自定义日期弹出框
近日，项目中有用到日期选择，网上找了许久，没有现成的，只能拿一个来改造下,项目使用了第三方开源组件 wheelview,自定义了一个dialog.使用时只需要调dialog,使用callback返回选择的年，月，日。
注意点：
设置文字颜色
private static final int VALUE_TEXT_COLOR =
0xF02e9dd9;
private static final int ITEMS_TEXT_COLOR =
0xFFCFCFCF;
private static final int TEXT_SIZE =
48;
设置wheelview背景 wheel-bg.xml用于设置wheelview背景色
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item>
<shape android:shape="rectangle">
<gradient
android:startColor="#ffffff"
android:centerColor="#ffffff"
android:endColor="#ffffff"
android:angle="90" />
</shape>
</item>
</layer-list>
wheel_val.xml 用于设置前景色即选中时的text背景色
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<gradient
android:startColor="#FFFFFF"
android:centerColor="#00FFFFFF"
android:endColor="#FFFFFF"
android:angle="90" />
</shape>
customerDialog源码
package cn.wq.datewheel.wheel;
import android.app.Dialog;
import android.content.Context;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.Window;
import android.widget.TextView;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.List;
import cn.wq.datewheel.R;
/**
* 自定义的日期选择器
*
* @author sxzhang
*/
public class CusDatePickDialog extends Dialog implements View.OnClickListener {
private Calendar calendar = Calendar.getInstance();
private WheelView yearWheel;
private WheelView monthWheel;
private WheelView dayWheel;
private OnChangeListener onChangeListener;
private final int MARGIN_RIGHT =
20;
private Context mContext;
private int year;
private int oldYear;
private int month;
private int day;
private NumericWheelAdapter yearAdapter;
private NumericWheelAdapter monthAdapter;
private NumericWheelAdapter dayAdapter;
private List<WheelAdapter> adapterList =
new ArrayList<>();
private List<WheelView> wheelViewList =
new ArrayList<>();
private List<OnWheelChangedListener> listenerList =
new ArrayList<>();
public CusDatePickDialog(Context context) {
super(context);
this.mContext = context;
}
/**
* 初始化
*
* @param context
*/
private void init(Context context) {
year = calendar.get(Calendar.YEAR);
oldYear = year;
month = calendar.get(Calendar.MONTH) +
1;
day = calendar.get(Calendar.DAY_OF_MONTH);
View view = LayoutInflater.from(context).inflate(R.layout.dialog_layout_date_select,
null);
yearWheel = (WheelView) view.findViewById(R.id.wheel_year);
monthWheel = (WheelView) view.findViewById(R.id.wheel_monty);
dayWheel = (WheelView) view.findViewById(R.id.wheel_day);
yearAdapter =
new NumericWheelAdapter(year,
2020);
monthAdapter =
new NumericWheelAdapter(
1,
12);
dayAdapter =
new NumericWheelAdapter(
1,
31);
wheelViewList.add(yearWheel);
wheelViewList.add(monthWheel);
wheelViewList.add(dayWheel);
adapterList.add(yearAdapter);
adapterList.add(monthAdapter);
adapterList.add(dayAdapter);
listenerList.add(onYearsChangedListener);
listenerList.add(onMonthChangedListener);
listenerList.add(onDaysChangedListener);
setWhellView();
TextView mTvCancel = (TextView) view.findViewById(R.id.tv_cancel);
TextView mTvSure = (TextView) view.findViewById(R.id.tv_sure);
mTvCancel.setOnClickListener(
this);
mTvSure.setOnClickListener(
this);
this.setContentView(view);
}
private void setWhellView() {
for (
int i =
0; i < wheelViewList.size(); i++) {
WheelView wheelView = wheelViewList.get(i);
wheelView.setAdapter(adapterList.get(i));
wheelView.setCyclic(
true);
wheelView.setVisibleItems(
3);
wheelView.addChangingListener(listenerList.get(i));
}
monthWheel.setCurrentItem(month -
1);
dayWheel.setCurrentItem(day -
1);
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
init(mContext);
}
/**
* 年监听器
*/
private OnWheelChangedListener onYearsChangedListener =
new OnWheelChangedListener() {
@Override
public void onChanged(WheelView mins,
int oldValue,
int newValue) {
calendar.set(Calendar.YEAR, newValue +
1);
year = oldYear + newValue;
setDayAdapter();
}
};
/**
* 根据年，月设置当月显示多少天
*/
private void setDayAdapter() {
Calendar c = Calendar.getInstance();
c.set(year, month -
1,
1);
int days = c.getActualMaximum(Calendar.DAY_OF_MONTH);
dayAdapter.setMaxValue(days);
if (day >
28) {
dayWheel.post(
new Runnable() {
@Override
public void run() {
dayWheel.setAdapter(dayAdapter);
dayWheel.setCurrentItem(
0,
false);
}
});
}
}
private boolean isFirst =
true;
/**
* 滑动月份监听器
*/
private OnWheelChangedListener onMonthChangedListener =
new OnWheelChangedListener() {
@Override
public void onChanged(WheelView mins,
int oldValue,
int newValue) {
month = newValue +
1;
calendar.set(Calendar.MONTH, newValue +
1);
if (isFirst) {
isFirst =
false;
return;
}
setDayAdapter();
}
};
/**
* 滑动日期监听器
*/
private OnWheelChangedListener onDaysChangedListener =
new OnWheelChangedListener() {
@Override
public void onChanged(WheelView mins,
int oldValue,
int newValue) {
day = newValue +
1;
}
};
@Override
public void onClick(View v) {
if (v.getId() == R.id.tv_cancel) {
dismiss();
}
else if (v.getId() == R.id.tv_sure) {
change();
dismiss();
}
}
/**
* 滑动改变监听器回调的接口
*/
public interface OnChangeListener {
void onChange(
int year,
int month,
int day);
}
/**
* 设置滑动改变监听器
*
* @param onChangeListener
*/
public void setOnChangeListener(OnChangeListener onChangeListener) {
this.onChangeListener = onChangeListener;
}
@Override
protected void onStop() {
wheelViewList =
null;
adapterList =
null;
listenerList =
null;
super.onStop();
}
/**
* 滑动最终调用的方法
*/
private void change() {
if (onChangeListener !=
null) {
onChangeListener.onChange(year, month, day);
}
}
}
adapter中内容
adapter 使用下方代码 创建，设置最小值与最大值。也可以使用set方法设置
public NumericWheelAdapter(
int minValue,
int maxValue) {
this(minValue, maxValue,
null);
}
具体代码如下：
package cn.wq.datewheel.wheel;
/**
* Numeric Wheel adapter.
*/
public class NumericWheelAdapter implements WheelAdapter {
/**
* The default min value
*/
public static final int DEFAULT_MAX_VALUE =
9;
/**
* The default max value
*/
private static final int DEFAULT_MIN_VALUE =
0;
private int minValue;
private int maxValue;
private String format;
/**
* Default constructor
*/
public NumericWheelAdapter() {
this(DEFAULT_MIN_VALUE, DEFAULT_MAX_VALUE);
}
/**
* Constructor
*
* @param minValue the wheel min value
* @param maxValue the wheel max value
*/
public NumericWheelAdapter(
int minValue,
int maxValue) {
this(minValue, maxValue,
null);
}
/**
* Constructor
*
* @param minValue the wheel min value
* @param maxValue the wheel max value
* @param format the format string
*/
public NumericWheelAdapter(
int minValue,
int maxValue, String format) {
this.minValue = minValue;
this.maxValue = maxValue;
this.format = format;
}
@Override
public String
getItem(
int index) {
if (index >=
0 && index < getItemsCount()) {
int value = minValue + index;
return format !=
null ? String.format(format, value) : Integer.toString(value);
}
return null;
}
@Override
public int getItemsCount() {
return maxValue - minValue +
1;
}
@Override
public int getMaximumLength() {
int max = Math.max(Math.abs(maxValue), Math.abs(minValue));
int maxLen = Integer.toString(max).length();
if (minValue <
0) {
maxLen++;
}
return maxLen;
}
public void setMaxValue(
int maxValue) {
this.maxValue = maxValue;
}
}
使用的接口回调
package cn.wq.datewheel.wheel;
/**
* Wheel changed listener interface.
