入门单选按钮不能被解析为一个类型

问题描述

我想建立一个单选按钮输入的活动。我做过什么描述

但我正在逐渐单选按钮不能被解析为一个类型错误
布尔查=（（单选）查看）.isChecked（）;线。我得到的（（单选）查看）的一部分红线。我很想念？请帮助。

 包com.my.test;    进口android.os.Bundle;
    进口android.app.Activity;
    进口android.content.Intent;
    进口android.view.Menu;
    进口android.view.View;
    进口android.widget.EditText;    公共类MAIN1延伸活动{
        @覆盖
        保护无效的onCreate（捆绑savedInstanceState）{
            super.onCreate（savedInstanceState）;
            的setContentView（R.layout.main1）;
        }        公共无效onRadioButtonClicked（查看视图）{
            //是按钮现在检查？
            布尔查=（（单选）查看）.isChecked（）;
            int类型的; //存储该点击对应的单选按钮的值               开关（view.getId（））{
                            案例R.id.radio1：
                                如果（选中）
                                 一个= 3;
                                    打破;
                            案例R.id.radio2：
                                如果（选中）一= 2;
                                    打破;
                            案例R.id.radio3：
                                如果（检查）A = 1;
                                    打破;
                            案例R.id.radio4：
                                如果（检查）A = 0;
                                    打破;
                     }               意向意图=新意图（这一点，Test2.class）;
               intent.putExtra（inputValue将，一）; //通A到下一个活动    }
        }
 

解决方案

以下行添加到您的类的顶部，与其他进口沿：

 进口android.widget.RadioButton;
 

有关备查，可以自动让Eclipse由pressing CTRL-Shift-O组合（Windows）或命令 - 增加进口转向-O （苹果机）

I am trying to build a radio button input activity. I have done whatever described inhttp://developer.android.com/guide/topics/ui/controls/radiobutton.html

But I am getting "RadioButton cannot be resolved to a type" error inboolean checked = ((RadioButton) view).isChecked(); line. I am getting Red line under "((RadioButton) view)" part. What I am missing? Please help.

 package com.my.test;

    import android.os.Bundle;
    import android.app.Activity;
    import android.content.Intent;
    import android.view.Menu;
    import android.view.View;
    import android.widget.EditText;

    public class Main1 extends Activity {


        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.main1);
        }

        public void onRadioButtonClicked(View view) {
            // Is the button now checked?
            boolean checked = ((RadioButton) view).isChecked();
            int a; // store the value corresponding to  the RadioButton which is clicked

               switch(view.getId()) {
                            case R.id.radio1:
                                if (checked)
                                 a = 3;
                                    break;
                            case R.id.radio2:
                                if (checked) a = 2;
                                    break;
                            case R.id.radio3:
                                if (checked) a = 1;
                                    break;
                            case R.id.radio4:
                                if (checked) a = 0;
                                    break;
                     }

               Intent intent = new Intent(this, Test2.class);
               intent.putExtra("inputValue", a); // pass "a" to the next Activity

    }
        }

解决方案

Add the following line to the top of your class, along with the other imports:

import android.widget.RadioButton;

For future reference, you can automatically have Eclipse add the imports by pressing ctrl-shift-O (Windows) or command-shift-O (Mac)

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