友善之臂Mini6410之Android开发学习笔记（1）-LED Demo

Myth丶恋晨 2022-06-14 10:51 145阅读 0赞

友善之臂Mini6410之Android开发学习笔记源码同步更新，请使用git工具进行同步。关于Git工具更多信息，请参考：[http://progit.org/book/zh/][http_progit.org_book_zh]

git clone https://code.google.com/p/androiddemoformini6410/

LEDActivity.java

package com.mini6410.LED;
    
    import com.friendlyarm.AndroidSDK.HardwareControler;
    import com.mini6410.R;
    
    import android.app.Activity;
    import android.os.Bundle;
    import android.widget.CompoundButton;
    import android.widget.ToggleButton;
    
    /**
     * 
     * ClassName:LEDActivity
     * Reason:	 LED Demo
     *
     * @author   snowdream
     * @version  
     * @since    Ver 1.1
     * @Date	 2011	2012-03-11		16:07
     *
     * @see 	 
     */
    public class LEDActivity extends Activity implements ToggleButton.OnCheckedChangeListener {
    
    	/*四个LED灯，编号ID依次为：LED 0，LED_1，LED_2，LED_3*/
    	public static final int LED_0 = 0;
    	public static final int LED_1 = 1;
    	public static final int LED_2 = 2;
    	public static final int LED_3 = 3;
    
    	/*LED灯的状态： ON 表示点亮， OFF表示熄灭*/
    	public static final int OFF = 0;
    	public static final int ON = 1;
    
    
    	private int mledID = LED_0; 
    	private int mledState = OFF;
    
    
    	private boolean mStop = false;
    
    	/*LED编号数组*/
    	private int[] mleds = new int[]{LED_0,LED_1,LED_2,LED_3};
    
    	/*5个开关按钮*/
    	private ToggleButton mToggleButton_led0 = null;
    	private ToggleButton mToggleButton_led1 = null;
    	private ToggleButton mToggleButton_led2 = null;
    	private ToggleButton mToggleButton_led3 = null;
    	private ToggleButton mToggleButton_ledrandom = null;
    
    
    	@Override
    	protected void onCreate(Bundle savedInstanceState) {
    		super.onCreate(savedInstanceState);
    		setContentView(R.layout.leddemo);
    
    		initUI();
    	}
    
    	/**
    	 * 
    	 * initUI: 初始化UI
    	 *
    	 * @param   
    	 * @return     
    	 * @throws 
    	 */
    	public void initUI(){
    		mToggleButton_led0 = (ToggleButton)findViewById(R.id.button_led0);
    		mToggleButton_led1 = (ToggleButton)findViewById(R.id.button_led1);
    		mToggleButton_led2 = (ToggleButton)findViewById(R.id.button_led2);
    		mToggleButton_led3 =  (ToggleButton)findViewById(R.id.button_led3);
    		mToggleButton_ledrandom = (ToggleButton)findViewById(R.id.button_ledrandom);
    
    		mToggleButton_led0.setOnCheckedChangeListener(this);
    		mToggleButton_led1.setOnCheckedChangeListener(this);
    		mToggleButton_led2.setOnCheckedChangeListener(this);
    		mToggleButton_led3.setOnCheckedChangeListener(this);
    		mToggleButton_ledrandom.setOnCheckedChangeListener(this);		
    	}
    
    	/**
    	 * 
    	 * onCheckedChanged: 开关按钮监听器
    	 *
    	 * @param   buttonView 当前被按下的按钮对象；isChecked表示该按钮的开关状态
    	 * @return     
    	 * @throws 
    	 */
    	public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
    		ToggleButton mToggleButton = (ToggleButton)buttonView;
    
    		if(isChecked)
    			mledState = ON;
    		else
    			mledState = OFF;
    
    		switch (mToggleButton.getId()) {
    		case R.id.button_led0:
    			mledID = LED_0;
    			setLedState(mledID, mledState);
    			break;
    		case R.id.button_led1:
    			mledID = LED_1;
    			setLedState(mledID, mledState);		
    			break;
    		case R.id.button_led2:
    			mledID = LED_2;
    			setLedState(mledID, mledState);				
    			break;
    		case R.id.button_led3:
    			mledID = LED_3;
    			setLedState(mledID, mledState);				
    			break;	
    		case R.id.button_ledrandom:
    			if(isChecked){
    				mStop = false;
    				RandomLight();
    			}else{
    				mStop = true;
    				setALlLightsOff();
    			}
    			break;	
    		default:
    			break;
    		}
    	}
    
