/*
* Copyright (C) 2008 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.android.launcher3;
import android.annotation.TargetApi;
import android.app.Activity;
import android.app.SearchManager;
import android.appwidget.AppWidgetManager;
import android.appwidget.AppWidgetProviderInfo;
import android.content.ActivityNotFoundException;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;
import android.content.pm.ResolveInfo;
import android.content.res.Resources;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.PaintFlagsDrawFilter;
import android.graphics.Rect;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.PaintDrawable;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.Build;
import android.os.Bundle;
import android.os.Process;
import android.text.TextUtils;
import android.util.DisplayMetrics;
import android.util.Log;
import android.util.Pair;
import android.util.SparseArray;
import android.util.TypedValue;
import android.view.View;
import android.widget.Toast;
import com.android.launcher3.settings.SettingsProvider;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Locale;
import java.util.Set;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* Various utilities shared amongst the Launcher's classes.
*/
public final class Utilities {
private static final String TAG = "Launcher.Utilities";
private static final Rect sOldBounds = new Rect();
private static final Canvas sCanvas = new Canvas();
private static final Pattern sTrimPattern =
Pattern.compile("^[\\s|\\p{javaSpaceChar}]*(.*)[\\s|\\p{javaSpaceChar}]*$");
static {
sCanvas.setDrawFilter(new PaintFlagsDrawFilter(Paint.DITHER_FLAG,
Paint.FILTER_BITMAP_FLAG));
}
static int sColors[] = { 0xffff0000, 0xff00ff00, 0xff0000ff };
static int sColorIndex = 0;
private static final int[] sLoc0 = new int[2];
private static final int[] sLoc1 = new int[2];
// TODO: use Build.VERSION_CODES when available
public static final boolean ATLEAST_MARSHMALLOW = Build.VERSION.SDK_INT >= 23;
public static final boolean ATLEAST_LOLLIPOP_MR1 =
Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP_MR1;
public static final boolean ATLEAST_LOLLIPOP =
Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP;
public static final boolean ATLEAST_KITKAT =
Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;
public static final boolean ATLEAST_JB_MR1 =
Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1;
public static final boolean ATLEAST_JB_MR2 =
Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2;
// To turn on these properties, type
// adb shell setprop log.tag.PROPERTY_NAME [VERBOSE | SUPPRESS]
private static final String FORCE_ENABLE_ROTATION_PROPERTY = "launcher_force_rotate";
private static boolean sForceEnableRotation = isPropertyEnabled(FORCE_ENABLE_ROTATION_PROPERTY);
public static boolean isPropertyEnabled(String propertyName) {
return Log.isLoggable(propertyName, Log.VERBOSE);
}
public static boolean isAllowRotationPrefEnabled(Context context, boolean multiProcess) {
boolean allowRotationPref = SettingsProvider.getBoolean(context,
SettingsProvider.SETTINGS_UI_ALLOW_ROTATION,
R.bool.preferences_interface_allow_rotation);
return sForceEnableRotation || allowRotationPref;
}
public static boolean isRotationAllowedForDevice(Context context) {
return sForceEnableRotation || context.getResources().getBoolean(R.bool.preferences_interface_allow_rotation);
}
public static Bitmap createIconBitmap(Cursor c, int iconIndex, Context context) {
byte[] data = c.getBlob(iconIndex);
try {
return createIconBitmap(BitmapFactory.decodeByteArray(data, 0, data.length), context);
} catch (Exception e) {
return null;
}
}
/**
* Returns a bitmap suitable for the all apps view. If the package or the resource do not
* exist, it returns null.
*/
public static Bitmap createIconBitmap(String packageName, String resourceName,
Context context) {
PackageManager packageManager = context.getPackageManager();
// the resource
try {
Resources resources = packageManager.getResourcesForApplication(packageName);
if (resources != null) {
final int id = resources.getIdentifier(resourceName, null, null);
return createIconBitmap(
resources.getDrawableForDensity(id, LauncherAppState.getInstance()
.getInvariantDeviceProfile().fillResIconDpi), context);
}
} catch (Exception e) {
// Icon not found.
}
return null;
}
private static int getIconBitmapSize() {
return LauncherAppState.getInstance().getInvariantDeviceProfile().iconBitmapSize;
}
/**
* Returns a bitmap which is of the appropriate size to be displayed as an icon
*/
public static Bitmap createIconBitmap(Bitmap icon, Context context) {
final int iconBitmapSize = getIconBitmapSize();
if (iconBitmapSize == icon.getWidth() && iconBitmapSize == icon.getHeight()) {
return icon;
}
return createIconBitmap(new BitmapDrawable(context.getResources(), icon), context);
}
/**
* Returns a bitmap suitable for the all apps view.
*/
public static Bitmap createIconBitmap(Drawable icon, Context context) {
synchronized (sCanvas) {
final int iconBitmapSize = getIconBitmapSize();
int width = iconBitmapSize;
int height = iconBitmapSize;
if (icon instanceof PaintDrawable) {
PaintDrawable painter = (PaintDrawable) icon;
painter.setIntrinsicWidth(width);
painter.setIntrinsicHeight(height);
} else if (icon instanceof BitmapDrawable) {
// Ensure the bitmap has a density.
BitmapDrawable bitmapDrawable = (BitmapDrawable) icon;
Bitmap bitmap = bitmapDrawable.getBitmap();
if (bitmap.getDensity() == Bitmap.DENSITY_NONE) {
bitmapDrawable.setTargetDensity(context.getResources().getDisplayMetrics());
}
}
int sourceWidth = icon.getIntrinsicWidth();
int sourceHeight = icon.getIntrinsicHeight();
if (sourceWidth > 0 && sourceHeight > 0) {
// Scale the icon proportionally to the icon dimensions
final float ratio = (float) sourceWidth / sourceHeight;
if (sourceWidth > sourceHeight) {
height = (int) (width / ratio);
} else if (sourceHeight > sourceWidth) {
width = (int) (height * ratio);
}
}
// no intrinsic size --> use default size
int textureWidth = iconBitmapSize;
int textureHeight = iconBitmapSize;
final Bitmap bitmap = Bitmap.createBitmap(textureWidth, textureHeight,
Bitmap.Config.ARGB_8888);
final Canvas canvas = sCanvas;
canvas.setBitmap(bitmap);
final int left = (textureWidth-width) / 2;
final int top = (textureHeight-height) / 2;
@SuppressWarnings("all") // suppress dead code warning
final boolean debug = false;
if (debug) {
// draw a big box for the icon for debugging
canvas.drawColor(sColors[sColorIndex]);
if (++sColorIndex >= sColors.length) sColorIndex = 0;
Paint debugPaint = new Paint();
debugPaint.setColor(0xffcccc00);
canvas.drawRect(left, top, left+width, top+height, debugPaint);
}
sOldBounds.set(icon.getBounds());
icon.setBounds(left, top, left+width, top+height);
icon.draw(canvas);
icon.setBounds(sOldBounds);
canvas.setBitmap(null);
return bitmap;
}
}
/**
* Given a coordinate relative to the descendant, find the coordinate in a parent view's
* coordinates.
*
* @param descendant The descendant to which the passed coordinate is relative.
* @param root The root view to make the coordinates relative to.
* @param coord The coordinate that we want mapped.
* @param includeRootScroll Whether or not to account for the scroll of the descendant:
* sometimes this is relevant as in a child's coordinates within the descendant.
* @return The factor by which this descendant is scaled relative to this DragLayer. Caution
* this scale factor is assumed to be equal in X and Y, and so if at any point this
* assumption fails, we will need to return a pair of scale factors.
