出處：https://www.cnblogs.com/gzdaijie/p/5222191.html

1.寫(xiě)在前面

• Android提供了豐富的Dialog函數(shù)，本文介紹最常用的8種對(duì)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(jìn)度條、編輯、自定義等多種形式，將在第2部分介紹。
• 有時(shí)，我們希望在對(duì)話框創(chuàng)建或關(guān)閉時(shí)完成一些特定的功能，這需要復(fù)寫(xiě)Dialog的create()、show()、dismiss()等方法，將在第3部分介紹。

2.代碼示例

圖片示例

2.1 普通Dialog（圖1與圖2）

• 2個(gè)按鈕

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 設(shè)置對(duì)話框圖標(biāo)
         * @setTitle 設(shè)置對(duì)話框標(biāo)題
         * @setMessage 設(shè)置對(duì)話框消息提示
         * setXXX方法返回Dialog對(duì)象，因此可以鏈?zhǔn)皆O(shè)置屬性
         */
        final AlertDialog.Builder normalDialog = 
            new AlertDialog.Builder(MainActivity.this);
        normalDialog.setIcon(R.drawable.icon_dialog);
        normalDialog.setTitle("我是一個(gè)普通Dialog")
        normalDialog.setMessage("你要點(diǎn)擊哪一個(gè)按鈕呢?");
        normalDialog.setPositiveButton("確定", 
            new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                //...To-do
            }
        });
        normalDialog.setNegativeButton("關(guān)閉", 
            new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                //...To-do
            }
        });
        // 顯示
        normalDialog.show();
    }
}

• 3個(gè)按鈕

/* @setNeutralButton 設(shè)置中間的按鈕
 * 若只需一個(gè)按鈕，僅設(shè)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(gè)普通Dialog").setMessage("你要點(diǎn)擊哪一個(gè)按鈕呢?");
    normalDialog.setPositiveButton("按鈕1", 
        new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {
            // ...To-do
        }
    });
    normalDialog.setNeutralButton("按鈕2", 
        new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {
            // ...To-do
        }
    });
    normalDialog.setNegativeButton("按鈕3", new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {
            // ...To-do
        }
    });
    // 創(chuàng)建實(shí)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(gè)列表Dialog");
    listDialog.setItems(items, new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {
            // which 下標(biāo)從0開(kāi)始
            // ...To-do
            Toast.makeText(MainActivity.this, 
                "你點(diǎn)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(gè)單選Dialog");
    // 第二個(gè)參數(shù)是默認(rèn)選項(xiàng)，此處設(shè)置為0
    singleChoiceDialog.setSingleChoiceItems(items, 0, 
        new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {
            yourChoice = which;
        }
    });
    singleChoiceDialog.setPositiveButton("確定", 
        new DialogInterface.OnClickListener() {
        @Override
        public 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(shè)置默認(rèn)選中的選項(xiàng)，全為false默認(rèn)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(gè)多選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("確定", 
        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(diǎn)擊，設(shè)置為不可取消(false)
     * 下載等事件完成后，主動(dòng)調(diào)用函數(shù)關(guān)閉該Dialog
     */
    ProgressDialog waitingDialog= 
        new ProgressDialog(MainActivity.this);
    waitingDialog.setTitle("我是一個(gè)等待Dialog");
    waitingDialog.setMessage("等待中...");
    waitingDialog.setIndeterminate(true);
    waitingDialog.setCancelable(false);
    waitingDialog.show();
}

2.6 進(jìn)度條Dialog（圖7）

private void showProgressDialog() {
    /* @setProgress 設(shè)置初始進(jìn)度
     * @setProgressStyle 設(shè)置樣式（水平進(jìn)度條）
     * @setMax 設(shè)置進(jìn)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(gè)進(jìn)度條Dialog");
    progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
    progressDialog.setMax(MAX_PROGRESS);
    progressDialog.show();
    /* 模擬進(jìn)度增加的過(guò)程
     * 新開(kāi)一個(gè)線程，每個(gè)100ms，進(jìn)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();
                }
            }
            // 進(jìn)度達(dá)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(gè)EditView
     */
    final EditText editText = new EditText(MainActivity.this);
    AlertDialog.Builder inputDialog = 
        new AlertDialog.Builder(MainActivity.this);
    inputDialog.setTitle("我是一個(gè)輸入Dialog").setView(editText);
    inputDialog.setPositiveButton("確定", 
        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">
    <EditText
        android: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(gè)EditView，因此和圖8一樣
     * dialog_customize.xml可自定義更復(fù)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(gè)自定義Dialog");
    customizeDialog.setView(dialogView);
    customizeDialog.setPositiveButton("確定",
        new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {
            // 獲取EditView中的輸入內(nèi)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.復(fù)寫(xiě)回調(diào)函數(shù)

/* 復(fù)寫(xiě)B(tài)uilder的create和show函數(shù)，可以在Dialog顯示前實(shí)現(xiàn)必要設(shè)置
 * 例如初始化列表、默認(rèn)選項(xiàng)等
 * @create 第一次創(chuàng)建時(shí)調(diào)用
 * @show 每次顯示時(shí)調(diào)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("我是一個(gè)列表Dialog");
    listDialog.setItems(items, new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {
            // ...To-do
        }
    });
    /* @setOnDismissListener Dialog銷(xiāo)毀時(shí)調(diào)用
     * @setOnCancelListener Dialog關(guān)閉時(shí)調(diào)用
     */
    listDialog.setOnDismissListener(new DialogInterface.OnDismissListener() {
        public void onDismiss(DialogInterface dialog) {
            Toast.makeText(getApplicationContext(),
                "Dialog被銷(xiāo)毀了", 
                Toast.LENGTH_SHORT).show();
        }
    });
    listDialog.show();
}

另外可繼承Dialog類(lèi)實(shí)現(xiàn)更多除布局以外更多的動(dòng)作

setContentView(R.layout.common_dialog_layout);
        //按空白處不能取消動(dòng)畫(huà)
        setCanceledOnTouchOutside(false);
        //初始化界面控件
        initView();
        //初始化界面數(shù)據(jù)
        refreshView();
        //初始化界面控件的事件
        initEvent();