自定義對(duì)話框-課件

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利用AlertDialog.builder實(shí)現(xiàn)自定義對(duì)話框

本節(jié)教學(xué)目標(biāo)自定義對(duì)話框Dialog的實(shí)現(xiàn)DialogAndroid中對(duì)話框主要有：普通對(duì)話框、選項(xiàng)對(duì)話框、單選多選對(duì)話框、進(jìn)度對(duì)話框、日期對(duì)話框、時(shí)間對(duì)話框等在程序中可以通過方法onCreateDialog

來完成對(duì)話框的創(chuàng)建，調(diào)用showDialog

方法傳入對(duì)話框的id來顯示指定對(duì)話框關(guān)閉對(duì)話框可用dismiss方法實(shí)現(xiàn)，也可以調(diào)用removeDialog

方法來徹底釋放對(duì)話框onDismissListener

方法可在關(guān)閉對(duì)話框時(shí)執(zhí)行一些特定工作Dialog常用普通對(duì)話框

AlertDialog:功能最豐富、實(shí)際應(yīng)用最廣。它提供了方法來生成4種預(yù)定義對(duì)話框，帶消息和按鈕；帶列表和按鈕；帶單選列表項(xiàng)和按鈕；帶多選列表項(xiàng)和按鈕，此外，它也可創(chuàng)建界面自定義的對(duì)話框。Dialog使用AlertDialog創(chuàng)建對(duì)話框的步驟1.創(chuàng)建AlertDialog.Builder對(duì)象，該對(duì)象是AlertDialog的創(chuàng)建器2.調(diào)用AlertDialog.Builder的方法為對(duì)話框設(shè)置圖標(biāo)、標(biāo)題、內(nèi)容等3.調(diào)用AlertDialog.Builder的create()方法創(chuàng)建AlertDialog對(duì)話框4.調(diào)用AlertDialog的show（）方法顯示對(duì)話框課堂練習(xí)：自定義對(duì)話框1.主界面布局及按鍵監(jiān)聽響應(yīng)Buttonbutton1=(Button)findViewById(R.id.button1);button1.setOnClickListener(new

OnClickListener(){public

void

onClick(Viewv){//TODOAuto-generatedmethodstubshowDialog(0);}});2.添加onCreateDialog(intid)方法右擊類名->source->override/Implementmethods…/選中onCreateDialog方法@OverrideprotectedDialogonCreateDialog(intid){//TODOAuto-generatedmethodstub

switch(id) {case0:returncreatedialog0();

case1:return

createdialoglogin();

case2:return

createdialogprocess();

case3:return

createdialogtimepicer();

default:returncreatedialog0();} //returnsuper.onCreateDialog(id);}4.自定義對(duì)話框privateDialogcreatedialoglogin(){AlertDialog.Builder

builderlogin=new

AlertDialog.Builder(this);LayoutInflater

inflater=LayoutInflater.from(this);Viewmyview=inflater.inflate(R.layout.dialoglogin,null);builderlogin.setView(myview);builderlogin.setPositiveButton("ok",new

DialogInterface.OnClickListener(){public

void

onClick(DialogInterfacedialog,intwhich){//TODOAuto-generatedmethodstubsetTitle("ok");}});return

builderlogin.create();}LayoutInflater

myinflater=(LayoutInfl