*/
public static float getDescendantCoordRelativeToParent(View descendant, View root,
int[] coord, boolean includeRootScroll) {
ArrayList<View> ancestorChain = new ArrayList<View>();
float[] pt = {coord[0], coord[1]};
View v = descendant;
while(v != root && v != null) {
ancestorChain.add(v);
v = (View) v.getParent();
}
ancestorChain.add(root);
float scale = 1.0f;
int count = ancestorChain.size();
for (int i = 0; i < count; i++) {
View v0 = ancestorChain.get(i);
// For TextViews, scroll has a meaning which relates to the text position
// which is very strange... ignore the scroll.
if (v0 != descendant || includeRootScroll) {
pt[0] -= v0.getScrollX();
pt[1] -= v0.getScrollY();
}
v0.getMatrix().mapPoints(pt);
pt[0] += v0.getLeft();
pt[1] += v0.getTop();
scale *= v0.getScaleX();
}
coord[0] = (int) Math.round(pt[0]);
coord[1] = (int) Math.round(pt[1]);
return scale;
}
/**
* Inverse of {@link #getDescendantCoordRelativeToSelf(View, int[])}.
*/
public static float mapCoordInSelfToDescendent(View descendant, View root,
int[] coord) {
ArrayList<View> ancestorChain = new ArrayList<View>();
float[] pt = {coord[0], coord[1]};
View v = descendant;
while(v != root) {
ancestorChain.add(v);
v = (View) v.getParent();
}
ancestorChain.add(root);
float scale = 1.0f;
Matrix inverse = new Matrix();
int count = ancestorChain.size();
for (int i = count - 1; i >= 0; i--) {
View ancestor = ancestorChain.get(i);
View next = i > 0 ? ancestorChain.get(i-1) : null;
pt[0] += ancestor.getScrollX();
pt[1] += ancestor.getScrollY();
if (next != null) {
pt[0] -= next.getLeft();
pt[1] -= next.getTop();
next.getMatrix().invert(inverse);
inverse.mapPoints(pt);
scale *= next.getScaleX();
}
}
coord[0] = (int) Math.round(pt[0]);
coord[1] = (int) Math.round(pt[1]);
return scale;
}
/**
* Utility method to determine whether the given point, in local coordinates,
* is inside the view, where the area of the view is expanded by the slop factor.
* This method is called while processing touch-move events to determine if the event
* is still within the view.
*/
public static boolean pointInView(View v, float localX, float localY, float slop) {
return localX >= -slop && localY >= -slop && localX < (v.getWidth() + slop) &&
localY < (v.getHeight() + slop);
}
public static void scaleRect(Rect r, float scale) {
if (scale != 1.0f) {
r.left = (int) (r.left * scale + 0.5f);
r.top = (int) (r.top * scale + 0.5f);
r.right = (int) (r.right * scale + 0.5f);
r.bottom = (int) (r.bottom * scale + 0.5f);
}
}
public static int[] getCenterDeltaInScreenSpace(View v0, View v1, int[] delta) {
v0.getLocationInWindow(sLoc0);
v1.getLocationInWindow(sLoc1);
sLoc0[0] += (v0.getMeasuredWidth() * v0.getScaleX()) / 2;
sLoc0[1] += (v0.getMeasuredHeight() * v0.getScaleY()) / 2;
sLoc1[0] += (v1.getMeasuredWidth() * v1.getScaleX()) / 2;
sLoc1[1] += (v1.getMeasuredHeight() * v1.getScaleY()) / 2;
if (delta == null) {
delta = new int[2];
}
delta[0] = sLoc1[0] - sLoc0[0];
delta[1] = sLoc1[1] - sLoc0[1];
return delta;
}
public static void scaleRectAboutCenter(Rect r, float scale) {
int cx = r.centerX();
int cy = r.centerY();
r.offset(-cx, -cy);
Utilities.scaleRect(r, scale);
r.offset(cx, cy);
}
public static void startActivityForResultSafely(
Activity activity, Intent intent, int requestCode) {
try {
activity.startActivityForResult(intent, requestCode);
} catch (ActivityNotFoundException e) {
Toast.makeText(activity, R.string.activity_not_found, Toast.LENGTH_SHORT).show();
} catch (SecurityException e) {
Toast.makeText(activity, R.string.activity_not_found, Toast.LENGTH_SHORT).show();
Log.e(TAG, "Launcher does not have the permission to launch " + intent +
". Make sure to create a MAIN intent-filter for the corresponding activity " +
"or use the exported attribute for this activity.", e);
}
}
static boolean isSystemApp(Context context, Intent intent) {
PackageManager pm = context.getPackageManager();
ComponentName cn = intent.getComponent();
String packageName = null;
if (cn == null) {
ResolveInfo info = pm.resolveActivity(intent, PackageManager.MATCH_DEFAULT_ONLY);
if ((info != null) && (info.activityInfo != null)) {
packageName = info.activityInfo.packageName;
}
} else {
packageName = cn.getPackageName();
}
if (packageName != null) {
try {
PackageInfo info = pm.getPackageInfo(packageName, 0);
return (info != null) && (info.applicationInfo != null) &&
((info.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) != 0);
} catch (NameNotFoundException e) {
return false;
}
} else {
return false;
}
}
/**
* This picks a dominant color, looking for high-saturation, high-value, repeated hues.
* @param bitmap The bitmap to scan
* @param samples The approximate max number of samples to use.
*/
static int findDominantColorByHue(Bitmap bitmap, int samples) {
final int height = bitmap.getHeight();
final int width = bitmap.getWidth();
int sampleStride = (int) Math.sqrt((height * width) / samples);
if (sampleStride < 1) {
sampleStride = 1;
}
// This is an out-param, for getting the hsv values for an rgb
float[] hsv = new float[3];
// First get the best hue, by creating a histogram over 360 hue buckets,
// where each pixel contributes a score weighted by saturation, value, and alpha.
float[] hueScoreHistogram = new float[360];
float highScore = -1;
int bestHue = -1;
for (int y = 0; y < height; y += sampleStride) {
for (int x = 0; x < width; x += sampleStride) {
int argb = bitmap.getPixel(x, y);
int alpha = 0xFF & (argb >> 24);
if (alpha < 0x80) {
// Drop mostly-transparent pixels.
continue;
}
// Remove the alpha channel.
int rgb = argb | 0xFF000000;
Color.colorToHSV(rgb, hsv);
// Bucket colors by the 360 integer hues.
int hue = (int) hsv[0];
if (hue < 0 || hue >= hueScoreHistogram.length) {
// Defensively avoid array bounds violations.
continue;
}
float score = hsv[1] * hsv[2];
hueScoreHistogram[hue] += score;
if (hueScoreHistogram[hue] > highScore) {
highScore = hueScoreHistogram[hue];
bestHue = hue;
}
}
}
SparseArray<Float> rgbScores = new SparseArray<Float>();
int bestColor = 0xff000000;
highScore = -1;
// Go back over the RGB colors that match the winning hue,
// creating a histogram of weighted s*v scores, for up to 100*100 [s,v] buckets.
// The highest-scoring RGB color wins.
for (int y = 0; y < height; y += sampleStride) {
for (int x = 0; x < width; x += sampleStride) {
int rgb = bitmap.getPixel(x, y) | 0xff000000;
Color.colorToHSV(rgb, hsv);
int hue = (int) hsv[0];
if (hue == bestHue) {
float s = hsv[1];
float v = hsv[2];
int bucket = (int) (s * 100) + (int) (v * 10000);
// Score by cumulative saturation * value.
float score = s * v;
Float oldTotal = rgbScores.get(bucket);
float newTotal = oldTotal == null ? score : oldTotal + score;
rgbScores.put(bucket, newTotal);
if (newTotal > highScore) {
highScore = newTotal;
// All the colors in the winning bucket are very similar. Last in wins.
bestColor = rgb;
}
}
}
}
return bestColor;
}
/*
* Finds a system apk which had a broadcast receiver listening to a particular action.
