AlertDialogue & Toast

来源：互联网发布：极品飞车20优化编辑：程序博客网时间：2024/06/06 03:01

转自：大飞_Rflyee-http://blog.csdn.net/rflyee/article/details/8978100

先了解一下AlertDialog.Builder创建对话框的几个常用方法：

setTitle() ：设置标题
setIcon() ：设置图标
setMessage()：设置提示内容
setView() ：设置自定义视图
setItems() ：设置对话框要显示的一个list
setMultiChoiceItems() ：设置对话框显示的复选框
setNeutralButton() ：普通按钮

setPositiveButton() ：添加"Yes"按钮
setNegativeButton() ：添加"No"按钮
create() ：创建对话框

show() ：显示对话框

下面以一个例子简单演示一下其应用，先看一下效果图：

Toast的使用效果：

AlertDialog的简单使用：

类似于ListView的效果：

类似于RadioButton的效果：

多选的效果：

自定义视图：

代码示例如下：

一个主activity，两个布局文件；

ReviewCriteria.java

[java] view plaincopy
package com.test.restaurantfinder;  
  
import android.app.Activity;  
import android.app.AlertDialog;  
import android.content.DialogInterface;  
import android.os.Bundle;  
import android.util.Log;  
import android.view.Gravity;  
import android.view.LayoutInflater;  
import android.view.Menu;  
import android.view.View;  
import android.view.View.OnClickListener;  
import android.widget.Button;  
import android.widget.Toast;  
  
public class ReviewCriteria extends Activity {  
    private static final String tag = "reviewCriteria";  
    private final String arrayFruit[] = new String[]{"apple","banana","pear"};  
      
    private Button tishiButton = null;      //提示Toast的按钮  
    private Button tishiAlert = null;       //普通AlertDialog  
    private Button tishiAlertItem = null;   //类似ListItem  
    private Button AlertRadio = null;       //类似RadioButton  
    private int selectedFruitIndex = 0;       
      
    private Button CheckButton = null;      //类似CheckBox  
    final boolean[] arrayFruitSelected = new boolean[] {false, true, false}; //默认选中  
      
    private Button myCustomButton = null;       //自定义视图  
    private View myCustomView = null;  
      
    @Override  
    protected void onCreate(Bundle savedInstanceState) {  
        super.onCreate(savedInstanceState);  
        setContentView(R.layout.activity_review_criteria);  
          
        this.tishiButton = (Button)findViewById(R.id.tishiButton);  
        this.tishiAlert = (Button)findViewById(R.id.tishiAlart);  
        this.tishiAlertItem = (Button)findViewById(R.id.AlertItem);  
        this.AlertRadio = (Button)findViewById(R.id.AlertSingleChoice);  
        this.CheckButton = (Button)findViewById(R.id.AlertCheckBox);  
        this.myCustomButton = (Button)findViewById(R.id.customView);  
          
        //Toast  
        this.tishiButton.setOnClickListener(  
                new OnClickListener(){  
                    @Override  
                    public void onClick(View v){  
                        Log.i(tag, "in onClick1");  
                        /*注：在内嵌函数中使用时context 一定要对，不能只是this，而应该是Class.this或者getApplicationContext()*/  
                        //Toast.makeText(ReviewCriteria.this, "this is a toast", Toast.LENGTH_LONG).show();  
                        Toast toast = Toast.makeText(ReviewCriteria.this, "this is a toast", Toast.LENGTH_SHORT);  
                        toast.setGravity(Gravity.CENTER, 0, 0);  
                        toast.show();  
                    }  
                });  
          
        //AlertDialog  
        this.tishiAlert.setOnClickListener(  
                new OnClickListener(){  
                    public void onClick(View v){  
                        new AlertDialog.Builder(ReviewCriteria.this).  
                        setIcon(R.drawable.ic_launcher).//图标  
                        setTitle("Delete?").//标题  
                        setMessage("this is a AlertDialog!").//提示内容  
                        setPositiveButton("Yes", new DialogInterface.OnClickListener() {//确定  
                            @Override  
                            public void onClick(DialogInterface arg0, int arg1) {  
                                //yes to do  
                            }  
                        }).setNegativeButton("No", new DialogInterface.OnClickListener(){//取消  
                            @Override  
                            public void onClick(DialogInterface arg1,int witch){  
                                //no to do  
                            }  
                        }).  
                        setNeutralButton("More", new DialogInterface.OnClickListener() {//普通确定按钮  
                            @Override  
                            public void onClick(DialogInterface dialog, int which) {  
                                //查看更多  
                            }  
                        }).  
                        show();  
                    }  
                });  
          
