Java tutorial
/* * Copyright (C) 2009 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.kogitune.launcher3; import android.app.Notification; import android.app.NotificationManager; import android.appwidget.AppWidgetHostView; import android.content.Context; import android.os.Handler; import android.os.HandlerThread; import android.os.MessageQueue; import android.support.v4.app.NotificationCompat; import android.util.Log; import android.view.LayoutInflater; import android.view.MotionEvent; import android.view.View; import android.view.ViewGroup; import android.widget.RemoteViews; import com.kogitune.launcher3.DragLayer.TouchCompleteListener; import java.lang.reflect.Field; import java.lang.reflect.Method; /** * {@inheritDoc} */ public class LauncherAppWidgetHostView extends AppWidgetHostView implements TouchCompleteListener { private static final boolean EXPERIMENTAL = false; private CheckLongPressHelper mLongPressHelper; private LayoutInflater mInflater; private Context mContext; private int mPreviousOrientation; private DragLayer mDragLayer; public LauncherAppWidgetHostView(Context context) { super(context); mContext = context; mLongPressHelper = new CheckLongPressHelper(this); mInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); mDragLayer = ((Launcher) context).getDragLayer(); } @Override protected View getErrorView() { return mInflater.inflate(R.layout.appwidget_error, this, false); } @Override public void updateAppWidget(RemoteViews remoteViews) { if (EXPERIMENTAL) { if (remoteViews != null) { Handler mH = null; Field queueField = null; MessageQueue messageQueue = null; try { Class<?> activityThreadClass = Class.forName("android.app.ActivityThread"); Class[] params = new Class[0]; Method currentActivityThread = activityThreadClass.getDeclaredMethod("currentActivityThread", params); Boolean accessible = currentActivityThread.isAccessible(); currentActivityThread.setAccessible(true); Object obj = currentActivityThread.invoke(activityThreadClass); if (obj == null) { Log.d("ERROR", "The current activity thread is null!"); } currentActivityThread.setAccessible(accessible); Field mHField = activityThreadClass.getDeclaredField("mH"); mHField.setAccessible(true); mH = (Handler) mHField.get(obj); queueField = Handler.class.getDeclaredField("mQueue"); queueField.setAccessible(true); messageQueue = (MessageQueue) queueField.get(mH); HandlerThread handlerThread = new HandlerThread("other"); handlerThread.start(); handlerThread.quit(); queueField.set(mH, null); } catch (Exception e) { Log.d("ERROR", Log.getStackTraceString(e)); } Context context = getContext().getApplicationContext(); NotificationManager notificationManager = (NotificationManager) context.getApplicationContext() .getSystemService(Context.NOTIFICATION_SERVICE); NotificationCompat.Builder builder = new NotificationCompat.Builder(context); builder.setContent(remoteViews).setSmallIcon(R.drawable.ic_launcher_info_normal_holo) .setContentTitle("My notification") // ? .setContentText("Hello Notification!!"); // ? Notification notification = builder.build(); notificationManager.notify(getAppWidgetId(), notification); final Field finalQueueField = queueField; final Handler finalMH = mH; final MessageQueue finalMessageQueue = messageQueue; new Thread(new Runnable() { @Override public void run() { try { Thread.sleep(50L); if (finalMessageQueue != null) finalQueueField.set(finalMH, finalMessageQueue); } catch (Exception e) { e.printStackTrace(); } } }).start(); } } // Store the orientation in which the widget was inflated mPreviousOrientation = mContext.getResources().getConfiguration().orientation; super.updateAppWidget(remoteViews); } public boolean orientationChangedSincedInflation() { int orientation = mContext.getResources().getConfiguration().orientation; if (mPreviousOrientation != orientation) { return true; } return false; } public boolean onInterceptTouchEvent(MotionEvent ev) { // Consume any touch events for ourselves after longpress is triggered if (mLongPressHelper.hasPerformedLongPress()) { mLongPressHelper.cancelLongPress(); return true; } // Watch for longpress events at this level to make sure // users can always pick up this widget switch (ev.getAction()) { case MotionEvent.ACTION_DOWN: { mLongPressHelper.postCheckForLongPress(); mDragLayer.setTouchCompleteListener(this); break; } case MotionEvent.ACTION_UP: case MotionEvent.ACTION_CANCEL: mLongPressHelper.cancelLongPress(); break; } // Otherwise continue letting touch events fall through to children return false; } public boolean onTouchEvent(MotionEvent ev) { // If the widget does not handle touch, then cancel // long press when we release the touch switch (ev.getAction()) { case MotionEvent.ACTION_UP: case MotionEvent.ACTION_CANCEL: mLongPressHelper.cancelLongPress(); break; } return false; } @Override public void cancelLongPress() { super.cancelLongPress(); mLongPressHelper.cancelLongPress(); } @Override public void onTouchComplete() { mLongPressHelper.cancelLongPress(); } @Override public int getDescendantFocusability() { return ViewGroup.FOCUS_BLOCK_DESCENDANTS; } }