Question

我的布局xml看起来像

<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"   
android:id="@+id/scrollview1"
android:layout_width="match_parent"
android:layout_height="match_parent">

<LinearLayout 
android:id="@+id/linearlayout1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical">


</LinearLayout>

</ScrollView>

我正在创建radiogroup并通过代码添加radiobuttons

LinearLayout ll = (LinearLayout)findViewById(R.id.linearlayout1);           
        RadioGroup rg = new RadioGroup(this);
        rg.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT));
        rg.setOrientation(0);
        while(itr.hasNext()){
            final String drinkname = itr.next();
            System.out.println("drinkname: "+drinkname);
            RadioButton rb = new RadioButton(this);
            rb.setText(drinkname);              
            rg.addView(rb);
        }
        rg.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {

            @Override
            public void onCheckedChanged(RadioGroup group, int checkedId) {
                //group.clearCheck();

                int id = group.getCheckedRadioButtonId();
                RadioButton selectrb = (RadioButton) findViewById(id);
                System.out.println(selectrb.getText().toString());
                WebMenu.drinkname = selectrb.getText().toString();


            }
        });
        ll.addView(rg);

应该显示6个值;但它只显示3个正常，剩下的看起来像隐藏。有人可以帮我吗？

提前致谢!!

Answer 1

使用当前的RadioGroup类实现，您不能有两行RadioButtons。因此，您可以为布局设置HorizontalScrollView，并允许用户滚动查看所有RadioButtons，或者使用两个RadioGroups，每个RadioButtons包含3 LinearLayout ll = (LinearLayout)findViewById(R.id.linearlayout1); RadioGroup rg = new RadioGroup(this); RadioGroup rg2 = new RadioGroup(this); rg.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT)); rg.setOrientation(LinearLayout.HORIZONTAL); rg2.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT)); rg2.setOrientation(LinearLayout.HORIZONTAL); String [] drinks = new String [] {"Mountain Dew", "7Up", "Root Beer", "Pepsi", "Cola", "Ice Tea"}; int i = 0; while(i<drinks.length){ final String drinkname = drinks[i]; Log.i(TAG, "drinkname: "+drinkname); RadioButton rb = new RadioButton(this); rb.setText(drinkname); if(i %2==0) rg.addView(rb); else rg2.addView(rb); i++; } rg.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() { @Override public void onCheckedChanged(RadioGroup group, int checkedId) { //unselect all radios in the other RadioGroup if(rg2.getCheckedRadioButtonId()!=-1){ rg2.setOnCheckedChangeListener(null); rg2.clearCheck(); rg2.setOnCheckedChangeListener(this); } int id = group.getCheckedRadioButtonId(); RadioButton selectrb = (RadioButton) findViewById(id); if(selectrb != null){ Log.i(TAG,selectrb.getText().toString()); WebMenu.drinkname = selectrb.getText().toString(); } } }); rg2.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() { @Override public void onCheckedChanged(RadioGroup group, int checkedId) { //unselect all radios in the other RadioGroup if(rg.getCheckedRadioButtonId()!=-1){ rg.setOnCheckedChangeListener(null); rg.clearCheck(); rg.setOnCheckedChangeListener(this); } int id = group.getCheckedRadioButtonId(); RadioButton selectrb = (RadioButton) findViewById(id); if(selectrb != null){ Log.i(TAG,selectrb.getText().toString()); WebMenu.drinkname = selectrb.getText().toString(); } } }); ll.addView(rg); ll.addView(rg2);。

因此，使用您的示例（几乎没有变化），最后的解决方案可以像这样实现：

RadioGroups

你必须要小心，你的两个RadioButtons每个只跟踪3 RadioButton。它们不相互通信，不会相互影响。因此，如果您从第一行（第一个RadioGroup）中选择一个RadioGroup，您仍然可以选择第二个radioButtons，反之亦然。你必须自己管理这种情况。

编辑：管理此操作的一种方法是取消选择RadioGroup1中的所有RadioButton，当我们在RadioGroup2中选择一个{{1}}时，反之亦然。我添加了代码来做到这一点。

Android radiogroup水平对齐内容不可见

1 个答案: