重新設計實現CSipSimple呼叫記錄分組功能

CSipSimple 原有的分組功能只能針對連續相同被叫號碼，如果中間有間隔，相同的號碼就不會被分成一組。這個實現很弱，也失去了分組的意義。下面針對這塊功能的設計實現做下簡單記錄。

1. 自己封裝一個CursorLoader

這裏取名爲CalllogCursorLoader，在CallLogListFragment -> OnCreateLoader中：

~.java
// Loader
public Loader onCreateLoader(int id, Bundle args) {
return new CalllogCursorLoader(getActivity());
}
~

2. CalllogCursorLoader.java 代碼：

~~~.java
package org.phoneos.db;

import org.phoneos.api.SipManager;

import android.content.Context;
import android.database.Cursor;
import android.net.Uri;
import android.provider.CallLog;
import android.support.v4.content.AsyncTaskLoader;

public class CalllogCursorLoader extends AsyncTaskLoader {
final ForceLoadContentObserver mObserver;
private FastCursor fastCursor = null;
private Cursor mObserverCursor = null;

/**
 * Creates an empty unspecified CursorLoader. You must follow this with
 * calls to {@link #setUri(Uri)}, {@link #setSelection(String)}, etc to
 * specify the query to perform.
 */
public CalllogCursorLoader(Context context) {
    super(context);
    mObserver = new ForceLoadContentObserver();
}

/* Runs on a worker thread */
@Override
public Cursor loadInBackground() {

    String[] fields = new String[] { CallLog.Calls._ID,
            CallLog.Calls.CACHED_NAME, CallLog.Calls.CACHED_NUMBER_LABEL,
            CallLog.Calls.CACHED_NUMBER_TYPE, CallLog.Calls.DURATION,
            CallLog.Calls.DATE, CallLog.Calls.NEW, CallLog.Calls.NUMBER,
            CallLog.Calls.TYPE, SipManager.CALLLOG_PROFILE_ID_FIELD };

    try {
        if (mObserverCursor != null) {
            mObserverCursor.close();
            mObserverCursor = null;
        }

        // get last inserted, a trick for observer data
        mObserverCursor = getContext().getContentResolver().query(
                SipManager.CALLLOG_URI, fields, null, null,
                "date desc limit 1");

        if (mObserverCursor != null) {
            mObserverCursor.registerContentObserver(mObserver);
        }

// if (fastCursor == null) {
Cursor cursor = getContext().getContentResolver().query(
SipManager.CALLLOG_URI, fields, null, null, “date asc”);

        fastCursor = new FastCursor(cursor);

        cursor.close();
        cursor = null;

// } else {
// fastCursor.addCursor(mObserverCursor);
// }

// int min = fastCursor.getCount();
// if (min > 100)
// min = 100;
// for (int i = 0; i < min; i++) {
// fastCursor.moveToPosition(i);
// Log.d(“LOADER”, i + “, ” + fastCursor.getString(fastCursor.getColumnIndex(CallLog.Calls.NUMBER)));
// }

        return fastCursor;
    } finally {
    }
}

/* Runs on the UI thread */
@Override
public void deliverResult(Cursor cursor) {
    if (isReset()) {
        if (fastCursor != null) {
            fastCursor.close();
        }
    }

    Cursor oldCursor = fastCursor;
    fastCursor = (FastCursor)cursor;

    if (isStarted()) {
        super.deliverResult(cursor);
    }

    if (oldCursor != null && oldCursor != cursor && !oldCursor.isClosed()) {
        oldCursor.close();
    }
}

/**
 * Starts an asynchronous load of the contacts list data. When the result is
 * ready the callbacks will be called on the UI thread. If a previous load
 * has been completed and is still valid the result may be passed to the
 * callbacks immediately.
 * 
 * Must be called from the UI thread
 */
@Override
protected void onStartLoading() {
    if (fastCursor != null) {
        deliverResult(fastCursor);
    }

    if (takeContentChanged() || fastCursor == null) {
        forceLoad();
    }
}

/**
 * Must be called from the UI thread
 */
@Override
protected void onStopLoading() {
    // Attempt to cancel the current load task if possible.
    cancelLoad();
}

@Override
public void onCanceled(Cursor data) {
    if (fastCursor != null && !fastCursor.isClosed()) {
        fastCursor.close();
    }
}

@Override
protected void onReset() {
    super.onReset();
    // Ensure the loader is stopped
    onStopLoading();

    if (fastCursor != null && !fastCursor.isClosed()) {
        fastCursor.close();
    }

    fastCursor = null;
}

}
~~~

3. FastCursor.java 代碼：

~~~.java
package org.phoneos.db;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;

import android.database.AbstractCursor;
import android.database.Cursor;
import android.database.MatrixCursor;
import android.provider.CallLog;
import android.util.Log;

// Custom a cursor, better group call logs, better performace
public class FastCursor extends AbstractCursor {
private HashMap

4. 修改CallLogGroupBuilder.java

~~~.diff
+++ b/src/org/phoneos/ui/calllog/CallLogGroupBuilder.java
@@ -81,16 +81,17 @@ public class CallLogGroupBuilder {
final boolean sameNumber = equalNumbers(firstNumber, currentNumber);
final boolean shouldGroup;

• if (!sameNumber) {
• // Should only group with calls from the same number.
• shouldGroup = false;
• } else if ( firstCallType == Calls.MISSED_TYPE) {
• // Voicemail and missed calls should only be grouped with subsequent missed calls.
• shouldGroup = callType == Calls.MISSED_TYPE;
• } else {
• // Incoming and outgoing calls group together.
• shouldGroup = callType == Calls.INCOMING_TYPE || callType == Calls.OUTGOING_TYPE;
• }
• shouldGroup = sameNumber;
  ~~~

轉自：http://www.yinqisen.cn/blog-510.html