        //类似ListItem  
        this.tishiAlertItem.setOnClickListener(  
                new OnClickListener(){  
                    public void onClick(View v){  
                        new AlertDialog.Builder(ReviewCriteria.this).  
                        setTitle("witch do you like?").  
                        setItems(arrayFruit,new DialogInterface.OnClickListener() {//Items to choose  
                            @Override  
                            public void onClick(DialogInterface dialog, int which) {  
                                Toast.makeText(ReviewCriteria.this, arrayFruit[which], Toast.LENGTH_LONG).show();  
                            }  
                        }).  
                        setNegativeButton("cancel", new DialogInterface.OnClickListener() {//cancel  
                              
                            @Override  
                            public void onClick(DialogInterface dialog, int which) {  
                                //cancel to do  
                            }  
                        }).  
                        show();  
                    }  
                });  
        //类似RadioButton  
        this.AlertRadio.setOnClickListener(  
                new OnClickListener(){  
                    public void onClick(View v){  
                        new AlertDialog.Builder(ReviewCriteria.this).  
                        setTitle("witch do you like?").  
                        setSingleChoiceItems(arrayFruit, 0, new DialogInterface.OnClickListener() {  
                            @Override  
                            public void onClick(DialogInterface dialog, int which) {  
                                selectedFruitIndex = which;  
                            }  
                        }).  
                        setPositiveButton("OK",new DialogInterface.OnClickListener() {  
                            @Override  
                            public void onClick(DialogInterface dialog, int which) {  
                                Toast.makeText(ReviewCriteria.this, arrayFruit[selectedFruitIndex], Toast.LENGTH_LONG).show();  
                            }  
                        }).  
                        setNegativeButton("Cancel", new DialogInterface.OnClickListener() {//cancel  
                            @Override  
                            public void onClick(DialogInterface dialog, int which) {  
                                //cancel to do  
                            }  
                        }).  
                        show();  
                    }  
                });  
          
        //类似CheckBox  
        this.CheckButton.setOnClickListener(  
                new OnClickListener(){  
                    public void onClick(View v){  
                        new AlertDialog.Builder(ReviewCriteria.this).  
                        setTitle("which do you like?").  
                        setMultiChoiceItems(arrayFruit, arrayFruitSelected, new DialogInterface.OnMultiChoiceClickListener() {  
                            @Override  
                            public void onClick(DialogInterface arg0, int which, boolean isChecked) {  
                                arrayFruitSelected[which] = isChecked;  
                            }  
                        }).  
                        setPositiveButton("OK",new DialogInterface.OnClickListener() {  
                            @Override  
                            public void onClick(DialogInterface dialog, int which) {  
                                String toastString = "你选中了：";  
                                for(int i = 0;i < arrayFruit.length; i++){  
                                    if(arrayFruitSelected[i]){  
                                        toastString += arrayFruit[i]+"、";  
                                    }  
                                }  
                                Toast.makeText(ReviewCriteria.this, toastString, Toast.LENGTH_LONG).show();  
                            }  
                        }).  
                        setNegativeButton("Cancel", new DialogInterface.OnClickListener() {  
                            @Override  
                            public void onClick(DialogInterface dialog, int which) {  
                                  
                            }  
                        }).  
                        show();  
                    }  
                });  
        //自定义视图  
        LayoutInflater layoutInflater = LayoutInflater.from(this);  
        myCustomView = layoutInflater.inflate(R.layout.customview, null);  
          
        this.myCustomButton.setOnClickListener(  
                new OnClickListener(){  
                    public void onClick(View v){  
                        new AlertDialog.Builder(ReviewCriteria.this).  
                        setTitle("login").  
                        setView(myCustomView).  
                        setPositiveButton("Login", new DialogInterface.OnClickListener() {  
                            @Override  
                            public void onClick(DialogInterface dialog, int which) {  
                                  
