日期选择前后一周，日，年，月
之前做了一个小Demo，选择一个日期后，按前进向前一周，按后退向后一周，同理还有日，月，年的，自己在那算了好几个小时，在网上也没找到好一点的demo，今天贴出来，以后开发粘贴复制即可。
上货！！！
需要用到的三方依赖：
implementation 'com.contrarywind:Android-PickerView:4.1.9'
代码MainActivity:
public class Main2Activity extends AppCompatActivity {
private TextView tvDate1;
private TextView tvDate2;
private TextView tvRight;
private ImageView ivUp;
private ImageView ivDown;
private LinearLayout dialogLayout;
// private PopupWindow selectPopup;
private int index = 0;
private Calendar selectedDate;
private Calendar startDate;
private Calendar endDate;
boolean[] week_type = {true, true, true, false, false, false};
boolean[] month_type = {true, true, false, false, false, false};
boolean[] year_type = {true, false, false, false, false, false};
private Date nowWeek;
private Date nowWeekSub;
private Date nowDay;
private Date nowDaySub;
private Date nowMonth;
private int nowYear;
private int nowYearSub;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2);
//左边的
ivUp = (ImageView) findViewById(R.id.ivUp);
tvDate1 = (TextView) findViewById(R.id.tvDateOne);
//右边的
ivDown = (ImageView) findViewById(R.id.ivDown);
tvDate2 = (TextView)findViewById(R.id.tvDateTwo);
//控制年，月，日，周账单的
tvRight = (TextView)findViewById(R.id.tvRight);
dialogLayout = findViewById(R.id.llselectDate);
initView();
tvDate1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String s = tvRight.getText().toString();
if (s != null) {
if (s.equals("日账单")){
selectDate(1,week_type);
}else if (s.equals("周账单")){
selectDate(2,week_type);
}else if (s.equals("月账单")){
selectDate(3,month_type);
}else if (s.equals("年账单")){
selectDate(4,year_type);
}
}
}
});
ivUp.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String s1 = tvRight.getText().toString();
if (s1 != null) {
if (s1.equals("日账单")){
upDate(1);
}else if (s1.equals("周账单")){
upDate(2);
}else if (s1.equals("月账单")){
upDate(3);
}else if (s1.equals("年账单")){
upDate(4);
}
}
}
});
ivDown.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String s2 = tvRight.getText().toString();
if (s2 != null) {
if (s2.equals("日账单")){
downDate(1);
}else if (s2.equals("周账单")){
downDate(2);
}else if (s2.equals("月账单")){
downDate(3);
}else if (s2.equals("年账单")){
downDate(4);
}
}
}
});
}
//选择日期
private void selectDate(final int i,boolean []type) {
//添加标题
TimePickerView timePickerView = new TimePickerBuilder(Main2Activity.this, new OnTimeSelectListener() {
@Override
public void onTimeSelect(Date date, View v) {
if (i==1){
nowDay = date;
String time = new SimpleDateFormat("yyyy-MM-dd").format(date);
//现在选择的时间，往后一天
String nextTime = dayAdd(date);
try {
nowDaySub = new SimpleDateFormat("yyyy-MM-dd").parse(nextTime);
} catch (ParseException e) {
e.printStackTrace();
}
tvDate1.setText(time);
tvDate2.setText(nextTime);
}else if (i==2){
nowWeek = date;
String time = new SimpleDateFormat("yyyy-MM-dd").format(date);
//现在选择的时间，往后七天
String nextTime = weekAdd(date);
try {
nowWeekSub = new SimpleDateFormat("yyyy-MM-dd").parse(nextTime);
} catch (ParseException e) {
e.printStackTrace();
}
tvDate1.setText(time);
tvDate2.setText(nextTime);
}else if (i==3){
nowMonth = date;
String time = new SimpleDateFormat("yyyy-MM").format(date);
//现在选择的时间，往后一月
String nextTime = monthAdd(date);
tvDate1.setText(time);
tvDate2.setText(nextTime);
}
else if (i==4){
String time = new SimpleDateFormat("yyyy").format(date);
nowYear = Integer.parseInt(time);
//现在选择的时间，往后一年
String nextTime = yearAdd(nowYear);
nowYearSub = Integer.parseInt(nextTime);
tvDate1.setText(time);
tvDate2.setText(nextTime);
}
}
})
//添加标题
.setTitleText("请选择")
.setTitleSize(16)
.setCancelColor(Color.parseColor("#656565"))
.setSubmitColor(Color.parseColor("#1E90FF"))
.setContentTextSize(13)
//是否为Dialog样式
.isDialog(true)
//显示添加的控件位置
.setDecorView(dialogLayout)
//设置时间，数组代表年月日时分秒，
.setType(type)
//开始和结束年份
.setRangDate(startDate,endDate)
//当前选择年份
.setDate(selectedDate)
.setItemVisibleCount(4)//可见行数
.setLineSpacingMultiplier(3)//行间距
.setDividerColor(Color.parseColor("#1E90FF"))
.build();
timePickerView.show();
}
//上一周，日，月，年
private void upDate(final int i){
if (i==1){
try {
String right = daySub(nowDaySub);
nowDaySub = new SimpleDateFormat("yyyy-MM-dd").parse(right);
String left = daySub(nowDaySub);
tvDate1.setText(left);
tvDate2.setText(right);
} catch (ParseException e) {
e.printStackTrace();
}
}else if (i==2){
try {
String right = weekSub(nowWeekSub);
nowWeekSub = new SimpleDateFormat("yyyy-MM-dd").parse(right);
String left = weekSub(nowWeekSub);
tvDate1.setText(left);
tvDate2.setText(right);
} catch (ParseException e) {
e.printStackTrace();
}
}else if (i==3){
try {
int a = 0;
if (a == 0) {
String left = monthSub(nowMonth);
nowMonth = new SimpleDateFormat("yyyy-MM").parse(left);
String right = monthAdd(nowMonth);
// showLog("tagaaa"," "+left+" "+right);
tvDate1.setText(left);
tvDate2.setText(right);
a = 1;
} else {
String right = monthSub(nowMonth);
nowMonth = new SimpleDateFormat("yyyy-MM").parse(right);
String left = monthSub(nowMonth);
// showLog("tagaaa"," "+left+" "+right);
tvDate1.setText(left);
tvDate2.setText(right);
}
} catch (ParseException e) {
e.printStackTrace();
}
}else if (i==4){
String right = yearSub(nowYearSub);
nowYearSub = Integer.parseInt(right);
String left = yearSub(nowYearSub);
tvDate1.setText(left);
tvDate2.setText(right);
}
}
//下一周，日，月，年
private void downDate(final int i){
if (i==1){
try {
String left = dayAdd(nowDay);
nowDay = new SimpleDateFormat("yyyy-MM-dd").parse(left);
String right = dayAdd(nowDay);
tvDate1.setText(left);
tvDate2.setText(right);
} catch (ParseException e) {
e.printStackTrace();
}
}else if (i==2){
try {
String left = weekAdd(nowWeek);
nowWeek = new SimpleDateFormat("yyyy-MM-dd").parse(left);
String right = weekAdd(nowWeek);
tvDate1.setText(left);
tvDate2.setText(right);
} catch (ParseException e) {
e.printStackTrace();
}
}else if (i==3){
try {
String left = monthAdd(nowMonth);
nowMonth = new SimpleDateFormat("yyyy-MM").parse(left);
String right = monthAdd(nowMonth);
tvDate1.setText(left);
tvDate2.setText(right);
} catch (ParseException e) {
e.printStackTrace();
}
}else if (i==4){
String left = yearAdd(nowYear);
nowYear = Integer.parseInt(left);
String right = yearAdd(nowYear);
tvDate1.setText(left);
tvDate2.setText(right);
}
}
//初始化控件
protected void initView() {
