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Merge pull request #770 from StepicOrg/release/1.160
Release/1.160
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115 changes: 115 additions & 0 deletions
115
app/src/main/java/org/stepik/android/view/base/web/CustomTabsHelper.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,115 @@ | ||
| package org.stepik.android.view.base.web; | ||
|
|
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| import android.content.Context; | ||
| import android.content.Intent; | ||
| import android.content.IntentFilter; | ||
| import android.content.pm.PackageManager; | ||
| import android.content.pm.ResolveInfo; | ||
| import android.net.Uri; | ||
| import android.text.TextUtils; | ||
| import android.util.Log; | ||
|
|
||
| import java.util.ArrayList; | ||
| import java.util.List; | ||
|
|
||
| /** | ||
| * Helper class for Custom Tabs. | ||
| */ | ||
| public final class CustomTabsHelper { | ||
| private static final String TAG = "CustomTabsHelper"; | ||
| static final String STABLE_PACKAGE = "com.android.chrome"; | ||
| static final String BETA_PACKAGE = "com.chrome.beta"; | ||
| static final String DEV_PACKAGE = "com.chrome.dev"; | ||
| static final String LOCAL_PACKAGE = "com.google.android.apps.chrome"; | ||
| private static final String EXTRA_CUSTOM_TABS_KEEP_ALIVE = | ||
| "android.support.customtabs.extra.KEEP_ALIVE"; | ||
| private static final String ACTION_CUSTOM_TABS_CONNECTION = | ||
| "android.support.customtabs.action.CustomTabsService"; | ||
|
|
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| private static String sPackageNameToUse; | ||
|
|
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| private CustomTabsHelper() {} | ||
|
|
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| /** | ||
| * Goes through all apps that handle VIEW intents and have a warmup service. Picks | ||
| * the one chosen by the user if there is one, otherwise makes a best effort to return a | ||
| * valid package name. | ||
| * | ||
| * This is <strong>not</strong> threadsafe. | ||
| * | ||
| * @param context {@link Context} to use for accessing {@link PackageManager}. | ||
| * @return The package name recommended to use for connecting to custom tabs related components. | ||
| */ | ||
| public static String getPackageNameToUse(Context context) { | ||
| if (sPackageNameToUse != null) return sPackageNameToUse; | ||
|
|
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| PackageManager pm = context.getPackageManager(); | ||
| // Get default VIEW intent handler. | ||
| Intent activityIntent = new Intent(Intent.ACTION_VIEW, Uri.parse("http://www.example.com")); | ||
| ResolveInfo defaultViewHandlerInfo = pm.resolveActivity(activityIntent, 0); | ||
| String defaultViewHandlerPackageName = null; | ||
| if (defaultViewHandlerInfo != null) { | ||
| defaultViewHandlerPackageName = defaultViewHandlerInfo.activityInfo.packageName; | ||
| } | ||
|
|
||
| // Get all apps that can handle VIEW intents. | ||
| List<ResolveInfo> resolvedActivityList = pm.queryIntentActivities(activityIntent, 0); | ||
| List<String> packagesSupportingCustomTabs = new ArrayList<>(); | ||
| for (ResolveInfo info : resolvedActivityList) { | ||
| Intent serviceIntent = new Intent(); | ||
| serviceIntent.setAction(ACTION_CUSTOM_TABS_CONNECTION); | ||
| serviceIntent.setPackage(info.activityInfo.packageName); | ||
| if (pm.resolveService(serviceIntent, 0) != null) { | ||
| packagesSupportingCustomTabs.add(info.activityInfo.packageName); | ||
| } | ||
| } | ||
|
|
||
| // Now packagesSupportingCustomTabs contains all apps that can handle both VIEW intents | ||
| // and service calls. | ||
| if (packagesSupportingCustomTabs.isEmpty()) { | ||
| sPackageNameToUse = null; | ||
| } else if (packagesSupportingCustomTabs.size() == 1) { | ||
| sPackageNameToUse = packagesSupportingCustomTabs.get(0); | ||
| } else if (!TextUtils.isEmpty(defaultViewHandlerPackageName) | ||
| && !hasSpecializedHandlerIntents(context, activityIntent) | ||
| && packagesSupportingCustomTabs.contains(defaultViewHandlerPackageName)) { | ||
| sPackageNameToUse = defaultViewHandlerPackageName; | ||
| } else if (packagesSupportingCustomTabs.contains(STABLE_PACKAGE)) { | ||
| sPackageNameToUse = STABLE_PACKAGE; | ||
| } else if (packagesSupportingCustomTabs.contains(BETA_PACKAGE)) { | ||
| sPackageNameToUse = BETA_PACKAGE; | ||
| } else if (packagesSupportingCustomTabs.contains(DEV_PACKAGE)) { | ||
| sPackageNameToUse = DEV_PACKAGE; | ||
| } else if (packagesSupportingCustomTabs.contains(LOCAL_PACKAGE)) { | ||
| sPackageNameToUse = LOCAL_PACKAGE; | ||
| } | ||
| return sPackageNameToUse; | ||
| } | ||
|
|
||
| /** | ||
| * Used to check whether there is a specialized handler for a given intent. | ||
| * @param intent The intent to check with. | ||
| * @return Whether there is a specialized handler for the given intent. | ||
| */ | ||
| private static boolean hasSpecializedHandlerIntents(Context context, Intent intent) { | ||
| try { | ||
| PackageManager pm = context.getPackageManager(); | ||
| List<ResolveInfo> handlers = pm.queryIntentActivities( | ||
| intent, | ||
| PackageManager.GET_RESOLVED_FILTER); | ||
| if (handlers.size() == 0) { | ||
| return false; | ||
| } | ||
| for (ResolveInfo resolveInfo : handlers) { | ||
| IntentFilter filter = resolveInfo.filter; | ||
| if (filter == null) continue; | ||
| if (filter.countDataAuthorities() == 0 || filter.countDataPaths() == 0) continue; | ||
| if (resolveInfo.activityInfo == null) continue; | ||
| return true; | ||
| } | ||
| } catch (RuntimeException e) { | ||
| Log.e(TAG, "Runtime exception while getting specialized handlers"); | ||
| } | ||
| return false; | ||
| } | ||
| } |
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