AppChooserActivity.java revision 78976de08ad5d5f9d5fcba28f3ea82350907a782 
1/*
2 * Copyright (C) 2013 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.nfc.cardemulation;
18
19import com.android.internal.R;
20import com.android.internal.app.AlertActivity;
21import com.android.internal.app.AlertController;
22
23import java.util.ArrayList;
24import java.util.List;
25
26import android.app.ActivityManager;
27import android.content.ComponentName;
28import android.content.Context;
29import android.content.Intent;
30import android.content.pm.ApplicationInfo;
31import android.content.pm.PackageManager;
32import android.content.pm.PackageManager.NameNotFoundException;
33import android.graphics.drawable.Drawable;
34import android.nfc.NfcAdapter;
35import android.nfc.cardemulation.CardEmulationManager;
36import android.os.Bundle;
37import android.util.Log;
38import android.view.LayoutInflater;
39import android.view.View;
40import android.view.ViewGroup;
41import android.widget.AdapterView;
42import android.widget.BaseAdapter;
43import android.widget.ImageView;
44import android.widget.ListView;
45import android.widget.TextView;
46
47public class AppChooserActivity extends AlertActivity
48        implements AdapterView.OnItemClickListener {
49
50    static final String TAG = "AppChooserActivity";
51
52    public static final String EXTRA_COMPONENTS = "components";
53    public static final String EXTRA_CATEGORY = "category";
54    public static final String EXTRA_FAILED_COMPONENT = "failed_component";
55
56    private int mIconSize;
57    private ListView mListView;
58    private ListAdapter mListAdapter;
59    private CardEmulationManager mCardEmuManager;
60    private String mCategory;
61
62    protected void onCreate(Bundle savedInstanceState, String category,
63            ArrayList<ComponentName> options, ComponentName failedComponent) {
64        setTheme(R.style.Theme_DeviceDefault_Light_Dialog_Alert);
65        super.onCreate(savedInstanceState);
66
67        if ((options == null || options.size() == 0) && failedComponent == null) {
68            Log.e(TAG, "No components passed in.");
69            finish();
70            return;
71        }
72
73        mCategory = category;
74
75        final NfcAdapter adapter = NfcAdapter.getDefaultAdapter(this);
76        mCardEmuManager = CardEmulationManager.getInstance(adapter);
77        AlertController.AlertParams ap = mAlertParams;
78
79        final ActivityManager am = (ActivityManager) getSystemService(ACTIVITY_SERVICE);
80        mIconSize = am.getLauncherLargeIconSize();
81
82        // Three cases:
83        // 1. Failed component and no alternatives: just an OK box
84        // 2. Failed component and alternatives: pick alternative
85        // 3. No failed component and alternatives: pick alternative
86        PackageManager pm = getPackageManager();
87
88        CharSequence applicationLabel = "unknown";
89        if (failedComponent != null) {
90            try {
91                ApplicationInfo info = pm.getApplicationInfo(failedComponent.getPackageName(), 0);
92                applicationLabel = info.loadLabel(pm);
93            } catch (NameNotFoundException e) {
94            }
95
96        }
97        if (options.size() == 0 && failedComponent != null) {
98            ap.mTitle = "";
99            ap.mMessage = "This transaction couldn't be completed with " + applicationLabel + ".";
100            ap.mPositiveButtonText = "OK";
101            setupAlert();
102        } else {
103            mListAdapter = new ListAdapter(this, options);
104            if (failedComponent != null) {
105                ap.mTitle = "Couldn't use " + applicationLabel + ".";
106            } else {
107                if (CardEmulationManager.CATEGORY_PAYMENT.equals(category)) {
108                    ap.mTitle = "Pay with";
109                } else {
110                    ap.mTitle = "Complete tap with";
111                }
112            }
113            ap.mView = getLayoutInflater().inflate(com.android.nfc.R.layout.cardemu_resolver, null);
114
115            mListView = (ListView) ap.mView.findViewById(com.android.nfc.R.id.resolver_list);
116            mListView.setAdapter(mListAdapter);
117            mListView.setOnItemClickListener(this);
