Question

我在我的TableLayout中放置了60个按钮，这些按钮超出了屏幕，所以我需要滚动来显示剩余的按钮。我试过这段代码，但应用程序无效。

protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_main);
      TableLayout tableLayout;
      tableLayout = (TableLayout) findViewById(R.id.table_layout);
      TableRow tr;
      int buttonNumber = 0;
      for (int i =0;i<30;i++)
      {
         tr = new TableRow(this);
         for (int j =0;j<2;j++)
         {
            buttonNumber++;
            final Button btn = new Button(this);
            btn.setText("Button" + (buttonNumber));
            btn.setTag(buttonNumber);
            btn.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT,TableRow.LayoutParams.MATCH_PARENT,1));
                btn.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {

                }
            });
                tr.addView(btn);

         }
                tableLayout.addView(tr);
     }
            ScrollView sv = new ScrollView(this);
            sv.addView(tableLayout);
            super.setContentView(sv);
}

如何以编程方式创建可滚动的TableLayout？

Answer 1

有几个解决方案，主要问题是您多次调用setContentView()，而super.

一次

最好的方法是删除 ScrollView代码：

ScrollView sv = new ScrollView(this);
sv.addView(tableLayout);
super.setContentView(sv);

并将其直接添加到布局文件R.layout.activity_main中，应该这样做。

Answer 2

// try this way,hope this will help you...

protected void onCreate(Bundle savedInstanceState) {
   super.onCreate(savedInstanceState);
   TableLayout tableLayout = new TableLayout(this);
   int buttonNumber = 0;
        for (int i =0;i<30;i++)
        {
            TableRow tr = new TableRow(this);
            for (int j =0;j<2;j++)
            {
                buttonNumber++;
                final Button btn = new Button(this);
                btn.setText("Button" + (buttonNumber));
                btn.setTag(buttonNumber);
                btn.setLayoutParams(new TableRow.LayoutParams(0,TableRow.LayoutParams.MATCH_PARENT,1f));
                btn.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View view) {
                        Toast.makeText(MainActivity.this,String.valueOf((Integer)view.getTag()),Toast.LENGTH_SHORT).show();
                    }
                });
                tr.addView(btn);

            }
            tableLayout.addView(tr);
        }
        ScrollView sv = new ScrollView(this);
        sv.addView(tableLayout);
        setContentView(sv);
}

![enter image description here][1]
[1]: http://i.stack.imgur.com/3qLk1.png

以编程方式Scrollable TableLayout

2 个答案: