计算年龄使用出生日期 [英] Calculate the age using the date of birth

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本文介绍了计算年龄使用出生日期的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我开发一个Android应用程序,找到年龄由用户提供的出生日期..三个编辑,文本是一个人也没有了一天,另外两个为月份和年份。我得到了code从这个链接。但我不知道下一步该怎么做。 ..我给了code到目前为止,我创建了......请您检查,并帮助我...

main_activity.xml

 < RelativeLayout的的xmlns:机器人=htt​​p://schemas.android.com/apk/res/android
    的xmlns:工具=htt​​p://schemas.android.com/tool​​s
    机器人:layout_width =match_parent
    机器人:layout_height =match_parent

    工具:上下文=MainActivity。>

    <的EditText
        机器人:ID =@ + ID / editText1
        机器人:layout_width =WRAP_CONTENT
        机器人:layout_height =WRAP_CONTENT
        机器人:layout_alignParentRight =真
        机器人:layout_alignParentTop =真
        机器人:layout_marginRight =32dp
        机器人:layout_marginTop =42dp
        机器人:EMS =10
        机器人:inputType =约会>

        <不是requestFocus />
    < /的EditText>

    <的EditText
        机器人:ID =@ + ID / editText2
        机器人:layout_width =WRAP_CONTENT
        机器人:layout_height =WRAP_CONTENT
        机器人:layout_alignRight =@ + ID / editText1
        机器人:layout_below =@ + ID / editText1
        机器人:layout_marginTop =30dp
        机器人:EMS =10
        机器人:inputType =日期/>

    <的EditText
        机器人:ID =@ + ID / editText3
        机器人:layout_width =WRAP_CONTENT
        机器人:layout_height =WRAP_CONTENT
        机器人:layout_alignRight =@ + ID / editText2
        机器人:layout_below =@ + ID / editText2
        机器人:layout_marginTop =24dp
        机器人:EMS =10
        机器人:inputType =日期/>

    <按钮
        机器人:ID =@ + ID /按钮1
        机器人:layout_width =WRAP_CONTENT
        机器人:layout_height =WRAP_CONTENT
        机器人:layout_below =@ + ID / editText3
        机器人:layout_centerHorizo​​ntal =真
        机器人:layout_marginTop =82dp
        机器人:的onClick =getAge
        机器人:文本=按钮/>

    <的TextView
        机器人:ID =@ + ID / textView1
        机器人:layout_width =WRAP_CONTENT
        机器人:layout_height =WRAP_CONTENT
        机器人:layout_alignLeft =@ + ID /按钮1
        机器人:layout_below =@ + ID /按钮1
        机器人:layout_marginTop =54dp
        机器人:文本=TextView的/>

< / RelativeLayout的>
 

MainActivity.java

 公共类MainActivity延伸活动{

    一个长= 0;

    @覆盖
    保护无效的onCreate(包savedInstanceState){
        super.onCreate(savedInstanceState);
        的setContentView(R.layout.activity_main);

        EditText上ET1 =(EditText上)findViewById(R.id.editText1);
        ET2的EditText =(EditText上)findViewById(R.id.editText2);
        ET3的EditText =(EditText上)findViewById(R.id.editText3);
        按钮BTN1 =(按钮)findViewById(R.id.button1);
        TextView的TV1 =(TextView中)findViewById(R.id.textView1);

    }


    公众诠释getAge(INT _year,诠释_month,诠释_day){

        GregorianCalendar的CAL =新的GregorianCalendar();
        INT Y,M,D,A;

        Y = cal.get(Calendar.YEAR);
        M = cal.get(Calendar.MONTH);
        D = cal.get(Calendar.DAY_OF_MONTH);
        cal.set(_year,_month,_day);
        一= Y  -  cal.get(Calendar.YEAR);
        如果((M< cal.get(Calendar.MONTH))
                        || ((米== cal.get(Calendar.MONTH))及及(D&其中;校准
                                        获得(Calendar.DAY_OF_MONTH)))){
                 - 一个;
        }
        如果(一个℃,)
                抛出新抛出:IllegalArgumentException(时代℃的);
        返回;
}

}
 

解决方案

您应该添加一个点击监听到你的按钮,然后在里面,计算年龄和你的TextView中显示出来。

 公共类MainActivity延伸活动{

    一个长= 0;

    @覆盖
    保护无效的onCreate(包savedInstanceState){
        super.onCreate(savedInstanceState);
        的setContentView(R.layout.activity_main);

        最后的EditText ET1 =(EditText上)findViewById(R.id.editText1);
        最后的EditText ET2 =(EditText上)findViewById(R.id.editText2);
        最后的EditText ET3 =(EditText上)findViewById(R.id.editText3);
        按钮BTN1 =(按钮)findViewById(R.id.button1);
        最后的TextView TV1 =(TextView中)findViewById(R.id.textView1);

        btn1.setOnClickListener(新OnClickListener {
            @覆盖
            公共无效的onClick(视图v){
                INT天=的Integer.parseInt(et1.getText()的toString());
                INT月=的Integer.parseInt(et2.getText()的toString());
                INT年=的Integer.parseInt(et3.getText()的toString());

                tv1.setText(将String.valueOf(MainActivity.this.getAge(年,月,日)));
            }
        });
    }


