Update NotesPreferenceActivity.java

main
Sunique_L 2 years ago
parent 3465d21cc7
commit c5c75ac2ae

@ -48,228 +48,334 @@ import net.micode.notes.data.Notes.NoteColumns;
import net.micode.notes.gtask.remote.GTaskSyncService;
public class NotesPreferenceActivity extends PreferenceActivity {
public static final String PREFERENCE_NAME = "notes_preferences";
public static final String PREFERENCE_SYNC_ACCOUNT_NAME = "pref_key_account_name";
public static final String PREFERENCE_LAST_SYNC_TIME = "pref_last_sync_time";
public static final String PREFERENCE_SET_BG_COLOR_KEY = "pref_key_bg_random_appear";
private static final String PREFERENCE_SYNC_ACCOUNT_KEY = "pref_sync_account_key";
private static final String AUTHORITIES_FILTER_KEY = "authorities";
private PreferenceCategory mAccountCategory;
private GTaskReceiver mReceiver;
private Account[] mOriAccounts;
private boolean mHasAddedAccount;
@Override
protected void onCreate(Bundle icicle) {
super.onCreate(icicle);
/* using the app icon for navigation */
getActionBar().setDisplayHomeAsUpEnabled(true);
addPreferencesFromResource(R.xml.preferences);
mAccountCategory = (PreferenceCategory) findPreference(PREFERENCE_SYNC_ACCOUNT_KEY);
mReceiver = new GTaskReceiver();
IntentFilter filter = new IntentFilter();
filter.addAction(GTaskSyncService.GTASK_SERVICE_BROADCAST_NAME);
registerReceiver(mReceiver, filter);
mOriAccounts = null;
View header = LayoutInflater.from(this).inflate(R.layout.settings_header, null);
getListView().addHeaderView(header, null, true);
}
@Override
protected void onResume() {
super.onResume();
// need to set sync account automatically if user has added a new
// account
if (mHasAddedAccount) {
Account[] accounts = getGoogleAccounts();
if (mOriAccounts != null && accounts.length > mOriAccounts.length) {
for (Account accountNew : accounts) {
boolean found = false;
for (Account accountOld : mOriAccounts) {
if (TextUtils.equals(accountOld.name, accountNew.name)) {
found = true;
break;
}
}
if (!found) {
setSyncAccount(accountNew.name);
break;
}
}
}
}
refreshUI();
}
@Override
protected void onDestroy() {
if (mReceiver != null) {
unregisterReceiver(mReceiver);
}
super.onDestroy();
}
private void loadAccountPreference() {
mAccountCategory.removeAll();
Preference accountPref = new Preference(this);
final String defaultAccount = getSyncAccountName(this);
accountPref.setTitle(getString(R.string.preferences_account_title));
accountPref.setSummary(getString(R.string.preferences_account_summary));
accountPref.setOnPreferenceClickListener(new OnPreferenceClickListener() {
public boolean onPreferenceClick(Preference preference) {
if (!GTaskSyncService.isSyncing()) {
if (TextUtils.isEmpty(defaultAccount)) {
// the first time to set account
showSelectAccountAlertDialog();
} else {
// if the account has already been set, we need to promp
// user about the risk
showChangeAccountConfirmAlertDialog();
}
} else {
Toast.makeText(NotesPreferenceActivity.this,
R.string.preferences_toast_cannot_change_account, Toast.LENGTH_SHORT)
.show();
}
return true;
}
});
mAccountCategory.addPreference(accountPref);
}
private void loadSyncButton() {
Button syncButton = (Button) findViewById(R.id.preference_sync_button);
TextView lastSyncTimeView = (TextView) findViewById(R.id.prefenerece_sync_status_textview);
// set button state
if (GTaskSyncService.isSyncing()) {
syncButton.setText(getString(R.string.preferences_button_sync_cancel));
syncButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
GTaskSyncService.cancelSync(NotesPreferenceActivity.this);
}
});
} else {
syncButton.setText(getString(R.string.preferences_button_sync_immediately));
syncButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
GTaskSyncService.startSync(NotesPreferenceActivity.this);
}
});
}
syncButton.setEnabled(!TextUtils.isEmpty(getSyncAccountName(this)));
// set last sync time
if (GTaskSyncService.isSyncing()) {
lastSyncTimeView.setText(GTaskSyncService.getProgressString());
lastSyncTimeView.setVisibility(View.VISIBLE);
} else {
long lastSyncTime = getLastSyncTime(this);
if (lastSyncTime != 0) {
lastSyncTimeView.setText(getString(R.string.preferences_last_sync_time,
DateFormat.format(getString(R.string.preferences_last_sync_time_format),
lastSyncTime)));
lastSyncTimeView.setVisibility(View.VISIBLE);
} else {
lastSyncTimeView.setVisibility(View.GONE);
}
}
}
private void refreshUI() {
loadAccountPreference();
loadSyncButton();
}
//声明一个名为NotesPreferenceActivity的类该类继承自PreferenceActivity
public class NotesPreferenceActivity extends PreferenceActivity {
// 声明一个静态常量,用于保存偏好设置的全局名称
public static final String PREFERENCE_NAME = "notes_preferences";
// 声明一个静态常量,用于保存同步账户名称的键
public static final String PREFERENCE_SYNC_ACCOUNT_NAME = "pref_key_account_name";
// 声明一个静态常量,用于保存最后一次同步时间的键
public static final String PREFERENCE_LAST_SYNC_TIME = "pref_last_sync_time";
// 声明一个静态常量,用于设置背景颜色的键
public static final String PREFERENCE_SET_BG_COLOR_KEY = "pref_key_bg_random_appear";
// 声明一个静态常量,用于保存同步账户的键
private static final String PREFERENCE_SYNC_ACCOUNT_KEY = "pref_sync_account_key";
// 声明一个PreferenceCategory类型的成员变量mAccountCategory用于保存账户偏好设置的类别
private PreferenceCategory mAccountCategory;
// 声明一个GTaskReceiver类型的成员变量mReceiver可能用于接收和处理任务相关的广播
private GTaskReceiver mReceiver;
// 声明一个Account类型的数组mOriAccounts用于保存原始账户信息
private Account[] mOriAccounts;
// 声明一个布尔类型的成员变量mHasAddedAccount用于跟踪是否已添加账户
private boolean mHasAddedAccount;
// 重写PreferenceActivity的onCreate方法该方法在活动创建时被调用
@Override
protected void onCreate(Bundle icicle) {
// 调用父类的onCreate方法并设置导航图标为应用图标允许用户通过图标进行导航
super.onCreate(icicle);
getActionBar().setDisplayHomeAsUpEnabled(true);
// 从资源文件中加载偏好设置
addPreferencesFromResource(R.xml.preferences);
// 获取账户偏好设置的类别
mAccountCategory = (PreferenceCategory) findPreference(PREFERENCE_SYNC_ACCOUNT_KEY);
// 创建一个GTaskReceiver对象
mReceiver = new GTaskReceiver();
// 创建一个IntentFilter对象并添加一个动作过滤器该动作过滤器用于过滤来自GTaskSyncService的广播
IntentFilter filter = new IntentFilter();
filter.addAction(GTaskSyncService.GTASK_SERVICE_BROADCAST_NAME);
// 注册广播接收器以接收与GTaskSyncService相关的广播
registerReceiver(mReceiver, filter);
// 将mOriAccounts设置为null表示尚未初始化该变量在后续代码中可能会进行初始化
mOriAccounts = null;
// 使用LayoutInflater从当前context创建一个视图并从布局文件R.layout.settings_header中获取头部视图可能包含一些标题或标头信息
View header = LayoutInflater.from(this).inflate(R.layout.settings_header, null);
// 将头部视图添加到列表视图中允许在偏好设置列表中显示一些额外的信息或标题等。参数为null是因为我们不需要在此处创建任何新的视图层次结构。第三个参数为true表示在列表中显示头部视图。如果为false则头部视图不会显示在列表中。
getListView().addHeaderView(header, null, true);
} // 结束onCreate方法定义
} // 结束NotesPreferenceActivity类定义
@Override
protected void onResume() {
super.onResume();
// 当用户添加新账户时,需要自动设置同步账户
if (mHasAddedAccount) {
// 获取所有Google账户
Account[] accounts = getGoogleAccounts();
// 如果原始账户列表和新获取的账户列表长度不一致,说明有新账户添加
if (mOriAccounts != null && accounts.length > mOriAccounts.length) {
for (Account accountNew : accounts) {
boolean found = false;
for (Account accountOld : mOriAccounts) {
// 检查新账户是否在原始列表中
if (TextUtils.equals(accountOld.name, accountNew.name)) {
found = true;
break;
}
}
// 如果新账户不在原始列表中,则设置该账户为同步账户
if (!found) {
setSyncAccount(accountNew.name);
break;
}
}
}
}
// 刷新UI可能是为了显示同步账户的更改或其他相关UI更新
refreshUI();
}
@Override
protected void onDestroy() {
if (mReceiver != null) {
// 取消注册广播接收器,以避免内存泄漏
unregisterReceiver(mReceiver);
}
super.onDestroy();
}
private void showSelectAccountAlertDialog() {
AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this);
//加载账户偏好
private void loadAccountPreference() {
// 从账户分类中移除所有偏好
mAccountCategory.removeAll();
// 创建一个新的偏好,类型为账户
Preference accountPref = new Preference(this);
// 获取默认的账户名称
final String defaultAccount = getSyncAccountName(this);
// 设置账户偏好的标题
accountPref.setTitle(getString(R.string.preferences_account_title));
// 设置账户偏好的摘要信息
accountPref.setSummary(getString(R.string.preferences_account_summary));
// 设置账户偏好的点击监听器
accountPref.setOnPreferenceClickListener(new OnPreferenceClickListener() {
public boolean onPreferenceClick(Preference preference) {
// 如果不在同步状态,则执行以下操作
if (!GTaskSyncService.isSyncing()) {
// 如果默认账户为空,表示这是第一次设置账户
if (TextUtils.isEmpty(defaultAccount)) {
// 显示选择账户的对话框
showSelectAccountAlertDialog();
} else {
// 如果账户已经被设置,需要提示用户更改账户的风险
showChangeAccountConfirmAlertDialog();
}
} else {
// 如果正在同步,则显示一个提示信息,表示不能更改账户
Toast.makeText(NotesPreferenceActivity.this,
R.string.preferences_toast_cannot_change_account, Toast.LENGTH_SHORT)
.show();
}
// 返回true表示监听器已经处理了点击事件
return true;
}
});
// 将账户偏好添加到账户分类中
mAccountCategory.addPreference(accountPref);
}
View titleView = LayoutInflater.from(this).inflate(R.layout.account_dialog_title, null);
TextView titleTextView = (TextView) titleView.findViewById(R.id.account_dialog_title);
titleTextView.setText(getString(R.string.preferences_dialog_select_account_title));
TextView subtitleTextView = (TextView) titleView.findViewById(R.id.account_dialog_subtitle);
subtitleTextView.setText(getString(R.string.preferences_dialog_select_account_tips));
dialogBuilder.setCustomTitle(titleView);
dialogBuilder.setPositiveButton(null, null);
//加载同步按钮
private void loadSyncButton() {
// 从布局中获取同步按钮
Button syncButton = (Button) findViewById(R.id.preference_sync_button);
// 从布局中获取最后一次同步时间文本视图
TextView lastSyncTimeView = (TextView) findViewById(R.id.prefenerece_sync_status_textview);
// 设置按钮状态
// 如果正在同步
if (GTaskSyncService.isSyncing()) {
// 设置按钮文本为"取消同步"
syncButton.setText(getString(R.string.preferences_button_sync_cancel));
// 设置按钮点击监听器,点击时取消同步
syncButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
GTaskSyncService.cancelSync(NotesPreferenceActivity.this);
}
});
// 如果未同步
} else {
// 设置按钮文本为"立即同步"
syncButton.setText(getString(R.string.preferences_button_sync_immediately));
// 设置按钮点击监听器,点击时开始同步
syncButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
GTaskSyncService.startSync(NotesPreferenceActivity.this);
}
});
}
// 设置按钮是否可用,如果同步账户名不为空则启用,否则禁用
syncButton.setEnabled(!TextUtils.isEmpty(getSyncAccountName(this)));
// 设置最后一次同步时间
// 如果正在同步
if (GTaskSyncService.isSyncing()) {
// 设置最后一次同步时间为进度字符串
lastSyncTimeView.setText(GTaskSyncService.getProgressString());
// 显示最后一次同步时间文本视图
lastSyncTimeView.setVisibility(View.VISIBLE);
// 如果未同步
} else {
// 获取最后一次同步时间
