Android的AlertDialog详解
AlertDialog的构造方法全部是Protected的,所以不能直接通过new一个AlertDialog来创建出一个AlertDialog。
要创建一个AlertDialog,就要用到AlertDialog.Builder中的create()方法。
使用AlertDialog.Builder创建对话框需要了解以下几个方法:
setTitle :为对话框设置标题
setIcon :为对话框设置图标
setMessage:为对话框设置内容
setView : 给对话框设置自定义样式
setItems :设置对话框要显示的一个list,一般用于显示几个命令时
setMultiChoiceItems :用来设置对话框显示一系列的复选框
setNeutralButton :普通按钮
setPositiveButton :给对话框添加"Yes"按钮
setNegativeButton :对话框添加"No"按钮
create : 创建对话框
show :显示对话框
一、简单的AlertDialog
下面,创建一个简单的ALertDialog并显示它:
[java] package com.tianjf;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.os.Bundle;
public class Dialog_AlertDialogDemoActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Dialog alertDialog = new AlertDialog.Builder(this).
setTitle("对话框的标题").
setMessage("对话框的内容").
setIcon(R.drawable.ic_launcher).
create();
alertDialog.show();
}
}
package com.tianjf;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.os.Bundle;
public class Dialog_AlertDialogDemoActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Dialog alertDialog = new AlertDialog.Builder(this).
setTitle("对话框的标题").
setMessage("对话框的内容").
setIcon(R.drawable.ic_launcher).
create();
alertDialog.show();
}
}运行结果如下:
二、带按钮的AlertDialog
上面的例子很简单,下面我们在这个AlertDialog上面加几个Button,实现删除操作的提示对话框
[java] package com.tianjf;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.content.DialogInte易做图ce;
import android.os.Bundle;
public class Dialog_AlertDialogDemoActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Dialog alertDialog = new AlertDialog.Builder(this).
setTitle("确定删除?").
setMessage("您确定删除该条信息吗?").
setIcon(R.drawable.ic_launcher).
setPositiveButton("确定", new DialogInte易做图ce.OnClickListener() {
@Override
public void onClick(DialogInte易做图ce dialog, int which) {
// TODO Auto-generated method stub
}
}).
setNegativeButton("取消", new DialogInte易做图ce.OnClickListener() {
@Override
public void onClick(DialogInte易做图ce dialog, int which) {
// TODO Auto-generated method stub
}
}).
setNeutralButton("查看详情", new DialogInte易做图ce.OnClickListener() {
@Override
public void onClick(DialogInte易做图ce dialog, int which) {
// TODO Auto-generated method stub
}
}).
create();
&nb
补充:移动开发 , Android ,