中级控件——对话框——时间对话框TimePickerDialog

以你之姓@ 2023-09-28 14:30 31阅读 0赞

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package com.example.myapplication;
    
    import android.app.TimePickerDialog;
    import android.support.v7.app.AppCompatActivity;
    import android.os.Bundle;
    import android.view.View;
    import android.widget.TextView;
    import android.widget.TimePicker;
    import java.util.Calendar;
    
    public class MainActivity extends AppCompatActivity implements View.OnClickListener, TimePickerDialog.OnTimeSetListener
    {
        private TextView tv_time; // 声明一个文本视图对象
        private TimePicker tp_time; // 声明一个时间选择器对象
    
        @Override
        protected void onCreate(Bundle savedInstanceState)
        {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
    
            tv_time = findViewById(R.id.tv_time);
    
            // 从布局文件中获取名叫tp_time的时间选择器
            tp_time = findViewById(R.id.tp_time);
    
            findViewById(R.id.btn_time).setOnClickListener(this);
            findViewById(R.id.btn_ok).setOnClickListener(this);
        }
    
        @Override
        public void onClick(View v)
        {
            if (v.getId() == R.id.btn_time)
            {
                // 获取日历的一个实例，里面包含了当前的时分秒
                Calendar calendar = Calendar.getInstance();
                // 构建一个时间对话框，该对话框已经集成了时间选择器。
                // TimePickerDialog的第二个构造参数指定了时间监听器
                TimePickerDialog dialog = new TimePickerDialog(this, this,
                        calendar.get(Calendar.HOUR_OF_DAY), // 小时
                        calendar.get(Calendar.MINUTE), // 分钟
                        true); // true表示24小时制，false表示12小时制
                dialog.show(); // 显示时间对话框
            } else if (v.getId() == R.id.btn_ok)
            {
                // 获取时间选择器tp_time设定的小时和分钟
                String desc = String.format("您选择的时间是%d时%d分", tp_time.getCurrentHour(), tp_time.getCurrentMinute());
                tv_time.setText(desc);
            }
        }
    
        // 一旦点击时间对话框上的确定按钮，就会触发监听器的onTimeSet方法
        @Override
        public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
            // 获取时间对话框设定的小时和分钟
            String desc = String.format("您选择的时间是%d时%d分分", hourOfDay, minute);
            tv_time.setText(desc);
        }
    }

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=================================================================================

弹出选择框：

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package com.example.myapplication;
    
    import android.app.TimePickerDialog;
    import android.support.v7.app.AppCompatActivity;
    import android.os.Bundle;
    import android.view.View;
    import android.widget.TextView;
    import android.widget.TimePicker;
    import java.util.Calendar;
    
    public class MainActivity extends AppCompatActivity implements View.OnClickListener, TimePickerDialog.OnTimeSetListener
    {
        private TextView tv_time; // 声明一个文本视图对象
        private TimePicker tp_time; // 声明一个时间选择器对象
    
        @Override
        protected void onCreate(Bundle savedInstanceState)
        {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
    
            tv_time = findViewById(R.id.tv_time);
    
    
            findViewById(R.id.btn_time).setOnClickListener(this);
    
        }
    
        @Override
        public void onClick(View v)
        {
            if (v.getId() == R.id.btn_time)
            {
                // 获取日历的一个实例，里面包含了当前的时分秒
                Calendar calendar = Calendar.getInstance();
                // 构建一个时间对话框，该对话框已经集成了时间选择器。
                // TimePickerDialog的第二个构造参数指定了时间监听器
                TimePickerDialog dialog = new TimePickerDialog(this, this,
                        calendar.get(Calendar.HOUR_OF_DAY), // 小时
                        calendar.get(Calendar.MINUTE), // 分钟
                        true); // true表示24小时制，false表示12小时制
                dialog.show(); // 显示时间对话框
            }
        }
    
        // 一旦点击时间对话框上的确定按钮，就会触发监听器的onTimeSet方法
        @Override
        public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
            // 获取时间对话框设定的小时和分钟
            String desc = String.format("您选择的时间是%d时%d分分", hourOfDay, minute);
            tv_time.setText(desc);
        }
    }

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package com.example.myapplication;
    
    import android.support.v7.app.AppCompatActivity;
    import android.os.Bundle;
    import android.view.View;
    import android.widget.TextView;
    import android.widget.TimePicker;
    
    public class MainActivity extends AppCompatActivity implements View.OnClickListener
    {
        private TextView tv_time; // 声明一个文本视图对象
        private TimePicker tp_time; // 声明一个时间选择器对象
    
        @Override
        protected void onCreate(Bundle savedInstanceState)
        {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
    
            tv_time = findViewById(R.id.tv_time);
    
            // 从布局文件中获取名叫tp_time的时间选择器
            tp_time = findViewById(R.id.tp_time);
    
            findViewById(R.id.btn_ok).setOnClickListener(this);
        }
    
        @Override
        public void onClick(View v)
        {
             if (v.getId() == R.id.btn_ok)
            {
                // 获取时间选择器tp_time设定的小时和分钟
                String desc = String.format("您选择的时间是%d时%d分", tp_time.getCurrentHour(), tp_time.getCurrentMinute());
                tv_time.setText(desc);
            }
        }
    }

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