    公众诠释getAge(INT _year,诠释_month,诠释_day){

        GregorianCalendar的CAL =新的GregorianCalendar();
        INT Y,M,D,A;

        Y = cal.get(Calendar.YEAR);
        M = cal.get(Calendar.MONTH);
        D = cal.get(Calendar.DAY_OF_MONTH);
        cal.set(_year,_month,_day);
        一= Y  -  cal.get(Calendar.YEAR);
        如果((M< cal.get(Calendar.MONTH))
                        || ((米== cal.get(Calendar.MONTH))及及(D&其中;校准
                                        获得(Calendar.DAY_OF_MONTH)))){
                 - 一个;
        }
        如果(一个℃,)
                抛出新抛出:IllegalArgumentException(时代℃的);
        返回;
    }

}
 

I am developing an android app to find the age from the date of birth provided by user.. three edit-texts are there one for day and other two for month and year. I got the code from this link.. But I dont know what to do next... I am giving the code so far I created... pls check and help me...

main_activity.xml

<RelativeLayout xmlns: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"

    tools:context=".MainActivity" >

    <EditText
        android:id="@+id/editText1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentRight="true"
        android:layout_alignParentTop="true"
        android:layout_marginRight="32dp"
        android:layout_marginTop="42dp"
        android:ems="10"
        android:inputType="date" >

        <requestFocus />
    </EditText>

    <EditText
        android:id="@+id/editText2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignRight="@+id/editText1"
        android:layout_below="@+id/editText1"
        android:layout_marginTop="30dp"
        android:ems="10"
        android:inputType="date" />

    <EditText
        android:id="@+id/editText3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignRight="@+id/editText2"
        android:layout_below="@+id/editText2"
        android:layout_marginTop="24dp"
        android:ems="10"
        android:inputType="date" />

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/editText3"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="82dp"
        android:onClick="getAge"
        android:text="Button" />

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/button1"
        android:layout_below="@+id/button1"
        android:layout_marginTop="54dp"
        android:text="TextView" />

</RelativeLayout>

MainActivity.java

public class MainActivity extends Activity {

    long a =0;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        EditText et1 = (EditText) findViewById (R.id.editText1);
        EditText et2 = (EditText) findViewById (R.id.editText2);
        EditText et3 = (EditText) findViewById (R.id.editText3);
        Button btn1  = (Button)   findViewById (R.id.button1)  ;
        TextView tv1 = (TextView) findViewById (R.id.textView1);

    }


    public int getAge (int _year, int _month, int _day) {

        GregorianCalendar cal = new GregorianCalendar();
        int y, m, d, a;         

        y = cal.get(Calendar.YEAR);
        m = cal.get(Calendar.MONTH);
        d = cal.get(Calendar.DAY_OF_MONTH);
        cal.set(_year, _month, _day);
        a = y - cal.get(Calendar.YEAR);
        if ((m < cal.get(Calendar.MONTH))
                        || ((m == cal.get(Calendar.MONTH)) && (d < cal
                                        .get(Calendar.DAY_OF_MONTH)))) {
                --a;
        }
        if(a < 0)
                throw new IllegalArgumentException("Age < 0");
        return a;
}

}

解决方案

You should add a click listener to your button, then in it, calculate the age and display it in your TextView.

public class MainActivity extends Activity {

    long a =0;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        final EditText et1 = (EditText) findViewById (R.id.editText1);
        final EditText et2 = (EditText) findViewById (R.id.editText2);
        final EditText et3 = (EditText) findViewById (R.id.editText3);
        Button btn1  = (Button)   findViewById (R.id.button1)  ;
        final TextView tv1 = (TextView) findViewById (R.id.textView1);

        btn1.setOnClickListener(new OnClickListener{
            @Override
            public void onClick (View v){
                int day = Integer.parseInt(et1.getText().toString());
                int month = Integer.parseInt(et2.getText().toString());
                int year = Integer.parseInt(et3.getText().toString());

                tv1.setText(String.valueOf(MainActivity.this.getAge(year, month, day)));
            }
        });
    }


    public int getAge (int _year, int _month, int _day) {

        GregorianCalendar cal = new GregorianCalendar();
        int y, m, d, a;         

        y = cal.get(Calendar.YEAR);
        m = cal.get(Calendar.MONTH);
        d = cal.get(Calendar.DAY_OF_MONTH);
        cal.set(_year, _month, _day);
        a = y - cal.get(Calendar.YEAR);
        if ((m < cal.get(Calendar.MONTH))
                        || ((m == cal.get(Calendar.MONTH)) && (d < cal
                                        .get(Calendar.DAY_OF_MONTH)))) {
                --a;
        }
        if(a < 0)
                throw new IllegalArgumentException("Age < 0");
        return a;
    }

}

这篇关于计算年龄使用出生日期的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!

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