118
119            setupAlert();
120        }
121    }
122
123    @Override
124    protected void onCreate(Bundle savedInstanceState) {
125        Intent intent = getIntent();
126        ArrayList<ComponentName> components = intent.getParcelableArrayListExtra(EXTRA_COMPONENTS);
127        String category = intent.getStringExtra(EXTRA_CATEGORY);
128        ComponentName failedComponent = intent.getParcelableExtra(EXTRA_FAILED_COMPONENT);
129        onCreate(savedInstanceState, category, components, failedComponent);
130    }
131
132    @Override
133    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
134        DisplayAppInfo info = (DisplayAppInfo) mListAdapter.getItem(position);
135        mCardEmuManager.setDefaultForNextTap(info.component);
136        Intent dialogIntent = new Intent(this, TapAgainDialog.class);
137        dialogIntent.putExtra(TapAgainDialog.EXTRA_CATEGORY, mCategory);
138        dialogIntent.putExtra(TapAgainDialog.EXTRA_COMPONENT, info.component);
139        startActivity(dialogIntent);
140        finish();
141    }
142
143    final class DisplayAppInfo {
144        ComponentName component;
145        CharSequence displayLabel;
146        Drawable displayIcon;
147
148        public DisplayAppInfo(ComponentName component, CharSequence label, Drawable icon) {
149            this.component = component;
150            displayIcon = icon;
151            displayLabel = label;
152        }
153    }
154
155    final class ListAdapter extends BaseAdapter {
156        private final LayoutInflater mInflater;
157        private List<DisplayAppInfo> mList;
158
159        public ListAdapter(Context context, ArrayList<ComponentName> components) {
160            mInflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
161            // For each component, get the corresponding app name and icon
162            PackageManager pm = getPackageManager();
163            mList = new ArrayList<DisplayAppInfo>();
164
165            for (ComponentName component : components) {
166                try {
167                    ApplicationInfo appInfo = pm.getApplicationInfo(component.getPackageName(), 0);
168                    CharSequence label = appInfo.loadLabel(pm);
169                    Drawable icon = appInfo.loadIcon(pm);
170                    DisplayAppInfo info = new DisplayAppInfo(component, label, icon);
171                    mList.add(info);
172                } catch (NameNotFoundException e) {
173                    Log.e(TAG, "Could not load ApplicationInfo for " + component);
174                }
175            }
176        }
177
178        @Override
179        public int getCount() {
180            return mList.size();
181        }
182
183        @Override
184        public Object getItem(int position) {
185            return mList.get(position);
186        }
187
188        @Override
189        public long getItemId(int position) {
190            return position;
191        }
192
193        @Override
194        public View getView(int position, View convertView, ViewGroup parent) {
195            View view;
196            if (convertView == null) {
197                view = mInflater.inflate(
198                        com.android.nfc.R.layout.cardemu_item, parent, false);
199                final ViewHolder holder = new ViewHolder(view);
200                view.setTag(holder);
201
202                ViewGroup.LayoutParams lp = holder.icon.getLayoutParams();
203                lp.width = lp.height = mIconSize;
204            } else {
205                view = convertView;
206            }
207
208            final ViewHolder holder = (ViewHolder) view.getTag();
209            DisplayAppInfo appInfo = mList.get(position);
210            holder.text.setText(appInfo.displayLabel);
211            holder.icon.setImageDrawable(appInfo.displayIcon);
212            return view;
213        }
214    }
215
216    static class ViewHolder {
217        public TextView text;
218        public ImageView icon;
219
220        public ViewHolder(View view) {
221            text = (TextView) view.findViewById(com.android.nfc.R.id.applabel);
222            icon = (ImageView) view.findViewById(com.android.nfc.R.id.appicon);
223        }
224    }
225}