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The Android Open Source Project31dd5032009-03-03 19:32:27 -08001/*
2 * Copyright (C) 2008 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
Daniel Sandler325dc232013-06-05 22:57:57 -040017package com.android.launcher3;
The Android Open Source Project31dd5032009-03-03 19:32:27 -080018
Sunny Goyalfafca522014-11-03 11:30:01 -080019import android.annotation.TargetApi;
Michael Jurkaa805e1a2013-08-22 15:00:33 +020020import android.app.Activity;
Sunny Goyal1ed6c4a2016-04-21 15:16:11 -070021import android.app.WallpaperManager;
Michael Jurkaa805e1a2013-08-22 15:00:33 +020022import android.content.ActivityNotFoundException;
Sunny Goyalc5c60ad2014-07-14 12:02:01 -070023import android.content.ComponentName;
Winson Chungaafa03c2010-06-11 17:34:16 -070024import android.content.Context;
Michael Jurkaa805e1a2013-08-22 15:00:33 +020025import android.content.Intent;
Rahul Chaturvedi7fc77ca2015-05-19 18:02:16 -070026import android.content.SharedPreferences;
Sunny Goyalc5c60ad2014-07-14 12:02:01 -070027import android.content.pm.ApplicationInfo;
28import android.content.pm.PackageInfo;
29import android.content.pm.PackageManager;
30import android.content.pm.PackageManager.NameNotFoundException;
31import android.content.pm.ResolveInfo;
Winson Chungaafa03c2010-06-11 17:34:16 -070032import android.content.res.Resources;
Andrew Sappersteinabef55a2016-06-19 12:49:00 -070033import android.content.res.TypedArray;
The Android Open Source Project31dd5032009-03-03 19:32:27 -080034import android.graphics.Bitmap;
Sunny Goyal95abbb32014-08-04 10:53:22 -070035import android.graphics.Color;
Winson Chungc763c4e2013-07-19 13:49:06 -070036import android.graphics.Matrix;
The Android Open Source Project31dd5032009-03-03 19:32:27 -080037import android.graphics.Paint;
38import android.graphics.Rect;
Sandeep Siddhartha2efc7d92014-05-16 17:21:15 -070039import android.os.Build;
Sunny Goyal4e5cc642015-06-25 16:37:44 -070040import android.os.Bundle;
Tony Wickham112ac952015-11-12 12:31:50 -080041import android.os.PowerManager;
Sunny Goyale78e3d72015-09-24 11:23:31 -070042import android.text.Spannable;
43import android.text.SpannableString;
Sunny Goyal5c97f512015-05-19 16:03:28 -070044import android.text.TextUtils;
Sunny Goyale78e3d72015-09-24 11:23:31 -070045import android.text.style.TtsSpan;
Adam Cohen2e6da152015-05-06 11:42:25 -070046import android.util.DisplayMetrics;
Michael Jurkaa805e1a2013-08-22 15:00:33 +020047import android.util.Log;
Sunny Goyal0fe505b2014-08-06 09:55:36 -070048import android.util.Pair;
Sunny Goyal95abbb32014-08-04 10:53:22 -070049import android.util.SparseArray;
Adam Cohen2e6da152015-05-06 11:42:25 -070050import android.util.TypedValue;
Tony Wickham1bce7fd2016-04-28 17:39:03 -070051import android.view.MotionEvent;
Winson Chungc763c4e2013-07-19 13:49:06 -070052import android.view.View;
Sunny Goyal52851aa2016-09-02 10:41:43 -070053import android.view.accessibility.AccessibilityEvent;
54import android.view.accessibility.AccessibilityManager;
Michael Jurkaa805e1a2013-08-22 15:00:33 +020055import android.widget.Toast;
Sunny Goyalb1622cc2015-06-10 16:00:42 -070056
Sunny Goyal713edfc2016-05-06 09:58:34 -070057import com.android.launcher3.config.ProviderConfig;
Sunny Goyal6c56c682015-07-16 14:09:05 -070058
Sunny Goyal5b0e6692015-03-19 14:31:19 -070059import java.io.ByteArrayOutputStream;
Sunny Goyal713edfc2016-05-06 09:58:34 -070060import java.io.Closeable;
Sunny Goyal5b0e6692015-03-19 14:31:19 -070061import java.io.IOException;
Sunny Goyal25aba0a2015-07-16 15:07:47 -070062import java.lang.reflect.Method;
Winson Chungc763c4e2013-07-19 13:49:06 -070063import java.util.ArrayList;
Tony Wickham1bce7fd2016-04-28 17:39:03 -070064import java.util.Collection;
Sunny Goyalb1622cc2015-06-10 16:00:42 -070065import java.util.Locale;
Sunny Goyal4e5cc642015-06-25 16:37:44 -070066import java.util.Set;
Sunny Goyal8ac727b2015-09-23 15:38:09 -070067import java.util.concurrent.Executor;
68import java.util.concurrent.LinkedBlockingQueue;
69import java.util.concurrent.ThreadPoolExecutor;
70import java.util.concurrent.TimeUnit;
Winson Chung82b016c2015-05-08 17:00:10 -070071import java.util.regex.Matcher;
72import java.util.regex.Pattern;
The Android Open Source Project31dd5032009-03-03 19:32:27 -080073
74/**
75 * Various utilities shared amongst the Launcher's classes.
76 */
Mathew Inwood72fbec12013-11-19 15:45:07 +000077public final class Utilities {
Rahul Chaturvedi7fc77ca2015-05-19 18:02:16 -070078
Joe Onorato1291a8c2009-09-15 15:07:25 -040079 private static final String TAG = "Launcher.Utilities";
80
Winson Chung82b016c2015-05-08 17:00:10 -070081 private static final Pattern sTrimPattern =
82 Pattern.compile("^[\\s|\\p{javaSpaceChar}]*(.*)[\\s|\\p{javaSpaceChar}]*$");
83
Sunny Goyal53d7ee42015-05-22 12:25:45 -070084 private static final int[] sLoc0 = new int[2];
85 private static final int[] sLoc1 = new int[2];
Michael Jurka7ad868b2013-12-12 15:04:25 +010086
Sunny Goyaldcc0ba22016-11-02 11:22:39 -070087 public static boolean isAtLeastO() {
88 // TODO: Clean this up: b/32610406
89 return !"REL".equals(Build.VERSION.CODENAME)
90 && "O".compareTo(Build.VERSION.CODENAME) <= 0;
91 }
92
Sunny Goyalf5e37442016-11-02 10:31:24 -070093 public static final boolean ATLEAST_NOUGAT_MR1 =
94 Build.VERSION.SDK_INT >= Build.VERSION_CODES.N_MR1;
Sunny Goyal9994b2b2016-06-23 14:17:24 -070095
Sunny Goyalf5e37442016-11-02 10:31:24 -070096 public static final boolean ATLEAST_NOUGAT =
97 Build.VERSION.SDK_INT >= Build.VERSION_CODES.N;
Sunny Goyale2ec8a32016-09-01 11:00:49 -070098
Winsonbe9798b2016-07-20 12:55:49 -070099 public static final boolean ATLEAST_MARSHMALLOW =
100 Build.VERSION.SDK_INT >= Build.VERSION_CODES.M;
Sunny Goyal9fc953b2015-08-17 12:24:25 -0700101
102 public static final boolean ATLEAST_LOLLIPOP_MR1 =
103 Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP_MR1;
104
105 public static final boolean ATLEAST_LOLLIPOP =
106 Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP;
107
108 public static final boolean ATLEAST_KITKAT =
109 Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;
110
111 public static final boolean ATLEAST_JB_MR1 =
112 Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1;
113
114 public static final boolean ATLEAST_JB_MR2 =
115 Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2;
116
Sunny Goyal6f866092016-03-17 17:04:15 -0700117 // An intent extra to indicate the horizontal scroll of the wallpaper.
118 public static final String EXTRA_WALLPAPER_OFFSET = "com.android.launcher3.WALLPAPER_OFFSET";
119
Sunny Goyal8ac727b2015-09-23 15:38:09 -0700120 // These values are same as that in {@link AsyncTask}.
121 private static final int CPU_COUNT = Runtime.getRuntime().availableProcessors();
122 private static final int CORE_POOL_SIZE = CPU_COUNT + 1;
123 private static final int MAXIMUM_POOL_SIZE = CPU_COUNT * 2 + 1;
124 private static final int KEEP_ALIVE = 1;
125 /**
126 * An {@link Executor} to be used with async task with no limit on the queue size.
