3

在我的 android 应用程序中，当我单击文本视图时，我想显示一个包含项目列表的警报对话框。这怎么可能。请指导。

我将其编码为：

cus_name_txt = (TextView)findViewById(R.id.cus_name_txta);
    cus_name_txt.setOnClickListener(new View.OnClickListener() {
        public void onClick(View v) {
            Onclick_click1(cus_name_txt);
            // TODO Auto-generated method stub

        }
    }); 

    contact_no_txt = (TextView)findViewById(R.id.contact_no_txta);


    attend_by_txtbx = (EditText)findViewById(R.id.attend_by_txt);
    attend_by_txtbx.setText(My_Task.attend_by_txt);


    ticket_no_txt = (TextView)findViewById(R.id.ticket_no_txta);


    task_detail_txt = (TextView)findViewById(R.id.task_detail_txt);

如何通过单击 textView 获取项目列表的警报框。请指导。我会感谢你

4

4 回答 4

1

将以下代码放入onClick：textView

AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("Select Color Mode");

ListView modeList = new ListView(this);
String[] stringArray = new String[] { "Bright Mode", "Normal Mode" };
ArrayAdapter<String> modeAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, android.R.id.text1, stringArray);
modeList.setAdapter(modeAdapter);

builder.setView(modeList);
final Dialog dialog = builder.create();

dialog.show();

或者

Dialog dialog = new Dialog(**Your Context**);
  dialog.setContentView(R.layout.**Your Layout File**);
  dialog.show();

在此布局文件中，您可以根据您的要求进行布局。当您想从对话框布局文件中使用 ListView 时，您必须编写

  ListView listView = (ListView)**dialog**.findViewById(R.id.**Your ListView Id**)
于 2012-12-04T05:15:53.493 回答
1

如果要在警报对话框中加载列表之前显示进度条，请使用 AsyncTask 。

例如：

private class LoadingTask extends AsyncTask<String, Void, String> {
        @Override
        protected void onPreExecute(){
               super.onPreExecute();
               progressDialog.show();
        }

        @Override
        protected String doInBackground(String... str) {
            String response = "";
                    // Call Web Service here and return response

            response = API.getDealsByCategory(str[0], str[1]); 
                    // e.g.: above is my WebService Function which returns response in string
            return response;
        }
        @Override
        protected void onPostExecute(String result) {
            super.onPostExecute(result);
            System.out.println("result is: "+result);


            new Thread(new Runnable() {
                @Override
                public void run() {
                    progressDialog.dismiss();
                }
            }).start();

        // SHOW THE ALERT DIALOG HERE.....  
        }
    }

如下调用 AsyncTask ：

LoadingTask 任务 = new LoadingTask(); task.execute("YOUR_PARAMETER","YOUR_PARAMETER");

//================================

只需将下面的代码放在 AsyncTask 的 Post Execution 中，你就会得到你想要的。

final CharSequence[] items = {"","50","100","150","200","250","300","350","400","450","500","550","600","650","700","750","800","850","900","1000"};
        AlertDialog.Builder builder = new AlertDialog.Builder(getParent());
        builder.setTitle("Select Country");
        //builder.setI
        builder.setItems(items, new DialogInterface.OnClickListener() {
           public void onClick(DialogInterface dialog, int item) {
                //Toast.makeText(getApplicationContext(), con.get(item).getCountrName(), Toast.LENGTH_SHORT).show();
                selectDistanceTV.setText(items[item]);
                System.out.println("Item is: "+items[item]);
                /*CONTRY_ID = con.get(item).getCountryId();
                stateET.requestFocus();*/
           }
        });
        AlertDialog alert = builder.create();
        alert.show();

希望它会帮助你。

如果您需要有关如何使用 AsyncTask 的更多帮助，请参阅此处：Vogella

如有任何疑问，请评论我。

享受编码... :)

于 2012-12-04T05:22:55.290 回答
0

您可以传递字符串数组中的项目列表并将其显示在 AlertBox 中。

例如：

private void SingleChoice() {

String[] selectFruit = new String[] {"苹果","橙子","芒果"};

 Builder builder = new AlertDialog.Builder(this);  
 builder.setTitle("Single your Choice");  
 builder.setItems(selectFruit, new DialogInterface.OnClickListener() {  
   @Override  
   public void onClick(DialogInterface dialog, int which) {  
     Toast.makeText(MainActivity.this,  
         selectFruit[which] + " Selected", Toast.LENGTH_LONG)  
         .show();  
     dialog.dismiss();  
   }  
 });  
 builder.setNegativeButton("cancel",  
     new DialogInterface.OnClickListener() {  
       @Override  
       public void onClick(DialogInterface dialog, int which) {  
         dialog.dismiss();  
       }  
     });  
 AlertDialog alert = builder.create();  
 alert.show();

}

于 2012-12-04T05:21:29.453 回答
0 
button.setOnClickListener(new OnClickListener()
    {

        public void onClick(View arg0) 
        {
            new AlertDialog.Builder(MainActivity.this)

            .setSingleChoiceItems(arrClientName,0, new DialogInterface.OnClickListener()
            {
                public void onClick(DialogInterface dialog, int which) 
                {
                    name.setText(arrClientName[which]);


                }
            })
            .setPositiveButton("Ok", new DialogInterface.OnClickListener() 
            {
                       public void onClick(DialogInterface dialog, int id) 
                       {

                       }
            })
            .show();

        }
    });
于 2012-12-04T05:22:07.910 回答