Support for USB accessory URIs

If a USB accessory is attached and we have no application that supports it,
display a dialog offering the user the option to visit the accessory's website
if the accessory has a URI.

Bug: 4073248

Change-Id: I30e2a802493fb6e203532a7f79402379c40bc3b8
Signed-off-by: Mike Lockwood <lockwood@android.com>

1 files changed, 100 insertions, 0 deletions

diff --git a/packages/SystemUI/src/com/android/systemui/usb/UsbAccessoryUriActivity.java b/packages/SystemUI/src/com/android/systemui/usb/UsbAccessoryUriActivity.java
new file mode 100644
index 0000000..eefb1c6
--- /dev/null
+++ b/packages/SystemUI/src/com/android/systemui/usb/UsbAccessoryUriActivity.java
@@ -0,0 +1,100 @@
+/*
+ * Copyright (C) 2011 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.systemui.usb;
+
+import android.app.Activity;
+import android.app.AlertDialog;
+import android.content.ActivityNotFoundException;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.content.Intent;
+import android.net.Uri;
+import android.hardware.usb.UsbAccessory;
+import android.hardware.usb.UsbManager;
+import android.os.Bundle;
+import android.util.Log;
+
+import com.android.internal.app.AlertActivity;
+import com.android.internal.app.AlertController;
+
+import com.android.systemui.R;
+
+/**
+ * If the attached USB accessory has a URL associated with it, and that URL is valid,
+ * show this dialog to the user to allow them to optionally visit that URL for more
+ * information or software downloads.
+ * Otherwise (no valid URL) this activity does nothing at all, finishing immediately.
+ */
+public class UsbAccessoryUriActivity extends AlertActivity
+        implements DialogInterface.OnClickListener {
+
+    private static final String TAG = "UsbAccessoryUriActivity";
+
+    private UsbAccessory mAccessory;
+    private Uri mUri;
+
+    @Override
+    public void onCreate(Bundle icicle) {
+       super.onCreate(icicle);
+
+       Intent intent = getIntent();
+        mAccessory = (UsbAccessory)intent.getParcelableExtra(UsbManager.EXTRA_ACCESSORY);
+        String uriString = intent.getStringExtra("uri");
+        mUri = (uriString == null ? null : Uri.parse(uriString));
+
+        // sanity check before displaying dialog
+        if (mUri == null) {
+            Log.e(TAG, "could not parse Uri " + uriString);
+            finish();
+            return;
+        }
+        String scheme = mUri.getScheme();
+        if (!"http".equals(scheme) && !"https".equals(scheme)) {
+            Log.e(TAG, "Uri not http or https: " + mUri);
+            finish();
+            return;
+        }
+
+        final AlertController.AlertParams ap = mAlertParams;
+        ap.mTitle = mAccessory.getDescription();
+        if (ap.mTitle == null || ap.mTitle.length() == 0) {
+            ap.mTitle = getString(R.string.title_usb_accessory);
+        }
+        ap.mMessage = getString(R.string.usb_accessory_uri_prompt, mUri);
+        ap.mPositiveButtonText = getString(R.string.label_view);
+        ap.mNegativeButtonText = getString(R.string.label_ignore);
+        ap.mPositiveButtonListener = this;
+        ap.mNegativeButtonListener = this;
+
+        setupAlert();
+    }
+
+    public void onClick(DialogInterface dialog, int which) {
+        if (which == AlertDialog.BUTTON_POSITIVE) {
+            // launch the browser
+            Intent intent = new Intent(Intent.ACTION_VIEW, mUri);
+            intent.addCategory(Intent.CATEGORY_BROWSABLE);
+            intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+            try {
+                startActivity(intent);
+            } catch (ActivityNotFoundException e) {
+                Log.e(TAG, "startActivity failed for " + mUri);
+            }
+        }
+        finish();
+    }
+}