127 */
128 public static final Executor THREAD_POOL_EXECUTOR = new ThreadPoolExecutor(
129 CORE_POOL_SIZE, MAXIMUM_POOL_SIZE, KEEP_ALIVE,
130 TimeUnit.SECONDS, new LinkedBlockingQueue<Runnable>());
131
Rahul Chaturvedi7fc77ca2015-05-19 18:02:16 -0700132 public static final String ALLOW_ROTATION_PREFERENCE_KEY = "pref_allowRotation";
133
Sunny Goyal4bbf4192014-11-11 12:23:59 -0800134 public static boolean isPropertyEnabled(String propertyName) {
Michael Jurka7ad868b2013-12-12 15:04:25 +0100135 return Log.isLoggable(propertyName, Log.VERBOSE);
136 }
137
Sunny Goyal21bf5312015-08-21 11:08:24 -0700138 public static boolean isAllowRotationPrefEnabled(Context context) {
Sunny Goyalf48e5922016-05-12 15:36:20 -0700139 return getPrefs(context).getBoolean(ALLOW_ROTATION_PREFERENCE_KEY,
140 getAllowRotationDefaultValue(context));
141 }
142
143 public static boolean getAllowRotationDefaultValue(Context context) {
Sunny Goyalf5e37442016-11-02 10:31:24 -0700144 if (ATLEAST_NOUGAT) {
Sunny Goyal8f3819b2016-02-23 14:49:22 -0800145 // If the device was scaled, used the original dimensions to determine if rotation
146 // is allowed of not.
Sunny Goyale2ec8a32016-09-01 11:00:49 -0700147 Resources res = context.getResources();
148 int originalSmallestWidth = res.getConfiguration().smallestScreenWidthDp
149 * res.getDisplayMetrics().densityDpi / DisplayMetrics.DENSITY_DEVICE_STABLE;
150 return originalSmallestWidth >= 600;
Sunny Goyal8f3819b2016-02-23 14:49:22 -0800151 }
Sunny Goyalf48e5922016-05-12 15:36:20 -0700152 return false;
Michael Jurka7ad868b2013-12-12 15:04:25 +0100153 }
154
The Android Open Source Project31dd5032009-03-03 19:32:27 -0800155 /**
Winson Chungc763c4e2013-07-19 13:49:06 -0700156 * Given a coordinate relative to the descendant, find the coordinate in a parent view's
157 * coordinates.
158 *
159 * @param descendant The descendant to which the passed coordinate is relative.
Sunny Goyale8b5d202016-06-13 16:36:59 -0700160 * @param ancestor The root view to make the coordinates relative to.
Winson Chungc763c4e2013-07-19 13:49:06 -0700161 * @param coord The coordinate that we want mapped.
162 * @param includeRootScroll Whether or not to account for the scroll of the descendant:
163 * sometimes this is relevant as in a child's coordinates within the descendant.
164 * @return The factor by which this descendant is scaled relative to this DragLayer. Caution
165 * this scale factor is assumed to be equal in X and Y, and so if at any point this
166 * assumption fails, we will need to return a pair of scale factors.
167 */
Sunny Goyale8b5d202016-06-13 16:36:59 -0700168 public static float getDescendantCoordRelativeToAncestor(
169 View descendant, View ancestor, int[] coord, boolean includeRootScroll) {
Winson Chungc763c4e2013-07-19 13:49:06 -0700170 float[] pt = {coord[0], coord[1]};
Sunny Goyal8cf47a52016-06-15 10:11:30 -0700171 float scale = 1.0f;
Winson Chungc763c4e2013-07-19 13:49:06 -0700172 View v = descendant;
Sunny Goyale8b5d202016-06-13 16:36:59 -0700173 while(v != ancestor && v != null) {
Sunny Goyal8cf47a52016-06-15 10:11:30 -0700174 // For TextViews, scroll has a meaning which relates to the text position
175 // which is very strange... ignore the scroll.
176 if (v != descendant || includeRootScroll) {
177 pt[0] -= v.getScrollX();
178 pt[1] -= v.getScrollY();
179 }
180
181 v.getMatrix().mapPoints(pt);
182 pt[0] += v.getLeft();
183 pt[1] += v.getTop();
184 scale *= v.getScaleX();
185
Winson Chungc763c4e2013-07-19 13:49:06 -0700186 v = (View) v.getParent();
187 }
Winson Chungc763c4e2013-07-19 13:49:06 -0700188
Sunny Goyal8cf47a52016-06-15 10:11:30 -0700189 coord[0] = Math.round(pt[0]);
190 coord[1] = Math.round(pt[1]);
Winson Chungc763c4e2013-07-19 13:49:06 -0700191 return scale;
192 }
193
194 /**
Sunny Goyale8b5d202016-06-13 16:36:59 -0700195 * Inverse of {@link #getDescendantCoordRelativeToAncestor(View, View, int[], boolean)}.
