android_calculator-47: Remember last used tab in vars, functions etc
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@ -11,6 +11,7 @@ import android.widget.TabHost;
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import org.jetbrains.annotations.Nullable;
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import org.solovyev.android.AndroidUtils;
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import org.solovyev.android.calculator.R;
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import org.solovyev.android.view.LastTabSaver;
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/**
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* User: serso
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@ -19,6 +20,9 @@ import org.solovyev.android.calculator.R;
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*/
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public class CalculatorAboutTabActivity extends TabActivity {
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@Nullable
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private LastTabSaver lastTabSaver;
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@Override
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public void onCreate(@Nullable Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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@ -30,7 +34,17 @@ public class CalculatorAboutTabActivity extends TabActivity {
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AndroidUtils.addTab(this, tabHost, "about", R.string.c_about, CalculatorAboutActivity.class);
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AndroidUtils.addTab(this, tabHost, "release_notes", R.string.c_release_notes, CalculatorReleaseNotesActivity.class);
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tabHost.setCurrentTab(0);
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lastTabSaver = new LastTabSaver(this, "about");
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AndroidUtils.centerAndWrapTabsFor(tabHost);
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}
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@Override
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protected void onDestroy() {
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if ( this.lastTabSaver != null ) {
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this.lastTabSaver.destroy();
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}
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super.onDestroy();
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}
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}
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@ -15,6 +15,7 @@ import org.jetbrains.annotations.NotNull;
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import org.jetbrains.annotations.Nullable;
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import org.solovyev.android.AndroidUtils;
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import org.solovyev.android.calculator.R;
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import org.solovyev.android.view.LastTabSaver;
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/**
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* User: serso
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@ -23,6 +24,9 @@ import org.solovyev.android.calculator.R;
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*/
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public class CalculatorHelpTabActivity extends TabActivity {
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@Nullable
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private LastTabSaver lastTabSaver;
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@Override
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public void onCreate(@Nullable Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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@ -35,7 +39,7 @@ public class CalculatorHelpTabActivity extends TabActivity {
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createTab(tabHost, "hints", R.string.c_hints, HelpHintsActivity.class);
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createTab(tabHost, "screens", R.string.c_screens, HelpScreensActivity.class);
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tabHost.setCurrentTab(0);
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this.lastTabSaver = new LastTabSaver(this, "faq");
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AndroidUtils.centerAndWrapTabsFor(tabHost);
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}
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@ -54,4 +58,13 @@ public class CalculatorHelpTabActivity extends TabActivity {
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tabHost.addTab(spec);
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}
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@Override
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protected void onDestroy() {
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if (this.lastTabSaver != null) {
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this.lastTabSaver.destroy();
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}
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super.onDestroy();
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}
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}
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@ -12,6 +12,7 @@ import android.widget.TabHost;
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import org.jetbrains.annotations.Nullable;
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import org.solovyev.android.AndroidUtils;
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import org.solovyev.android.calculator.R;
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import org.solovyev.android.view.LastTabSaver;
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/**
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* User: serso
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@ -20,6 +21,9 @@ import org.solovyev.android.calculator.R;
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*/
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public class CalculatorHistoryTabActivity extends TabActivity {
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@Nullable
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private LastTabSaver lastTabSaver;
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@Override
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public void onCreate(@Nullable Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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@ -31,8 +35,16 @@ public class CalculatorHistoryTabActivity extends TabActivity {
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AndroidUtils.addTab(this, tabHost, "saved_history", R.string.c_saved_history, SavedHistoryActivityTab.class);
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AndroidUtils.addTab(this, tabHost, "history", R.string.c_history, HistoryActivityTab.class);
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tabHost.setCurrentTab(0);
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this.lastTabSaver = new LastTabSaver(this, "saved_history");
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AndroidUtils.centerAndWrapTabsFor(tabHost);
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}
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@Override
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protected void onDestroy() {
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if ( this.lastTabSaver != null ) {
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this.lastTabSaver.destroy();
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}
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super.onDestroy();
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}
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}
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@ -13,6 +13,7 @@ import org.jetbrains.annotations.Nullable;
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import org.solovyev.android.AndroidUtils;
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import org.solovyev.android.calculator.R;
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import org.solovyev.android.calculator.model.AndroidFunctionsMathRegistry;
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import org.solovyev.android.view.LastTabSaver;
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/**
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* User: serso
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@ -21,6 +22,9 @@ import org.solovyev.android.calculator.model.AndroidFunctionsMathRegistry;
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*/
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public class CalculatorFunctionsTabActivity extends TabActivity {
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@Nullable
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private LastTabSaver lastTabSaver;
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@Override
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public void onCreate(@Nullable Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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@ -33,7 +37,16 @@ public class CalculatorFunctionsTabActivity extends TabActivity {
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AbstractMathEntityListActivity.createTab(this, tabHost, category.name(), category.name(), category.getCaptionId(), CalculatorFunctionsActivity.class, null);
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}
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this.lastTabSaver = new LastTabSaver(this, AndroidFunctionsMathRegistry.Category.common.name());
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AndroidUtils.centerAndWrapTabsFor(tabHost);
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}
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@Override
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protected void onDestroy() {
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if (lastTabSaver != null) {
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this.lastTabSaver.destroy();
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}
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super.onDestroy();
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}
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}
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@ -13,6 +13,7 @@ import org.jetbrains.annotations.Nullable;
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import org.solovyev.android.AndroidUtils;
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import org.solovyev.android.calculator.R;
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import org.solovyev.android.calculator.model.VarCategory;
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import org.solovyev.android.view.LastTabSaver;
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/**
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* User: serso
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@ -21,6 +22,9 @@ import org.solovyev.android.calculator.model.VarCategory;
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*/
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public class CalculatorVarsTabActivity extends TabActivity {
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@Nullable
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private LastTabSaver lastTabSaver;
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@Override
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public void onCreate(@Nullable Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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@ -37,8 +41,16 @@ public class CalculatorVarsTabActivity extends TabActivity {
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}
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}
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tabHost.setCurrentTab(0);
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this.lastTabSaver = new LastTabSaver(this, VarCategory.my.name());
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AndroidUtils.centerAndWrapTabsFor(tabHost);
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}
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@Override
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protected void onDestroy() {
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if (lastTabSaver != null) {
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lastTabSaver.destroy();
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}
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super.onDestroy();
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}
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}
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58
src/main/java/org/solovyev/android/view/LastTabSaver.java
Normal file
58
src/main/java/org/solovyev/android/view/LastTabSaver.java
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@ -0,0 +1,58 @@
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/*
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* Copyright (c) 2009-2012. Created by serso aka se.solovyev.
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* For more information, please, contact se.solovyev@gmail.com
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* or visit http://se.solovyev.org
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*/
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package org.solovyev.android.view;
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import android.app.TabActivity;
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import android.preference.PreferenceManager;
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import android.widget.TabHost;
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import org.jetbrains.annotations.NotNull;
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import org.solovyev.android.view.prefs.StringPreference;
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/**
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* User: serso
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* Date: 1/9/12
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* Time: 6:17 PM
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*/
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public class LastTabSaver implements TabHost.OnTabChangeListener {
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private static final String LAST_OPENED_TAB_P_KEY = "last_opened_tab_";
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@NotNull
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private final StringPreference<String> preference;
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@NotNull
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private final TabActivity tabActivity;
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public LastTabSaver(@NotNull TabActivity tabActivity, @NotNull String defaultTabId) {
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this.tabActivity = tabActivity;
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this.preference = StringPreference.newInstance(getPreferenceKey(), defaultTabId);
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final TabHost tabHost = tabActivity.getTabHost();
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tabHost.setCurrentTabByTag(this.getLastOpenedTabId());
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tabHost.setOnTabChangedListener(this);
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}
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public void destroy() {
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final TabHost tabHost = tabActivity.getTabHost();
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tabHost.setOnTabChangedListener(null);
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}
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@Override
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public void onTabChanged(String tabId) {
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preference.putPreference(PreferenceManager.getDefaultSharedPreferences(tabActivity), tabId);
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}
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@NotNull
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public String getLastOpenedTabId() {
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return preference.getPreference(PreferenceManager.getDefaultSharedPreferences(tabActivity));
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}
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@NotNull
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private String getPreferenceKey() {
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return LAST_OPENED_TAB_P_KEY + tabActivity.getClass().getName();
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}
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}
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