long lastSyncTime = getLastSyncTime(this);
// 如果最后一次同步时间不为0
if (lastSyncTime != 0) {
// 设置最后一次同步时间为格式化的时间字符串,并显示文本视图
lastSyncTimeView.setText(getString(R.string.preferences_last_sync_time,
DateFormat.format(getString(R.string.preferences_last_sync_time_format),
lastSyncTime)));
lastSyncTimeView.setVisibility(View.VISIBLE);
// 如果没有同步过
} else {
// 隐藏最后一次同步时间文本视图
lastSyncTimeView.setVisibility(View.GONE);
}
}
}
Account[] accounts = getGoogleAccounts();
String defAccount = getSyncAccountName(this);
mOriAccounts = accounts;
mHasAddedAccount = false;
//刷新UI可能包括加载账户偏好设置和同步按钮的状态等
private void refreshUI() {
// 加载账户偏好设置
loadAccountPreference();
// 加载同步按钮
loadSyncButton();
}
//显示选择账户的对话框提示
private void showSelectAccountAlertDialog() {
// 创建对话框构建器
AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this);
// 从布局中加载 account_dialog_title 视图,并获取其中的 TextView 实例
View titleView = LayoutInflater.from(this).inflate(R.layout.account_dialog_title, null);
// 获取标题文本框实例
TextView titleTextView = (TextView) titleView.findViewById(R.id.account_dialog_title);
// 设置标题文本
titleTextView.setText(getString(R.string.preferences_dialog_select_account_title));
// 获取副标题文本框实例
TextView subtitleTextView = (TextView) titleView.findViewById(R.id.account_dialog_subtitle);
// 设置副标题文本
subtitleTextView.setText(getString(R.string.preferences_dialog_select_account_tips));
// 设置自定义标题视图
dialogBuilder.setCustomTitle(titleView);
// 不设置确认按钮的文本和点击监听器
dialogBuilder.setPositiveButton(null, null);
// 获取所有谷歌账户
Account[] accounts = getGoogleAccounts();
// 获取默认同步账户名称
String defAccount = getSyncAccountName(this);
// 保存原始账户数组
mOriAccounts = accounts;
// 标记是否已添加账户,默认为 false
mHasAddedAccount = false;
// 如果存在谷歌账户
if (accounts.length > 0) {
// 创建字符序列数组,用于存放账户名称
CharSequence[] items = new CharSequence[accounts.length];
// 用于映射原始账户数组和字符序列数组的对应关系
final CharSequence[] itemMapping = items;
int checkedItem = -1; // 默认未选中任何账户,初始值为 -1
int index = 0;
// 遍历所有账户
for (Account account : accounts) {
// 如果账户名称与默认同步账户名称相同
if (TextUtils.equals(account.name, defAccount)) {
checkedItem = index; // 将该账户设置为默认选中状态checkedItem 值为索引值
}
items[index++] = account.name; // 将账户名称存入字符序列数组中
}
// 设置单选列表项,并指定默认选中项和点击监听器
dialogBuilder.setSingleChoiceItems(items, checkedItem,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// 设置同步账户,参数为选中的账户名称
setSyncAccount(itemMapping[which].toString());
// 关闭对话框
dialog.dismiss();
// 刷新UI
refreshUI();
}
});
}
}
if (accounts.length > 0) {
CharSequence[] items = new CharSequence[accounts.length];
final CharSequence[] itemMapping = items;
int checkedItem = -1;
int index = 0;
for (Account account : accounts) {
if (TextUtils.equals(account.name, defAccount)) {
checkedItem = index;
}
items[index++] = account.name;
}
dialogBuilder.setSingleChoiceItems(items, checkedItem,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
setSyncAccount(itemMapping[which].toString());
dialog.dismiss();
refreshUI();
}
});
}
View addAccountView = LayoutInflater.from(this).inflate(R.layout.add_account_text, null);
dialogBuilder.setView(addAccountView);
final AlertDialog dialog = dialogBuilder.show();
addAccountView.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
mHasAddedAccount = true;
Intent intent = new Intent("android.settings.ADD_ACCOUNT_SETTINGS");
intent.putExtra(AUTHORITIES_FILTER_KEY, new String[] {
"gmail-ls"
});
startActivityForResult(intent, -1);
dialog.dismiss();
}
});
}
