在onClick事件后创建对话框

Question

嗨，我正在第一次使用对话框工作。 我想创建一个对话框，在列表视图中的项目被点击后：

String[] listItems = {"Colour", "Font Size",}; 
    ListView lv = (ListView) findViewById(R.id.settings_list); 

    lv.setAdapter(new ArrayAdapter<String> 
    (this, android.R.layout.simple_list_item_1, listItems)); 

    lv.setOnItemClickListener(new OnItemClickListener() 
    { 
     public void onItemClick(AdapterView<?> parent, View 
       view, int position, long id) 
     { 
      String[] listItems = {"Colour", "Font Size",}; 
      if(listItems[position].equals("Font Size")) 
      { 


        public dialog onCreateDialog(Bundle savedInstanceState) 
        { 
         AlertDialog.Builder builder = new AlertDialog.Builder(getActivity()); 
         builder.setTitle("Choose Font Size"); 
        } 



      } 

     } 
    }); 

我会在onCreateDialog（捆绑savedInstanceState） 的Eclipse想要一个错误;围绕Bundle savedInstanceState，但developer.android说不然。 任何提示？

Answer 1

调用此方法我n您的onItemClick方法：

public void showMyCustomDialog(Context context, String title, String message) 
    { 
     final Dialog dialog = new Dialog(context); 
     dialog.requestWindowFeature(Window.FEATURE_NO_TITLE); 
     //tell the Dialog to use the customalertdialog.xml as it's layout description 
     dialog.setContentView(R.layout.customalertdialog); 
     TextView titleText = (TextView) dialog.findViewById(R.id.txtTitleAlertDialog); 
     titleText.setText(title); 
     TextView txt = (TextView) dialog.findViewById(R.id.txtAlertDialog); 
     txt.setText(message); 
     Button dialogButton = (Button) dialog.findViewById(R.id.buttonAlertDialogCancel); 
     dialogButton.setText("OK"); 
     dialogButton.setOnClickListener(new View.OnClickListener() 
     { 
      @Override 
      public void onClick(View v) { 
       dialog.dismiss(); 
      } 
     }); 
     dialog.show(); 
    } 

类似下面：

lv.setOnItemClickListener(new OnItemClickListener() 
    { 
     public void onItemClick(AdapterView<?> parent, View 
       view, int position, long id) 
     { 
      String[] listItems = {"Colour", "Font Size",}; 
      if(listItems[position].equals("Font Size")) 
      { 
        public dialog onCreateDialog(Bundle savedInstanceState) 
        { 
         showMyCustomDialog(Context context, String title, String message) // pass title, message and activity context in this method. 
        } 
      } 
     } 
    }); 

希望这将有助于。

Answer 2

移动

public dialog onCreateDialog(Bundle savedInstanceState) { 
    AlertDialog.Builder builder = new AlertDialog.Builder(getActivity()); 
    builder.setTitle("Choose Font Size"); 
} 

INT类范围，并从onItemClick

Answer 3

调用它只是使用

public void onItemClick(AdapterView<?> parent, View 
      view, int position, long id) 
    { 
     String[] listItems = {"Colour", "Font Size",}; 
     if(listItems[position].equals("Font Size")) 
     { 


        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity()); 
        builder.setTitle("Choose Font Size").show(); 


     } 

    } 

Answer 4

试试这个

String[] listItems = {"Colour", "Font Size",}; 
ListView lv = (ListView) findViewById(R.id.settings_list); 

lv.setAdapter(new ArrayAdapter<String> 
(this, android.R.layout.simple_list_item_1, listItems)); 

lv.setOnItemClickListener(new OnItemClickListener() 
{ 
    public void onItemClick(AdapterView<?> parent, View 
      view, int position, long id) 
    { 
     String[] listItems = {"Colour", "Font Size",}; 
     if(listItems[position].equals("Font Size")) 
     { 


      AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(
      getApplicationContext()); 

      // set title 
      alertDialogBuilder.setTitle("Choose Font Size"); 

      //create alert dialog 
      AlertDialog alertDialog = alertDialogBuilder.create(); 

      // show it 
      alertDialog.show(); 

     } 

    } 
});