Winson Chungc763c4e2013-07-19 13:49:06 -0700196 */
197 public static float mapCoordInSelfToDescendent(View descendant, View root,
198 int[] coord) {
199 ArrayList<View> ancestorChain = new ArrayList<View>();
200
201 float[] pt = {coord[0], coord[1]};
202
203 View v = descendant;
204 while(v != root) {
205 ancestorChain.add(v);
206 v = (View) v.getParent();
207 }
208 ancestorChain.add(root);
209
210 float scale = 1.0f;
211 Matrix inverse = new Matrix();
212 int count = ancestorChain.size();
213 for (int i = count - 1; i >= 0; i--) {
214 View ancestor = ancestorChain.get(i);
215 View next = i > 0 ? ancestorChain.get(i-1) : null;
216
217 pt[0] += ancestor.getScrollX();
218 pt[1] += ancestor.getScrollY();
219
220 if (next != null) {
221 pt[0] -= next.getLeft();
222 pt[1] -= next.getTop();
223 next.getMatrix().invert(inverse);
224 inverse.mapPoints(pt);
225 scale *= next.getScaleX();
226 }
227 }
228
229 coord[0] = (int) Math.round(pt[0]);
230 coord[1] = (int) Math.round(pt[1]);
231 return scale;
232 }
233
Jason Monk02dd7ae2014-04-15 15:23:31 -0400234 /**
235 * Utility method to determine whether the given point, in local coordinates,
236 * is inside the view, where the area of the view is expanded by the slop factor.
237 * This method is called while processing touch-move events to determine if the event
238 * is still within the view.
239 */
240 public static boolean pointInView(View v, float localX, float localY, float slop) {
241 return localX >= -slop && localY >= -slop && localX < (v.getWidth() + slop) &&
242 localY < (v.getHeight() + slop);
243 }
244
Tony Wickham1bce7fd2016-04-28 17:39:03 -0700245 /** Translates MotionEvents from src's coordinate system to dst's. */
246 public static void translateEventCoordinates(View src, View dst, MotionEvent dstEvent) {
247 toGlobalMotionEvent(src, dstEvent);
248 toLocalMotionEvent(dst, dstEvent);
249 }
250
251 /**
252 * Emulates View.toGlobalMotionEvent(). This implementation does not handle transformations
253 * (scaleX, scaleY, etc).
254 */
255 private static void toGlobalMotionEvent(View view, MotionEvent event) {
256 view.getLocationOnScreen(sLoc0);
257 event.offsetLocation(sLoc0[0], sLoc0[1]);
258 }
259
260 /**
261 * Emulates View.toLocalMotionEvent(). This implementation does not handle transformations
262 * (scaleX, scaleY, etc).
263 */
264 private static void toLocalMotionEvent(View view, MotionEvent event) {
265 view.getLocationOnScreen(sLoc0);
266 event.offsetLocation(-sLoc0[0], -sLoc0[1]);
267 }
268
Adam Cohen63f1ec02014-08-12 09:23:13 -0700269 public static int[] getCenterDeltaInScreenSpace(View v0, View v1, int[] delta) {
270 v0.getLocationInWindow(sLoc0);
271 v1.getLocationInWindow(sLoc1);
272
273 sLoc0[0] += (v0.getMeasuredWidth() * v0.getScaleX()) / 2;
274 sLoc0[1] += (v0.getMeasuredHeight() * v0.getScaleY()) / 2;
275 sLoc1[0] += (v1.getMeasuredWidth() * v1.getScaleX()) / 2;
276 sLoc1[1] += (v1.getMeasuredHeight() * v1.getScaleY()) / 2;
277
278 if (delta == null) {
279 delta = new int[2];
280 }
281
282 delta[0] = sLoc1[0] - sLoc0[0];
283 delta[1] = sLoc1[1] - sLoc0[1];
284
285 return delta;
286 }
287
Winson Chung3a6e7f32013-10-09 15:50:52 -0700288 public static void scaleRectAboutCenter(Rect r, float scale) {
Sunny Goyal106bf642015-07-16 12:18:06 -0700289 if (scale != 1.0f) {
290 int cx = r.centerX();
291 int cy = r.centerY();
292 r.offset(-cx, -cy);
293
294 r.left = (int) (r.left * scale + 0.5f);
295 r.top = (int) (r.top * scale + 0.5f);
296 r.right = (int) (r.right * scale + 0.5f);
297 r.bottom = (int) (r.bottom * scale + 0.5f);
298
299 r.offset(cx, cy);
300 }
Winson Chung3a6e7f32013-10-09 15:50:52 -0700301 }
302
Michael Jurkaa805e1a2013-08-22 15:00:33 +0200303 public static void startActivityForResultSafely(
304 Activity activity, Intent intent, int requestCode) {
305 try {
306 activity.startActivityForResult(intent, requestCode);
307 } catch (ActivityNotFoundException e) {
308 Toast.makeText(activity, R.string.activity_not_found, Toast.LENGTH_SHORT).show();
309 } catch (SecurityException e) {
310 Toast.makeText(activity, R.string.activity_not_found, Toast.LENGTH_SHORT).show();
311 Log.e(TAG, "Launcher does not have the permission to launch " + intent +
312 ". Make sure to create a MAIN intent-filter for the corresponding activity " +
313 "or use the exported attribute for this activity.", e);
314 }
315 }
Sunny Goyalc5c60ad2014-07-14 12:02:01 -0700316
317 static boolean isSystemApp(Context context, Intent intent) {
318 PackageManager pm = context.getPackageManager();
319 ComponentName cn = intent.getComponent();
320 String packageName = null;
321 if (cn == null) {
322 ResolveInfo info = pm.resolveActivity(intent, PackageManager.MATCH_DEFAULT_ONLY);
323 if ((info != null) && (info.activityInfo != null)) {
324 packageName = info.activityInfo.packageName;
325 }
326 } else {
327 packageName = cn.getPackageName();
328 }
329 if (packageName != null) {
330 try {
331 PackageInfo info = pm.getPackageInfo(packageName, 0);
332 return (info != null) && (info.applicationInfo != null) &&
333 ((info.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) != 0);
334 } catch (NameNotFoundException e) {
335 return false;
336 }
337 } else {
338 return false;
339 }
340 }
Sunny Goyal95abbb32014-08-04 10:53:22 -0700341
342 /**
343 * This picks a dominant color, looking for high-saturation, high-value, repeated hues.
344 * @param bitmap The bitmap to scan
345 * @param samples The approximate max number of samples to use.
346 */
347 static int findDominantColorByHue(Bitmap bitmap, int samples) {
348 final int height = bitmap.getHeight();
349 final int width = bitmap.getWidth();
350 int sampleStride = (int) Math.sqrt((height * width) / samples);
351 if (sampleStride < 1) {
352 sampleStride = 1;
353 }
354
355 // This is an out-param, for getting the hsv values for an rgb
356 float[] hsv = new float[3];
357
358 // First get the best hue, by creating a histogram over 360 hue buckets,
359 // where each pixel contributes a score weighted by saturation, value, and alpha.
360 float[] hueScoreHistogram = new float[360];
361 float highScore = -1;
362 int bestHue = -1;
363
364 for (int y = 0; y < height; y += sampleStride) {
365 for (int x = 0; x < width; x += sampleStride) {
366 int argb = bitmap.getPixel(x, y);
367 int alpha = 0xFF & (argb >> 24);
368 if (alpha < 0x80) {
369 // Drop mostly-transparent pixels.
370 continue;
371 }
372 // Remove the alpha channel.
373 int rgb = argb | 0xFF000000;
374 Color.colorToHSV(rgb, hsv);
375 // Bucket colors by the 360 integer hues.
376 int hue = (int) hsv[0];
377 if (hue < 0 || hue >= hueScoreHistogram.length) {
378 // Defensively avoid array bounds violations.
379 continue;
380 }
381 float score = hsv[1] * hsv[2];
382 hueScoreHistogram[hue] += score;
383 if (hueScoreHistogram[hue] > highScore) {
384 highScore = hueScoreHistogram[hue];
385 bestHue = hue;
386 }
387 }
388 }
389
390 SparseArray<Float> rgbScores = new SparseArray<Float>();
391 int bestColor = 0xff000000;
392 highScore = -1;
393 // Go back over the RGB colors that match the winning hue,
394 // creating a histogram of weighted s*v scores, for up to 100*100 [s,v] buckets.
395 // The highest-scoring RGB color wins.
396 for (int y = 0; y < height; y += sampleStride) {
397 for (int x = 0; x < width; x += sampleStride) {
398 int rgb = bitmap.getPixel(x, y) | 0xff000000;
399 Color.colorToHSV(rgb, hsv);
400 int hue = (int) hsv[0];
401 if (hue == bestHue) {
402 float s = hsv[1];
403 float v = hsv[2];
404 int bucket = (int) (s * 100) + (int) (v * 10000);
405 // Score by cumulative saturation * value.
406 float score = s * v;
407 Float oldTotal = rgbScores.get(bucket);
408 float newTotal = oldTotal == null ? score : oldTotal + score;
409 rgbScores.put(bucket, newTotal);
410 if (newTotal > highScore) {
411 highScore = newTotal;
412 // All the colors in the winning bucket are very similar. Last in wins.
413 bestColor = rgb;
414 }
415 }
416 }
417 }
418 return bestColor;
419 }
Sunny Goyal0fe505b2014-08-06 09:55:36 -0700420
421 /*
422 * Finds a system apk which had a broadcast receiver listening to a particular action.
