package com.example.lenovo.app0;
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.TextView;
public class MainActivity extends AppCompatActivity {
private CheckBox checkBox1;
private CheckBox checkBox2;
private CheckBox checkBox3;
private TextView textView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
textView=(TextView)findViewById(R.id.viewText);
checkBox1=(CheckBox)findViewById(R.id.check1);
checkBox2=(CheckBox)findViewById(R.id.check2);
checkBox3=(CheckBox)findViewById(R.id.check3);
MyCheckChange myCheckChange=new MyCheckChange();
checkBox1.setOnCheckedChangeListener(myCheckChange);
checkBox2.setOnCheckedChangeListener(myCheckChange);
checkBox3.setOnCheckedChangeListener(myCheckChange);
}
class MyCheckChange implements CompoundButton.OnCheckedChangeListener{
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
if(buttonView.getId()==R.id.check1){
textView.setText(checkBox1.getText());
}else if(buttonView.getId()==R.id.check2){
textView.setText(checkBox2.getText());
}else if(buttonView.getId()==R.id.check3){
textView.setText(checkBox3.getText());
}
}
}
}
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:orientation="vertical"
android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity">
<TextView
android:id="@+id/viewText"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/app_name"/>
<CheckBox
android:id="@+id/check1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="11111"/>
<CheckBox
android:id="@+id/check2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="22222"/>
<CheckBox
android:id="@+id/check3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="333333"/>
</LinearLayout>