120 lines
4.7 KiB
Java
120 lines
4.7 KiB
Java
/*
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* Copyright (C) 2013 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.settings;
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import android.app.Activity;
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import android.app.AlertDialog.Builder;
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import android.content.Context;
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import android.content.pm.ApplicationInfo;
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import android.content.pm.PackageManager;
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import android.content.pm.PackageManager.NameNotFoundException;
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import android.graphics.drawable.Drawable;
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import android.preference.ListPreference;
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import android.util.AttributeSet;
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import android.view.LayoutInflater;
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import android.view.View;
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import android.view.ViewGroup;
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import android.widget.ArrayAdapter;
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import android.widget.CheckedTextView;
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import android.widget.ImageView;
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import android.widget.ListAdapter;
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/**
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* Extends ListPreference to allow us to show the icons for a given list of applications. We do this
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* because the names of applications are very similar and the user may not be able to determine what
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* app they are selecting without an icon.
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*/
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public class AppListPreference extends ListPreference {
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private Drawable[] mEntryDrawables;
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public class AppArrayAdapter extends ArrayAdapter<CharSequence> {
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private Drawable[] mImageDrawables = null;
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private int mSelectedIndex = 0;
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public AppArrayAdapter(Context context, int textViewResourceId,
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CharSequence[] objects, Drawable[] imageDrawables, int selectedIndex) {
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super(context, textViewResourceId, objects);
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mSelectedIndex = selectedIndex;
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mImageDrawables = imageDrawables;
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}
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@Override
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public View getView(int position, View convertView, ViewGroup parent) {
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LayoutInflater inflater = ((Activity)getContext()).getLayoutInflater();
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View view = inflater.inflate(R.layout.app_preference_item, parent, false);
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CheckedTextView checkedTextView = (CheckedTextView)view.findViewById(R.id.app_label);
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checkedTextView.setText(getItem(position));
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if (position == mSelectedIndex) {
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checkedTextView.setChecked(true);
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}
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ImageView imageView = (ImageView)view.findViewById(R.id.app_image);
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imageView.setImageDrawable(mImageDrawables[position]);
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return view;
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}
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}
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public AppListPreference(Context context, AttributeSet attrs) {
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super(context, attrs);
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}
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public void setPackageNames(String[] packageNames, String defaultPackageName) {
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// Look up all package names in PackageManager. Skip ones we can't find.
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int foundPackages = 0;
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PackageManager pm = getContext().getPackageManager();
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ApplicationInfo[] appInfos = new ApplicationInfo[packageNames.length];
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for (int i = 0; i < packageNames.length; i++) {
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try {
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appInfos[i] = pm.getApplicationInfo(packageNames[i], 0);
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foundPackages++;
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} catch (NameNotFoundException e) {
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// Leave appInfos[i] uninitialized; it will be skipped in the list.
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}
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}
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// Show the label and icon for each application package.
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CharSequence[] applicationNames = new CharSequence[foundPackages];
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mEntryDrawables = new Drawable[foundPackages];
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int index = 0;
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int selectedIndex = -1;
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for (ApplicationInfo appInfo : appInfos) {
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if (appInfo != null) {
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applicationNames[index] = appInfo.loadLabel(pm);
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mEntryDrawables[index] = appInfo.loadIcon(pm);
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if (defaultPackageName != null &&
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appInfo.packageName.contentEquals(defaultPackageName)) {
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selectedIndex = index;
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}
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index++;
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}
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}
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setEntries(applicationNames);
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setEntryValues(packageNames);
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if (selectedIndex != -1) {
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setValueIndex(selectedIndex);
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}
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}
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@Override
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protected void onPrepareDialogBuilder(Builder builder) {
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int selectedIndex = findIndexOfValue(getValue());
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ListAdapter adapter = new AppArrayAdapter(getContext(),
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R.layout.app_preference_item, getEntries(), mEntryDrawables, selectedIndex);
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builder.setAdapter(adapter, this);
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super.onPrepareDialogBuilder(builder);
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}
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}
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