dynamic cleandar icon

在上一篇的文章里里实现了动态时钟和动态日历的Launcher图标，但是今天测试的时候发现动态日历会有leakreceived的问题，无法取消Received的绑定。所以今天换一种方式实现动态日历图标：

LauncherAppState.java里增加：

public static final String ACTION_UPDATE_ICON = "com.xxx.update_icon";

 private LauncherAppState() {    …………            // UPDATE APPICON BEGIN        IntentFilter timefilter = new IntentFilter();        timefilter.addAction(Intent.ACTION_DATE_CHANGED);        timefilter.addAction(Intent.ACTION_TIMEZONE_CHANGED);        timefilter.addAction("android.intent.action.TIME_SET");        timefilter.addAction(ACTION_UPDATE_ICON);        sContext.registerReceiver(mModel, timefilter);        // UPDATE APPICON END}

LauncherModel.java里增加：

public interface Callbacks {        …………        public void updateAppIcon(AppInfo info);   //UPDATE APPICON}

 @Override    public void onReceive(Context context, Intent intent) {        …………     /**************UPDATE APPICON BEGIN **********************************/       else if (Intent.ACTION_DATE_CHANGED.equals(action) ||            Intent.ACTION_TIMEZONE_CHANGED.equals(action) ||            "android.intent.action.TIME_SET".equals(action) ||            LauncherAppState.ACTION_UPDATE_ICON.equals(action)) {        String pkgName = null;        if (LauncherAppState.ACTION_UPDATE_ICON.equals(action)) {            pkgName = intent.getStringExtra("packageName");        } else {            pkgName = "com.android.calendar";        }        final ArrayList<AppInfo> list                = (ArrayList<AppInfo>) mBgAllAppsList.data.clone();        if (null == list || list.isEmpty()) {            return;        }        AppInfo info = null;        for (AppInfo ai : list) {            if (ai.componentName.getPackageName().equals(pkgName)) {                info = ai;                break;            }        }        if (null != info && mCallbacks != null) {            Callbacks callbacks = mCallbacks.get();            if (callbacks != null && info != null) {                callbacks.updateAppIcon(info);            }        }        }        /**************UPDATE APPICON END *****************************/}

Launcher.java里添加：

    // UPDATE APPICON BEGIN    @Override    public void updateAppIcon(AppInfo info){        if (null != mIconCache) {//        mIconCache.updateTitleAndIcon(info);        mWorkspace.updateShortcut(info.componentName.getPackageName());        }    }    // UPDATE APPICON END

Workspace.java里添加：

 // UPDATE APPICON BEGIN    void updateShortcut(String pkgName) {        ArrayList<ShortcutAndWidgetContainer> childrenLayouts = getAllShortcutAndWidgetContainers();        for (ShortcutAndWidgetContainer layout: childrenLayouts) {            int childCount = layout.getChildCount();            for (int j = 0; j < childCount; j++) {                final View view = layout.getChildAt(j);                Object tag = view.getTag();                if (tag instanceof ShortcutInfo) {                    ShortcutInfo info = (ShortcutInfo) tag;                    try {                        if (pkgName.equals(info.intent.getComponent().getPackageName())) {                            BubbleTextView bv = (BubbleTextView) view;//                            bv.applyFromShortcutInfo(info, mIconCache);                            bv.applyCalendarInfo(info);                        bv.invalidate();                        }                    } catch (Exception e) {                    }                }            }        }    }    // UPDATE APPICON END

BubbleTextView.java里添加：

    /************************UPDATE APPICON start*****************************/    public void applyCalendarInfo(ShortcutInfo info) {        Bitmap b = Utilities.createCalendarIconBitmap(mLauncher);        FastBitmapDrawable iconDrawable = mLauncher.createIconDrawable(b);        iconDrawable.setGhostModeEnabled(info.isDisabled != 0);        setIcon(iconDrawable, mIconSize);        if (info.contentDescription != null) {            setContentDescription(info.contentDescription);        }        setText(info.title);        setTag(info);//        if (promiseStateChanged || info.isPromise()) {//            applyState(promiseStateChanged);//        }    }       /************************UPDATE APPICON end*****************************/

Utilities.java里添加：

//UPDATE APPICONstatic Bitmap createCalendarIconBitmap(Context context) {//Time time = new Time();//time.setToNow();  int dayOfMonth         = Calendar.getInstance().get(Calendar.DAY_OF_MONTH);int dayOfWeek          = Calendar.getInstance().get(Calendar.DAY_OF_WEEK);//      canvas.drawBitmap(getRes(mTime.monthDay), null, getBounds(), mPaint);  Bitmap calendarBackground = BitmapFactory.decodeResource(context.getResources(), R.drawable.calendar);Bitmap dayOfMonthRes      = getCalendarDataRes(context, dayOfMonth);Bitmap dayOfWeekRes       = getCalendarWeekDayRes(context, dayOfWeek);int width  = getIconBitmapSize();int height = getIconBitmapSize();Bitmap newBmp = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);Canvas canvas = new Canvas(newBmp);Rect destRect = new Rect(0, 0, width, height);Rect srcRect  = new Rect(0, 0, calendarBackground.getWidth(), calendarBackground.getHeight());canvas.setDrawFilter(new PaintFlagsDrawFilter(0, Paint.ANTI_ALIAS_FLAG|Paint.FILTER_BITMAP_FLAG));canvas.drawBitmap(calendarBackground, srcRect, destRect, null);canvas.drawBitmap(dayOfMonthRes, (width - dayOfMonthRes.getWidth()) / 2 , (height - dayOfMonthRes.getHeight()) / 2 + 10, null);canvas.drawBitmap(dayOfWeekRes, (width - dayOfWeekRes.getWidth()) / 2, dayOfWeekRes.getHeight(), null);canvas.save(Canvas.ALL_SAVE_FLAG);canvas.restore();return newBmp;}

</pre><pre>

IconCache.java里添加：

 private CacheEntry cacheLocked(ComponentName componentName, LauncherActivityInfoCompat info,            UserHandleCompat user, boolean usePackageIcon, boolean useLowResIcon) {          …………        //UPDATE APPICON BEGIN        if (null != entry && componentName.getPackageName().equals("com.android.calendar")) {             entry.icon = Utilities.createCalendarIconBitmap(mContext);        }        //UPDATE APPICON END        return entry;}

虽然看起来麻烦了点，但是却没有无法注销广播接收器的error报出来了。