* <p>The currentItemChanged() method is called whenever current wheel positions is changed:
* <li> New Wheel position is set
* <li> Wheel view is scrolled
*/
public interface OnWheelChangedListener {
/**
* Callback method to be invoked when current item changed
*
* @param wheel the wheel view whose state has changed
* @param oldValue the old value of current item
* @param newValue the new value of current item
*/
void onChanged(WheelView wheel,
int oldValue,
int newValue);
}
package cn.wq.datewheel.wheel;
/**
* Wheel scrolled listener interface.
*/
public interface OnWheelScrollListener {
/**
* Callback method to be invoked when scrolling started.
*
* @param wheel the wheel view whose state has changed.
*/
void onScrollingStarted(WheelView wheel);
/**
* Callback method to be invoked when scrolling ended.
*
* @param wheel the wheel view whose state has changed.
*/
void onScrollingFinished(WheelView wheel);
}
MainActivity代码
package cn.wq.datewheel;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
import cn.wq.datewheel.wheel.CusDatePickDialog;
public class MainActivity extends AppCompatActivity {
private Button mBtOpenDialog;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mBtOpenDialog = (Button) findViewById(R.id.bt_popup);
mBtOpenDialog.setOnClickListener(
new View.OnClickListener() {
@Override
public void onClick(View v) {
CusDatePickDialog dialog =
new CusDatePickDialog(MainActivity.
this);
dialog.setOnChangeListener(
new CusDatePickDialog.OnChangeListener() {
@Override
public void onChange(
int year,
int month,
int day) {
String date = String.format(
"d-d-d", year, month, day);
showToast(date);
}
});
dialog.show();
}
});
}
private void showToast(String str) {
Toast.makeText(MainActivity.
this, str, Toast.LENGTH_SHORT).show();
}
}
layout文件
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@android:color/white"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginTop="20dp"
android:gravity="center"
android:text="选择日期"
android:textColor="@color/color_blue"
android:textSize="20sp" />
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:layout_marginTop="16dp"
android:background="@color/color_blue" />
<FrameLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="16dp"
android:layout_marginTop="16dp"
android:gravity="center"
android:orientation="horizontal">
<cn.wq.datewheel.wheel.WheelView
android:id="@+id/wheel_year"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="20dp" />
<TextView
style="@style/wheel_text_unit"
android:text="年" />
<cn.wq.datewheel.wheel.WheelView
android:id="@+id/wheel_monty"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="20dp"
android:background="@color/color_blue" />
<TextView
style="@style/wheel_text_unit"
android:text="月" />
<cn.wq.datewheel.wheel.WheelView
android:id="@+id/wheel_day"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="20dp" />
<TextView
style="@style/wheel_text_unit"
android:text="日" />
</LinearLayout>
</FrameLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="30dp"
android:layout_marginTop="16dp"
android:orientation="horizontal">
<TextView
android:id="@+id/tv_cancel"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginRight="16dp"
android:layout_weight="1"
android:gravity="right"
android:text="取消"
android:textColor="@color/color_blue" />
<TextView
android:id="@+id/tv_sure"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginLeft="16dp"
android:layout_weight="1"
android:text="确定"
android:textColor="@color/color_blue" />
</LinearLayout>
</LinearLayout>
效果图：
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