CheckBox控件及OnCheckedChangeListener监听器的使用，RadioGroup及RadioButton的使用

谁践踏了优雅 2022-08-04 15:33 177阅读 0赞

<pre name="code" class="java">package com.ashzheng.testcodingke;
    
    import android.app.Activity;
    import android.support.v7.app.AppCompatActivity;
    import android.os.Bundle;
    import android.view.Menu;
    import android.view.MenuItem;
    import android.widget.CheckBox;
    import android.widget.CompoundButton;
    import android.widget.Toast;
    
    public class Main2Activity extends Activity implements CompoundButton.OnCheckedChangeListener{
    
        private CheckBox cb1, cb2, cb3;
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main2);
    
            cb1 = (CheckBox) findViewById(R.id.checkBox1);
            cb2 = (CheckBox) findViewById(R.id.checkBox2);
            cb3 = (CheckBox) findViewById(R.id.checkBox3);
    
            cb1.setOnCheckedChangeListener(this);
            cb2.setOnCheckedChangeListener(this);
            cb3.setOnCheckedChangeListener(this);
        }
    
        @Override
        public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
            switch (buttonView.getId()){
                case R.id.checkBox1:
                    if(isChecked)
                         Toast.makeText(this, "你选定了CheckBox1", Toast.LENGTH_SHORT).show();
                    else
                        Toast.makeText(this, "你取消了CheckBox1", Toast.LENGTH_SHORT).show();
                    break;
                case R.id.checkBox2:
                    if(isChecked)
                        Toast.makeText(this, "你选定了CheckBox2", Toast.LENGTH_SHORT).show();
                    else
                        Toast.makeText(this, "你取消了CheckBox2", Toast.LENGTH_SHORT).show();
                    break;
                case R.id.checkBox3:
                    if(isChecked)
                        Toast.makeText(this, "你选定了CheckBox3", Toast.LENGTH_SHORT).show();
                    else
                        Toast.makeText(this, "你取消了CheckBox3", Toast.LENGTH_SHORT).show();
                    break;
            }
        }
    }