import android.content.Context;import android.graphics.Bitmap;import android.os.Handler;import android.os.Message;import com.android.launcher3.ItemInfo;import com.android.launcher3.LauncherSettings;import com.android.launcher3.ShortcutInfo;import com.android.launcher3.util.LogUtil;public class DeskClockUtil {  private OnDeskClockIconChangeListener mListener;  private ItemInfo mItemInfo;  private boolean mIsResume;  private Handler mHandler = new Handler() {    @Override    public void handleMessage(Message msg) {      super.handleMessage(msg);      if (msg.what == 100) {        Message msg1 = new Message();        msg1.what = 100;        msg1.obj = msg.obj;        mHandler.sendMessageDelayed(msg1, 60000);        if (mListener != null && mItemInfo != null) {          mListener.onChange(IconUtil.getDeskClockIcon((Context) msg.obj), mItemInfo);        }      }    }  };  private static DeskClockUtil sInstance;  private DeskClockUtil() {  }  public static DeskClockUtil getInstance() {    if (sInstance == null) {      sInstance = new DeskClockUtil();    }    return sInstance;  }  private void refresh(Context context) {    if (mListener != null && mItemInfo != null) {      mListener.onChange(IconUtil.getDeskClockIcon(context), mItemInfo);    }    if (mHandler.hasMessages(100)) {      mHandler.removeMessages(100);    }    Message msg = new Message();    msg.what = 100;    msg.obj = context;    mHandler.sendMessageDelayed(msg,        1000 * (60 - Integer.parseInt(DateUtils.getCurrentSecond())));  }  public void onResume(Context context) {    mIsResume = true;    refresh(context);  }  public void onPause() {    mIsResume = false;    mHandler.removeMessages(100);  }  public void setListener(OnDeskClockIconChangeListener listener, ItemInfo info, Context context) {    if (!(info instanceof ShortcutInfo)) {      return;    }    String pkg = null;    if (info.getIntent() != null && info.getIntent().getComponent() != null) {      pkg = info.getIntent().getComponent().getPackageName();    }    if (!"com.android.deskclock".equals(pkg) || info.itemType == LauncherSettings.Favorites.ITEM_TYPE_DEEP_SHORTCUT) {      return;    }    mListener = listener;    mItemInfo = info;    if (mIsResume) {      refresh(context);    }  }  public interface OnDeskClockIconChangeListener {    void onChange(Bitmap icon, ItemInfo info);  }}

import android.content.Context;import android.graphics.*;import com.android.launcher3.R;public class IconUtil {  private static final String TAG = "IconUtil";  private static Bitmap getBitmap(Context context, int res) {    BitmapFactory.Options options = new BitmapFactory.Options();    options.inPreferredConfig = Bitmap.Config.ARGB_4444;    return BitmapFactory.decodeResource(context.getResources(), res, options);  }  public static Bitmap getDeskClockIcon(Context context) {    // 添加一個帶表盤的背景圖    Bitmap empty = getBitmap(context, R.drawable.icon_time);    int x = empty.getWidth();    int y = empty.getHeight();    Bitmap deskClock = Bitmap.createBitmap(x, y, Bitmap.Config.ARGB_4444);    Canvas canvas = new Canvas(deskClock);    Paint paint = new Paint();    paint.setAntiAlias(true);    canvas.drawBitmap(empty, 0, 0, paint);    //設置圓角    paint.setStrokeCap(Paint.Cap.ROUND);    paint.setStrokeWidth(5);    paint.setColor(context.getResources().getColor(R.color.deskclock_time));    // 時針的長度    int radius = 35;    // 圓心的x y 坐標    int cx = x / 2;    int cy = y / 2;    int hour = Integer.parseInt(DateUtils.getCurrentHour());    int min = Integer.parseInt(DateUtils.getCurrentMin());    //時針的角度，這里是整點的角度。因為0°是從3點開始，所以這里減90°，從9點開始計算角度    int drgeeHour = hour * 30 - 90;    if (drgeeHour < 0) {      drgeeHour += 360;    }    // 加上時針在兩個整點之間的角度，一分鐘在分針上是6°，在時針上是min * 6 / 12    drgeeHour += min * 6 / 12;    //時針 針尖的x y坐標，相當于已知圓心坐標和半徑，求圓上任意一點的坐標    int xHour = (int) (cx + radius * Math.cos(drgeeHour * 3.14 / 180));    int yHour = (int) (cy + radius * Math.sin(drgeeHour * 3.14 / 180));    canvas.drawLine(xHour, yHour, cx, cy, paint);    //分針的長度    radius = 45;    paint.setStrokeWidth(3);    paint.setColor(Color.RED);    //分針的角度    int drgeeMin = min * 6 - 90;    if (drgeeMin < 0) {      drgeeMin += 360;    }    //分針 針尖的x y坐標    int x1 = (int) (cx + radius * Math.cos(drgeeMin * Math.PI / 180));    int y1 = (int) (cy + radius * Math.sin(drgeeMin * Math.PI / 180));    canvas.drawLine(x1, y1, cx, cy, paint);    return deskClock;  }}

