如何在android中的数组中添加按钮

Question

我是android的新用户，正在制作幻灯片益智游戏并使用eclipse。我在xml文件中创建了按钮。在java文件中，我创建了一个按钮类型的数组。现在我的问题是如何在xml中创建的数组中添加按钮文件在表格布局中...

Answer 1

Each button should have a unique ID and you can use findViewById(R.id.ButtonX) to get the buttons. Say you have 5 buttons:

Button[] buttons = new Button[5];
buttons[0] = (Button)findViewById(R.id.Button0);
buttons[1] = (Button)findViewById(R.id.Button1);
buttons[2] = (Button)findViewById(R.id.Button2);
buttons[3] = (Button)findViewById(R.id.Button3);
buttons[4] = (Button)findViewById(R.id.Button4);

Of course the IDs have to match those in the XML. You could also use an ArrayList<Button> if you need to add or remove buttons from this array. Do note that adding or removing from the array will not add or remove them from the activity.

Answer 2

Create an activity. In Eclipse there should be 2 lower tabs with one letting you graphically edit the layout. Then all you have to do is link the Java buttons with the xml buttons.

Answer 3

You can try something like this. Assuming bi,b2 b3 are the button names in the XML

ArrayList<Button> bl = new ArrayList<Button>();
bl.add(new Button("b1"));
bl.add(new Button("b2"));
bl.add(new Button("b3"));

Answer 4

I understood that: You want to create dynamic button(You create button in java code not xml). Try that way:

    Button btn1 = new Button(this);
    Button btn2 = new Button(this);
    Button btn3 = new Button(this);

    //your table name : tbl
    //you must create TableRow and add button to anyone row.And add row to table
    TableRow row1 = new TableRow(this);
    TableRow row2 = new TableRow(this);

    row1.addView(btn1);

    row2.addView(btn2);
    row2.addView(btn3);

    tbl.addView(row1);
    tbl.addView(row2);