动态添加按钮到TableRow

Question

您好，我想单击一个按钮，每次单击该按钮时都会向表行添加一个新按钮。将 3 个按钮添加到该行后，我想动态创建一个新的表行并向其添加一个新按钮。

如果单击按钮，我知道如何将带有按钮的行添加到 tableLayout 中。我不知道如何在每次单击时修改表格行，以便添加一个附加按钮。

任何建议都会非常有帮助和感激。

以下是我的代码，但这并不完美，

public class DynamicTableView extends Activity {

    TableLayout mTlayout;
    String[] mTextofButton = { "Dipak", "E", "I", "J", "L",
            "M", "G", "R", "N", "T", "H", "P",
            "K", "Y", "V" };

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        mTlayout = (TableLayout) findViewById(R.id.mTlayout);


        TableRow tr=new TableRow(this);
        for(int i=0;i<mTextofButton.length;i++){
            Button btn=new Button(this);
            btn.setText(mTextofButton[i]);
            tr.addView(btn);

        }   
        mTlayout.addView(tr);
    }
}

提前致谢。

Answer 1

使用以下代码：-

public class DynamicButtonsActivity extends Activity {

    TableLayout mTlayout;
    TableRow tr;
    String[] mTextofButton = { "D", "E", "I", "J", "L", "M", "G", "R", "N",
            "T", "H", "P", "K", "Y", "V" };

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        mTlayout = (TableLayout) findViewById(R.id.mTlayout);

        int i = 0;
        while (i < mTextofButton.length) {
            if (i % 3 == 0) {
                tr = new TableRow(this);
                mTlayout.addView(tr);
            }
            Button btn = new Button(this);
            btn.setText(mTextofButton[i]);
            btn.setId(i);
            btn.setOnClickListener(new OnClickListener() {

                @Override
                public void onClick(View v) {
                    // TODO Auto-generated method stub
                    System.out.println("v.getid is:- " + v.getId());
                }
            });
            tr.addView(btn);
            i++;
        }
    }
}

Answer 2

    int i=0;
    while(i<mTextofButton.length){
            if(i%3==0){
                TableRow tr=new TableRow(this);
                mTlayout.addView(tr);
            }
            Button btn=new Button(this);
            btn.setText(mTextofButton[i]);
            tr.addView(btn);
            i++;
    }

Answer 3

他们会使用 Button 的 onClick()，说 addNewButton() 并执行类似以下操作：

public void  addNewButton(View b)
{
        for(int i=0; i<mTextofButton.length; i+=3){
                TableRow tr=new TableRow(this);

                Button btnOne=new Button(this);
                btnOne.setText(mTextofButton[i]);
                tr.addView(btnOne);

                Button btnTwo =new Button(this);
                btnTwo.setText(mTextofButton[i+1]);
                tr.addView(btnTwo);

                Button btnThree =new Button(this);
                btnThree.setText(mTextofButton[i+2]);
                tr.addView(btnThree);
                mTlayout.addView(tr);
        }
}

但要小心您的 mTextofButton .length，意味着它应该能被3整除，否则你会得到ArrayIndexOutOfBondException。更好的方法是使用 ArrayList