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author | Jeff Davidson <jpd@google.com> | 2014-03-25 12:21:30 -0700 |
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committer | Jeff Davidson <jpd@google.com> | 2014-04-14 19:24:15 -0700 |
commit | b9558d91dfcae4cd98f2e25dd070dfa8c926d524 (patch) | |
tree | 3e27d237c79ea825c3794016b920121f178596bd /src/com/android/settings/AppListPreference.java | |
parent | 210bb8694aa5ad14b2b5bd52ab77a7960b4b5712 (diff) | |
download | packages_apps_Settings-b9558d91dfcae4cd98f2e25dd070dfa8c926d524.zip packages_apps_Settings-b9558d91dfcae4cd98f2e25dd070dfa8c926d524.tar.gz packages_apps_Settings-b9558d91dfcae4cd98f2e25dd070dfa8c926d524.tar.bz2 |
Refactor SmsListPreference into AppListPreference.
This generalizes the pattern of needing to offer a selection among a
list of candidate applications.
Also move some reusable logic around querying PackageManager for icons
into AppListPreference, and remove some unnecessary update logic: the
preference will update itself when onPreferenceChange returns true,
and we can set the summary to '%s' to automatically use the entry as
the summary without having to reset it each time.
Change-Id: I007b9ed58359302f93b367a4b86354e93613bf3e
Diffstat (limited to 'src/com/android/settings/AppListPreference.java')
-rw-r--r-- | src/com/android/settings/AppListPreference.java | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/src/com/android/settings/AppListPreference.java b/src/com/android/settings/AppListPreference.java new file mode 100644 index 0000000..919720f --- /dev/null +++ b/src/com/android/settings/AppListPreference.java @@ -0,0 +1,118 @@ +/* + * 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) { + 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 (appInfo.packageName.contentEquals(defaultPackageName)) { + selectedIndex = index; + } + index++; + } + } + setEntries(applicationNames); + setEntryValues(packageNames); + if (selectedIndex != -1) { + setValueIndex(selectedIndex); + } + } + + @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); + } +} |