Android 自带的时间选择器（超简单）

看图

布局

代码

public class time extends AppCompatActivity {
    private Button bt;
    @SuppressLint("MissingSuperCall")

    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.time);
        bt = findViewById(R.id.BT);
        bt.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                showDatePickDlg();
            }
        });

    }
    public void showDatePickDlg () {
        Calendar calendar = Calendar.getInstance();
        DatePickerDialog datePickerDialog = new DatePickerDialog(time.this, new DatePickerDialog.OnDateSetListener() {

            @Override
            public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
                time.this.bt.setText(year + "-" + monthOfYear + "-" + dayOfMonth);
            }
        }, calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH));
        datePickerDialog.show();

    }

}