                            }  
                        }).  
                        setNegativeButton("Cancel", new DialogInterface.OnClickListener() {  
                            @Override  
                            public void onClick(DialogInterface dialog, int which) {  
                                  
                            }  
                        }).  
                        show();  
                    }  
                });  
          
    }  
  
    @Override  
    public boolean onCreateOptionsMenu(Menu menu) {  
        // Inflate the menu; this adds items to the action bar if it is present.  
        getMenuInflater().inflate(R.menu.review_criteria, menu);  
        return true;  
    }  
      
}  

activity_review_criteria.xml

[html] view plaincopy
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"  
    xmlns:tools="http://schemas.android.com/tools"  
    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=".ReviewCriteria" >  
  
    <TextView  
        android:id="@+id/title"  
        android:layout_width="wrap_content"  
        android:layout_height="wrap_content"  
        android:text="@string/hello_world" />  
      
    <!--show tips by Toast  -->  
    <Button  
        android:id="@+id/tishiButton"  
        android:layout_below="@id/title"  
        android:layout_width="fill_parent"  
        android:layout_height="wrap_content"  
        android:text="show tips by Toast"/>  
      
    <!--show tips by AlertDialog  -->  
    <Button   
        android:id="@+id/tishiAlart"  
        android:layout_below="@id/tishiButton"  
        android:layout_width="fill_parent"  
        android:layout_height="wrap_content"  
        android:text="show tips by AlertDialog"/>  
      
    <!--AlertDialog : Item选择,类似ListView -->  
    <Button   
        android:id="@+id/AlertItem"  
        android:layout_below="@id/tishiAlart"  
        android:layout_width="fill_parent"  
        android:layout_height="wrap_content"  
        android:text="like ListView"/>  
      
    <!--AlertDialog : Item选择,类似RadioButton  -->  
    <Button   
        android:id="@+id/AlertSingleChoice"  
        android:layout_below="@id/AlertItem"  
        android:layout_width="fill_parent"  
        android:layout_height="wrap_content"  
        android:text="Like RadioButton"/>  
      
    <!--AlertDialog : Item选择,类似CheckBox  -->  
    <Button   
        android:id="@+id/AlertCheckBox"  
        android:layout_below="@id/AlertSingleChoice"  
        android:layout_width="fill_parent"  
        android:layout_height="wrap_content"  
        android:text="Like CheckBox"/>  
      
    <!--AlertDialog : 自定义视图  -->  
    <Button   
        android:id="@+id/customView"  
        android:layout_below="@id/AlertCheckBox"  
        android:layout_width="fill_parent"  
        android:layout_height="wrap_content"  
        android:text="CustomView"/>  
  
</RelativeLayout>  

customview.xml

[html] view plaincopy
<?xml version="1.0" encoding="UTF-8"?>  
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  
    xmlns:tools="http://schemas.android.com/tools"  
    android:orientation="vertical"  
    android:layout_width="fill_parent"  
    android:layout_height="fill_parent">  
      
    <LinearLayout   
        android:orientation="horizontal"  
        android:layout_width="fill_parent"  
        android:layout_height="wrap_content">  
        <TextView   
            android:id="@+id/usernameTextView"  
            android:text="username:"  
            android:layout_width="wrap_content"  
            android:layout_height="wrap_content"/>  
        <EditText   
            android:id="@+id/usernameEdit"  
            android:layout_width="fill_parent"  
            android:layout_height="wrap_content"/>  
          
    </LinearLayout>  
      
    <LinearLayout   
        android:orientation="horizontal"  
        android:layout_width="fill_parent"  
        android:layout_height="wrap_content">  
          
        <TextView   
            android:id="@+id/passwordTextView"  
            android:text="password:"  
            android:layout_width="wrap_content"  
            android:layout_height="wrap_content"/>  
        <EditText   
            android:id="@+id/passwordEdit"  
            android:layout_width="fill_parent"  
            android:layout_height="wrap_content"/>  
          
    </LinearLayout>  
      
</LinearLayout>  
      

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