private void showChangeAccountConfirmAlertDialog() {
AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this);
View titleView = LayoutInflater.from(this).inflate(R.layout.account_dialog_title, null);
TextView titleTextView = (TextView) titleView.findViewById(R.id.account_dialog_title);
titleTextView.setText(getString(R.string.preferences_dialog_change_account_title,
getSyncAccountName(this)));
TextView subtitleTextView = (TextView) titleView.findViewById(R.id.account_dialog_subtitle);
subtitleTextView.setText(getString(R.string.preferences_dialog_change_account_warn_msg));
dialogBuilder.setCustomTitle(titleView);
CharSequence[] menuItemArray = new CharSequence[] {
getString(R.string.preferences_menu_change_account),
getString(R.string.preferences_menu_remove_account),
getString(R.string.preferences_menu_cancel)
};
//加载添加账户的视图,并将其设置为对话框的内容
View addAccountView = LayoutInflater.from(this).inflate(R.layout.add_account_text, null);
dialogBuilder.setView(addAccountView);
//创建并显示对话框
final AlertDialog dialog = dialogBuilder.show();
//为添加账户的视图设置点击事件监听器
addAccountView.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// 标记已添加账户
mHasAddedAccount = true;
// 创建意图,并设置其动作为添加账户设置
Intent intent = new Intent("android.settings.ADD_ACCOUNT_SETTINGS");
// 添加过滤条件仅显示gmail-ls账户
intent.putExtra(AUTHORITIES_FILTER_KEY, new String[] {
"gmail-ls"
});
// 启动意图,并等待结果(-1
startActivityForResult(intent, -1);
// 关闭对话框
dialog.dismiss();
}
});
}
//显示更改账户的确认对话框
private void showChangeAccountConfirmAlertDialog() {
AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this);
//加载账户对话框的标题视图,并获取其中的 TextView 实例
View titleView = LayoutInflater.from(this).inflate(R.layout.account_dialog_title, null);
//获取标题 TextView 实例
TextView titleTextView = (TextView) titleView.findViewById(R.id.account_dialog_title);
//设置标题文本,包含当前同步账户的名称
titleTextView.setText(getString(R.string.preferences_dialog_change_account_title,
getSyncAccountName(this)));
//获取副标题 TextView 实例
TextView subtitleTextView = (TextView) titleView.findViewById(R.id.account_dialog_subtitle);
//设置副标题文本,为警告消息
subtitleTextView.setText(getString(R.string.preferences_dialog_change_account_warn_msg));
//设置自定义标题视图
dialogBuilder.setCustomTitle(titleView);
//创建菜单项数组,包含更改账户、移除账户和取消三个选项
CharSequence[] menuItemArray = new CharSequence[] {
getString(R.string.preferences_menu_change_account),
getString(R.string.preferences_menu_remove_account),
getString(R.string.preferences_menu_cancel)
};
dialogBuilder.setItems(menuItemArray, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
if (which == 0) {
@ -288,101 +394,161 @@ public class NotesPreferenceActivity extends PreferenceActivity {
return accountManager.getAccountsByType("com.google");
}
private void setSyncAccount(String account) {
if (!getSyncAccountName(this).equals(account)) {
SharedPreferences settings = getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE);
SharedPreferences.Editor editor = settings.edit();
if (account != null) {
editor.putString(PREFERENCE_SYNC_ACCOUNT_NAME, account);
} else {
editor.putString(PREFERENCE_SYNC_ACCOUNT_NAME, "");
}
editor.commit();
// clean up last sync time
setLastSyncTime(this, 0);
// clean up local gtask related info
new Thread(new Runnable() {
public void run() {
ContentValues values = new ContentValues();
values.put(NoteColumns.GTASK_ID, "");
values.put(NoteColumns.SYNC_ID, 0);
getContentResolver().update(Notes.CONTENT_NOTE_URI, values, null, null);
