Android 对AlertDialog、DatePickerDialog、TimePickerDialog初步学习

1、首先声明所需变量：

private Button buttondialogButton;
private Button buttondatedialogButton;
private Button buttontimedialogButton;

private AlertDialog.Builder builder;
private DatePickerDialog datePickerDialog;
private TimePickerDialog timePickerDialog;

private int year, monthOfYear, dayOfMonth, hourOfDay, minute;

2、AlertDialog

builder = new AlertDialog.Builder(MainActivity.this);
builder.setTitle("提示！");
builder.setMessage("确定要。。。");
builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {

@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
Toast.makeText(MainActivity.this, "已确定", Toast.LENGTH_LONG)
.show();
}
});
builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {

@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
Toast.makeText(MainActivity.this, "已取消", Toast.LENGTH_LONG)
.show();
}
});

实例一个Button进行该DiaLog的显示：

buttondialogButton = (Button) this.findViewById(R.id.button1);
buttondialogButton.setOnClickListener(new View.OnClickListener() {

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
builder.show();
}
});

3、DatePickerDialog

实例一个日历，并对时间（年月日...）等变量进行初始化（初始化为当地当时）；

Calendar calendar = Calendar.getInstance();
year = calendar.get(Calendar.YEAR);
monthOfYear = calendar.get(Calendar.MONTH);
dayOfMonth = calendar.get(Calendar.DAY_OF_MONTH);

hourOfDay = calendar.get(Calendar.HOUR_OF_DAY);
minute = calendar.get(Calendar.MINUTE);

实例化DatePickerDialog并由Button事件显示：

datePickerDialog = new DatePickerDialog(this, new OnDateSetListener() {

@Override
public void onDateSet(DatePicker view, int year, int monthOfYear,
int dayOfMonth) {
// TODO Auto-generated method stub
Log.e(year + "/" + (monthOfYear+1) + "/"
+ dayOfMonth);
}
}, year, monthOfYear, dayOfMonth);

buttondatedialogButton = (Button) this.findViewById(R.id.button2);
buttondatedialogButton.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
datePickerDialog.show();
}
});

4、TimePickerDialog

实例化TimePickerDialog并由Button事件显示：

timePickerDialog = new TimePickerDialog(this, new OnTimeSetListener() {

@Override
public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
// TODO Auto-generated method stub
Log.e(hourOfDay + "/" + minute);
}
}, hourOfDay, minute, true);

buttontimedialogButton = (Button) this.findViewById(R.id.button3);
buttontimedialogButton.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
timePickerDialog.show();
}
});

5、学习总结：

       如有不妥不足之处，请多指教。