abc95ee822
1. The code was not checking whether the settings activity exists before passing in to the SettingCheckboxClass. bug:5038386 Change-Id: Iba4f5e2e5f6f3ed9c0fed5a5103d2e9a34399d97
93 lines
3.4 KiB
Java
93 lines
3.4 KiB
Java
/*
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* Copyright (C) 2011 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.content.Context;
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import android.content.Intent;
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import android.preference.CheckBoxPreference;
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import android.util.TypedValue;
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import android.view.View;
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import android.view.View.OnClickListener;
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import android.widget.CheckBox;
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import android.widget.ImageView;
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/**
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* CheckBox preference that optionally shows an icon for launching a settings
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* {@link android.app.Activity}. The settings activity, if intent for launching
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* it was provided, can be stared only if the CheckBox in is checked.
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*/
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public class SettingsCheckBoxPreference extends CheckBoxPreference {
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// Integer.MIN_VALUE means not initalized
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private static int sDimAlpha = Integer.MIN_VALUE;
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private final Intent mSettingsIntent;
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/**
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* Creates a new instance. The constructor is checking whether the
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* settings intent is resolved to an activity and acts accordingly.
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*
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* @param context Context for accessing resources.
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* @param intent Intent to use as settings for the item represented by
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* this preference. Pass <code>null</code> if there is no associated
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* settings activity.
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*/
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public SettingsCheckBoxPreference(Context context, Intent intent) {
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super(context);
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if (sDimAlpha == Integer.MIN_VALUE) {
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TypedValue outValue = new TypedValue();
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context.getTheme().resolveAttribute(android.R.attr.disabledAlpha, outValue, true);
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sDimAlpha = (int) (outValue.getFloat() * 255);
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}
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if (intent != null
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&& !context.getPackageManager().queryIntentActivities(intent, 0).isEmpty()) {
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mSettingsIntent = intent;
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} else {
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mSettingsIntent = null;
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}
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setWidgetLayoutResource(R.layout.preference_settings_checkbox_widget);
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}
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@Override
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protected void onBindView(View view) {
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super.onBindView(view);
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ImageView settingsButton = (ImageView) view.findViewById(R.id.settings_button);
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if (mSettingsIntent != null) {
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CheckBox checkbox = (CheckBox) view.findViewById(com.android.internal.R.id.checkbox);
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if (checkbox.isChecked()) {
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settingsButton.setOnClickListener(new OnClickListener() {
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public void onClick(View view) {
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getContext().startActivity(mSettingsIntent);
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}
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});
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}
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settingsButton.setVisibility(View.VISIBLE);
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if (checkbox.isChecked() && isEnabled()) {
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settingsButton.setAlpha(255);
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} else {
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settingsButton.setAlpha(sDimAlpha);
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}
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} else {
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settingsButton.setVisibility(View.GONE);
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view.findViewById(R.id.divider).setVisibility(View.GONE);
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}
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}
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}
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