8种android 对话框(Dialog)使用方法详解
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2024-02-24 10:54:16
本文汇总了android 8种对话框(dialog)使用方法,分享给大家供大家参考,具体内容如下
1.写在前面
android提供了丰富的dialog函数,本文介绍最常...
本文汇总了android 8种对话框(dialog)使用方法,分享给大家供大家参考,具体内容如下
1.写在前面
android提供了丰富的dialog函数,本文介绍最常用的8种对话框的使用方法,包括普通(包含提示消息和按钮)、列表、单选、多选、等待、进度条、编辑、自定义等多种形式,将在第2部分介绍。
有时,我们希望在对话框创建或关闭时完成一些特定的功能,这需要复写dialog的create()、show()、dismiss()等方法,将在第3部分介绍。
2.代码示例
2.1 普通dialog(图1与图2)
2个按钮
public class mainactivity extends activity { @override protected void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.activity_main); button buttonnormal = (button) findviewbyid(r.id.button_normal); buttonnormal.setonclicklistener(new view.onclicklistener() { @override public void onclick(view v) { shownormaldialog(); } }); } private void shownormaldialog(){ /* @seticon 设置对话框图标 * @settitle 设置对话框标题 * @setmessage 设置对话框消息提示 * setxxx方法返回dialog对象,因此可以链式设置属性 */ final alertdialog.builder normaldialog = new alertdialog.builder(mainactivity.this); normaldialog.seticon(r.drawable.icon_dialog); normaldialog.settitle("我是一个普通dialog") normaldialog.setmessage("你要点击哪一个按钮呢?"); normaldialog.setpositivebutton("确定", new dialoginterface.onclicklistener() { @override public void onclick(dialoginterface dialog, int which) { //...to-do } }); normaldialog.setnegativebutton("关闭", new dialoginterface.onclicklistener() { @override public void onclick(dialoginterface dialog, int which) { //...to-do } }); // 显示 normaldialog.show(); } }
3个按钮
/* @setneutralbutton 设置中间的按钮 * 若只需一个按钮,仅设置 setpositivebutton 即可 */ private void showmultibtndialog(){ alertdialog.builder normaldialog = new alertdialog.builder(mainactivity.this); normaldialog.seticon(r.drawable.icon_dialog); normaldialog.settitle("我是一个普通dialog").setmessage("你要点击哪一个按钮呢?"); normaldialog.setpositivebutton("按钮1", new dialoginterface.onclicklistener() { @override public void onclick(dialoginterface dialog, int which) { // ...to-do } }); normaldialog.setneutralbutton("按钮2", new dialoginterface.onclicklistener() { @override public void onclick(dialoginterface dialog, int which) { // ...to-do } }); normaldialog.setnegativebutton("按钮3", new dialoginterface.onclicklistener() { @override public void onclick(dialoginterface dialog, int which) { // ...to-do } }); // 创建实例并显示 normaldialog.show(); }
2.2 列表dialog(图3)
private void showlistdialog() { final string[] items = { "我是1","我是2","我是3","我是4" }; alertdialog.builder listdialog = new alertdialog.builder(mainactivity.this); listdialog.settitle("我是一个列表dialog"); listdialog.setitems(items, new dialoginterface.onclicklistener() { @override public void onclick(dialoginterface dialog, int which) { // which 下标从0开始 // ...to-do toast.maketext(mainactivity.this, "你点击了" + items[which], toast.length_short).show(); } }); listdialog.show(); }
2.3 单选dialog(图4)
int yourchoice; private void showsinglechoicedialog(){ final string[] items = { "我是1","我是2","我是3","我是4" }; yourchoice = -1; alertdialog.builder singlechoicedialog = new alertdialog.builder(mainactivity.this); singlechoicedialog.settitle("我是一个单选dialog"); // 第二个参数是默认选项,此处设置为0 singlechoicedialog.setsinglechoiceitems(items, 0, new dialoginterface.onclicklistener() { @override public void onclick(dialoginterface dialog, int which) { yourchoice = which; } }); singlechoicedialog.setpositivebutton("确定", new dialoginterface.onclicklistener() { @override public void onclick(dialoginterface dialog, int which) { if (yourchoice != -1) { toast.maketext(mainactivity.this, "你选择了" + items[yourchoice], toast.length_short).show(); } } }); singlechoicedialog.show(); }
2.4 多选dialog(图5)
arraylist<integer> yourchoices = new arraylist<>(); private void showmultichoicedialog() { final string[] items = { "我是1","我是2","我是3","我是4" }; // 设置默认选中的选项,全为false默认均未选中 final boolean initchoicesets[]={false,false,false,false}; yourchoices.clear(); alertdialog.builder multichoicedialog = new alertdialog.builder(mainactivity.this); multichoicedialog.settitle("我是一个多选dialog"); multichoicedialog.setmultichoiceitems(items, initchoicesets, new dialoginterface.onmultichoiceclicklistener() { @override public void onclick(dialoginterface dialog, int which, boolean ischecked) { if (ischecked) { yourchoices.add(which); } else { yourchoices.remove(which); } } }); multichoicedialog.setpositivebutton("确定", new dialoginterface.onclicklistener() { @override public void onclick(dialoginterface dialog, int which) { int size = yourchoices.size(); string str = ""; for (int i = 0; i < size; i++) { str += items[yourchoices.get(i)] + " "; } toast.maketext(mainactivity.this, "你选中了" + str, toast.length_short).show(); } }); multichoicedialog.show(); }
