Question

/ 我试图在检查时禁用并启用按钮而不是......但是在OnCheckedChangedListener（）中显示Class'从OnCheckedChangedListener派生的匿名类'必须被声明为abstract或实现抽象方法'onCheckedChanged（ 'OnCheckedChangeLisner'中的CompoundButton，bolean）' /

package com.example.amby.mobihut;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.RadioGroup;
import android.widget.TextView;
import android.widget.Toast;

import static android.R.attr.start;

public class SignInScreen extends AppCompatActivity  {
    AsyncResponse delegate;
    Button btn;
    CheckBox checkBox;

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

        //context = this;
        //final Context context = this;


        btn = (Button) findViewById(R.id.btn_signup);
        btn.setEnabled(false);
        checkBox = (CheckBox) findViewById(R.id.checkBox);
        checkBox.setOnCheckedChangeListener(new OnCheckedChangeListener() {
            public void OnCheckedChanged(CompoundButton buttonView, boolean isChecked)
            {
                if(isChecked)
                {
                    btn.setEnabled(true);
                }
                else
                {
                    btn.setEnabled(false);
                }
            }
                                            }
        );

    }
    //public void processFinish(String output){}
}

Answer 1

尝试使用setOnClickListener

CheckBox checkBox = (CheckBox) findViewById (R.id.yourId);

checkBox.setOnClickListener(new OnClickListener() {

  @Override
  public void onClick(View v) {
            //is chkIos checked?
    if (((CheckBox) v).isChecked()) {
                     //Case 1
    }
    else 
      //case 2

  }
});

Answer 2

您需要覆盖onCheckedChangeListener。在 public void onCheckedChanged（..）之上添加@Override。在这方面：

checkBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
        @Override
        public void onCheckedChanged(CompoundButton compoundButton, boolean b) {

        }
    });

我正在尝试禁用并启用按钮，而不是

2 个答案: