1 files changed, 150 insertions, 0 deletions
diff --git a/src/com/android/packageinstaller/PackageUtil.java b/src/com/android/packageinstaller/PackageUtil.java
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+++ b/src/com/android/packageinstaller/PackageUtil.java
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+/*
+**
+** Copyright 2007, 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.packageinstaller;
+
+import java.io.File;
+import java.util.List;
+
+import android.app.Activity;
+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.PackageParser;
+import android.content.pm.ResolveInfo;
+import android.content.pm.PackageParser.Package;
+import android.content.res.AssetManager;
+import android.content.res.Resources;
+import android.graphics.drawable.Drawable;
+import android.net.Uri;
+import android.util.DisplayMetrics;
+import android.util.Log;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+/**
+ * This is a utility class for defining some utility methods and constants
+ * used in the package installer application.
+ */
+public class PackageUtil {
+    public static final String PREFIX="com.android.packageinstaller.";
+    public static final String INTENT_ATTR_INSTALL_STATUS = PREFIX+"installStatus";
+    public static final String INTENT_ATTR_APPLICATION_INFO=PREFIX+"applicationInfo";
+    public static final String INTENT_ATTR_PERMISSIONS_LIST=PREFIX+"PermissionsList";
+    //intent attribute strings related to uninstall
+    public static final String INTENT_ATTR_PACKAGE_NAME=PREFIX+"PackageName";
+    
+    /*
+     * Utility method to get application information for a given packageURI
+     */
+    public static  ApplicationInfo getApplicationInfo(Uri packageURI) {
+        final String archiveFilePath = packageURI.getPath();
+        PackageParser packageParser = new PackageParser(archiveFilePath);
+        File sourceFile = new File(archiveFilePath);
+        DisplayMetrics metrics = new DisplayMetrics();
+        metrics.setToDefaults();
+        Package pkg = packageParser.parsePackage(sourceFile, archiveFilePath, metrics, 0);
+        if (pkg == null) {
+            return null;
+        }
+        return pkg.applicationInfo;
+    }
+    
+    /*
+     * Utility method to get package information for a given packageURI
+     */
+    public static  Package getPackageInfo(Uri packageURI) {
+        final String archiveFilePath = packageURI.getPath();
+        PackageParser packageParser = new PackageParser(archiveFilePath);
+        File sourceFile = new File(archiveFilePath);
+        DisplayMetrics metrics = new DisplayMetrics();
+        metrics.setToDefaults();
+        return packageParser.parsePackage(sourceFile, archiveFilePath, metrics, 0);
+    }
+    
+    /*
+     * Utility method to get application label from package manager for a given context
+     */
+    public static CharSequence getApplicationLabel(Context context, ApplicationInfo appInfo) {
+        CharSequence appName = context.getPackageManager().getApplicationLabel(appInfo);
+        if(appName == null) {
+            appName = context.getString(R.string.unknown);
+        }
+        return appName;
+    }
+    
+    /*
+     * Utility method to getApplicationIcon from package manager for a given context
+     */
+    public static Drawable getApplicationIcon(Context context, ApplicationInfo appInfo) {
+        return context.getPackageManager().getApplicationIcon(appInfo);
+    }
+    
+    /*
+     * Utility method to display application snippet. make sure to setContentView on context
+     * before invoking this method
+     */
+    public static View initAppSnippet(Activity context, ApplicationInfo appInfo, int snippetId) {        
+        View appSnippet = context.findViewById(snippetId);        
+        ((ImageView)appSnippet.findViewById(R.id.app_icon)).setImageDrawable(
+                getApplicationIcon(context, appInfo));
+        ((TextView)appSnippet.findViewById(R.id.app_name)).setText(
+                getApplicationLabel(context, appInfo));
+        return appSnippet;
+    }
+    
+    public static boolean isPackageAlreadyInstalled(Activity context, String pkgName) {
+        List<PackageInfo> installedList = context.getPackageManager().getInstalledPackages(0);
+        int installedListSize = installedList.size();
+        for(int i = 0; i < installedListSize; i++) {
+            PackageInfo tmp = installedList.get(i);
+            if(pkgName.equalsIgnoreCase(tmp.packageName)) {
+                return true;
+            }
+            
+        }
+        return false;
+    }
+    
+    /**
+     * Returns an intent that can be used to launch the main activity in the given package. 
+     * 
+     * @param ctx
+     * @param packageName
+     * @return an intent launching the main activity in the given package
+     */
+    public static Intent getLaunchIntentForPackage(Context ctx, String packageName) {
+        Intent intent = new Intent(Intent.ACTION_MAIN);
+        intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+        PackageManager manager = ctx.getPackageManager();
+        Intent intentToResolve = new Intent(Intent.ACTION_MAIN, null);
+        intentToResolve.addCategory(Intent.CATEGORY_LAUNCHER);
+        final List<ResolveInfo> apps =
+                manager.queryIntentActivities(intentToResolve, 0);
+        // TODO in future add a new tag to application for launchable main activity
+        for (ResolveInfo app : apps) {
+            if (app.activityInfo.packageName.equals(packageName)) {
+                intent.setClassName(packageName, app.activityInfo.name);
+                return intent;
+            }
+        }
+        return null;
+    }
+}