Question

我在我的活动中加入了alertdialog。

如果我点击Yes，它应转移到下一个活动，如果我点击No，它应移至另一个活动。

但是当我这样做时dialog甚至没有出现。这是我的代码。有可能这样做吗？任何人都可以提供帮助。但是当我点击“否”时，我只调用finish()，它正在工作。

以下是代码：

            final Button submitCustomer = (Button) findViewById(R.id.submit_customer);



        submitCustomer.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

                confirmRemoveOrder();

            }
        });




            private void confirmRemoveOrder() {

        new AlertDialog.Builder(this)
                .setTitle("Confirm")
                .setMessage("Are you sure you want to cancel this order ?")
                .setIcon(android.R.drawable.ic_dialog_alert)
                .setPositiveButton("Yes", new DialogInterface.OnClickListener() {

                    public void onClick(DialogInterface dialog, int whichButton) {
                        deleteOrder();
                    }
                })
                .setNegativeButton("No",  new DialogInterface.OnClickListener() {

                    public void onClick(DialogInterface dialog, int whichButton) {
                        createCustomer();
                    }
                });



    }







}

Answer 1

使用以下代码创建public static void main(String args[]) { String s = ""; // Sample JSON to be parsed JSONParser parser = new JSONParser(); JSONObject obj = null; try { obj = (JSONObject) parser.parse(s); @SuppressWarnings("unchecked") List<String> parameterKeys = new ArrayList<String>(obj.keySet()); List<String> result = null; List<String> keys = new ArrayList<>(); for (String str : parameterKeys) { keys.add(str); result = this.addNestedKeys(obj, keys, str); } System.out.println(result.toString()); } catch (ParseException e) { e.printStackTrace(); } } public static List<String> addNestedKeys(JSONObject obj, List<String> keys, String key) { if (isNestedJsonAnArray(obj.get(key))) { JSONArray array = (JSONArray) obj.get(key); for (int i = 0; i < array.length(); i++) { try { JSONObject arrayObj = (JSONObject) array.get(i); List<String> list = new ArrayList<>(arrayObj.keySet()); for (String s : list) { putNestedKeysToList(keys, key, s); addNestedKeys(arrayObj, keys, s); } } catch (JSONException e) { LOG.error("", e); } } } else if (isNestedJsonAnObject(obj.get(key))) { JSONObject arrayObj = (JSONObject) obj.get(key); List<String> nestedKeys = new ArrayList<>(arrayObj.keySet()); for (String s : nestedKeys) { putNestedKeysToList(keys, key, s); addNestedKeys(arrayObj, keys, s); } } return keys; } private static void putNestedKeysToList(List<String> keys, String key, String s) { if (!keys.contains(key + Constants.JSON_KEY_SPLITTER + s)) { keys.add(key + Constants.JSON_KEY_SPLITTER + s); } } private static boolean isNestedJsonAnObject(Object object) { boolean bool = false; if (object instanceof JSONObject) { bool = true; } return bool; } private static boolean isNestedJsonAnArray(Object object) { boolean bool = false; if (object instanceof JSONArray) { bool = true; } return bool; }：

您忘记添加：

<table>
<colgroup>
    <col style="width: 25%">
    <col style="width: 25%">
    <col style="width: 25%">
    <col style="width: 25%">
</colgroup>
<thead>
<tr>
    <th>User Id</th>
    <th>User Name</th>
    <th>Date</th>
    <th>Value</th>
</tr>
</thead>
<tr ng-repeat="obj in jsonArray">
    <td align="middle">{{ obj.userId }}</td>
    <td align="middle">{{ obj.username }}</td>
    <td align="middle">{{ obj.date | date: 'yyyy-MM-dd' }}</td>
    <td align="middle">{{ obj.value }}</td>
</tr>
</table>

创建对话框完整代码：

AlertDialog

在转到另一个活动之前，请不要忘记AlertDialog alert = dialog.create(); alert.show();对话框。

参考： AlertDialog Documentation

Answer 2

您只是对ENUM(Admin,normal_user) UNIQUE的 .show(); 方法进行了操作，以显示您的AlertDialog.Builder()

如下所示进行更改

<强> CODE

AlertDialog.Builder()

同时从private void confirmRemoveOrder() { new AlertDialog.Builder(this) .setTitle("Confirm") .setMessage("Are you sure you want to cancel this order ?") .setIcon(android.R.drawable.ic_dialog_alert) .setPositiveButton("Yes", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int whichButton) { deleteOrder(); } }) .setNegativeButton("No", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int whichButton) { createCustomer(); } }) .show(); }中将ClickListener中的一个submitCustomer移除至已设置两次clickListener到submitCustomer

Answer 3

要显示AlertDialog，您需要执行更多步骤。

AlertDialog alertDialog = new AlertDialog.Builder(this)
        .setTitle("Confirm")
        // add the rest of your setXYZ() methods here
        .create(); // this will create your AlertDialog object.
alertDialog.show(); // and this displays it!

Answer 4

您只需为alertDialog

添加.show（）

new AlertDialog.Builder(this)
            .setTitle("Confirm")
            .setMessage("Are you sure you want to cancel this order ?")
            .setIcon(android.R.drawable.ic_dialog_alert)
            .setPositiveButton("Yes", new DialogInterface.OnClickListener() {

                public void onClick(DialogInterface dialog, int whichButton) {
                    deleteOrder();
                }
            })
            .setNegativeButton("No",  new DialogInterface.OnClickListener() {

                public void onClick(DialogInterface dialog, int whichButton) {
                    createCustomer();
                }
            }).show();

只需添加它即可解决您的问题。

显示提醒并转到下一个活动

4 个答案: