Android Basic components---->pickers use

　　Android provides a ready-to-use dialog box that allows users to select a time or date. Today we will simply learn about the use of picker.

The project structure is as follows:

Create a time picker

Create a timepickerfragment

classTimepickerfragmentextendsDialogfragmentImplementsTimepickerdialog.ontimesetlistener {@Override Public voidOntimeset (Timepicker view,intHourofday,intminute) {String time= Hourofday + ":" +minute;    Timeview.settext (time); } @Override PublicDialog Oncreatedialog (Bundle savedinstancestate) {FinalCalendar Calendar =calendar.getinstance (); intHours =Calendar.get (Calendar.hour_of_day); intminutes =Calendar.get (Calendar.minute); return NewTimepickerdialog (Getactivity (), This, hours, minutes, Dateformat.is24hourformat (Getactivity ())); }}

Used in mainactivity :

// Show the picker of the time  Public void Showtimepickerdialog (View v) {    new  timepickerfragment ();    " Timepicker ");}

Create a date picker

Create a datepickerfragment

classDatepickerfragmentextendsDialogfragmentImplementsDatepickerdialog.ondatesetlistener {@Override PublicDialog Oncreatedialog (Bundle savedinstancestate) {FinalCalendar C =calendar.getinstance (); intYear =C.get (calendar.year); intmonth =C.get (Calendar.month); intDay =C.get (Calendar.day_of_month); return NewDatepickerdialog (Getactivity (), This, year, month, day); }     Public voidOndateset (DatePicker view,intYearintMonthintDay ) {String Date= year + "-" + month + "-" +Day ;    Dateview.settext (date); }}

Used in mainactivity :

// Picker of the date displayed  Public void Showdatepickerdialog (View v) {    new  datepickerfragment ();    " DatePicker ");}

The above operation effect is as follows:

complete code for the test

Mainactivity.java

 Packagecom.huhx.linux.pickertest;ImportAndroid.app.DatePickerDialog;ImportAndroid.app.Dialog;Importandroid.app.DialogFragment;ImportAndroid.app.TimePickerDialog;ImportAndroid.os.Bundle;Importandroid.support.v7.app.AppCompatActivity;ImportAndroid.text.format.DateFormat;ImportAndroid.view.View;ImportAndroid.widget.DatePicker;ImportAndroid.widget.TextView;ImportAndroid.widget.TimePicker;ImportJava.util.Calendar; Public classMainactivityextendsappcompatactivity {PrivateTextView Timeview; PrivateTextView Dateview; @Overrideprotected voidonCreate (Bundle savedinstancestate) {Super. OnCreate (savedinstancestate);        Setcontentview (R.layout.activity_main); Timeview=(TextView) Findviewbyid (r.id.time); Dateview=(TextView) Findviewbyid (r.id.date); }    //Show the picker of the time     Public voidShowtimepickerdialog (View v) {dialogfragment newfragment=Newtimepickerfragment (); Newfragment.show (Getfragmentmanager (),"Timepicker"); }    //Picker of the date displayed     Public voidShowdatepickerdialog (View v) {dialogfragment newfragment=Newdatepickerfragment (); Newfragment.show (Getfragmentmanager (),"DatePicker"); }    classDatepickerfragmentextendsDialogfragmentImplementsDatepickerdialog.ondatesetlistener {@Override PublicDialog Oncreatedialog (Bundle savedinstancestate) {FinalCalendar C =calendar.getinstance (); intYear =C.get (calendar.year); intmonth =C.get (Calendar.month); intDay =C.get (Calendar.day_of_month); return NewDatepickerdialog (Getactivity (), This, year, month, day); }         Public voidOndateset (DatePicker view,intYearintMonthintDay ) {String Date= year + "-" + month + "-" +Day ;        Dateview.settext (date); }    }    classTimepickerfragmentextendsDialogfragmentImplementsTimepickerdialog.ontimesetlistener {@Override Public voidOntimeset (Timepicker view,intHourofday,intminute) {String time= Hourofday + ":" +minute;        Timeview.settext (time); } @Override PublicDialog Oncreatedialog (Bundle savedinstancestate) {FinalCalendar Calendar =calendar.getinstance (); intHours =Calendar.get (Calendar.hour_of_day); intminutes =Calendar.get (Calendar.minute); return NewTimepickerdialog (Getactivity (), This, hours, minutes, Dateformat.is24hourformat (Getactivity ())); }    }}

Mainactivity.java

Activity_main.xml

<?XML version= "1.0" encoding= "Utf-8"?><LinearLayoutxmlns:android= "Http://schemas.android.com/apk/res/android"Xmlns:tools= "Http://schemas.android.com/tools"Android:layout_width= "Match_parent"Android:layout_height= "Match_parent"android:orientation= "vertical"Tools:context= "Com.huhx.linux.pickertest.MainActivity">    <TextViewAndroid:id= "@+id/time"Android:text= "Time"Android:layout_width= "Wrap_content"Android:layout_height= "Wrap_content" />    <TextViewAndroid:text= "Date"Android:id= "@+id/date"Android:layout_width= "Wrap_content"Android:layout_height= "Wrap_content" />    <ButtonAndroid:layout_width= "Wrap_content"Android:layout_height= "Wrap_content"Android:onclick= "Showtimepickerdialog"Android:text= "Picker Time" />    <ButtonAndroid:layout_width= "Wrap_content"Android:layout_height= "Wrap_content"Android:onclick= "Showdatepickerdialog"Android:text= "Picker Date" /></LinearLayout>

Activity_main.xml

Android Basic components---->pickers use