423 * @param action intent action used to find the apk
424 * @return a pair of apk package name and the resources.
425 */
426 static Pair<String, Resources> findSystemApk(String action, PackageManager pm) {
427 final Intent intent = new Intent(action);
428 for (ResolveInfo info : pm.queryBroadcastReceivers(intent, 0)) {
429 if (info.activityInfo != null &&
430 (info.activityInfo.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) != 0) {
431 final String packageName = info.activityInfo.packageName;
432 try {
433 final Resources res = pm.getResourcesForApplication(packageName);
434 return Pair.create(packageName, res);
435 } catch (NameNotFoundException e) {
436 Log.w(TAG, "Failed to find resources for " + packageName);
437 }
438 }
439 }
440 return null;
441 }
Sunny Goyalfafca522014-11-03 11:30:01 -0800442
Sunny Goyal594d76d2014-11-06 10:12:54 -0800443 /**
Sunny Goyal5b0e6692015-03-19 14:31:19 -0700444 * Compresses the bitmap to a byte array for serialization.
445 */
446 public static byte[] flattenBitmap(Bitmap bitmap) {
447 // Try go guesstimate how much space the icon will take when serialized
448 // to avoid unnecessary allocations/copies during the write.
449 int size = bitmap.getWidth() * bitmap.getHeight() * 4;
450 ByteArrayOutputStream out = new ByteArrayOutputStream(size);
451 try {
452 bitmap.compress(Bitmap.CompressFormat.PNG, 100, out);
453 out.flush();
454 out.close();
455 return out.toByteArray();
456 } catch (IOException e) {
457 Log.w(TAG, "Could not write bitmap");
458 return null;
459 }
460 }
461
Sunny Goyalf7a29e82015-04-24 15:20:43 -0700462 /**
Winson Chung82b016c2015-05-08 17:00:10 -0700463 * Trims the string, removing all whitespace at the beginning and end of the string.
464 * Non-breaking whitespaces are also removed.
465 */
466 public static String trim(CharSequence s) {
Winson Chungafa77e92015-05-15 12:04:03 -0700467 if (s == null) {
468 return null;
469 }
470
Winson Chung82b016c2015-05-08 17:00:10 -0700471 // Just strip any sequence of whitespace or java space characters from the beginning and end
472 Matcher m = sTrimPattern.matcher(s);
473 return m.replaceAll("$1");
474 }
Sunny Goyal70660032015-05-14 00:07:08 -0700475
Winson Chung2c6e5cc2015-06-01 14:38:24 -0700476 /**
477 * Calculates the height of a given string at a specific text size.
478 */
Sunny Goyalbaec6ff2016-09-14 11:26:21 -0700479 public static int calculateTextHeight(float textSizePx) {
Winson Chung2c6e5cc2015-06-01 14:38:24 -0700480 Paint p = new Paint();
481 p.setTextSize(textSizePx);
482 Paint.FontMetrics fm = p.getFontMetrics();
Sunny Goyalbaec6ff2016-09-14 11:26:21 -0700483 return (int) Math.ceil(fm.bottom - fm.top);
Winson Chung2c6e5cc2015-06-01 14:38:24 -0700484 }
485
Winson Chungb1777442015-06-16 13:35:04 -0700486 /**
487 * Convenience println with multiple args.
488 */
489 public static void println(String key, Object... args) {
490 StringBuilder b = new StringBuilder();
491 b.append(key);
492 b.append(": ");
493 boolean isFirstArgument = true;
494 for (Object arg : args) {
495 if (isFirstArgument) {
496 isFirstArgument = false;
497 } else {
498 b.append(", ");
499 }
500 b.append(arg);
501 }
502 System.out.println(b.toString());
503 }
504
Sunny Goyal70660032015-05-14 00:07:08 -0700505 @TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
506 public static boolean isRtl(Resources res) {
Sunny Goyal9fc953b2015-08-17 12:24:25 -0700507 return ATLEAST_JB_MR1 &&
Sunny Goyal70660032015-05-14 00:07:08 -0700508 (res.getConfiguration().getLayoutDirection() == View.LAYOUT_DIRECTION_RTL);
509 }
Hyunyoung Song2bd3d7d2015-05-21 13:04:53 -0700510
Sunny Goyal5c97f512015-05-19 16:03:28 -0700511 /**
512 * Returns true if the intent is a valid launch intent for a launcher activity of an app.
513 * This is used to identify shortcuts which are different from the ones exposed by the
514 * applications' manifest file.
