动态添加的ListView只显示1个项目

Question

我有一个显示客户信息的活动。所有控件都是动态绘制的，因为屏幕的设计是由中央 SQL 数据库控制的。 （IE屏幕位置，可编辑且强制）因此没有XML用于设计。

到目前为止，我所做的一切都运行得很好，直到我开始尝试添加 ListView 对象来列出客户通信数据。 （即电话号码、电子邮件、传真号码或网站 URL 的列表）

此列表视图已正确添加，并且显示第一行数据，但我似乎无法再显示更多行。

这些项目将添加到表行中，然后再添加到表布局中。这可能是问题所在吗？但是，当添加 ListView 项目时，它首先添加到relativelayout 项目中，因此这应该允许显示多行？！

任何想法为什么会发生这种情况？我已经检查了数组的值，其中肯定有不止一项。

以下是 Activity onCreate 方法：

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    this.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
    model = SharedModel.getInstance();
    dbHelper = new DatabaseHelper(this);

    LinearLayout baseLayout = new LinearLayout(this);
    baseLayout.setOrientation(LinearLayout.VERTICAL);

    // add the customer name and number field.
    // NOTE: We will always require this widget regardless of dialog design fields
    tvCustomerNameNumber = new TextView(this);
    tvCustomerNameNumber.setTextSize(20);
    baseLayout.addView(tvCustomerNameNumber);

    // buttons
    RelativeLayout.LayoutParams alignBotton = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.FILL_PARENT, RelativeLayout.LayoutParams.FILL_PARENT);
    LinearLayout buttons = new LinearLayout(this);
    buttons.setOrientation(LinearLayout.HORIZONTAL);
    alignBotton.addRule(RelativeLayout.ALIGN_BOTTOM, baseLayout.getId());

    // button edit
    Button edit = new Button(this);
    edit.setId(EDIT_BUTTON_ID);
    edit.setText(dbHelper.getActivityString(dbHelper.getWritableDatabase(), model.getUserLang().getLanguage().GetCodeId(), "buttonEdit", 1001000));
    edit.setOnClickListener(new View.OnClickListener() {            
        public void onClick(View v) {
            setButtonsEnabled(false, true, true);
            setControlsEnabled(true);
        }
    });
    buttons.addView(edit);

    // button save
    Button save = new Button(this);
    save.setId(SAVE_BUTTON_ID);
    save.setText(dbHelper.getActivityString(dbHelper.getWritableDatabase(), model.getUserLang().getLanguage().GetCodeId(), "buttonSave", 1001000));
    save.setOnClickListener(new View.OnClickListener() {            
        public void onClick(View v) {
            try {
                saveCustomer();
            } catch (JSONException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
    });
    buttons.addView(save);

    // button cancel
    Button cancel = new Button(this);
    cancel.setId(CANCEL_BUTTON_ID);
    cancel.setText(dbHelper.getActivityString(dbHelper.getWritableDatabase(), model.getUserLang().getLanguage().GetCodeId(), "buttonCancel", 1001000));
    cancel.setOnClickListener(new View.OnClickListener() {          
        public void onClick(View v) {
            try {
                cancelChanges();
            } catch (JSONException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
    });
    buttons.addView(cancel);

    // add the buttons
    baseLayout.addView(buttons);

    // build up the table of controls
    TableLayout tl = new TableLayout(this);

    // get the dialog design json array for customer information
    dialogFields = model.getDialogDesignFields();   

    // reset the field type indexes
    addedIndexes = new ArrayList<Integer>();
    addedCodeIndexes = new ArrayList<Integer>();
    addedDateIndexes = new ArrayList<Integer>();
    addedTextIndexes = new ArrayList<Integer>();
    addedListIndexes = new ArrayList<Integer>();
    mandatoryIndexes = new ArrayList<Integer>();

    // for each control in the array
    for(int i=0;i<=model.getDialogDesignFields().length() - 1; i++) {
        try {
            // if the control is for the customer page
            if(dialogFields.getJSONObject(i).get("formname").equals("CustomerInformation")){
                handleField(tl, dialogFields.getJSONObject(i));
            }
        } catch (JSONException e) {
            e.printStackTrace();
        }
    }       

    // Scroll view.
    // NOTE: We will always need this widget to enable us to scroll the page
    // if too many items are added for the display size
    ScrollView sv = new ScrollView(this);
    sv.addView(tl);
    baseLayout.addView(sv);

    // set the content view
    this.setContentView(baseLayout);
    // make sure we are not in edit mode
    setButtonsEnabled(true, false, false);
    setControlsEnabled(false);
    setResult(0); 
}

现在，handleField 方法决定如何处理要添加的字段：

private void handleField(TableLayout tl, final JSONObject field) throws JSONException {

    // get field index
    int id = field.getInt("viewindex") + 1;
    final String name = field.getString("name");

