android——ToggleButton按钮

来源：互联网发布：php java 比较编辑：程序博客网时间：2024/05/29 15:35

前段

<?xml version="1.0" encoding="utf-8"?><RelativeLayout 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:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    tools:context="com.example.app.MainActivity">//textOn 是改变控件名称的语句    <ToggleButton        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:id="@+id/toggleButton1"         android:textOn="开"        android:textOff="关"        />    <ImageView        android:layout_width="match_parent"        android:layout_height="match_parent"        android:layout_below="@id/toggleButton1"        android:background="@drawable/off"        android:id="@+id/imageView1"        /></RelativeLayout>

后端接口监听器

package com.example.app;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.widget.CompoundButton;import android.widget.ImageView;import android.widget.ToggleButton;public class MainActivity extends AppCompatActivity implements CompoundButton.OnCheckedChangeListener{private ToggleButton bt1;    private ImageView imageView;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        bt1= (ToggleButton) findViewById(R.id.toggleButton1);        imageView= (ImageView) findViewById(R.id.imageView1);        bt1.setOnCheckedChangeListener(this);    }/*先初始化控件*给bt1设置监听器，接口类监听器，来监听控件现在是何种状态** */    @Override    public void onCheckedChanged(CompoundButton compoundButton, boolean b) {        imageView.setBackgroundResource(b?R.drawable.on:R.drawable.off);//改变imageview背景资源        //当tb被点击之后，方法被执行，compoundButton检测当前是什么按钮    }}

0 0