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/*
* 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.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.CheckedTextView;
import android.widget.ImageView;
import android.widget.ListAdapter;
/**
* 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 {
private Drawable[] mEntryDrawables;
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);
CheckedTextView checkedTextView = (CheckedTextView)view.findViewById(R.id.app_label);
checkedTextView.setText(getItem(position));
if (position == mSelectedIndex) {
checkedTextView.setChecked(true);
}
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 setPackageNames(String[] packageNames, String defaultPackageName) {
// Look up all package names in PackageManager. Skip ones we can't find.
int foundPackages = 0;
PackageManager pm = getContext().getPackageManager();
ApplicationInfo[] appInfos = new ApplicationInfo[packageNames.length];
for (int i = 0; i < packageNames.length; i++) {
try {
appInfos[i] = pm.getApplicationInfo(packageNames[i], 0);
foundPackages++;
} catch (NameNotFoundException e) {
// Leave appInfos[i] uninitialized; it will be skipped in the list.
}
}
// Show the label and icon for each application package.
CharSequence[] applicationNames = new CharSequence[foundPackages];
mEntryDrawables = new Drawable[foundPackages];
int index = 0;
int selectedIndex = -1;
for (ApplicationInfo appInfo : appInfos) {
if (appInfo != null) {
applicationNames[index] = appInfo.loadLabel(pm);
mEntryDrawables[index] = appInfo.loadIcon(pm);
if (defaultPackageName != null &&
appInfo.packageName.contentEquals(defaultPackageName)) {
selectedIndex = index;
}
index++;
}
}
setEntries(applicationNames);
setEntryValues(packageNames);
if (selectedIndex != -1) {
setValueIndex(selectedIndex);
} else {
setValue(null);
}
}
@Override
protected void onPrepareDialogBuilder(Builder builder) {
int selectedIndex = findIndexOfValue(getValue());
ListAdapter adapter = new AppArrayAdapter(getContext(),
R.layout.app_preference_item, getEntries(), mEntryDrawables, selectedIndex);
builder.setAdapter(adapter, this);
super.onPrepareDialogBuilder(builder);
}
}
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