CameraPicker.java revision cead50ba3ce2df3bd9fcf06c6f54ea0c6980f0d7 
1/*
2 * Copyright (C) 2010 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.camera.ui;
18
19import com.android.camera.ListPreference;
20
21import android.content.Context;
22import android.hardware.Camera.CameraInfo;
23import android.util.AttributeSet;
24import android.view.View;
25import android.widget.ImageView;
26
27/**
28 * A view for switching the front/back camera.
29 */
30public class CameraPicker extends RotateImageView implements View.OnClickListener {
31    private Listener mListener;
32    private ListPreference mPreference;
33    private CharSequence[] mCameras;
34    private int mCameraIndex;
35
36    public CameraPicker(Context context, AttributeSet attrs) {
37        super(context, attrs);
38    }
39
40    static public interface Listener {
41        public void onSharedPreferenceChanged();
42    }
43
44    public void setListener(Listener listener) {
45        mListener = listener;
46    }
47
48    public void initialize(ListPreference pref) {
49        mPreference = pref;
50        mCameras = pref.getEntryValues();
51        if (mCameras == null) return;
52        setOnClickListener(this);
53        String cameraId = pref.getValue();
54        setVisibility(View.VISIBLE);
55        if (mCameras[CameraInfo.CAMERA_FACING_FRONT].equals(cameraId)) {
56            mCameraIndex = CameraInfo.CAMERA_FACING_FRONT;
57        } else {
58            mCameraIndex = CameraInfo.CAMERA_FACING_BACK;
59        }
60    }
61
62    @Override
63    public void onClick(View v) {
64        if (mCameras == null) return;
65        int newCameraIndex = (mCameraIndex == CameraInfo.CAMERA_FACING_BACK)
66                ? CameraInfo.CAMERA_FACING_FRONT
67                : CameraInfo.CAMERA_FACING_BACK;
68        mCameraIndex = newCameraIndex;
69        mPreference.setValue((String) mCameras[mCameraIndex]);
70        mListener.onSharedPreferenceChanged();
71    }
72}
73