CameraPicker.java revision 9e76e8d6eec20739203d213ead1fe1aab3b939ae 
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;
20import com.android.camera.R;
21
22import android.content.Context;
23import android.hardware.Camera.CameraInfo;
24import android.util.AttributeSet;
25import android.view.View;
26import android.widget.ImageView;
27
28/**
29 * A view for switching the front/back camera.
30 */
31public class CameraPicker extends ImageView implements View.OnClickListener {
32    private Listener mListener;
33    private ListPreference mPreference;
34    private CharSequence[] mCameras;
35    private int mCameraIndex;
36
37    public CameraPicker(Context context, AttributeSet attrs) {
38        super(context, attrs);
39    }
40
41    static public interface Listener {
42        public void onSharedPreferenceChanged();
43    }
44
45    public void setListener(Listener listener) {
46        mListener = listener;
47    }
48
49    public void initialize(ListPreference pref) {
50        mPreference = pref;
51        mCameras = pref.getEntryValues();
52        if (mCameras == null) return;
53        setOnClickListener(this);
54        String cameraId = pref.getValue();
55        setVisibility(View.VISIBLE);
56        if (mCameras[CameraInfo.CAMERA_FACING_FRONT].equals(cameraId)) {
57            mCameraIndex = CameraInfo.CAMERA_FACING_FRONT;
58        } else {
59            mCameraIndex = CameraInfo.CAMERA_FACING_BACK;
60        }
61    }
62
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}
74