Activities提供了一种方便管理的创建、保存、回复的对话框机制，例如 onCreateDialog(int), onPrepareDialog(int, Dialog), showDialog(int), dismissDialog(int)等方法，如果使用这些方法的话，Activity将通过getOwnerActivity()方法返回该Activity管理的对话框(dialog).
1,提示框;
2,列表对话框
3,单选对话框
4,多选对话框
提示框,列表框,单选框,多选框写在一个java类中实现其效果
public class MainActivity extends Activity {
private AlertDialog dialog;
int selected, temp = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
// 按钮的事件方法
public void show(View v) {
// 获得被点击的按钮的id
int id = v.getId();
switch (id) {
case R.id.alert://提示框
this.showDialog(10);
break;
case R.id.list://列表框
this.showDialog(20);
break;
case R.id.radio://单选框
this.showDialog(30);
break;
case R.id.multi://多选框
this.showDialog(40);
break;
}
}
@Override
protected Dialog onCreateDialog(int id, Bundle args) {
switch (id) {
case 10://提示框
// 创建一个用来构建对话框的对象
Builder build = new AlertDialog.Builder(this);
build.setTitle("提示对话框");
build.setIcon(android.R.drawable.btn_dialog);
build.setMessage("这里是提示的消息内容");
OnClickListener listener = new OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
switch (which) {
case DialogInterface.BUTTON_POSITIVE:
Toast.makeText(MainActivity.this, "点击的是确定",
Toast.LENGTH_SHORT).show();
break;
case DialogInterface.BUTTON_NEGATIVE:
Toast.makeText(MainActivity.this, "点击的取 消",Toast.LENGTH_SHORT).show();
break;
case DialogInterface.BUTTON_NEUTRAL:
Toast.makeText(MainActivity.this, "点击的是忽略",
Toast.LENGTH_SHORT).show();
break;
}
}
};
// 给对话框添加按钮
build.setPositiveButton("确定", listener);
build.setNegativeButton("取消", listener);
build.setNeutralButton("忽略", listener);
AlertDialog dialog = build.create();
return dialog;
case 20://列表框
Builder build1 = new AlertDialog.Builder(this);
build1.setTitle("列表对话框");
build1.setIcon(android.R.drawable.btn_radio);
final String[] items = { "打开", "关闭", "保存" };
OnClickListener listener1 = new OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Toast.makeText(MainActivity.this, "选中的是：" + items[which],
Toast.LENGTH_SHORT).show();
}
};
// 添加选项列表
build1.setItems(items, listener1);
return build1.create();
case 30://单选框
Builder build2 = new AlertDialog.Builder(this);
build2.setTitle("单选对话框");
build2.setIcon(android.R.drawable.btn_radio);
final String[] items2 = { "在线", "隐身", "忙碌", "离线" };
OnClickListener listener2 = new OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
if (which >= 0) {
temp = which;
} else {
if (which == DialogInterface.BUTTON_POSITIVE) {
selected = temp;
Toast.makeText(MainActivity.this,"选中的是：" +items2[selected],
Toast.LENGTH_SHORT).show();
} else if (which == DialogInterface.BUTTON_NEGATIVE) {
dialog.cancel();
}
}
}
};
build2.setSingleChoiceItems(items2, selected, listener2);
build2.setPositiveButton("确定", listener2);
build2.setNegativeButton("取消", listener2);
build2.setCancelable(false);
return build2.create();
case 40://多选框
Builder build3 = new AlertDialog.Builder(this);
build3.setTitle("多选对话框");
build3.setIcon(android.R.drawable.btn_radio);
final String[] items3 = { "Java", "C++", "C#", "Swift" };
final boolean[] checkedItems = { true, true, false, false };
// 多选按钮的监听器
OnMultiChoiceClickListener listener33= new OnMultiChoiceClickListener() {
@Override
public void onClick(DialogInterface dialog, int which,
boolean isChecked) {
checkedItems[which] = isChecked;
}
};
build3.setMultiChoiceItems(items3, checkedItems, listener33);
OnClickListener listener3 = new OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
if (which == DialogInterface.BUTTON_POSITIVE) {
String str = "";
for (int i = 0; i < items3.length; i++) {
if (checkedItems[i]) {
str += items3[i] + ",";
}
}
Toast.makeText(MainActivity.this, "选中的是：" + str,
Toast.LENGTH_SHORT).show();
}
}
};
build3.setPositiveButton("确定", listener3);
build3.setCancelable(false);
return build3.create();
}
return null;
}
}
5,日期对话框
6,时间对话框
7,进度条对话框
8,进度条对话框
日期,时间,进度条对话框的代码实现;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.dialog);
}
// 按钮的方法
public void show(View v) {
int id = v.getId();
switch (id) {
case R.id.progressbtn:
this.showDialog(10);
break;
case R.id.progress2:
this.showDialog(20);
break;
case R.id.date:
this.showDialog(30);
break;
case R.id.times:
this.showDialog(40);
break;
}
}
// 对话框的方法
@Override
protected Dialog onCreateDialog(int id, Bundle args) {
switch (id) {
case 10:
// 进度条
ProgressDialog pdialog = new ProgressDialog(this);
pdialog.setCancelable(false);
pdialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
pdialog.setMax(100);
pdialog.setSecondaryProgress(30);
return pdialog;
case 20:
ProgressDialog pdialog2 = new ProgressDialog(this);
pdialog2.setTitle("对话框");
pdialog2.setMessage("正在下载..");
pdialog2.setCancelable(false);
pdialog2.setProgressStyle(ProgressDialog.STYLE_SPINNER);
return pdialog2;
case 30:
// 日期的监听器
OnDateSetListener callBack = new OnDateSetListener() {
@Override
public void onDateSet(DatePicker view, int year,
int monthOfYear, int dayOfMonth) {
Toast.makeText(MainActivity.this,
year + "" + monthOfYear + "" + dayOfMonth,
Toast.LENGTH_SHORT).show();
}
};
Calendar calender = Calendar.getInstance();// 获得系统的日期 可以将该方法申明在最外边
int year = calender.get(Calendar.YEAR);
int month = calender.get(Calendar.MONTH);
int day = calender.get(Calendar.DAY_OF_MONTH);
DatePickerDialog dateDialog = new DatePickerDialog(this, callBack,
year, month, day);
return dateDialog;
case 40:
OnTimeSetListener callBacks = new OnTimeSetListener() {
@Override
public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
Toast.makeText(MainActivity.this, hourOfDay + "" + minute,
Toast.LENGTH_SHORT).show();
}
};
Calendar calendertime = Calendar.getInstance();// 获得时间
int hour = calendertime.get(Calendar.HOUR_OF_DAY);
int minute = calendertime.get(Calendar.MINUTE);
TimePickerDialog timeDialog = new TimePickerDialog(this, callBacks,
hour, minute, true);
return timeDialog;
}
return null;
}
// 条用已经创建的对话框的方法
@Override
protected void onPrepareDialog(int id, Dialog dialog, Bundle args) {
switch (id) {
case 10:
ProgressDialog dialog2 = (ProgressDialog) dialog;
new ProThread(dialog2).start();
break;
case 20:
ProgressDialog dialog3 = (ProgressDialog) dialog;
new ProThread2(dialog3).start();
break;
case 30:
// 将对话框转成时间对话框
DatePickerDialog dialogdate = (DatePickerDialog) dialog;
// 获得系统的日期时间
Calendar calender = Calendar.getInstance();// 获得系统的日期
// 获得日期
int year = calender.get(Calendar.YEAR);
int month = calender.get(Calendar.MONTH);
int day = calender.get(Calendar.DAY_OF_MONTH);
// 还原系统的日期
dialogdate.getDatePicker().init(year, month, day, dialogdate);
break;
}
}
//系统默认的进度条
class ProThread2 extends Thread{
private ProgressDialog dialog;
public ProThread2(ProgressDialog dialog) {
this.dialog =dialog;
}
public void run(){
int num=0;
while(num<20){
try {
++num;
Thread.sleep(100);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
dialog.dismiss();//消失;
}
}
// 进度条的线程
class ProThread extends Thread {
ProgressDialog dialog2;
public ProThread(ProgressDialog dialog2) {
this.dialog2 = dialog2;
}
public void run() {
dialog2.incrementProgressBy(-dialog2.getProgress());
int max = dialog2.getMax();
while (dialog2.getProgress() < max) {
try {
dialog2.incrementProgressBy(1);
Thread.sleep(100);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
dialog2.dismiss();// 关闭对话框
}
}
}