import java.text.SimpleDateFormat;public class DateUtils {  public static String getCurrentDay() {    SimpleDateFormat format = new SimpleDateFormat("dd");    Long t = new Long(System.currentTimeMillis());    String d = format.format(t);    return d;  }  public static String getCurrentSecond() {    SimpleDateFormat format = new SimpleDateFormat("ss");    Long t = new Long(System.currentTimeMillis());    String d = format.format(t);    return d;  }  public static String getCurrentMin() {    SimpleDateFormat format = new SimpleDateFormat("mm");    Long t = new Long(System.currentTimeMillis());    String d = format.format(t);    return d;  }  public static String getCurrentHour() {    SimpleDateFormat format = new SimpleDateFormat("HH");    Long t = new Long(System.currentTimeMillis());    String d = format.format(t);    return d;  }}

private void applyIconAndLabel(Bitmap icon, ItemInfo info) {    /* begin */    setDeskClockIcon(info);    /* end */    applyIcon(icon, info);    setText(info.title);    if (info.contentDescription != null) {      setContentDescription(info.isDisabled()          ? getContext().getString(R.string.disabled_app_label, info.contentDescription)          : info.contentDescription);    }  }  private void setDeskClockIcon(ItemInfo info) {    DeskClockUtil.getInstance().setListener(new DeskClockUtil.OnDeskClockIconChangeListener() {      @Override      public void onChange(Bitmap icon, ItemInfo info) {        applyIcon(icon, info);      }    }, info, getContext());  }  private void applyIcon(Bitmap icon, ItemInfo info) {    FastBitmapDrawable iconDrawable = DrawableFactory.get(getContext()).newIcon(icon, info);    iconDrawable.setIsDisabled(info.isDisabled());    setIcon(iconDrawable);  }

@Override  protected void onResume() {   ......    /* begin */    DeskClockUtil.getInstance().onResume(this);    /* end */    if (mLauncherCallbacks != null) {      mLauncherCallbacks.onResume();    }  }@Override  protected void onPause() {    // Ensure that items added to Launcher are queued until Launcher returns    InstallShortcutReceiver.enableInstallQueue(InstallShortcutReceiver.FLAG_ACTIVITY_PAUSED);    super.onPause();    mPaused = true;    mDragController.cancelDrag();    mDragController.resetLastGestureUpTime();    // We call onHide() aggressively. The custom content callbacks should be able to    // debounce excess onHide calls.    if (mWorkspace.getCustomContentCallbacks() != null) {      mWorkspace.getCustomContentCallbacks().onHide();    }    if (mLauncherCallbacks != null) {      mLauncherCallbacks.onPause();    }    /* begin */    DeskClockUtil.getInstance().onPause();    /* end */  }