2.5 等待dialog(图6)
private void showwaitingdialog() { /* 等待dialog具有屏蔽其他控件的交互能力 * @setcancelable 为使屏幕不可点击,设置为不可取消(false) * 下载等事件完成后,主动调用函数关闭该dialog */ progressdialog waitingdialog= new progressdialog(mainactivity.this); waitingdialog.settitle("我是一个等待dialog"); waitingdialog.setmessage("等待中..."); waitingdialog.setindeterminate(true); waitingdialog.setcancelable(false); waitingdialog.show(); }
2.6 进度条dialog(图7)
private void showprogressdialog() { /* @setprogress 设置初始进度 * @setprogressstyle 设置样式(水平进度条) * @setmax 设置进度最大值 */ final int max_progress = 100; final progressdialog progressdialog = new progressdialog(mainactivity.this); progressdialog.setprogress(0); progressdialog.settitle("我是一个进度条dialog"); progressdialog.setprogressstyle(progressdialog.style_horizontal); progressdialog.setmax(max_progress); progressdialog.show(); /* 模拟进度增加的过程 * 新开一个线程,每个100ms,进度增加1 */ new thread(new runnable() { @override public void run() { int progress= 0; while (progress < max_progress){ try { thread.sleep(100); progress++; progressdialog.setprogress(progress); } catch (interruptedexception e){ e.printstacktrace(); } } // 进度达到最大值后,窗口消失 progressdialog.cancel(); } }).start(); }
2.7 编辑dialog(图8)
private void showinputdialog() { /*@setview 装入一个editview */ final edittext edittext = new edittext(mainactivity.this); alertdialog.builder inputdialog = new alertdialog.builder(mainactivity.this); inputdialog.settitle("我是一个输入dialog").setview(edittext); inputdialog.setpositivebutton("确定", new dialoginterface.onclicklistener() { @override public void onclick(dialoginterface dialog, int which) { toast.maketext(mainactivity.this, edittext.gettext().tostring(), toast.length_short).show(); } }).show(); }
2.8 自定义dialog(图9)
<!-- res/layout/dialog_customize.xml--> <!-- 自定义view --> <linearlayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="match_parent" android:layout_height="match_parent"> <edittext android:id="@+id/edit_text" android:layout_width="match_parent" android:layout_height="wrap_content" /> </linearlayout> private void showcustomizedialog() { /* @setview 装入自定义view ==> r.layout.dialog_customize * 由于dialog_customize.xml只放置了一个editview,因此和图8一样 * dialog_customize.xml可自定义更复杂的view */ alertdialog.builder customizedialog = new alertdialog.builder(mainactivity.this); final view dialogview = layoutinflater.from(mainactivity.this) .inflate(r.layout.dialog_customize,null); customizedialog.settitle("我是一个自定义dialog"); customizedialog.setview(dialogview); customizedialog.setpositivebutton("确定", new dialoginterface.onclicklistener() { @override public void onclick(dialoginterface dialog, int which) { // 获取editview中的输入内容 edittext edit_text = (edittext) dialogview.findviewbyid(r.id.edit_text); toast.maketext(mainactivity.this, edit_text.gettext().tostring(), toast.length_short).show(); } }); customizedialog.show(); }
3.复写回调函数
/* 复写builder的create和show函数,可以在dialog显示前实现必要设置 * 例如初始化列表、默认选项等 * @create 第一次创建时调用 * @show 每次显示时调用 */ private void showlistdialog() { final string[] items = { "我是1","我是2","我是3","我是4" }; alertdialog.builder listdialog = new alertdialog.builder(mainactivity.this){ @override public alertdialog create() { items[0] = "我是no.1"; return super.create(); } @override public alertdialog show() { items[1] = "我是no.2"; return super.show(); } }; listdialog.settitle("我是一个列表dialog"); listdialog.setitems(items, new dialoginterface.onclicklistener() { @override public void onclick(dialoginterface dialog, int which) { // ...to-do } }); /* @setondismisslistener dialog销毁时调用 * @setoncancellistener dialog关闭时调用 */ listdialog.setondismisslistener(new dialoginterface.ondismisslistener() { public void ondismiss(dialoginterface dialog) { toast.maketext(getapplicationcontext(), "dialog被销毁了", toast.length_short).show(); } }); listdialog.show(); }
以上就是本文的全部内容,希望对大家的学习有所帮助。