8种android 对话框(Dialog)使用方法详解
本文汇总了android8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
publicclassMainActivityextendsActivity{ @Override protectedvoidonCreate(BundlesavedInstanceState){ super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); ButtonbuttonNormal=(Button)findViewById(R.id.button_normal); buttonNormal.setOnClickListener(newView.OnClickListener(){ @Override publicvoidonClick(Viewv){ showNormalDialog(); } }); } privatevoidshowNormalDialog(){ /*@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 */ finalAlertDialog.BuildernormalDialog= newAlertDialog.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", newDialogInterface.OnClickListener(){ @Override publicvoidonClick(DialogInterfacedialog,intwhich){ //...To-do } }); normalDialog.setNegativeButton("关闭", newDialogInterface.OnClickListener(){ @Override publicvoidonClick(DialogInterfacedialog,intwhich){ //...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 */ privatevoidshowMultiBtnDialog(){ AlertDialog.BuildernormalDialog= newAlertDialog.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", newDialogInterface.OnClickListener(){ @Override publicvoidonClick(DialogInterfacedialog,intwhich){ //...To-do } }); normalDialog.setNeutralButton("按钮2", newDialogInterface.OnClickListener(){ @Override publicvoidonClick(DialogInterfacedialog,intwhich){ //...To-do } }); normalDialog.setNegativeButton("按钮3",newDialogInterface.OnClickListener(){ @Override publicvoidonClick(DialogInterfacedialog,intwhich){ //...To-do } }); //创建实例并显示 normalDialog.show(); }
2.2列表Dialog(图3)
privatevoidshowListDialog(){ finalString[]items={"我是1","我是2","我是3","我是4"}; AlertDialog.BuilderlistDialog= newAlertDialog.Builder(MainActivity.this); listDialog.setTitle("我是一个列表Dialog"); listDialog.setItems(items,newDialogInterface.OnClickListener(){ @Override publicvoidonClick(DialogInterfacedialog,intwhich){ //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)
intyourChoice; privatevoidshowSingleChoiceDialog(){ finalString[]items={"我是1","我是2","我是3","我是4"}; yourChoice=-1; AlertDialog.BuildersingleChoiceDialog= newAlertDialog.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, newDialogInterface.OnClickListener(){ @Override publicvoidonClick(DialogInterfacedialog,intwhich){ yourChoice=which; } }); singleChoiceDialog.setPositiveButton("确定", newDialogInterface.OnClickListener(){ @Override publicvoidonClick(DialogInterfacedialog,intwhich){ 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=newArrayList<>(); privatevoidshowMultiChoiceDialog(){ finalString[]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 finalbooleaninitChoiceSets[]={false,false,false,false}; yourChoices.clear(); AlertDialog.BuildermultiChoiceDialog= newAlertDialog.Builder(MainActivity.this); multiChoiceDialog.setTitle("我是一个多选Dialog"); multiChoiceDialog.setMultiChoiceItems(items,initChoiceSets, newDialogInterface.OnMultiChoiceClickListener(){ @Override publicvoidonClick(DialogInterfacedialog,intwhich, booleanisChecked){ if(isChecked){ yourChoices.add(which); }else{ yourChoices.remove(which); } } }); multiChoiceDialog.setPositiveButton("确定", newDialogInterface.OnClickListener(){ @Override publicvoidonClick(DialogInterfacedialog,intwhich){ intsize=yourChoices.size(); Stringstr=""; for(inti=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)
privatevoidshowWaitingDialog(){ /*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 */ ProgressDialogwaitingDialog= newProgressDialog(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)
privatevoidshowProgressDialog(){ /*@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 */ finalintMAX_PROGRESS=100; finalProgressDialogprogressDialog= newProgressDialog(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 */ newThread(newRunnable(){ @Override publicvoidrun(){ intprogress=0; while(progress<MAX_PROGRESS){ try{ Thread.sleep(100); progress++; progressDialog.setProgress(progress); }catch(InterruptedExceptione){ e.printStackTrace(); } } //进度达到最大值后,窗口消失 progressDialog.cancel(); } }).start(); }
2.7编辑Dialog(图8)
privatevoidshowInputDialog(){ /*@setView装入一个EditView */ finalEditTexteditText=newEditText(MainActivity.this); AlertDialog.BuilderinputDialog= newAlertDialog.Builder(MainActivity.this); inputDialog.setTitle("我是一个输入Dialog").setView(editText); inputDialog.setPositiveButton("确定", newDialogInterface.OnClickListener(){ @Override publicvoidonClick(DialogInterfacedialog,intwhich){ 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--> <LinearLayoutxmlns: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> privatevoidshowCustomizeDialog(){ /*@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.BuildercustomizeDialog= newAlertDialog.Builder(MainActivity.this); finalViewdialogView=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", newDialogInterface.OnClickListener(){ @Override publicvoidonClick(DialogInterfacedialog,intwhich){ //获取EditView中的输入内容 EditTextedit_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 */ privatevoidshowListDialog(){ finalString[]items={"我是1","我是2","我是3","我是4"}; AlertDialog.BuilderlistDialog= newAlertDialog.Builder(MainActivity.this){ @Override publicAlertDialogcreate(){ items[0]="我是No.1"; returnsuper.create(); } @Override publicAlertDialogshow(){ items[1]="我是No.2"; returnsuper.show(); } }; listDialog.setTitle("我是一个列表Dialog"); listDialog.setItems(items,newDialogInterface.OnClickListener(){ @Override publicvoidonClick(DialogInterfacedialog,intwhich){ //...To-do } }); /*@setOnDismissListenerDialog销毁时调用 *@setOnCancelListenerDialog关闭时调用 */ listDialog.setOnDismissListener(newDialogInterface.OnDismissListener(){ publicvoidonDismiss(DialogInterfacedialog){ 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。