对话框 Dialog
什么是对话框
对话框是在当前的页面之上弹出的小窗口, 用于显示一些重要的提示信息, 提示用户的输入,确认信息,或显示某种状态.如 : 显示进度条对话框, 退出提示.
对话框的特点:
1, 当前界面弹出的小窗口.
2, 用户要与它进行交互, 可以接收用户输入的信息, 也可以反馈信息给用户.
常用对话框:
1, 普通对话框 alertDialog
2, 进度条对话框 ProgressDialog
3, 日期对话框 DatePickerDialog
4, 时间对话框 TimePickerDialog
5, 自定义对话框
常用普通对话框 alertDialog
1, 普通列表对话框 setItems -- onClickListener
2, 单选对话框 setSingleChoiceItems -- onClickListener
3, 多选对话框 setMultiChoiceItems --- > onMultiChoiceClickListener
4, 适配器对话框 setAdapter -- onClickListener
package com.qf.day11_dialog_01;
import java.util.Calendar;
import android.app.Activity;
import android.app.alertDialog;
import android.app.DatePickerDialog;
import android.app.DatePickerDialog.OnDateSetListener;
import android.app.ProgressDialog;
import android.app.TimePickerDialog;
import android.app.TimePickerDialog.OnTimeSetListener;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.os.Bundle;
import android.view.View;
import android.widget.DatePicker;
import android.widget.EditText;
import android.widget.TimePicker;
import android.widget.Toast;
public class MainActivity extends Activity {
private EditText name;
private EditText pwd;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void showalertDialog(View v)
{
//1, 定义普通对话框的构建者
alertDialog.Builder builder = new alertDialog.Builder(MainActivity.this);
//2, 构建对话框
builder.setIcon(R.drawable.img_23);//设置图标
builder.setTitle("提示");//设置标题
builder.setMessage("是否确认退出?");//设置内容
//设置取消按钮
builder.setNegativeButton("取消", null);
//设置确定按钮
builder.setPositiveButton("确定", new onClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
finish();
}
});
//3, 显示对话框
builder.show();
}
public void showProgressDialog(View v)
{
//1, 得到ProgressDialog的对象
ProgressDialog pDialog = new ProgressDialog(this);
//2, 构建对话框
pDialog.setIcon(R.drawable.img_14);
pDialog.setTitle("提示");
pDialog.setMessage("正在加载, 请稍后....");
pDialog.setCancelable(true);//是否可撤销 true 可以 false 不可以
//设置进度条对话框的样式
//ProgressDialog.STYLE_HORIZonTAL 水平的
//ProgressDialog.STYLE_SPINNER 转圈的
pDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
//3, 显示对话框
pDialog.show();
//pDialog.dismiss();//对话框消失
pDialog.setProgress(50);//设置进度值, 在显示对话后,才可以设置
}
public void showDatePickerDialog(View v)
{
//获取系统的当前日期
Calendar calendar = Calendar.getInstance();
int year = calendar.get(Calendar.YEAR);
int monthOfYear = calendar.get(Calendar.MONTH);
int dayOfMonth = calendar.get(Calendar.DAY_OF_MONTH);
//1, 创建带有日期选择器的对话框
DatePickerDialog dPDialog = new DatePickerDialog(this,new onDateSetListener() {
@Override
public void onDateSet(DatePicker view, int year, int monthOfYear,
int dayOfMonth) {
//选择后的日期监听
Toast.makeText(MainActivity.this, year+"-"+(monthOfYear+1)+"-"+dayOfMonth, Toast.LENGTH_SHORT).show();
}
}, year, monthOfYear, dayOfMonth);
//2, 显示对话框
dPDialog.show();
}
public void showTimePickerDialog(View v)
{
//1, 创建带有时间选择器的对话框
TimePickerDialog tpDialog = new TimePickerDialog(this, new onTimeSetListener() {
@Override
public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
Toast.makeText(MainActivity.this, hourOfDay + " :" + minute, Toast.LENGTH_SHORT).show();
}
}, 15, 17, true);
//2, 显示对话框
tpDialog.show();
}
//自定义对话框(在普通对话框基础上实现)
public void showCustomDialog(View v)
{
//1, 得到普通对话框的构建者
alertDialog.Builder builder = new alertDialog.Builder(this);
//2, 构建对话框
builder.setIcon(R.drawable.img_23);
builder.setTitle("用户登陆");
//3, 为对话框设置自定义的视图
View view = getLayoutInflater().inflate(R.layout.login, null);
name = (EditText) view.findViewById(R.id.name);
