Question

我以编程方式制作了3X2单选按钮。

这是我的tableLayout

    public class ToggleButtonGroupTableLayout extends TableLayout implements
    OnClickListener {

private static final String TAG = "ToggleButtonGroupTableLayout";
private RadioButton activeRadioButton;

/**
 * @param context
 */
public ToggleButtonGroupTableLayout(Context context) {
    super(context);
    // TODO Auto-generated constructor stub
}

/**
 * @param context
 * @param attrs
 */
public ToggleButtonGroupTableLayout(Context context, AttributeSet attrs) {
    super(context, attrs);
    // TODO Auto-generated constructor stub
}

@Override
public void onClick(View v) {
    final RadioButton rb = (RadioButton) v;
    if (activeRadioButton != null) {
        activeRadioButton.setChecked(false);
    }
    rb.setChecked(true);
    activeRadioButton = rb;

}

/*
 * (non-Javadoc)
 * 
 * @see android.widget.TableLayout#addView(android.view.View, int,
 * android.view.ViewGroup.LayoutParams)
 */
@Override
public void addView(View child, int index,
        android.view.ViewGroup.LayoutParams params) {
    super.addView(child, index, params);
    setChildrenOnClickListener((TableRow) child);
}


/*
 * (non-Javadoc)
 * 
 * @see android.widget.TableLayout#addView(android.view.View,
 * android.view.ViewGroup.LayoutParams)
 */
@Override
public void addView(View child, android.view.ViewGroup.LayoutParams params) {
    super.addView(child, params);
    setChildrenOnClickListener((TableRow) child);
}

private void setChildrenOnClickListener(TableRow tr) {
    final int c = tr.getChildCount();
    for (int i = 0; i < c; i++) {
        final View v = tr.getChildAt(i);
        if (v instanceof RadioButton) {
            v.setOnClickListener(this);
        }
    }
}

public int getCheckedRadioButtonId() {
    if (activeRadioButton != null) {
        return activeRadioButton.getId();
    }

    return -1;
}
 }

这是我的主要活动

  @Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    l = (LinearLayout) findViewById(R.id.mainl);

    ToggleButtonGroupTableLayout    t=new ToggleButtonGroupTableLayout(this);
    TableRow r1=new TableRow(this);
    TableRow r2=new TableRow(this);
    TableRow r3=new TableRow(this);
    b1=new RadioButton(this);
    b2=new RadioButton(this);
    b3=new RadioButton(this);
    b4=new RadioButton(this);
    b5=new RadioButton(this);
    b6=new RadioButton(this);
    b7=new RadioButton(this);
    b1.setText("b1");
    b2.setText("b2");
    b3.setText("b3");
    b4.setText("b4");
    b5.setText("b5");
    b6.setText("b6");
    b7.setText("b7");

    r1.addView(b1);
    r1.addView(b2);
    r1.addView(b3);
    r2.addView(b4);
    r2.addView(b5);
    r2.addView(b6);
    r3.addView(b7);
    t.addView(r1);
    t.addView(r2);
    t.addView(r3);
    l.addView(t);
            t.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            RadioButton rb = (RadioButton) v;
        Log.e("msg   ",     rb.getText().toString());
        Log.e("msg   ",     "clciked");

        }
    });
   }

我需要做以下两件事

如何在主要活动中找到所选单选按钮的文本。
如何在活动开始时默认选择一个单选按钮，并且它应保持互斥。

Answer 1

要查找单选按钮的文本，请使用radiobutton.getText（）方法默认情况下，为xml中的一个单选按钮选择make setChecked为该单选按钮

获取所选单选按钮，android的文本？

1 个答案: