Android的 - 更改视图点击alertdialog按钮时 [英] Android - Change View when alertdialog button is clicked

问题描述

我有一对情侣在此刻字符串列表视图。当用户选择一个它带来了一个alertdialog盒提供前往预定的选项（这将是一个出租车的应用程序）或取消。我不能工作了是如何得到它，这样当用户点击书，就需要他们所选择的信息，并加载了更多的接触信息的新观点。

I have a listview with a couple of strings in at the moment. when a user selects one it brings up an alertdialog box which gives the option to book(this is going to be a taxi app) or cancel. What i cant work out is how to get it so that when the user clicks "Book" it takes the information they've selected and loads up a new view with more contact information.

我的code目前是这样的 -

My Code is currently this -

公共类ListTaxi扩展ListActivity {
    / **当第一次创建活动调用。 * /
    公共无效的onCreate（捆绑savedInstanceState）{
        super.onCreate（savedInstanceState）;

public class ListTaxi extends ListActivity{ /** Called when the activity is first created. */ public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState);

    String[] taxi = getResources().getStringArray(R.array.taxi_array);
    setListAdapter(new ArrayAdapter<String>(this, R.layout.listtaxi, taxi));

    final ListView lv = getListView();
    lv.setTextFilterEnabled(true);

        lv.setOnItemClickListener(new OnItemClickListener() {
        public void onItemClick(AdapterView<?> a, View v, int position, long id)
       {   
           AlertDialog.Builder adb=new AlertDialog.Builder(ListTaxi.this); 
           adb.setTitle("Taxi Booking");
           adb.setMessage("You have chosen = "+lv.getItemAtPosition(position)); 
          adb.setPositiveButton("Book", null);
          adb.setNegativeButton("Cancel", null); 
          adb.show(); 
       } 
 }); 

任何帮助或指针，这将是pciated作为其最后一位非常AP $ P $我需要得到它之前几乎完成了工作。

Any help or pointers with this would be immensely appreciated as its the last bit i need to get working before its almost done.

谢谢大家。

奥利

推荐答案

您需要把 onClickListener 到你的正面按钮，将推出新的活动，通过数据到它。您code会变成这样的：

You need to put an onClickListener onto your positive button, which will launch the new activity and pass the data to it. Your code would become something like:

public class ListTaxi extends ListActivity{ /** Called when the activity is first created. */ public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    final String[] taxi = getResources().getStringArray(R.array.taxi_array);
    setListAdapter(new ArrayAdapter<String>(this, R.layout.listtaxi, taxi));

    final ListView lv = getListView();
    lv.setTextFilterEnabled(true);

    lv.setOnItemClickListener(new OnItemClickListener() {
    public void onItemClick(AdapterView<?> a, View v, int position, long id)
    {   
        final int selectedPosition = position;
        AlertDialog.Builder adb=new AlertDialog.Builder(ListTaxi.this); 
        adb.setTitle("Taxi Booking");
        adb.setMessage("You have chosen = "+lv.getItemAtPosition(position)); 
        adb.setPositiveButton("Book", new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int id) {
                Intent intent = new Intent(getApplicationContext(), NextActivity.class);
                intent.putExtra("booking",  taxi[selectedPosition];
                startActivity(intent);
            }
        });
        adb.setNegativeButton("Cancel", null); 
        adb.show(); 
    }
});

在你的目标的活动，有这样的事情：

In your target activity, have something like this:

Intent intent = getIntent();
String booking = "";
if (intent != null) {
    Bundle extras = intent.getExtras();
    if (extras != null) {
        booking = extras.getString("booking");
    }
}

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