pwd = (EditText) view.findViewById(R.id.pwd);
builder.setView(view);
//为对话框添加 按钮
builder.setNegativeButton("取消", null);
builder.setPositiveButton("登陆", new onClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
String info = name.getText().toString()+", "+ pwd.getText().toString();
Toast.makeText(MainActivity.this, info, Toast.LENGTH_SHORT).show();
}
});
//4, 显示对话框
builder.show();
}
}
package com.qf.day11_dialog_02;
import android.app.Activity;
import android.app.alertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.DialogInterface.OnClickListener;
import android.content.DialogInterface.OnMultiChoiceClickListener;
import android.graphics.Color;
import android.os.Bundle;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.TextView;
public class MainActivity extends Activity {
private TextView tv;
private int position;//单选列表的 中间转接
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
tv = (TextView) findViewById(R.id.tv);
}
//普通列表对话框
public void showCommon(View v)
{
//1, 得到普通对话框的构建者
alertDialog.Builder builder = new alertDialog.Builder(this);
builder.setIcon(R.drawable.ic_launcher);
builder.setTitle("选择颜色");
//2, 设置列表
//getResources().getStringArray(id)
builder.setItems(R.array.colors, new onClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
switch (which) {
case 0:
tv.setTextColor(Color.RED);
break;
case 1:
tv.setTextColor(Color.GREEN);
break;
case 2:
tv.setTextColor(Color.BLUE);
break;
}
}
});
//3, 显示对话框
builder.show();
}
//单选列表
public void showSingle(View v)
{
//1, 得到普通对话框的构建者
alertDialog.Builder builder = new alertDialog.Builder(this);
builder.setIcon(R.drawable.ic_launcher);
builder.setTitle("设置文字大小");
//2, 设置单选列表
builder.setSingleChoiceItems(R.array.sizes, -1, new onClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// 把当前选中的Item的下标 赋值给全局的变量 position
position = which;
}
});
builder.setPositiveButton("确定", new onClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO 根据全局的position 判断该执行什么样的操作
switch (position) {
case 0:
tv.setTextSize(20);
break;
case 1:
tv.setTextSize(30);
break;
case 2:
tv.setTextSize(40);
break;
}
}
});
//3, 显示对话框
builder.show();
}
//多选列表
public void showMulti(View v)
{
//1, 得到普通对话框的构建者
alertDialog.Builder builder = new alertDialog.Builder(this);
builder.setIcon(R.drawable.ic_launcher);
builder.setTitle("设置内容");
//2, 设置多选列表
//得到所有的数据
final String[] hobbys = getResources().getStringArray(R.array.hobbys);
//选中的Item
final boolean[] checkedItems = new boolean[hobbys.length];
builder.setMultiChoiceItems(R.array.hobbys, checkedItems, new onMultiChoiceClickListener() {
@Override
public void onClick(DialogInterface dialog, int which, boolean isChecked) {
//改变boolean[] 中状态
checkedItems[which] = isChecked;
}
});
builder.setPositiveButton("确定", new onClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
StringBuilder sBuilder = new StringBuilder();
for(int i=0;i adapter = new ArrayAdapter(this,
android.R.layout.simple_list_item_1,
data);
builder.setAdapter(adapter, new onClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Intent intent = new Intent();
switch (which) {
case 0:
intent.setAction("android.settings.WIFI_SETTINGS");
break;
case 1:
intent.setAction("android.settings.SOUND_SETTINGS");
break;
case 2:
intent.setAction("android.settings.SETTINGS");
break;
}
startActivity(intent);
}
});
//3, 显示对话框
//builder.show();
builder.create().show();
}
}
以上所述是小编给大家介绍的Android 对话框 Dialog使用实例讲解，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对考高分网网站的支持！
