| /* |
| * Copyright (C) 2010 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.camerabrowser; |
| |
| import android.app.ListActivity; |
| import android.content.ContentResolver; |
| import android.content.Intent; |
| import android.database.ContentObserver; |
| import android.database.Cursor; |
| import android.net.Uri; |
| import android.os.Bundle; |
| import android.os.Handler; |
| import android.provider.Mtp; |
| import android.util.Log; |
| import android.view.View; |
| import android.widget.ListAdapter; |
| import android.widget.ListView; |
| import android.widget.SimpleCursorAdapter; |
| |
| /** |
| * A list view displaying all connected cameras. |
| */ |
| public class CameraBrowser extends ListActivity { |
| |
| private static final String TAG = "CameraBrowser"; |
| |
| private ListAdapter mAdapter; |
| private ContentResolver mResolver; |
| private DeviceObserver mDeviceObserver; |
| private Cursor mCursor; |
| |
| private class DeviceObserver extends ContentObserver { |
| DeviceObserver(Handler handler) { |
| super(handler); |
| } |
| |
| @Override |
| public void onChange(boolean selfChange) { |
| Log.d(TAG, "DeviceObserver.onChange"); |
| if (mCursor != null) { |
| mCursor.requery(); |
| } |
| } |
| } |
| |
| private static final String[] DEVICE_COLUMNS = |
| new String[] { Mtp.Device._ID, Mtp.Device.MANUFACTURER, Mtp.Device.MODEL }; |
| |
| @Override |
| protected void onCreate(Bundle savedInstanceState) { |
| super.onCreate(savedInstanceState); |
| mResolver = getContentResolver(); |
| mDeviceObserver = new DeviceObserver(new Handler()); |
| } |
| |
| @Override |
| protected void onResume() { |
| super.onResume(); |
| |
| Cursor c = getContentResolver().query(Mtp.Device.CONTENT_URI, |
| DEVICE_COLUMNS, null, null, null); |
| Log.d(TAG, "query returned " + c); |
| startManagingCursor(c); |
| mCursor = c; |
| |
| // Map Cursor columns to views defined in simple_list_item_2.xml |
| mAdapter = new SimpleCursorAdapter(this, |
| android.R.layout.simple_list_item_2, c, |
| new String[] { Mtp.Device.MANUFACTURER, Mtp.Device.MODEL }, |
| new int[] { android.R.id.text1, android.R.id.text2 }); |
| setListAdapter(mAdapter); |
| |
| // register for changes to the device list |
| mResolver.registerContentObserver(Mtp.Device.CONTENT_URI, true, mDeviceObserver); |
| } |
| |
| @Override |
| protected void onPause() { |
| super.onPause(); |
| mResolver.unregisterContentObserver(mDeviceObserver); |
| } |
| |
| @Override |
| protected void onListItemClick(ListView l, View v, int position, long id) { |
| Intent intent = new Intent(this, StorageBrowser.class); |
| intent.putExtra("device", (int)mAdapter.getItemId(position)); |
| startActivity(intent); |
| } |
| } |