การใช้ไลบรารี ScollableNumberPicker

build.gradle (Module: app)

apply plugin: 'com.android.application'

android {
    compileSdkVersion 26
    defaultConfig {
        applicationId "com.phaisarn.myapplication"
        minSdkVersion 21
        targetSdkVersion 26
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.android.support:appcompat-v7:26.1.0'
    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
    implementation 'com.michaelmuenzer.android:ScrollableNumberPicker:0.2.2'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.2'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
}

apply plugin: 'com.android.application'

android {

compileSdkVersion 26

defaultConfig {

applicationId "com.phaisarn.myapplication"

minSdkVersion 21

targetSdkVersion 26

versionCode 1

versionName "1.0"

testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"

}

buildTypes {

release {

minifyEnabled false

proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'

}

dependencies {

implementation fileTree(dir: 'libs', include: ['*.jar'])

implementation 'com.android.support:appcompat-v7:26.1.0'

implementation 'com.android.support.constraint:constraint-layout:1.1.3'

implementation 'com.michaelmuenzer.android:ScrollableNumberPicker:0.2.2'

testImplementation 'junit:junit:4.12'

androidTestImplementation 'com.android.support.test:runner:1.0.2'

androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'

}

drawable/shape_scrollnum

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">

    <solid android:color="#cde" />
    <corners android:radius="10dp" />
</shape>

<?xml version="1.0" encoding="utf-8"?>

<shape xmlns:android="http://schemas.android.com/apk/res/android"

android:shape="rectangle">

</shape>

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<GridLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="top|center_horizontal"
    android:columnCount="2"
    android:padding="20dp"
    tools:context=".MainActivity"
    tools:showIn="@layout/activity_main">

    <TextView
        android:layout_marginRight="10dp"
        android:text="วันที่"
        android:textSize="18sp" />

    <com.michaelmuenzer.android.scrollablennumberpicker.ScrollableNumberPicker
        android:id="@+id/number_picker_d"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:background="@drawable/shape_scrollnum"
        android:padding="5dp"

        app:snp_maxValue="31"
        app:snp_minValue="1"
        app:snp_orientation="horizontal"
        app:snp_value="25"
        app:snp_value_text_size="18sp" />

    <android.support.v4.widget.Space
        android:layout_width="wrap_content"
        android:layout_height="30dp"
        android:layout_columnSpan="2" />

    <TextView
        android:layout_marginRight="10dp"
        android:text="เดือน"
        android:textSize="18sp" />

    <com.michaelmuenzer.android.scrollablennumberpicker.ScrollableNumberPicker
        android:id="@+id/number_picker_m"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:background="@drawable/shape_scrollnum"
        android:padding="5dp"

        app:snp_maxValue="12"
        app:snp_minValue="1"
        app:snp_orientation="horizontal"
        app:snp_value="10"
        app:snp_value_text_size="18sp" />

    <android.support.v4.widget.Space />

    <Button
        android:id="@+id/button"
        android:layout_gravity="center_horizontal"
        android:layout_marginTop="20dp"
        android:text="OK" />

</GridLayout>

<?xml version="1.0" encoding="utf-8"?>

<GridLayout xmlns:android="http://schemas.android.com/apk/res/android"

xmlns:app="http://schemas.android.com/apk/res-auto"

xmlns:tools="http://schemas.android.com/tools"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_gravity="top|center_horizontal"

android:columnCount="2"

android:padding="20dp"

tools:context=".MainActivity"

tools:showIn="@layout/activity_main">

<TextView

android:layout_marginRight="10dp"

android:text="วันที่"

android:textSize="18sp" />

<com.michaelmuenzer.android.scrollablennumberpicker.ScrollableNumberPicker

android:id="@+id/number_picker_d"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_gravity="center"

android:background="@drawable/shape_scrollnum"

android:padding="5dp"

app:snp_maxValue="31"

app:snp_minValue="1"

app:snp_orientation="horizontal"

app:snp_value="25"

app:snp_value_text_size="18sp" />

<android.support.v4.widget.Space

android:layout_width="wrap_content"

android:layout_height="30dp"

android:layout_columnSpan="2" />

<TextView

android:layout_marginRight="10dp"

android:text="เดือน"

android:textSize="18sp" />

<com.michaelmuenzer.android.scrollablennumberpicker.ScrollableNumberPicker

android:id="@+id/number_picker_m"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_gravity="center"

android:background="@drawable/shape_scrollnum"

android:padding="5dp"

app:snp_maxValue="12"

app:snp_minValue="1"

app:snp_orientation="horizontal"

app:snp_value="10"

app:snp_value_text_size="18sp" />

<android.support.v4.widget.Space />

<Button

android:id="@+id/button"

android:layout_gravity="center_horizontal"

android:layout_marginTop="20dp"

android:text="OK" />

</GridLayout>

MainActivity.java

package com.phaisarn.myapplication;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

import java.util.Arrays;
import java.util.List;

import com.michaelmuenzer.android.scrollablennumberpicker.ScrollableNumberPicker;

public class MainActivity extends AppCompatActivity {
    private ScrollableNumberPicker mScrollDate;
    private ScrollableNumberPicker mScrollMonth;

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

        mScrollDate = findViewById(R.id.number_picker_d);
        mScrollMonth = findViewById(R.id.number_picker_m);

        Button button = findViewById(R.id.button);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                boolean isOK = isOK();
            }
        });
    }

    private boolean isOK() {
        int d = mScrollDate.getValue();
        int m = mScrollMonth.getValue();
        List m30 = Arrays.asList(4, 6, 9, 11);   //เดือนที่มี 30 วัน

        if (m == 2 && d > 29) {
            showToast("เดือนกุมภาพันธ์มีไม่เกิน 29 วัน");
            return false;
        } else if (d == 31 && m30.contains(m)) {  
            //ถ้ากำหนดวันที่เป็น 31 แต่เลือกเดือนที่มี 30 วัน
            showToast("เดือนที่กำหนดมีไม่เกิน 30 วัน");
            return false;
        }

        showToast("OK");
        return true;
    }

    private void showToast(String msg) {
        Toast.makeText(getBaseContext(), msg, Toast.LENGTH_SHORT).show();
    }
}

package com.phaisarn.myapplication;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

import android.widget.Toast;

import java.util.Arrays;

import java.util.List;

import com.michaelmuenzer.android.scrollablennumberpicker.ScrollableNumberPicker;

public class MainActivity extends AppCompatActivity {

private ScrollableNumberPicker mScrollDate;

private ScrollableNumberPicker mScrollMonth;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

mScrollDate = findViewById(R.id.number_picker_d);

mScrollMonth = findViewById(R.id.number_picker_m);

Button button = findViewById(R.id.button);

button.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

boolean isOK = isOK();

}

});

}

private boolean isOK() {

int d = mScrollDate.getValue();

int m = mScrollMonth.getValue();

List m30 = Arrays.asList(4, 6, 9, 11); //เดือนที่มี 30 วัน

if (m == 2 && d > 29) {

showToast("เดือนกุมภาพันธ์มีไม่เกิน 29 วัน");

return false;

} else if (d == 31 && m30.contains(m)) {

//ถ้ากำหนดวันที่เป็น 31 แต่เลือกเดือนที่มี 30 วัน

showToast("เดือนที่กำหนดมีไม่เกิน 30 วัน");

return false;

}

showToast("OK");

return true;

}

private void showToast(String msg) {

Toast.makeText(getBaseContext(), msg, Toast.LENGTH_SHORT).show();

}

Phaisarn Sutheebanjard

blog.phaisarn.com

การใช้ไลบรารี ScollableNumberPicker