1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
|
/*
* Copyright (C) 2013 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.settings;
import android.app.Activity;
import android.app.AlertDialog.Builder;
import android.content.Context;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;
import android.graphics.drawable.Drawable;
import android.os.Parcel;
import android.os.Parcelable;
import android.preference.ListPreference;
import android.util.AttributeSet;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.ListAdapter;
import android.widget.TextView;
import java.util.ArrayList;
import java.util.List;
/**
* Extends ListPreference to allow us to show the icons for a given list of applications. We do this
* because the names of applications are very similar and the user may not be able to determine what
* app they are selecting without an icon.
*/
public class AppListPreference extends ListPreference {
public static final String ITEM_NONE_VALUE = "";
private Drawable[] mEntryDrawables;
private boolean mShowItemNone = false;
public class AppArrayAdapter extends ArrayAdapter<CharSequence> {
private Drawable[] mImageDrawables = null;
private int mSelectedIndex = 0;
public AppArrayAdapter(Context context, int textViewResourceId,
CharSequence[] objects, Drawable[] imageDrawables, int selectedIndex) {
super(context, textViewResourceId, objects);
mSelectedIndex = selectedIndex;
mImageDrawables = imageDrawables;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
LayoutInflater inflater = ((Activity)getContext()).getLayoutInflater();
View view = inflater.inflate(R.layout.app_preference_item, parent, false);
TextView textView = (TextView) view.findViewById(R.id.app_label);
textView.setText(getItem(position));
if (position == mSelectedIndex) {
view.findViewById(R.id.default_label).setVisibility(View.VISIBLE);
}
ImageView imageView = (ImageView)view.findViewById(R.id.app_image);
imageView.setImageDrawable(mImageDrawables[position]);
return view;
}
}
public AppListPreference(Context context, AttributeSet attrs,
int defStyleAttr, int defStyleRes) {
super(context, attrs, defStyleAttr, defStyleRes);
}
public AppListPreference(Context context, AttributeSet attrs) {
super(context, attrs);
}
public void setShowItemNone(boolean showItemNone) {
mShowItemNone = showItemNone;
}
public void setPackageNames(CharSequence[] packageNames, CharSequence defaultPackageName) {
// Look up all package names in PackageManager. Skip ones we can't find.
PackageManager pm = getContext().getPackageManager();
final int entryCount = packageNames.length + (mShowItemNone ? 1 : 0);
List<CharSequence> applicationNames = new ArrayList<>(entryCount);
List<CharSequence> validatedPackageNames = new ArrayList<>(entryCount);
List<Drawable> entryDrawables = new ArrayList<>(entryCount);
int selectedIndex = -1;
for (int i = 0; i < packageNames.length; i++) {
try {
ApplicationInfo appInfo = pm.getApplicationInfo(packageNames[i].toString(), 0);
applicationNames.add(appInfo.loadLabel(pm));
validatedPackageNames.add(appInfo.packageName);
entryDrawables.add(appInfo.loadIcon(pm));
if (defaultPackageName != null &&
appInfo.packageName.contentEquals(defaultPackageName)) {
selectedIndex = i;
}
} catch (NameNotFoundException e) {
// Skip unknown packages.
}
}
if (mShowItemNone) {
applicationNames.add(
getContext().getResources().getText(R.string.app_list_preference_none));
validatedPackageNames.add(ITEM_NONE_VALUE);
entryDrawables.add(getContext().getDrawable(R.drawable.ic_remove_circle));
}
setEntries(applicationNames.toArray(new CharSequence[applicationNames.size()]));
setEntryValues(
validatedPackageNames.toArray(new CharSequence[validatedPackageNames.size()]));
mEntryDrawables = entryDrawables.toArray(new Drawable[entryDrawables.size()]);
if (selectedIndex != -1) {
setValueIndex(selectedIndex);
} else {
setValue(null);
}
}
protected ListAdapter createListAdapter() {
final String selectedValue = getValue();
final boolean selectedNone = selectedValue == null ||
(mShowItemNone && selectedValue.contentEquals(ITEM_NONE_VALUE));
int selectedIndex = selectedNone ? -1 : findIndexOfValue(selectedValue);
return new AppArrayAdapter(getContext(),
R.layout.app_preference_item, getEntries(), mEntryDrawables, selectedIndex);
}
@Override
protected void onPrepareDialogBuilder(Builder builder) {
builder.setAdapter(createListAdapter(), this);
super.onPrepareDialogBuilder(builder);
}
@Override
protected Parcelable onSaveInstanceState() {
Parcelable superState = super.onSaveInstanceState();
return new SavedState(getEntryValues(), getValue(), mShowItemNone, superState);
}
@Override
protected void onRestoreInstanceState(Parcelable state) {
if (state instanceof SavedState) {
SavedState savedState = (SavedState) state;
mShowItemNone = savedState.showItemNone;
setPackageNames(savedState.entryValues, savedState.value);
super.onRestoreInstanceState(savedState.superState);
} else {
super.onRestoreInstanceState(state);
}
}
private static class SavedState implements Parcelable {
public final CharSequence[] entryValues;
public final CharSequence value;
public final boolean showItemNone;
public final Parcelable superState;
public SavedState(CharSequence[] entryValues, CharSequence value, boolean showItemNone,
Parcelable superState) {
this.entryValues = entryValues;
this.value = value;
this.showItemNone = showItemNone;
this.superState = superState;
}
@Override
public int describeContents() {
return 0;
}
@Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeCharSequenceArray(entryValues);
dest.writeCharSequence(value);
dest.writeInt(showItemNone ? 1 : 0);
dest.writeParcelable(superState, flags);
}
public static Creator<SavedState> CREATOR = new Creator<SavedState>() {
@Override
public SavedState createFromParcel(Parcel source) {
CharSequence[] entryValues = source.readCharSequenceArray();
CharSequence value = source.readCharSequence();
boolean showItemNone = source.readInt() != 0;
Parcelable superState = source.readParcelable(getClass().getClassLoader());
return new SavedState(entryValues, value, showItemNone, superState);
}
@Override
public SavedState[] newArray(int size) {
return new SavedState[size];
}
};
}
}
|