515 *
516 * @param launchIntent The intent that will be launched when the shortcut is clicked.
517 */
518 public static boolean isLauncherAppTarget(Intent launchIntent) {
Sunny Goyal4e5cc642015-06-25 16:37:44 -0700519 if (launchIntent != null
Sunny Goyal5c97f512015-05-19 16:03:28 -0700520 && Intent.ACTION_MAIN.equals(launchIntent.getAction())
521 && launchIntent.getComponent() != null
522 && launchIntent.getCategories() != null
523 && launchIntent.getCategories().size() == 1
524 && launchIntent.hasCategory(Intent.CATEGORY_LAUNCHER)
Sunny Goyal4e5cc642015-06-25 16:37:44 -0700525 && TextUtils.isEmpty(launchIntent.getDataString())) {
526 // An app target can either have no extra or have ItemInfo.EXTRA_PROFILE.
527 Bundle extras = launchIntent.getExtras();
528 if (extras == null) {
529 return true;
530 } else {
531 Set<String> keys = extras.keySet();
532 return keys.size() == 1 && keys.contains(ItemInfo.EXTRA_PROFILE);
533 }
534 };
535 return false;
Sunny Goyal5c97f512015-05-19 16:03:28 -0700536 }
Adam Cohen2e6da152015-05-06 11:42:25 -0700537
538 public static float dpiFromPx(int size, DisplayMetrics metrics){
539 float densityRatio = (float) metrics.densityDpi / DisplayMetrics.DENSITY_DEFAULT;
540 return (size / densityRatio);
541 }
542 public static int pxFromDp(float size, DisplayMetrics metrics) {
543 return (int) Math.round(TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP,
544 size, metrics));
545 }
546 public static int pxFromSp(float size, DisplayMetrics metrics) {
547 return (int) Math.round(TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP,
548 size, metrics));
549 }
Sunny Goyalb1622cc2015-06-10 16:00:42 -0700550
551 public static String createDbSelectionQuery(String columnName, Iterable<?> values) {
552 return String.format(Locale.ENGLISH, "%s IN (%s)", columnName, TextUtils.join(", ", values));
553 }
Sunny Goyal25aba0a2015-07-16 15:07:47 -0700554
Sunny Goyal25aba0a2015-07-16 15:07:47 -0700555 public static boolean isBootCompleted() {
Sunny Goyaldfc8b662016-08-30 12:05:48 -0700556 return "1".equals(getSystemProperty("sys.boot_completed", "1"));
557 }
558
559 public static String getSystemProperty(String property, String defaultValue) {
Sunny Goyal25aba0a2015-07-16 15:07:47 -0700560 try {
561 Class clazz = Class.forName("android.os.SystemProperties");
562 Method getter = clazz.getDeclaredMethod("get", String.class);
Sunny Goyaldfc8b662016-08-30 12:05:48 -0700563 String value = (String) getter.invoke(null, property);
564 if (!TextUtils.isEmpty(value)) {
565 return value;
566 }
Sunny Goyal25aba0a2015-07-16 15:07:47 -0700567 } catch (Exception e) {
568 Log.d(TAG, "Unable to read system properties");
Sunny Goyal25aba0a2015-07-16 15:07:47 -0700569 }
Sunny Goyaldfc8b662016-08-30 12:05:48 -0700570 return defaultValue;
Sunny Goyal25aba0a2015-07-16 15:07:47 -0700571 }
Tony Wickham29d853c2015-09-08 10:35:56 -0700572
573 /**
574 * Ensures that a value is within given bounds. Specifically:
575 * If value is less than lowerBound, return lowerBound; else if value is greater than upperBound,
576 * return upperBound; else return value unchanged.
577 */
Tony Wickhamf549dab2016-05-16 09:54:06 -0700578 public static int boundToRange(int value, int lowerBound, int upperBound) {
579 return Math.max(lowerBound, Math.min(value, upperBound));
580 }
581
582 /**
583 * @see #boundToRange(int, int, int).
584 */
585 public static float boundToRange(float value, float lowerBound, float upperBound) {
Tony Wickham29d853c2015-09-08 10:35:56 -0700586 return Math.max(lowerBound, Math.min(value, upperBound));
587 }
Sunny Goyal9d438082015-09-25 11:50:16 -0700588
Sunny Goyale78e3d72015-09-24 11:23:31 -0700589 /**
590 * Wraps a message with a TTS span, so that a different message is spoken than
591 * what is getting displayed.
