package com.android.picker;

import android.app.Dialog;import android.content.Context;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.TextView;

public class NumberPickerDialog extends Dialog implements OnClickListener {    Button btn_ok;    Button btn_cancel;    TextView txt_input;    TextView txt_rangeMin;    TextView txt_rangeMax;    Button btn_1;    Button btn_2;    Button btn_3;    Button btn_4;    Button btn_5;    Button btn_6;    Button btn_7;    Button btn_8;    Button btn_9;    Button btn_0;    Button btn_clear;    Button btn_dot;    Context context;    String initNumber;int mode;

public interface OnMyNumberSetListener {/**         * 数字被设定之后执行此方法         *          * @param number         *            当前文字框中字符串         * @param mode         *            可用以标识调用者*/void onNumberSet(String number, int mode);    }

private OnMyNumberSetListener mListener;

public NumberPickerDialog(Context context, OnMyNumberSetListener listener,            String number, int mode) {super(context);this.context = context;this.mListener = listener;this.initNumber = number;this.mode = mode;    }

    @Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);        setContentView(R.layout.number_picker_layout);        setTitle("Number Picker");

        txt_input = (TextView) findViewById(R.id.txt_inputNumber);

        txt_input.setText(String.valueOf(initNumber));

        btn_1 = (Button) findViewById(R.id.btn_1);        btn_2 = (Button) findViewById(R.id.btn_2);        btn_3 = (Button) findViewById(R.id.btn_3);        btn_4 = (Button) findViewById(R.id.btn_4);        btn_5 = (Button) findViewById(R.id.btn_5);        btn_6 = (Button) findViewById(R.id.btn_6);        btn_7 = (Button) findViewById(R.id.btn_7);        btn_8 = (Button) findViewById(R.id.btn_8);        btn_9 = (Button) findViewById(R.id.btn_9);        btn_0 = (Button) findViewById(R.id.btn_0);        btn_clear = (Button) findViewById(R.id.btn_clear);        btn_dot = (Button) findViewById(R.id.btn_dot);        btn_ok = (Button) findViewById(R.id.ok);        btn_cancel = (Button) findViewById(R.id.cancel);        btn_1.setOnClickListener(this);        btn_2.setOnClickListener(this);        btn_3.setOnClickListener(this);        btn_4.setOnClickListener(this);        btn_5.setOnClickListener(this);        btn_6.setOnClickListener(this);        btn_7.setOnClickListener(this);        btn_8.setOnClickListener(this);        btn_9.setOnClickListener(this);        btn_0.setOnClickListener(this);        btn_clear.setOnClickListener(this);        btn_dot.setOnClickListener(this);        btn_ok.setOnClickListener(this);        btn_cancel.setOnClickListener(this);        setCancelable(false);    }

private void setText(String num) {        String nowNumber = txt_input.getText().toString();        String newNumber = "";

/* 限制最多位数为8 */if (nowNumber.length() >= 8) {return;        }

/* 限制为两位小数 */int dotSite = nowNumber.indexOf(".");if (dotSite > 0 && dotSite + 2 < nowNumber.length()) {return;        }

if (!num.equals(".")) {// 输入不为小数点            if (nowNumber.equals("") || nowNumber.equals("0")) {                newNumber = String.valueOf(num);            } else {                newNumber = nowNumber.concat(String.valueOf(num));            }        } else {// 输入小数点            if (nowNumber.equals("") || nowNumber.contains(".")) {// 当前值为空或者已包含小数点时不执行操作                return;            } else {                newNumber = nowNumber.concat(".");            }        }        txt_input.setText(newNumber);    }

private void deleteText() {        txt_input.setText("");    }

    @Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.ok:            String number = txt_input.getText().toString();if (number.endsWith(".")) {                number = number.substring(0, number.length() - 1);            }            mListener.onNumberSet(number, mode);            dismiss();break;case R.id.cancel:            dismiss();break;case R.id.btn_0:            setText("0");break;case R.id.btn_1:            setText("1");break;case R.id.btn_2:            setText("2");break;case R.id.btn_3:            setText("3");break;case R.id.btn_4:            setText("4");break;case R.id.btn_5:            setText("5");break;case R.id.btn_6:            setText("6");break;case R.id.btn_7:            setText("7");break;case R.id.btn_8:            setText("8");break;case R.id.btn_9:            setText("9");break;case R.id.btn_dot:            setText(".");break;case R.id.btn_clear:            deleteText();break;        }    }}

package com.android.picker;

import com.android.picker.R;import android.app.Activity;import android.os.Bundle;import android.view.View;import android.widget.Button;import android.widget.TextView;

public class NumberPickerDemoActivity extends Activity {

private TextView textView1;private Button button1;

    @Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);        setContentView(R.layout.main);

        textView1 = (TextView) findViewById(R.id.text1);        button1 = (Button) findViewById(R.id.button1);        button1.setOnClickListener(new View.OnClickListener() {public void onClick(View view) {                showNumberPicker(textView1.getText().toString(), 0);            }        });    }

private void showNumberPicker(String number, int mode) {        String nowNumber = "0";if (!number.equals("")) {            nowNumber = number;        }new NumberPickerDialog(this, listener, nowNumber, mode).show();    }

private NumberPickerDialog.OnMyNumberSetListener listener = new NumberPickerDialog.OnMyNumberSetListener() {        @Overridepublic void onNumberSet(String number, int mode) {            textView1.setText(number);        }    };}