寒假学习11

Android Studio:RadioButton

MainActivity

package com.example.myapplicationfirst;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.RadioButton;

public class MainActivity extends AppCompatActivity {

    //声明空间
    private Button mBtnTextView;
    private Button mBtnButton;
    private Button mBtnEditText;
    private Button mBtnRadioButton;

    //寻找事件
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mBtnTextView = findViewById(R.id.btn_textview);
        mBtnButton = findViewById(R.id.btn_button);
        mBtnEditText = findViewById(R.id.btn_edittext);
        mBtnRadioButton = findViewById(R.id.btn_radiobutton);
        setListeners();
    }

    //监听事件
    private void setListeners(){
        OnClick onClick = new OnClick();
        mBtnTextView.setOnClickListener(onClick);
        mBtnButton.setOnClickListener(onClick);
        mBtnEditText.setOnClickListener(onClick);
        mBtnRadioButton.setOnClickListener(onClick);
    }

    //点击事件
    private class OnClick implements View.OnClickListener{

        @Override
        public void onClick(View v) {
            Intent intent = null;
            switch (v.getId()){
                case R.id.btn_textview:
                    //跳转到TextView演示界面
                    intent = new Intent(MainActivity.this,TextViewActivity.class);
                    break;
                case R.id.btn_button:
                    //跳转到Button演示界面
                    intent = new Intent(MainActivity.this,ButtonActivity.class);
                    break;
                case R.id.btn_edittext:
                    //跳转到EditText演示界面
                    intent = new Intent(MainActivity.this,EditTextActivity.class);
                    break;
                case R.id.btn_radiobutton:
                    //跳转到RadioButton演示界面
                    intent = new Intent(MainActivity.this, RadioButtonActivity.class);
                    break;
            }
            startActivity(intent);
        }
    }
}

RadioButtonActivity

package com.example.myapplicationfirst;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.Toast;

public class RadioButtonActivity extends AppCompatActivity {

    private RadioGroup mRg1;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_radio_button);
        mRg1 = findViewById(R.id.rg_1);
        mRg1.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(RadioGroup group, int checkedId) {
                RadioButton radioButton = findViewById(checkedId);
                Toast.makeText(RadioButtonActivity.this, radioButton.getText(), Toast.LENGTH_SHORT).show();
            }
        });
    }
}

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <Button
        android:id="@+id/btn_textview"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="TextView"
        android:textAllCaps="false"/>

    <Button
        android:id="@+id/btn_button"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Button"
        android:textAllCaps="false"/>

    <Button
        android:id="@+id/btn_edittext"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="EditText"
        android:textAllCaps="false"/>

    <Button
        android:id="@+id/btn_radiobutton"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="RadioButton"
        android:textAllCaps="false"/>

</LinearLayout>

activity_radio_button.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:padding="20dp">

    <RadioGroup
        android:id="@+id/rg_1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal">

        <RadioButton
            android:id="@+id/rb_1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:checked="true"
            android:text="男"
            android:textSize="32sp"/>

        <RadioButton
            android:id="@+id/rb_2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="女"
            android:textSize="32sp"
            android:layout_marginLeft="50dp"/>

    </RadioGroup>

    <RadioGroup
        android:id="@+id/rg_2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        android:layout_below="@id/rg_1"
        android:layout_marginTop="50dp">

        <RadioButton
            android:id="@+id/rb_3"
            android:layout_width="100dp"
            android:layout_height="50dp"
            android:gravity="center"
            android:button="@null"
            android:text="选项一"
            android:textSize="32sp"
            android:background="@drawable/selector_orange_radiobutton" />

        <RadioButton
            android:id="@+id/rb_4"
            android:layout_width="100dp"
            android:layout_height="50dp"
            android:gravity="center"
            android:button="@null"
            android:text="选项二"
            android:textSize="32sp"
            android:layout_marginTop="10dp"
            android:background="@drawable/selector_orange_radiobutton" />

        <RadioButton
            android:id="@+id/rb_5"
            android:layout_width="100dp"
            android:layout_height="50dp"
            android:gravity="center"
            android:button="@null"
            android:text="选项三"
            android:textSize="32sp"
            android:layout_marginTop="10dp"
            android:background="@drawable/selector_orange_radiobutton" />

        <RadioButton
            android:id="@+id/rb_6"
            android:layout_width="100dp"
            android:layout_height="50dp"
            android:gravity="center"
            android:button="@null"
            android:text="选项四"
            android:textSize="32sp"
            android:layout_marginTop="10dp"
            android:background="@drawable/selector_orange_radiobutton" />

    </RadioGroup>

</RelativeLayout>

res>drawable>selector_orange_radiobutton.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_checked="true">
        <shape>
            <solid android:color="#FFA011"/>
            <corners android:radius="10dp"/>
        </shape>
    </item>

    <item android:state_checked="false">
        <shape>
            <stroke android:width="1dp"
                android:color="#FFA011"/>
            <corners android:radius="10dp"/>
        </shape>
    </item>

</selector>