592 * @param msg original message
593 * @param ttsMsg message to be spoken
594 */
595 @TargetApi(Build.VERSION_CODES.LOLLIPOP)
596 public static CharSequence wrapForTts(CharSequence msg, String ttsMsg) {
597 if (Utilities.ATLEAST_LOLLIPOP) {
598 SpannableString spanned = new SpannableString(msg);
599 spanned.setSpan(new TtsSpan.TextBuilder(ttsMsg).build(),
600 0, spanned.length(), Spannable.SPAN_INCLUSIVE_INCLUSIVE);
601 return spanned;
602 } else {
603 return msg;
604 }
605 }
Winson12fb9fc2015-10-01 15:34:08 -0700606
607 /**
608 * Replacement for Long.compare() which was added in API level 19.
609 */
610 public static int longCompare(long lhs, long rhs) {
611 return lhs < rhs ? -1 : (lhs == rhs ? 0 : 1);
612 }
Sunny Goyalf7258242015-10-19 16:59:07 -0700613
614 public static SharedPreferences getPrefs(Context context) {
615 return context.getSharedPreferences(
616 LauncherFiles.SHARED_PREFERENCES_KEY, Context.MODE_PRIVATE);
617 }
Tony Wickham112ac952015-11-12 12:31:50 -0800618
619 @TargetApi(Build.VERSION_CODES.LOLLIPOP)
620 public static boolean isPowerSaverOn(Context context) {
621 PowerManager powerManager = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
622 return ATLEAST_LOLLIPOP && powerManager.isPowerSaveMode();
623 }
Sunny Goyale1483fb2016-01-08 12:16:15 -0800624
Hyunyoung Song0de01172016-10-05 16:27:48 -0700625 public static boolean isWallpaperAllowed(Context context) {
Sunny Goyalf5e37442016-11-02 10:31:24 -0700626 if (ATLEAST_NOUGAT) {
Sunny Goyal1ed6c4a2016-04-21 15:16:11 -0700627 try {
628 WallpaperManager wm = context.getSystemService(WallpaperManager.class);
Kenny Guy367da9f2016-05-25 19:22:14 +0100629 return (Boolean) wm.getClass().getDeclaredMethod("isSetWallpaperAllowed")
Sunny Goyal1ed6c4a2016-04-21 15:16:11 -0700630 .invoke(wm);
631 } catch (Exception e) { }
632 }
633 return true;
634 }
635
Sunny Goyal713edfc2016-05-06 09:58:34 -0700636 public static void closeSilently(Closeable c) {
637 if (c != null) {
638 try {
639 c.close();
640 } catch (IOException e) {
641 if (ProviderConfig.IS_DOGFOOD_BUILD) {
642 Log.d(TAG, "Error closing", e);
643 }
644 }
645 }
646 }
647
Sunny Goyale1483fb2016-01-08 12:16:15 -0800648 /**
Sunny Goyal3f732192016-05-13 13:48:44 -0700649 * Returns true if {@param original} contains all entries defined in {@param updates} and
650 * have the same value.
651 * The comparison uses {@link Object#equals(Object)} to compare the values.
652 */
653 public static boolean containsAll(Bundle original, Bundle updates) {
654 for (String key : updates.keySet()) {
655 Object value1 = updates.get(key);
656 Object value2 = original.get(key);
657 if (value1 == null) {
658 if (value2 != null) {
659 return false;
660 }
661 } else if (!value1.equals(value2)) {
662 return false;
663 }
664 }
665 return true;
666 }
667
Tony Wickham1bce7fd2016-04-28 17:39:03 -0700668 /** Returns whether the collection is null or empty. */
669 public static boolean isEmpty(Collection c) {
670 return c == null || c.isEmpty();
671 }
672
Andrew Sappersteinabef55a2016-06-19 12:49:00 -0700673 public static int getColorAccent(Context context) {
674 TypedArray ta = context.obtainStyledAttributes(new int[]{android.R.attr.colorAccent});
675 int colorAccent = ta.getColor(0, 0);
676 ta.recycle();
677 return colorAccent;
678 }
Sunny Goyal52851aa2016-09-02 10:41:43 -0700679
680 public static void sendCustomAccessibilityEvent(View target, int type, String text) {
681 AccessibilityManager accessibilityManager = (AccessibilityManager)
682 target.getContext().getSystemService(Context.ACCESSIBILITY_SERVICE);
683 if (accessibilityManager.isEnabled()) {
684 AccessibilityEvent event = AccessibilityEvent.obtain(type);
685 target.onInitializeAccessibilityEvent(event);
686 event.getText().add(text);
687 accessibilityManager.sendAccessibilityEvent(event);
688 }
689 }
The Android Open Source Project31dd5032009-03-03 19:32:27 -0800690}