Android时间时区设置和获取

判断系统是否自动获取时区

public static boolean isTimeZoneAuto(Context mContext) {
try {
return android.provider.Settings.Global.getInt(mContext.getContentResolver(),
android.provider.Settings.Global.AUTO_TIME_ZONE) > 0;
} catch (Settings.SettingNotFoundException e) {
e.printStackTrace();
return false;
}
}

设置自动获取时区

public static void setAutoTimeZone(Context mContext, int checked) {
android.provider.Settings.Global.putInt(mContext.getContentResolver(),
android.provider.Settings.Global.AUTO_TIME_ZONE, checked);
}

获取系统默认时区

public static String getTimeZone() {
return TimeZone.getDefault().getDisplayName(false, TimeZone.SHORT);
}

设置系统默认时区

// 需要添加权限<uses-permission android:name="android.permission.SET_TIME_ZONE" />
public static void setChinaTimeZone(Context context) {
/* TimeZone.getTimeZone("GMT+8");
TimeZone.setDefault(TimeZone.getTimeZone("GMT+8"));*/
AlarmManager mAlarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
mAlarmManager.setTimeZone("Asia/Shanghai");// Asia/Taipei//GMT+08:00
}

判断系统是否自动获取日期和时间

try {
return android.provider.Settings.Global.getInt(mContext.getContentResolver(),
android.provider.Settings.Global.AUTO_TIME) > 0;
} catch (Settings.SettingNotFoundException e) {
e.printStackTrace();
return false;
}
}

设置系统自动获取日期和时间

public static void setAutoDateTime(Context mContext, int checked) {
android.provider.Settings.Global.putInt(mContext.getContentResolver(),
android.provider.Settings.Global.AUTO_TIME, checked);
}

获取系统当前时间

public static String currentTime() {
long currentTime = System.currentTimeMillis();
Date date = new Date(currentTime);
SimpleDateFormat formatter = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");
return formatter.format(date);
}

设置系统当前时间

// 需要系统权限
public static boolean setSytemTime(long value){
long settingTime = value;
if (value/1000 < Integer.MAX_VALUE){
SystemClock.setCurrentTimeMillis(settingTime);
}
}

判断系统是否是24h格式(12h同理）

public static boolean is24Hour(Context mContext) {
ContentResolver cv = mContext.getContentResolver();
String strTimeFormat = android.provider.Settings.System.getString(cv,
android.provider.Settings.System.TIME_12_24);
if (strTimeFormat != null && strTimeFormat.equals("24")) {
return true;
}
return false;
}

设置系统为24h格式（12h同理）

public static void set24Hour(Context mContext) {
ContentResolver cv = mContext.getContentResolver();
android.provider.Settings.System.putString(cv, Settings.System.TIME_12_24, "24");
}