}
}).start();
Toast.makeText(NotesPreferenceActivity.this,
getString(R.string.preferences_toast_success_set_accout, account),
Toast.LENGTH_SHORT).show();
}
/**
*
*
* @param account
*/
private void setSyncAccount(String account) {
// 检查当前同步账户的名称是否与给定的账户名称不同
if (!getSyncAccountName(this).equals(account)) {
// 获取共享偏好设置
SharedPreferences settings = getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE);
// 创建一个编辑器来修改共享偏好设置
SharedPreferences.Editor editor = settings.edit();
// 如果给定的账户名称不为空,则将其保存到共享偏好设置中
if (account != null) {
editor.putString(PREFERENCE_SYNC_ACCOUNT_NAME, account);
} else {
// 否则,将同步账户名称设置为空字符串
editor.putString(PREFERENCE_SYNC_ACCOUNT_NAME, "");
}
// 提交编辑,使更改生效
editor.commit();
// 清理上次同步的时间
setLastSyncTime(this, 0);
// 在新线程中清理与本地GTask相关的信息
new Thread(new Runnable() {
public void run() {
ContentValues values = new ContentValues();
values.put(NoteColumns.GTASK_ID, ""); // 将GTask ID设置为空字符串
values.put(NoteColumns.SYNC_ID, 0); // 将同步ID设置为0
getContentResolver().update(Notes.CONTENT_NOTE_URI, values, null, null); // 更新内容URI清理与同步相关的信息
}
}).start(); // 启动新线程来执行清理操作
// 显示一个短暂的Toast消息告知用户成功设置了账户
Toast.makeText(NotesPreferenceActivity.this,
getString(R.string.preferences_toast_success_set_accout, account), // 获取并格式化Toast消息文本
Toast.LENGTH_SHORT).show(); // 显示Toast消息持续时间短暂
}
}
private void removeSyncAccount() {
SharedPreferences settings = getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE);
SharedPreferences.Editor editor = settings.edit();
if (settings.contains(PREFERENCE_SYNC_ACCOUNT_NAME)) {
editor.remove(PREFERENCE_SYNC_ACCOUNT_NAME);
}
if (settings.contains(PREFERENCE_LAST_SYNC_TIME)) {
editor.remove(PREFERENCE_LAST_SYNC_TIME);
}
editor.commit();
// clean up local gtask related info
new Thread(new Runnable() {
public void run() {
ContentValues values = new ContentValues();
values.put(NoteColumns.GTASK_ID, "");
values.put(NoteColumns.SYNC_ID, 0);
getContentResolver().update(Notes.CONTENT_NOTE_URI, values, null, null);
}
}).start();
}
public static String getSyncAccountName(Context context) {
SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME,
Context.MODE_PRIVATE);
return settings.getString(PREFERENCE_SYNC_ACCOUNT_NAME, "");
}
public static void setLastSyncTime(Context context, long time) {
SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME,
Context.MODE_PRIVATE);
SharedPreferences.Editor editor = settings.edit();
editor.putLong(PREFERENCE_LAST_SYNC_TIME, time);
editor.commit();
}
public static long getLastSyncTime(Context context) {
SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME,
Context.MODE_PRIVATE);
return settings.getLong(PREFERENCE_LAST_SYNC_TIME, 0);
/**
*
*/
private void removeSyncAccount() {
// 获取共享偏好设置
SharedPreferences settings = getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE);
// 创建一个编辑器来修改共享偏好设置
SharedPreferences.Editor editor = settings.edit();
// 如果共享偏好设置中包含同步账户名称,则移除它
if (settings.contains(PREFERENCE_SYNC_ACCOUNT_NAME)) {
editor.remove(PREFERENCE_SYNC_ACCOUNT_NAME);
}
// 如果共享偏好设置中包含上次同步的时间,则移除它
if (settings.contains(PREFERENCE_LAST_SYNC_TIME)) {
editor.remove(PREFERENCE_LAST_SYNC_TIME);
}
// 提交编辑,使更改生效
editor.commit();
// 在新线程中清理与本地GTask相关的信息
new Thread(new Runnable() {
public void run() {
ContentValues values = new ContentValues();
// 将GTask ID设置为空字符串
values.put(NoteColumns.GTASK_ID, "");
// 将同步ID设置为0
