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/*
* 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.Ptp;
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[] { Ptp.Device._ID, Ptp.Device.MANUFACTURER, Ptp.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(Ptp.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[] { Ptp.Device.MANUFACTURER, Ptp.Device.MODEL },
new int[] { android.R.id.text1, android.R.id.text2 });
setListAdapter(mAdapter);
// register for changes to the device list
mResolver.registerContentObserver(Ptp.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);
}
}
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