ANDROID 时间选择器如何以小时和分钟显示两个数字

Question

大家好，我想在单击按钮时显示两个小时和分钟的数字。

我的代码是：

button.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        int hour= timePicker.getCurrentHour();
        int minute=timePicker.getCurrentMinute();

        Toast.makeText(MainActivity.this,"CLOCK--> "+ String.valueOf(hour)+":"+String.valueOf(minute),Toast.LENGTH_LONG).show();

    }
});

但是输出是例如“9:8”。

我要显示“09:08”。

对不起我的英语=)

Answer 1

Try this
Toast.makeText(MainActivity.this,"CLOCK--> "+ String.format("%02d:%02d", hour, minute),Toast.LENGTH_LONG).show();

Answer 2

如果数字小于 10，则在左侧添加一个零

String hrstr = hour < 10 ? //If hour is lower than 10, add a zero on the left 
    '0' + hour : hour;
String minstr = min < 10 ? //If minute is lower than 10, add a zero on the left
    '0' + min : min;
Toast.makeText(MainActivity.this,"CLOCK--> "+ hrstr +":"+minstr,Toast.LENGTH_LONG).show();

Answer 3

你可以这样使用：

String time = "";
    time = new SimpleDateFormat("HH:mm").format(new Date(System.currentTimeMillis()));

Answer 4

试试这个

Calendar mcurrentTime = Calendar.getInstance();
int hour = mcurrentTime.get(Calendar.HOUR_OF_DAY);
int minute = mcurrentTime.get(Calendar.MINUTE);
TimePickerDialog mTimePicker;
mTimePicker = new TimePickerDialog(mContext, new TimePickerDialog.OnTimeSetListener() {
    @Override
    public void onTimeSet(TimePicker timePicker, int selectedHour, int selectedMinute) {
        yourView.setText(String.format("%02d:%02d", selectedHour, selectedMinute));
    }
}, hour, minute, true);//Yes 24 hour time
mTimePicker.setTitle("Select Time");
mTimePicker.show();

Answer 5

Material 使用 Kotlin 的时间选择器。请确保将 Material 设计库添加到您的 build.Gradle 模块文件中。试试这个！！，它正在工作....

val mTimePicker : MaterialTimePicker

    // Check System Format
    val isSystem24Hour = is24HourFormat(this)
    // timePicker Format according to System Format
    val clockFormat = if (isSystem24Hour) TimeFormat.CLOCK_24H else TimeFormat.CLOCK_12H

    // build the MaterialTimePicker Dialog
    mTimePicker = MaterialTimePicker.Builder()
        .setTimeFormat(clockFormat)
        .setHour(12)
        .setMinute(0)
        .setTitleText("Set Time")
        .build()

    // Show the MaterialTimePicker
    mTimePicker.show(supportFragmentManager,"Boss")

    // Action by Positive response "OK"
    mTimePicker.addOnPositiveButtonClickListener {
        val hour = mTimePicker.hour
        val minute = mTimePicker.minute
        etMTimePicker.setText(String.format("%02d : %02d",hour,minute))
    }

ANDROID 时间选择器如何以小时和分钟显示两个数字

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