values.put(NoteColumns.SYNC_ID, 0);
// 更新内容URI清理与同步相关的信息
getContentResolver().update(Notes.CONTENT_NOTE_URI, values, null, null);
}
}).start(); // 启动新线程来执行清理操作
}
/**
*
* @param context
* @return
*/
public static String getSyncAccountName(Context context) {
// 获取共享偏好设置
SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME,
Context.MODE_PRIVATE);
// 返回同步账户名称,如果不存在则返回空字符串
return settings.getString(PREFERENCE_SYNC_ACCOUNT_NAME, "");
}
/**
*
* @param context
* @param time
*/
public static void setLastSyncTime(Context context, long time) {
// 获取共享偏好设置
SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME,
Context.MODE_PRIVATE);
// 创建一个编辑器来修改共享偏好设置
SharedPreferences.Editor editor = settings.edit();
// 保存上次同步的时间(以毫秒为单位)到共享偏好设置中
editor.putLong(PREFERENCE_LAST_SYNC_TIME, time);
// 提交编辑,使更改生效
editor.commit();
}
private class GTaskReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
refreshUI();
if (intent.getBooleanExtra(GTaskSyncService.GTASK_SERVICE_BROADCAST_IS_SYNCING, false)) {
TextView syncStatus = (TextView) findViewById(R.id.prefenerece_sync_status_textview);
syncStatus.setText(intent
.getStringExtra(GTaskSyncService.GTASK_SERVICE_BROADCAST_PROGRESS_MSG));
}
}
}
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
Intent intent = new Intent(this, NotesListActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(intent);
return true;
default:
return false;
}
}
}
// 定义一个公共静态方法名为getLastSyncTime接收一个Context对象作为参数
// 该方法用于从SharedPreferences中获取上次同步的时间以毫秒为单位如果不存在则返回0
public static long getLastSyncTime(Context context) {
// 从给定的Context对象中获取名为PREFERENCE_NAME的SharedPreferences对象同时设置其访问模式为Context.MODE_PRIVATE
SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME,
Context.MODE_PRIVATE);
// 从SharedPreferences对象中获取名为PREFERENCE_Last_SYNC_TIME的值如果不存在则返回0
return settings.getLong(PREFERENCE_Last_Sync_Time, 0);
}
// 定义一个私有的内部类GTaskReceiver它继承了BroadcastReceiver类
private class GTaskReceiver extends BroadcastReceiver {
// 覆盖BroadcastReceiver的onReceive方法接收两个参数Context对象和Intent对象
@Override
public void onReceive(Context context, Intent intent) {
// 调用refreshUI方法可能是为了更新用户界面
refreshUI();
// 从Intent对象中获取一个Boolean类型的额外数据键为GTaskSyncService.GTASK_SERVICE_BROADCAST_IS_SYNCING如果不存在则返回false
// 如果该额外数据存在并且为true说明正在进行同步操作
if (intent.getBooleanExtra(GTaskSyncService.GTASK_SERVICE_BROADCAST_IS_SYNCING, false)) {
// 从布局中获取id为R.id.prefenerece_sync_status_textview的TextView对象
TextView syncStatus = (TextView) findViewById(R.id.prefenerece_sync_status_textview);
// 将从Intent中获取的额外数据键为GTaskSyncService.GTASK_SERVICE_BROADCAST_PROGRESS_MSG设置为TextView的内容显示同步进度信息
syncStatus.setText(intent.getStringExtra(GTaskSyncService.GTASK_SERVICE_BROADCAST_PROGRESS_MSG));
}
}
}
// 定义一个公共的onOptionsItemSelected方法接收一个MenuItem对象作为参数返回一个boolean值
// 该方法用于处理菜单项的选择事件
public boolean onOptionsItemSelected(MenuItem item) {
// 根据选择的菜单项ID进行不同的处理
switch (item.getItemId()) {
// 如果选择的菜单项ID为android.R.id.home则执行以下操作
case android.R.id.home:
// 创建一个新的Intent对象目标Activity为NotesListActivity.class
Intent intent = new Intent(this, NotesListActivity.class);
// 向Intent对象添加一个标志位表示在启动新Activity之前先清除当前Activity的栈记录达到关闭当前Activity的效果
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
// 启动目标Activity
startActivity(intent);
// 返回true表示该菜单项已被处理不再向下执行
return true;
// 如果选择的菜单项ID不属于android.R.id.home则返回false表示该菜单项未被处理继续向下执行其他菜单项的处理逻辑
default:
return false;
}
}
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