Android对话框（Dialog）使用方法汇总

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。在对话框创建或关闭时完成一些特定的功能，需要复写Dialog的create()、show()、dismiss()等方法。

普通Dialog

2个按钮

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("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) {

        }
    });
    normalDialog.setNegativeButton("关闭", 
        new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {

        }
    });
    // 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("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) {

        }
    });
    normalDialog.setNeutralButton("按钮2", 
        new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {

        }
    });
    normalDialog.setNegativeButton("按钮3", new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {

        }
    });
    // 创建实例并显示
    normalDialog.show();
}

列表Dialog

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("列表Dialog");
    listDialog.setItems(items, new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {
            // which 下标从0开始
            Toast.makeText(MainActivity.this, "你点击了" + items[which], Toast.LENGTH_SHORT).show();
        }
    });
    listDialog.show();
}

单选Dialog

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("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();
}

多选Dialog

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("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();
}

等待Dialog

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("等待Dialog");
    waitingDialog.setMessage("等待中...");
    waitingDialog.setIndeterminate(true);
    waitingDialog.setCancelable(false);
    waitingDialog.show();
}

进度条Dialog

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("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();
}

编辑Dialog

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("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();
}

自定义Dialog

<!-- 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
     * dialog_customize.xml只放置了一个EditView
     * 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();
}

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) {

        }
    });
    /* @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();
}