CONTENT_URI, null, null);	}	protected void onCreate(Bundle savedInstanceState) {		super.onCreate(savedInstanceState);		setTitle("清除通话记录!");		// this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);		setContentView(R.layout.main);		init();	}	public boolean onCreateOptionsMenu(Menu menu) {		getMenuInflater().inflate(R.menu.menu, menu);		return true;	}	public boolean onOptionsItemSelected(MenuItem item) {		switch (item.getItemId()) {		case R.id.menu_about:			Log.e("Other", "you click the about item!");			AlertDialog.Builder builder = new AlertDialog.Builder(this);			builder.setTitle(R.string.app_name)					.setMessage("本程序由流浪天堂开发                               联系作者:[email protected]")					.setCancelable(true)					.setPositiveButton("确定",							new DialogInterface.OnClickListener() {								public void onClick(DialogInterface dialog,										int id) {									dialog.cancel();								}							});			AlertDialog alert = builder.create();			alert.show();			break;		case R.id.menu_exit:			Log.e("Other", "you  click exit item!");			finish();			break;		default:			break;		}		return false;	}	private void init() {		this.findViewById(R.id.btnThread).setOnClickListener(this);	}	public void onClick(View v) {		if (v.getId() == R.id.btnThread) {			if (!isExits) {				isExits = true;				new MyThread().start();				Toast.makeText(getApplicationContext(), "删除完成!", 0).show();			} else {				Toast.makeText(getApplicationContext(), "删除中，请等待!", 0).show();			}		}	}	class MyThread extends Thread {		public void run() {			super.run();			while (isGoOn) {				try {					sleep(30);					Message msg = new Message();					handler.sendMessage(msg);					isGoOn = false;				} catch (Exception e) {					e.printStackTrace();				}			}		}	}}

main.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    android:orientation="vertical"     android:background="@drawable/test">    <Button        android:id="@+id/btnThread"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="threadhandler"         android:background="@drawable/buttonselect"        android:gravity="center"        /></LinearLayout>

menu.xml

<?xml version="1.0" encoding="utf-8"?><menu xmlns:android="http://schemas.android.com/apk/res/android" >    <item android:id="@+id/menu_about" android:title="关于" />     <item android:id="@+id/menu_exit" android:title="退出" /></menu>

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"    package="cn.test.cleancalllog"    android:versionCode="1"    android:versionName="1.0" >    <uses-sdk android:minSdkVersion="4" />    <application        android:icon="@drawable/ic_launcher"        android:label="@string/app_name" >        <activity            android:label="@string/app_name"            android:name=".ThreadCleanCallLogActivity" >            <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" />    <uses-permission android:name="android.permission.WRITE_CONTACTS" /></manifest>