Initial CL for Web APKs

chrome/android/webapk/shell_apk/src/org/chromium/webapk/shell_apk/MainActivity.java

+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.webapk.shell_apk;
+
+import android.app.Activity;
+import android.content.ComponentName;
+import android.content.Intent;
+import android.content.pm.ApplicationInfo;
+import android.content.pm.PackageManager;
+import android.content.pm.PackageManager.NameNotFoundException;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.os.Bundle;
+import android.util.Base64;
+import android.util.Log;
+
+import org.chromium.webapk.lib.common.WebApkConstants;
+
+import java.io.ByteArrayOutputStream;
+
+/**
+ * WebAPK's main Activity.
+ */
+public class MainActivity extends Activity {
+    private static final String EXTRA_ID = "org.chromium.chrome.browser.webapp_id";
+    private static final String EXTRA_ICON = "org.chromium.chrome.browser.webapp_icon";
+    private static final String EXTRA_NAME = "org.chromium.chrome.browser.webapp_name";
+    private static final String EXTRA_URL = "org.chromium.chrome.browser.webapp_url";
+    private static final String EXTRA_MAC = "org.chromium.chrome.browser.webapp_mac";
+    private static final String EXTRA_SCOPE = "org.chromium.chrome.browser.webapp_scope";
+    private static final String META_DATA_HOST_URL = "hostUrl";
+    private static final String META_DATA_MAC = "mac";
+    private static final String META_DATA_SCOPE = "scope";
+    private static final String META_DATA_RUNTIME_HOST = "runtimeHost";
+
+    private static final String TAG = "cr_MainActivity";
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        String packageName = getPackageName();
+        String webappId = null;
+        String mac = null;
+        String name = null;
+        String url = null;
+        String scope = null;
+        String encodedIcon = null;
+        String runtimeHost = null;
+        try {
+            ApplicationInfo appInfo = getPackageManager().getApplicationInfo(
+                    packageName, PackageManager.GET_META_DATA);
+            Bundle bundle = appInfo.metaData;
+            url = bundle.getString(META_DATA_HOST_URL);
+            scope = bundle.getString(META_DATA_SCOPE);
+            webappId = WebApkConstants.WEBAPK_ID_PREFIX + packageName;
+            mac = bundle.getString(META_DATA_MAC);
+            runtimeHost = bundle.getString(META_DATA_RUNTIME_HOST);
+            name = (String) getPackageManager().getApplicationLabel(appInfo);
+            // TODO(hanxi): find a neat solution to avoid encode/decode each time launch the
+            // activity.
+            Bitmap icon = BitmapFactory.decodeResource(getResources(), R.drawable.app_icon);
+            encodedIcon = encodeBitmapAsString(icon);
+            Log.w(TAG, "Url of the WebAPK: " + url);
+            Log.w(TAG, "webappId of the WebAPK: " + webappId);
+            Log.w(TAG, "name of the WebAPK:" + name);
+        } catch (NameNotFoundException e) {
+            e.printStackTrace();
+        }
+
+        Intent newIntent = new Intent();
+        newIntent.setComponent(new ComponentName(runtimeHost,
+                "org.chromium.chrome.browser.webapps.WebappLauncherActivity"));
+        newIntent.putExtra(EXTRA_ID, webappId);
+        newIntent.putExtra(EXTRA_NAME, name);
+        newIntent.putExtra(EXTRA_SCOPE, scope);
+        newIntent.putExtra(EXTRA_URL, url);
+        newIntent.putExtra(EXTRA_MAC, mac);
+        newIntent.putExtra(EXTRA_ICON, encodedIcon);
+        startActivity(newIntent);
+        finish();
+    }
+
+    /**
+     * Compresses a bitmap into a PNG and converts into a Base64 encoded string.
+     * The encoded string can be decoded using {@link decodeBitmapFromString(String)}.
+     * @param bitmap The Bitmap to compress and encode.
+     * @return the String encoding the Bitmap.
+     */
+    private static String encodeBitmapAsString(Bitmap bitmap) {
+        if (bitmap == null) return "";
+        ByteArrayOutputStream output = new ByteArrayOutputStream();
+        bitmap.compress(Bitmap.CompressFormat.PNG, 100, output);
+        return Base64.encodeToString(output.toByteArray(), Base64.DEFAULT);
+    }
+}