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 
17 package com.android.camerabrowser;
18 
19 import android.app.ListActivity;
20 import android.content.Context;
21 import android.content.Intent;
22 import android.database.Cursor;
23 import android.graphics.Bitmap;
24 import android.graphics.BitmapFactory;
25 import android.mtp.MtpConstants;
26 import android.mtp.MtpDevice;
27 import android.mtp.MtpObjectInfo;
28 import android.os.Bundle;
29 import android.util.Log;
30 import android.view.LayoutInflater;
31 import android.view.View;
32 import android.view.ViewGroup;
33 import android.widget.BaseAdapter;
34 import android.widget.ImageView;
35 import android.widget.ListView;
36 import android.widget.TextView;
37 
38 import java.util.List;
39 
40  /**
41  * A list view displaying all objects within a container (folder or storage unit).
42  */
43 public class ObjectBrowser extends ListActivity {
44 
45     private static final String TAG = "ObjectBrowser";
46 
47     private MtpClient mClient;
48     private List<MtpObjectInfo> mObjectList;
49     private String mDeviceName;
50     private int mStorageID;
51     private int mObjectID;
52     private DeviceDisconnectedReceiver mDisconnectedReceiver;
53 
54     private class ObjectAdapter extends BaseAdapter {
55         private final Context mContext;
56         private final LayoutInflater mInflater;
57 
ObjectAdapter(Context c)58         public ObjectAdapter(Context c) {
59             mContext = c;
60             mInflater = (LayoutInflater)c.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
61         }
62 
getCount()63         public int getCount() {
64             if (mObjectList == null) {
65                 return 0;
66             } else {
67                 return mObjectList.size();
68             }
69         }
70 
getItem(int position)71         public Object getItem(int position) {
72             return mObjectList.get(position);
73         }
74 
getItemId(int position)75         public long getItemId(int position) {
76             return position;
77         }
78 
getView(int position, View convertView, ViewGroup parent)79         public View getView(int position, View convertView, ViewGroup parent) {
80             View view;
81             if (convertView == null) {
82                 view = mInflater.inflate(R.layout.object_list, parent, false);
83             } else {
84                 view = convertView;
85             }
86 
87             TextView nameView = (TextView)view.findViewById(R.id.name);
88             MtpObjectInfo info = mObjectList.get(position);
89             nameView.setText(info.getName());
90 
91             int thumbFormat = info.getThumbFormat();
92             if (thumbFormat == MtpConstants.FORMAT_EXIF_JPEG
93                     || thumbFormat == MtpConstants.FORMAT_JFIF) {
94                 byte[] thumbnail = mClient.getThumbnail(mDeviceName, info.getObjectHandle());
95                 if (thumbnail != null) {
96                     Bitmap bitmap = BitmapFactory.decodeByteArray(thumbnail, 0, thumbnail.length);
97                     if (bitmap != null) {
98                         ImageView thumbView = (ImageView)view.findViewById(R.id.thumbnail);
99                         thumbView.setImageBitmap(bitmap);
100                     }
101                 }
102             }
103             return view;
104         }
105     }
106 
107     @Override
onCreate(Bundle savedInstanceState)108     protected void onCreate(Bundle savedInstanceState) {
109         super.onCreate(savedInstanceState);
110 
111         mClient = ((CameraBrowserApplication)getApplication()).getMtpClient();
112         mDeviceName = getIntent().getStringExtra("device");
113         mStorageID = getIntent().getIntExtra("storage", 0);
114         mObjectID = getIntent().getIntExtra("object", 0);
115         mDisconnectedReceiver = new DeviceDisconnectedReceiver(this, mDeviceName);
116     }
117 
118     @Override
onResume()119     protected void onResume() {
120         super.onResume();
121 
122         mObjectList = mClient.getObjectList(mDeviceName, mStorageID, mObjectID);
123         setListAdapter(new ObjectAdapter(this));
124     }
125 
126     @Override
onDestroy()127     protected void onDestroy() {
128         unregisterReceiver(mDisconnectedReceiver);
129         super.onDestroy();
130     }
131 
132     @Override
onListItemClick(ListView l, View v, int position, long id)133     protected void onListItemClick(ListView l, View v, int position, long id) {
134         MtpObjectInfo info = mObjectList.get(position);
135         Intent intent;
136         if (info.getFormat() == MtpConstants.FORMAT_ASSOCIATION) {
137             intent = new Intent(this, ObjectBrowser.class);
138         } else {
139             intent = new Intent(this, ObjectViewer.class);
140         }
141         intent.putExtra("device", mDeviceName);
142         intent.putExtra("storage", mStorageID);
143         intent.putExtra("object", info.getObjectHandle());
144         startActivity(intent);
145     }
146 }
147