* @param action intent action used to find the apk
* @return a pair of apk package name and the resources.
*/
static Pair<String, Resources> findSystemApk(String action, PackageManager pm) {
final Intent intent = new Intent(action);
for (ResolveInfo info : pm.queryBroadcastReceivers(intent, 0)) {
if (info.activityInfo != null &&
(info.activityInfo.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) != 0) {
final String packageName = info.activityInfo.packageName;
try {
final Resources res = pm.getResourcesForApplication(packageName);
return Pair.create(packageName, res);
} catch (NameNotFoundException e) {
Log.w(TAG, "Failed to find resources for " + packageName);
}
}
}
return null;
}
@TargetApi(Build.VERSION_CODES.KITKAT)
public static boolean isViewAttachedToWindow(View v) {
if (ATLEAST_KITKAT) {
return v.isAttachedToWindow();
} else {
// A proxy call which returns null, if the view is not attached to the window.
return v.getKeyDispatcherState() != null;
}
}
/**
* Returns a widget with category {@link AppWidgetProviderInfo#WIDGET_CATEGORY_SEARCHBOX}
* provided by the same package which is set to be global search activity.
* If widgetCategory is not supported, or no such widget is found, returns the first widget
* provided by the package.
*/
@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
public static AppWidgetProviderInfo getSearchWidgetProvider(Context context) {
SearchManager searchManager =
(SearchManager) context.getSystemService(Context.SEARCH_SERVICE);
ComponentName searchComponent = searchManager.getGlobalSearchActivity();
if (searchComponent == null) return null;
String providerPkg = searchComponent.getPackageName();
AppWidgetProviderInfo defaultWidgetForSearchPackage = null;
AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(context);
for (AppWidgetProviderInfo info : appWidgetManager.getInstalledProviders()) {
if (info.provider.getPackageName().equals(providerPkg)) {
if (ATLEAST_JB_MR1) {
if ((info.widgetCategory & AppWidgetProviderInfo.WIDGET_CATEGORY_SEARCHBOX) != 0) {
return info;
} else if (defaultWidgetForSearchPackage == null) {
defaultWidgetForSearchPackage = info;
}
} else {
return info;
}
}
}
return defaultWidgetForSearchPackage;
}
/**
* Compresses the bitmap to a byte array for serialization.
*/
public static byte[] flattenBitmap(Bitmap bitmap) {
// Try go guesstimate how much space the icon will take when serialized
// to avoid unnecessary allocations/copies during the write.
int size = bitmap.getWidth() * bitmap.getHeight() * 4;
ByteArrayOutputStream out = new ByteArrayOutputStream(size);
try {
bitmap.compress(Bitmap.CompressFormat.PNG, 100, out);
out.flush();
out.close();
return out.toByteArray();
} catch (IOException e) {
Log.w(TAG, "Could not write bitmap");
return null;
}
}
/**
* Find the first vacant cell, if there is one.
*
* @param vacant Holds the x and y coordinate of the vacant cell
* @param spanX Horizontal cell span.
* @param spanY Vertical cell span.
*
* @return true if a vacant cell was found
*/
public static boolean findVacantCell(int[] vacant, int spanX, int spanY,
int xCount, int yCount, boolean[][] occupied) {
for (int y = 0; (y + spanY) <= yCount; y++) {
for (int x = 0; (x + spanX) <= xCount; x++) {
boolean available = !occupied[x][y];
out: for (int i = x; i < x + spanX; i++) {
for (int j = y; j < y + spanY; j++) {
available = available && !occupied[i][j];
if (!available) break out;
}
}
if (available) {
vacant[0] = x;
vacant[1] = y;
return true;
}
}
}
return false;
}
/**
* Trims the string, removing all whitespace at the beginning and end of the string.
* Non-breaking whitespaces are also removed.
