Android时间选择器练习

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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="match_parent"
    android:layout_height="match_parent"
    tools:context=".TimeTest">

    <TimePicker
        android:id="@+id/timepicker"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"></TimePicker>

</RelativeLayout>

public class TimeTest extends AppCompatActivity {

    private TimePicker timePicker;

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

        timePicker = findViewById(R.id.timepicker);
        timePicker.setIs24HourView(true);//24小时制的时间日期,有问题自己详细去了解
        timePicker.setOnTimeChangedListener(new TimePicker.OnTimeChangedListener() {
            @Override
            public void onTimeChanged(TimePicker view, int hourOfDay, int minute) {
                String str = hourOfDay+"时"+minute+"分";
                Toast.makeText(TimeTest.this, "str", Toast.LENGTH_SHORT).show();
            }
        });

    }
}