Android 开发笔记___switch__开关

default switch

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:padding="10dp" >

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        android:paddingTop="10dp" >

        <TextView
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:gravity="left|center_vertical"
            android:text="Switch开关："
            android:textColor="#000000"
            android:textSize="17sp" />

        <LinearLayout
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_gravity="right"
            android:layout_weight="1"
            android:orientation="vertical" >

            <Switch
                android:id="@+id/sw_status"
                android:layout_width="100dp"
                android:layout_height="50dp" />
        </LinearLayout>
    </LinearLayout>

    <TextView
        android:id="@+id/tv_result"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:paddingTop="10dp"
        android:gravity="left"
        android:textColor="#000000"
        android:textSize="17sp" />

</LinearLayout>

package com.example.alimjan.hello_world;

import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.CompoundButton;
import android.widget.Switch;
import android.widget.TextView;

/**
 * Created by alimjan on 7/2/2017.
 */

public class class_3_2_2 extends AppCompatActivity implements CompoundButton.OnCheckedChangeListener {

    private Switch sw_status;
    private TextView tv_result;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.code_3_2_2);
        sw_status = (Switch) findViewById(R.id.sw_status);
        tv_result = (TextView) findViewById(R.id.tv_result);
        sw_status.setOnCheckedChangeListener(this);
        refreshResult();
    }

    private void refreshResult() {
        String result = String.format("Switch按钮的状态是%s",
                (sw_status.isChecked())?"开":"关");
        tv_result.setText(result);
    }

    @Override
    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
        refreshResult();
    }

    public static void startHome(Context mContext) {
        Intent intent = new Intent(mContext, class_3_2_2.class);
        mContext.startActivity(intent);
    }
}

   仿IOS风格

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:padding="10dp" >

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        android:paddingTop="10dp" >

        <TextView
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:gravity="left|center_vertical"
            android:text="仿iOS的开关："
            android:textColor="#000000"
            android:textSize="17sp" />

        <LinearLayout
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_gravity="right"
            android:layout_weight="1"
            android:orientation="vertical" >

            <CheckBox
                android:id="@+id/ck_status"
                android:layout_width="100dp"
                android:layout_height="50dp"
                android:background="@drawable/switch_selector"
                android:button="@null" />
        </LinearLayout>
    </LinearLayout>

    <TextView
        android:id="@+id/tv_result"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:paddingTop="10dp"
        android:gravity="left"
        android:textColor="#000000"
        android:textSize="17sp" />

</LinearLayout>

style

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_checked="true" android:drawable="@drawable/switch_on"/>
    <item android:drawable="@drawable/switch_off"/>
</selector>

java

package com.example.alimjan.hello_world;

import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.TextView;

/**
 * Created by alimjan on 7/2/2017.
 */

public class class_3_2_2_2 extends AppCompatActivity implements CompoundButton.OnCheckedChangeListener {

    private CheckBox ck_status;
    private TextView tv_result;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.code_3_2_2_2);
        ck_status = (CheckBox) findViewById(R.id.ck_status);
        tv_result = (TextView) findViewById(R.id.tv_result);
        ck_status.setOnCheckedChangeListener(this);
        refreshResult();
    }

    private void refreshResult() {
        String result = String.format("仿iOS开关的状态是%s",
                (ck_status.isChecked())?"开":"关");
        tv_result.setText(result);
    }

    @Override
    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
        refreshResult();
    }

    public static void startHome(Context mContext) {
        Intent intent = new Intent(mContext, class_3_2_2_2.class);
        mContext.startActivity(intent);
    }
}