    // if the name = CustomerAddressID don't do anything
    if(name.equals("CustomerAddressID") != true) {
        // if the name is not equal to CustomerCommunicationID
        if(name.equals("CustomerCommunicationID") == false) {
            if(id > 0) {
                // create and add controls
                // add the field index to the 
                addedIndexes.add(id);
                // layout parameters
                RelativeLayout.LayoutParams alignRight = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);

                // if the field is mandatory
                if(field.getInt("mandatory") == 1) {
                    TextView mandatory = new TextView(this);
                    mandatory.setText("*");
                    tl.addView(mandatory);
                    mandatoryIndexes.add(id);
                }           

                // field name description
                TextView fn = new TextView(this);
                fn.setId(id + 1000);
                fn.setText(dbHelper.getActivityString(dbHelper.getWritableDatabase(), model.getUserLang().getLanguage().GetCodeId(), name, 1000030));
                tl.addView(fn);             

                // create a table row 
                TableRow tr = new TableRow(this);
                tr.setId(id + 10000);
                tl.addView(tr);

                // create a relative layout
                RelativeLayout rl = new RelativeLayout(this);
                rl.setId(id + 100000);
                rl.setTag(field);
                rl.setBackgroundResource(R.drawable.myborder);

                // if the control is not disabled
                if(field.getInt("disabled") == 0) {

                    // so we are adding a listener
                    // if the name is code we are adding to code indexes 
                    if(name.endsWith("CODE") == true | name.equals("PreferredVisitDay")) {                      
                        addedCodeIndexes.add(id);
                    } else if (name.endsWith("DATE") == true) {
                        addedDateIndexes.add(id);                       
                    } else {
                        addedTextIndexes.add(id);
                    }           

                    // add a listener
                    rl.setOnClickListener(new View.OnClickListener() {
                        public void onClick(View v) {
                            // show the code picker for customer group
                            JSONObject field = (JSONObject) v.getTag(); 
                            try {
                                prepareDialog(field);
                            } catch (JSONException e) {
                                // TODO Auto-generated catch block
                                e.printStackTrace();
                            }                               
                        }
                    });

                    // image view           
                    ImageView iv = new ImageView(this);
                    iv.setId(id + 1000000);
                    iv.setImageResource(R.drawable.edit16x16);
                    iv.setVisibility(View.GONE);
                    alignRight.addRule(RelativeLayout.ALIGN_PARENT_RIGHT, iv.getId());
                    rl.addView(iv, alignRight);
                }                   

                tl.addView(rl);
                // fieldValue
                TextView fv = new TextView(this);
                fv.setId(id + 10000000);
                fv.setTextSize(18);
                rl.addView(fv);

            }
        } else {
            if(id > 0) {
                addedIndexes.add(id);

                // field name description
                TextView fn = new TextView(this);
                fn.setId(id + 1000);
                fn.setText(dbHelper.getActivityString(dbHelper.getWritableDatabase(), model.getUserLang().getLanguage().GetCodeId(), name, 1000030));
                tl.addView(fn);             

                // create a table row 
                TableRow tr = new TableRow(this);
                tr.setId(id + 10000);
                tl.addView(tr);

                // create a relative layout
                RelativeLayout rl = new RelativeLayout(this);
                rl.setId(id + 100000);
                rl.setTag(field);
                rl.setBackgroundResource(R.drawable.myborder);

                tl.addView(rl);
                // list view
                ListView lv = new ListView(this);
                lv.setId(id + 10000000);
                lv.setTag(field);
                lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
                    public void onItemClick(AdapterView<?> arg0, View view, int position, long id) {
                        try {
                            communicationClicked(arg0, view, position, id, field);
                        } catch (JSONException e) {
                            // TODO Auto-generated catch block
                            e.printStackTrace();
                        }           
                    }
                });
                rl.addView(lv);
            }               
        }
    }
}

使用以下代码将 ListView 项添加到第二个代码块中：

// list view
ListView lv = new ListView(this);
lv.setId(id + 10000000);
lv.setTag(field);
lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
    public void onItemClick(AdapterView<?> arg0, View view, int position, long id) {
        try {
            communicationClicked(arg0, view, position, id, field);
        } catch (JSONException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }           
    }
});
rl.addView(lv);

最后使用以下代码填充列表视图：

} else if (name.equals("CustomerCommunicationID")){
    // set communications value
    ListView lv = (ListView)findViewById(index + 10000000);
    // create an array adapter with the customer type data array
    ArrayAdapter<Communication> communicationAdapter = new ArrayAdapter<Communication>(this, R.layout.communication_menu_item, currentCustomer.getCustomerCommunications());
    // assign the my customers list control the array adapter
    lv.setAdapter(communicationAdapter);
    Log.i(TAG, "Communications Assigned");
} else {

我已经做了一个测试，并在应用程序的顶部添加了一个列表视图，并将列表适配器设置为我的数组，并且所有行都显示出来。

所以看起来它与表行有关

Answer 1

经过一些研究后，我发现将 ListView 放置在另一个可滚动项目中并不是一个好的做法。

以下链接对此进行了讨论：

Google I/O 2010 - ListView 的世界

Answer 2

不要将 ListView 放在 ScrollView 中。