1.寫在前面

??? Android提供了豐富的Dialog函數，本文介紹最常用的8種對話框的使用方法，包括普通（包含提示消息和按鈕）、列表、單選、多選、等待、進度條、編輯、自定義等多種形式，將在第2部分介紹。
??? 有時，我們希望在對話框創建或關閉時完成一些特定的功能，這需要復寫Dialog的create()、show()、dismiss()等方法，將在第3部分介紹。

2.代碼示例

2.1 普通Dialog(圖1和圖2)

2個按鈕

public class MainActivity extends Activity {@Overrideprotected 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() {@Overridepublic void onClick(View v) {showNormalDialog();}});}private void showNormalDialog(){/* @setIcon 設置對話框圖標* @setTitle 設置對話框標題* @setMessage 設置對話框消息提示* setXXX方法返回Dialog對象，因此可以鏈式設置屬性*/final AlertDialog.Builder normalDialog = new AlertDialog.Builder(MainActivity.this);normalDialog.setIcon(R.drawable.icon_dialog);normalDialog.setTitle("我是一個普通Dialog")normalDialog.setMessage("你要點擊哪一個按鈕呢?");normalDialog.setPositiveButton("確定", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {//...To-do }});normalDialog.setNegativeButton("關閉", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {//...To-do }});// 顯示 normalDialog.show();} }

3個按鈕

/* @setNeutralButton 設置中間的按鈕* 若只需一個按鈕，僅設置 setPositiveButton 即可*/ private void showMultiBtnDialog(){AlertDialog.Builder normalDialog = new AlertDialog.Builder(MainActivity.this);normalDialog.setIcon(R.drawable.icon_dialog);normalDialog.setTitle("我是一個普通Dialog").setMessage("你要點擊哪一個按鈕呢?");normalDialog.setPositiveButton("按鈕1", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {// ...To-do }});normalDialog.setNeutralButton("按鈕2", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {// ...To-do }});normalDialog.setNegativeButton("按鈕3", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {// ...To-do }});// 創建實例并顯示 normalDialog.show(); }

2.2 列表Dialog(圖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("我是一個列表Dialog");listDialog.setItems(items, new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {// which 下標從0開始// ...To-doToast.makeText(MainActivity.this, "你點擊了" + items[which], Toast.LENGTH_SHORT).show();}});listDialog.show(); }

2.3 單選Dialog(圖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("我是一個單選Dialog");// 第二個參數是默認選項，此處設置為0singleChoiceDialog.setSingleChoiceItems(items, 0, new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {yourChoice = which;}});singleChoiceDialog.setPositiveButton("確定", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {if (yourChoice != -1) {Toast.makeText(MainActivity.this, "你選擇了" + items[yourChoice], Toast.LENGTH_SHORT).show();}}});singleChoiceDialog.show(); }

2.4 多選Dialog(圖5)

ArrayList<Integer> yourChoices = new ArrayList<>(); private void showMultiChoiceDialog() {final String[] items = { "我是1","我是2","我是3","我是4" };// 設置默認選中的選項，全為false默認均未選中final boolean initChoiceSets[]={false,false,false,false};yourChoices.clear();AlertDialog.Builder multiChoiceDialog = new AlertDialog.Builder(MainActivity.this);multiChoiceDialog.setTitle("我是一個多選Dialog");multiChoiceDialog.setMultiChoiceItems(items, initChoiceSets,new DialogInterface.OnMultiChoiceClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which,boolean isChecked) {if (isChecked) {yourChoices.add(which);} else {yourChoices.remove(which);}}});multiChoiceDialog.setPositiveButton("確定", new DialogInterface.OnClickListener() {@Overridepublic 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, "你選中了" + str, Toast.LENGTH_SHORT).show();}});multiChoiceDialog.show(); }

2.5 等待Dialog(圖6)

private void showWaitingDialog() {/* 等待Dialog具有屏蔽其他控件的交互能力* @setCancelable 為使屏幕不可點擊，設置為不可取消(false)* 下載等事件完成后，主動調用函數關閉該Dialog*/ProgressDialog waitingDialog= new ProgressDialog(MainActivity.this);waitingDialog.setTitle("我是一個等待Dialog");waitingDialog.setMessage("等待中...");waitingDialog.setIndeterminate(true);waitingDialog.setCancelable(false);waitingDialog.show(); }