*/
public static String trim(CharSequence s) {
if (s == null) {
return null;
}
// Just strip any sequence of whitespace or java space characters from the beginning and end
Matcher m = sTrimPattern.matcher(s);
return m.replaceAll("$1");
}
/**
* Calculates the height of a given string at a specific text size.
*/
public static float calculateTextHeight(float textSizePx) {
Paint p = new Paint();
p.setTextSize(textSizePx);
Paint.FontMetrics fm = p.getFontMetrics();
return -fm.top + fm.bottom;
}
/**
* Convenience println with multiple args.
*/
public static void println(String key, Object... args) {
StringBuilder b = new StringBuilder();
b.append(key);
b.append(": ");
boolean isFirstArgument = true;
for (Object arg : args) {
if (isFirstArgument) {
isFirstArgument = false;
} else {
b.append(", ");
}
b.append(arg);
}
System.out.println(b.toString());
}
@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
public static boolean isRtl(Resources res) {
return ATLEAST_JB_MR1 &&
(res.getConfiguration().getLayoutDirection() == View.LAYOUT_DIRECTION_RTL);
}
public static void assertWorkerThread() {
if (LauncherAppState.isDogfoodBuild() &&
(LauncherModel.sWorkerThread.getThreadId() != Process.myTid())) {
throw new IllegalStateException();
}
}
/**
* Returns true if the intent is a valid launch intent for a launcher activity of an app.
* This is used to identify shortcuts which are different from the ones exposed by the
* applications' manifest file.
*
* @param launchIntent The intent that will be launched when the shortcut is clicked.
*/
public static boolean isLauncherAppTarget(Intent launchIntent) {
if (launchIntent != null
&& Intent.ACTION_MAIN.equals(launchIntent.getAction())
&& launchIntent.getComponent() != null
&& launchIntent.getCategories() != null
&& launchIntent.getCategories().size() == 1
&& launchIntent.hasCategory(Intent.CATEGORY_LAUNCHER)
&& TextUtils.isEmpty(launchIntent.getDataString())) {
// An app target can either have no extra or have ItemInfo.EXTRA_PROFILE.
Bundle extras = launchIntent.getExtras();
if (extras == null) {
return true;
} else {
Set<String> keys = extras.keySet();
return keys.size() == 1 && keys.contains(ItemInfo.EXTRA_PROFILE);
}
};
return false;
}
public static float dpiFromPx(int size, DisplayMetrics metrics){
return (size / metrics.density);
}
public static int pxFromDp(float size, DisplayMetrics metrics) {
return (int) Math.round(TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP,
size, metrics));
}
public static int pxFromSp(float size, DisplayMetrics metrics) {
return (int) Math.round(TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP,
size, metrics));
}
public static String createDbSelectionQuery(String columnName, Iterable<?> values) {
return String.format(Locale.ENGLISH, "%s IN (%s)", columnName, TextUtils.join(", ", values));
}
public static boolean searchActivityExists(Context context) {
final SearchManager searchManager =
(SearchManager) context.getSystemService(Context.SEARCH_SERVICE);
ComponentName globalSearchActivity = searchManager.getGlobalSearchActivity();
return globalSearchActivity != null;
}
public static boolean isPackageInstalled(Context context, String pkg) {
PackageManager packageManager = context.getPackageManager();
try {
PackageInfo pi = packageManager.getPackageInfo(pkg, 0);
return pi.applicationInfo.enabled;
} catch (PackageManager.NameNotFoundException e) {
return false;
}
}
public static boolean isNetworkConnected(Context context) {
ConnectivityManager connectivityManager = (ConnectivityManager)context.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo activeNetwork = connectivityManager.getActiveNetworkInfo();
return activeNetwork != null && activeNetwork.isConnected();
}
public static boolean isConnectedToWiFi(Context context) {
ConnectivityManager connectivityManager = (ConnectivityManager)context.getSystemService(Context.CONNECTIVITY_SERVICE);
return connectivityManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI).isConnected();
}
}