tvRight.setVisibility(View.VISIBLE);
//这边直接写死了是时间类型
tvRight.setText("周账单");
tvRight.setTextSize(14);
//设置当前日期
initDtate();
}
private void initDtate() {
//当前日期
selectedDate = Calendar.getInstance();
//获取当前年份
int year = selectedDate.get(Calendar.YEAR);
//开始日期
startDate = Calendar.getInstance();
//结束日期
endDate = Calendar.getInstance();
//月份是从0-11,日是1-31的
int startYear = year - 1;
startDate.set(startYear, 0, 1);
endDate.set(year, 11, 31);
nowWeek=new Date(System.currentTimeMillis());
nowWeekSub=new Date(System.currentTimeMillis());
tvDate2.setText(new SimpleDateFormat("yyyy-MM-dd").format(System.currentTimeMillis()));
String nextTime = weekSub(new Date(System.currentTimeMillis()));
tvDate1.setText(nextTime);
}
public String weekAdd(Date date) {
Calendar select_week = Calendar.getInstance();
select_week.setTime(date);
int i = select_week.get(Calendar.DAY_OF_MONTH) + 7;
select_week.set(Calendar.DAY_OF_MONTH, i);
Date nextWeek = select_week.getTime();
String nextTime = new SimpleDateFormat("yyyy-MM-dd").format(nextWeek);
return nextTime;
}
public String weekSub(Date date) {
Calendar select_week = Calendar.getInstance();
select_week.setTime(date);
int i = select_week.get(Calendar.DAY_OF_MONTH) - 7;
select_week.set(Calendar.DAY_OF_MONTH, i);
Date nextWeek = select_week.getTime();
String nextTime = new SimpleDateFormat("yyyy-MM-dd").format(nextWeek);
return nextTime;
}
public String dayAdd(Date date) {
Calendar select_week = Calendar.getInstance();
select_week.setTime(date);
int i = select_week.get(Calendar.DAY_OF_MONTH) + 1;
select_week.set(Calendar.DAY_OF_MONTH, i);
Date nextWeek = select_week.getTime();
String nextTime = new SimpleDateFormat("yyyy-MM-dd").format(nextWeek);
return nextTime;
}
public String daySub(Date date) {
Calendar select_week = Calendar.getInstance();
select_week.setTime(date);
int i = select_week.get(Calendar.DAY_OF_MONTH) - 1;
select_week.set(Calendar.DAY_OF_MONTH, i);
Date nextWeek = select_week.getTime();
String nextTime = new SimpleDateFormat("yyyy-MM-dd").format(nextWeek);
return nextTime;
}
public String monthAdd(Date date) {
Calendar select_week = Calendar.getInstance();
select_week.setTime(date);
int i = select_week.get(Calendar.MONTH);
int year = select_week.get(Calendar.YEAR);
if (i == 12) {
year = select_week.get(Calendar.YEAR) + 1;
i = 1;
}
i++;
select_week.set(Calendar.MONTH, i);
select_week.set(Calendar.YEAR, year);
Date nextWeek = select_week.getTime();
String nextTime = new SimpleDateFormat("yyyy-MM").format(nextWeek);
return nextTime;
}
public String monthSub(Date date) {
Calendar select_week = Calendar.getInstance();
select_week.setTime(date);
int i = select_week.get(Calendar.MONTH);
int year = select_week.get(Calendar.YEAR);
if (i == 0) {
year = select_week.get(Calendar.YEAR) - 1;
i = 12;
}
i--;
select_week.set(Calendar.MONTH, i);
select_week.set(Calendar.YEAR, year);
Date nextWeek = select_week.getTime();
String nextTime = new SimpleDateFormat("yyyy-MM").format(nextWeek);
return nextTime;
}
public String yearAdd(int now) {
now++;
return now + "";
}
public String yearSub(int now) {
now--;
return now + "";
}
}
XML部分：