2.6 進度條Dialog(圖7)

private void showProgressDialog() {/* @setProgress 設置初始進度* @setProgressStyle 設置樣式（水平進度條）* @setMax 設置進度最大值*/final int MAX_PROGRESS = 100;final ProgressDialog progressDialog = new ProgressDialog(MainActivity.this);progressDialog.setProgress(0);progressDialog.setTitle("我是一個進度條Dialog");progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);progressDialog.setMax(MAX_PROGRESS);progressDialog.show();/* 模擬進度增加的過程* 新開一個線程，每個100ms，進度增加1*/new Thread(new Runnable() {@Overridepublic void run() {int progress= 0;while (progress < MAX_PROGRESS){try {Thread.sleep(100);progress++;progressDialog.setProgress(progress);} catch (InterruptedException e){e.printStackTrace();}}// 進度達到最大值后，窗口消失 progressDialog.cancel();}}).start(); }

2.7 編輯Dialog(圖8)

private void showInputDialog() {/*@setView 裝入一個EditView*/final EditText editText = new EditText(MainActivity.this);AlertDialog.Builder inputDialog = new AlertDialog.Builder(MainActivity.this);inputDialog.setTitle("我是一個輸入Dialog").setView(editText);inputDialog.setPositiveButton("確定", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {Toast.makeText(MainActivity.this,editText.getText().toString(), Toast.LENGTH_SHORT).show();}}).show(); }

2.8 自定義Dialog(圖9)

<!-- res/layout/dialog_customize.xml--> <!-- 自定義View --> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:orientation="vertical"android:layout_width="match_parent"android:layout_height="match_parent"><EditTextandroid:id="@+id/edit_text"android:layout_width="match_parent"android:layout_height="wrap_content" /> </LinearLayout>

?

private void showCustomizeDialog() {/* @setView 裝入自定義View ==> R.layout.dialog_customize* 由于dialog_customize.xml只放置了一個EditView，因此和圖8一樣* dialog_customize.xml可自定義更復雜的View*/AlertDialog.Builder customizeDialog = new AlertDialog.Builder(MainActivity.this);final View dialogView = LayoutInflater.from(MainActivity.this).inflate(R.layout.dialog_customize,null);customizeDialog.setTitle("我是一個自定義Dialog");customizeDialog.setView(dialogView);customizeDialog.setPositiveButton("確定",new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {// 獲取EditView中的輸入內容EditText edit_text = (EditText) dialogView.findViewById(R.id.edit_text);Toast.makeText(MainActivity.this,edit_text.getText().toString(),Toast.LENGTH_SHORT).show();}});customizeDialog.show(); }

我們經常需要進行自定義Dialog，使用上面的AlertDialog.Builder類在處理背景的時候，靈活性不強。筆者推薦使用Dialog類進行窗口定義：

Dialog dialog = new Dialog(getActivity()); dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);//無標題 View dialogView = LayoutInflater.from(MainActivity.this).inflate(R.layout.dialog_customize,null); dialog.setContentView(dialogView); dialog.getWindow().setBackgroundDrawableResource(android.R.color.transparent);//設置背景透明 mDialog.show();

上面使用了setBackgroundDrawableResource設置透明背景，如果是通過AlertDialog.Builder實例的getWindow().setBackgroundDrawableResource()設置的話是沒有效果的。

3 復寫回調函數

/* 復寫Builder的create和show函數，可以在Dialog顯示前實現必要設置* 例如初始化列表、默認選項等* @create 第一次創建時調用* @show 每次顯示時調用*/ 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){@Overridepublic AlertDialog create() {items[0] = "我是No.1";return super.create();}@Overridepublic AlertDialog show() {items[1] = "我是No.2";return super.show();}};listDialog.setTitle("我是一個列表Dialog");listDialog.setItems(items, new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {// ...To-do }});/* @setOnDismissListener Dialog銷毀時調用* @setOnCancelListener Dialog關閉時調用*/listDialog.setOnDismissListener(new DialogInterface.OnDismissListener() {public void onDismiss(DialogInterface dialog) {Toast.makeText(getApplicationContext(),"Dialog被銷毀了", Toast.LENGTH_SHORT).show();}});listDialog.show(); }

?4 方法介紹

dismiss()

　　AlertDialog.Builder對話框沒有類似finish()或者dismiss()這樣的關閉窗口方法,，但是他的父類具有這樣的方法。可以通過他的父類，關閉對話框

AlertDialog.Builder builder = new AlertDialog.Builder(this); AlertDialog dialog = builder.show(); dialog.dismiss();

?

?

原文連接：Android的8種對話框

?

總結

以上是生活随笔為你收集整理的【Android】Android 8种对话框(Dialog)的全部內容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網站內容還不錯，歡迎將生活随笔推薦給好友。