Android 對話框 Dialog

對話框 Dialog

什麼是對話框

對話框是在當前的頁面之上彈出的小窗口, 用於顯示一些重要的提示信息, 提示用戶的輸入,確認信息,

或顯示某種狀態.如 : 顯示進度條對話框, 退出提示.

對話框的特點:

1, 當前界面彈出的小窗口.

2, 用戶要與它進行交互, 可以接收用戶輸入的信息, 也可以反饋信息給用戶.

常用對話框:

1, 普通對話框 AlertDialog

2, 進度條對話框 ProgressDialog

3, 日期對話框 DatePickerDialog

4, 時間對話框 TimePickerDialog

5, 自定義對話框

常用普通對話框 AlertDialog

1, 普通列表對話框 setItems -- onClickListener

2, 單選對話框 setSingleChoiceItems -- onClickListener

3, 多選對話框 setMultiChoiceItems --- > onMultiChoiceClickListener

4, 適配器對話框 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, 定義普通對話框的構建者
    	AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
    	
    	//2, 構建對話框
    	builder.setIcon(R.drawable.img_23);//設置圖標
    	builder.setTitle("提示");//設置標題
    	builder.setMessage("是否確認退出?");//設置內容
    	
    	//設置取消按鈕  
    	/**
    	 * text			按鈕顯示的文字
    	 * listener     按鈕對應的監聽器
    	 */
    	builder.setNegativeButton("取消", null);
    	
    	//設置確定按鈕
    	builder.setPositiveButton("確定", new OnClickListener() {
			
			@Override
			public void onClick(DialogInterface dialog, int which) {
				
				finish();
			}
		});
    	
    	//3, 顯示對話框
    	builder.show();
    }

    public void showProgressDialog(View v)
    {
    	//1, 得到ProgressDialog的對象
    	ProgressDialog pDialog = new ProgressDialog(this);
    	
    	//2, 構建對話框
    	pDialog.setIcon(R.drawable.img_14);
    	pDialog.setTitle("提示");
    	pDialog.setMessage("正在加載, 請稍後....");
    	pDialog.setCancelable(true);//是否可撤銷  true 可以  false 不可以
    	
    	//設置進度條對話框的樣式
    	//ProgressDialog.STYLE_HORIZONTAL  水平的
    	//ProgressDialog.STYLE_SPINNER     轉圈的
    	pDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
    	
    	
    	//3, 顯示對話框
    	pDialog.show();
    	//pDialog.dismiss();//對話框消失
    	
    	pDialog.setProgress(50);//設置進度值,  在顯示對話後,才可以設置
    	
    }

    public void showDatePickerDialog(View v)
    {
    	//獲取系統的當前日期
    	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, 創建帶有日期選擇器的對話框
    	/**
    	 * context		上下文對象
    	 * callBack		onDateSetListener(日期選擇器上的"確定"按鈕監聽器)
    	 * year			默認的年
    	 * monthOfYear  默認的月份
    	 * dayOfMonth   默認的日期
    	 */
    	DatePickerDialog dPDialog  = new DatePickerDialog(this,new OnDateSetListener() {
			
    		/**
    		 * DatePicker view  日期選擇器
    		 */
			@Override
			public void onDateSet(DatePicker view, int year, int monthOfYear,
					int dayOfMonth) {
				
				//選擇後的日期監聽
				Toast.makeText(MainActivity.this, year+"-"+(monthOfYear+1)+"-"+dayOfMonth, Toast.LENGTH_SHORT).show();
			}
		}, year, monthOfYear, dayOfMonth);
    	
    	
    	//2, 顯示對話框
    	dPDialog.show();
    }

    public void showTimePickerDialog(View v)
    {
    	//1, 創建帶有時間選擇器的對話框
    	/**
    	 * context    上下文對象
    	 * callBack	  onTimeSetListener
    	 * hourOfDay  默認的小時
    	 * minute	    默認的分鐘數 
    	 * is24HourView 是否24小時制
    	 */
    	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, 顯示對話框
    	tpDialog.show();
    }

