4.22打卡

个人作业工具类
• 所花时间：3
• 代码行数：278
• 博客容量：1
• 代码如下：

package com.example.undertaking.util;

import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Locale;

public class DateUtil {

    public static int getDayOfWeek() {
        // 获取当前日期的星期
        Calendar calendar = Calendar.getInstance();
        int dayOfWeek = calendar.get(Calendar.DAY_OF_WEEK); // 返回值范围：1-7，星期日为1，星期一为2，依次类推
        return dayOfWeek;
    }

    public static String getDate() {
        // 获取当前日期，并返回 String 类型数据
        Calendar calendar = Calendar.getInstance();
        String date = String.format("%s%s%s",String.valueOf(calendar.get(Calendar.YEAR)),String.valueOf(calendar.get(Calendar.MONTH) + 1),String.valueOf(calendar.get(Calendar.DAY_OF_MONTH)));

        return date;
    }



    public static String getTime() {
        // 获取当前时间，并返回 MyTime 类型数据
        Calendar calendar = Calendar.getInstance();
        String time = String.format("%s%s",String.valueOf(calendar.get(Calendar.HOUR_OF_DAY)),String.valueOf(calendar.get(Calendar.MINUTE)));

        return time;
    }
}
package com.example.undertaking.util;

import android.app.Activity;
import android.content.Context;
import android.util.Log;
import android.widget.Toast;

public class ToastUtil {
    public static void show(Context context, String message) {
        if (context instanceof Activity) {
            ((Activity) context).runOnUiThread(new Runnable() {
                @Override
                public void run() {
                    Toast.makeText(context, message, Toast.LENGTH_SHORT).show();
                }
            });
        } else {
            Log.e("TAG", "Context is not an instance of Activity");
        }
    }

}