時間選擇器TimePickerDialog
一切的出發點，主要程式碼：
private TimePickerDialog timePickerDialog;
timePickerDialog=new TimePickerDialog(this,onTimeSetListener,hours,mins,false);
timePickerDialog.show(); //調用
/**
*this 運行指定Activity
*onTimeSetListener 重製時間監聽、用戶選好時間後的監聽
*hours 設置初始hours 未選擇/初始 前的小時
*mins 未選擇/初始 前的分鐘
*false 鬧鐘顯示方式(true為上下午制、false為24小時制)
*/
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實作：
*onTimeSetListener 重製時間監聽、用戶選好時間後的監聽
onTimeSetListener = new TimePickerDialog.OnTimeSetListener() {
@RequiresApi(api = Build.VERSION_CODES.N)
@Override
public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
DecimalFormat decimalFormat = new DecimalFormat("00");
textview.setText(decimalFormat.format(hourOfDay) + ":" + decimalFormat.format(minute));
}
};
/**
* DecimalFormat 數字格式轉換的方法，我們用到裡面的format 避免倒數到10秒內時(12:09)，產生12:9 這種情況
*/
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*hours 設置初始hours 未選擇/初始 前的小時
*mins 未選擇/初始 前的分鐘
final Calendar calendar = Calendar.getInstance();
int hour = calendar.get(Calendar.HOUR_OF_DAY);
int minute = calendar.get(Calendar.MINUTE);
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*false 鬧鐘顯示方式(true為上下午制、false為24小時制)
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簡單三步驟END！
全部參考程式碼：
MainActivity.xml
<code>
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.example.a015865.timepicker.MainActivity">
<TextView
android:id="@+id/hello"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hello World!" />
<Button
android:onClick="picker"
android:id="@+id/picker"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/hello"
android:text="Picker" />
<Button
android:onClick="pickertwo"
android:id="@+id/pickertwo"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/picker"
android:text="Pickertwo" />
</RelativeLayout></code>
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MainActivity.Java
完成囉！
public class MainActivity extends AppCompatActivity {
private TimePickerDialog timePickerDialog;
private TimePickerDialog.OnTimeSetListener onTimeSetListener;
private TextView textview;
Calendar calendar;
int hour;
int minute;
@RequiresApi(api = Build.VERSION_CODES.N)
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
textview = (TextView) findViewById(R.id.hello);
calendar = Calendar.getInstance();
hour = calendar.get(Calendar.HOUR_OF_DAY);
minute = calendar.get(Calendar.MINUTE);
onTimeSetListener = new TimePickerDialog.OnTimeSetListener() {
@RequiresApi(api = Build.VERSION_CODES.N)
@Override
public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
DecimalFormat decimalFormat = new DecimalFormat("00");
textview.setText(decimalFormat.format(hourOfDay) + ":" + decimalFormat.format(minute));
}
};
}
public void picker(View view) {
timePickerDialog = new TimePickerDialog(this, onTimeSetListener, hour,minute, true);
timePickerDialog.show();
}
public void pickertwo(View view) {
timePickerDialog = new TimePickerDialog(this, onTimeSetListener, hour,minute, false);
timePickerDialog.show();
}
}
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完成囉！
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