    //自定義對話框(在普通對話框基礎上實現)
    public void showCustomDialog(View v)
    {
    	//1, 得到普通對話框的構建者
    	AlertDialog.Builder builder = new AlertDialog.Builder(this);
    	
    	//2, 構建對話框
    	builder.setIcon(R.drawable.img_23);
    	builder.setTitle("用戶登陸");
    	
    	
    	//3, 為對話框設置自定義的視圖
    	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);
    	
    	
    	//為對話框添加 按鈕
    	builder.setNegativeButton("取消", null);
    	
    	builder.setPositiveButton("登陸", 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, 顯示對話框
    	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;//單選列表的 中間轉接
	
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        tv = (TextView) findViewById(R.id.tv);
    }


    //普通列表對話框
    public void showCommon(View v)
    {
    	//1, 得到普通對話框的構建者
    	AlertDialog.Builder builder = new AlertDialog.Builder(this);
    	
    	builder.setIcon(R.drawable.ic_launcher);
    	builder.setTitle("選擇顏色");
    	
    	//2, 設置列表
    	//getResources().getStringArray(id)
    	builder.setItems(R.array.colors, new OnClickListener() {
			
    		/**
    		 * DialogInterface dialog   對話框
    		 * int which				當前選中的item 從0開始
    		 */
			@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, 顯示對話框
    	builder.show();
    }
    
    //單選列表
    public void showSingle(View v)
    {
    	//1, 得到普通對話框的構建者
    	AlertDialog.Builder builder = new AlertDialog.Builder(this);
    	
    	builder.setIcon(R.drawable.ic_launcher);
    	builder.setTitle("設置文字大小");
    	
    	//2, 設置單選列表
    	/**
    	 * items		選項資源的ID   R.array.sizes
    	 * checkedItem  默認選中的item的下標, 如果沒有默認選中, 那麼設置為-1
    	 * listener		監聽器
    	 */
    	builder.setSingleChoiceItems(R.array.sizes, -1, new OnClickListener() {
			
			@Override
			public void onClick(DialogInterface dialog, int which) {
				// 把當前選中的Item的下標 賦值給全局的變量  position
				position = which;
			}
		});
    	
    	builder.setPositiveButton("確定", new OnClickListener() {
			
			@Override
			public void onClick(DialogInterface dialog, int which) {
				// TODO 根據全局的position  判斷該執行什麼樣的操作
				
				switch (position) {
				case 0:
					tv.setTextSize(20);
					break;

				case 1:
					tv.setTextSize(30);
					break;
					
				case 2:
					tv.setTextSize(40);
					break;
				}
			}
		});
    	
    	
    	//3, 顯示對話框
    	builder.show();
    }

    //多選列表
    public void showMulti(View v)
    {
    	//1, 得到普通對話框的構建者
    	AlertDialog.Builder builder = new AlertDialog.Builder(this);
    	
    	builder.setIcon(R.drawable.ic_launcher);
    	builder.setTitle("設置內容");
    	
    	//2, 設置多選列表
    	/**
    	 * items		資源的ID
    	 * checkedItems 當前選中的Item
    	 * listener		監聽器
    	 */
    	//得到所有的數據
    	final String[] hobbys = getResources().getStringArray(R.array.hobbys);
    	//選中的Item
    	final boolean[] checkedItems =  new boolean[hobbys.length];
    	
    	builder.setMultiChoiceItems(R.array.hobbys, checkedItems, new OnMultiChoiceClickListener() {
			
    		/**
    		 * DialogInterface dialog	當前對話框
    		 * int which				當前選擇的Item下標
    		 * boolean isChecked		當前選擇Item的狀態
    		 */
			@Override
			public void onClick(DialogInterface dialog, int which, boolean isChecked) {
				
				//改變boolean[] 中狀態
				checkedItems[which] = isChecked;
			}
		});
    	
    	builder.setPositiveButton("確定", 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, 顯示對話框
    	//builder.show();
    	builder.create().show();
    }
}