    	/**
    	 * 
    	 * setLedState: 设置LED灯的开关
    	 *
    	 * @param   ledID LED灯编号；ledState LED灯的开关状态
    	 * @return     true，表示操作成功；否则返回 false。
    	 * @throws 
    	 */
    	public boolean setLedState(int ledID, int ledState){
    		boolean ret = false;
    		int result = -1;
    
    		result = HardwareControler.setLedState(ledID, ledState);
    
    		if(result == 0)
    			ret = true;
    		else
    			ret = false;
    
    		return ret;
    	}
    
    
    	/**
    	 * 
    	 * RandomLight: 随机点亮LED灯
    	 *
    	 * @param  
    	 * @return     
    	 * @throws 
    	 */
    	public void RandomLight(){
    		new Thread(){
    
    			int mledNum =  mleds.length;
    			int mrandom = 0;
    
    			@Override
    			public void run() {
    
    				while(!mStop){
    					/*从0 1 2 3范围内产生一个整数随机数*/
    					mrandom = (int)(Math.random()*(mledNum));
    
    					/*随机点亮一盏LED灯，然后关闭其他的LED灯*/
    					for(int i = 0; i <mleds.length; i++){
    						if(i == mrandom){
    							setLedState(mleds[i], ON);
    						}else{
    							setLedState(mleds[i], OFF);
    						}
    
    					}
    
    					try {
    						sleep(200);
    					} catch (InterruptedException e) {
    						e.printStackTrace();
    					}
    				}
    
    			}}.start();
    	}
    
    	/**
    	 * 
    	 * setALlLightsOff: 熄灭全部的LED灯
    	 *
    	 * @param  
    	 * @return     
    	 * @throws 
    	 */
    	public void setALlLightsOff(){
    		for(int i = 0; i <mleds.length; i++){
    			setLedState(mleds[i], OFF);
    		}
    	}
    
    	/**
    	 * 
    	 * setALlLightsOn: 点亮全部的LED灯
    	 *
    	 * @param  
    	 * @return     
    	 * @throws 
    	 */
    	public void setALlLightsOn(){
    		for(int i = 0; i <mleds.length; i++){
    			setLedState(mleds[i], ON);
    		}
    	}	
    }

leddemo.xml

<?xml version="1.0" encoding="utf-8"?>
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical" >
    
        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal" >
    
            <LinearLayout
                android:id="@+id/linear_led0"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_margin="5dip"
                android:orientation="vertical" >
    
                <TextView
                    android:id="@+id/textview_led0"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_gravity="center"
                    android:text="@string/led0" >
                </TextView>
    
                <ToggleButton
                    android:id="@+id/button_led0"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content" 
                    android:textOff="@string/textoff"
                    android:textOn="@string/texton" >
                </ToggleButton>
            </LinearLayout>
    
            <LinearLayout
                android:id="@+id/linear_led1"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_margin="5dip"
                android:orientation="vertical" >
    
                <TextView
                    android:id="@+id/textview_led1"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_gravity="center"
                    android:text="@string/led1" >
                </TextView>
    
                <ToggleButton
                    android:id="@+id/button_led1"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content" 
                    android:textOff="@string/textoff"
                    android:textOn="@string/texton" >
                </ToggleButton>
            </LinearLayout>
    
            <LinearLayout
                android:id="@+id/linear_led2"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_margin="5dip"
                android:orientation="vertical" >
    
                <TextView
                    android:id="@+id/textview_led2"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_gravity="center"
                    android:text="@string/led2" >
                </TextView>
    
                <ToggleButton
                    android:id="@+id/button_led2"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content" 
                    android:textOff="@string/textoff"
                    android:textOn="@string/texton" >
                </ToggleButton>
            </LinearLayout>
    
            <LinearLayout
                android:id="@+id/linear_led3"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_margin="5dip"
                android:orientation="vertical" >
    
                <TextView
                    android:id="@+id/textview_led3"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_gravity="center"
                    android:text="@string/led3" >
                </TextView>
    
                <ToggleButton
                    android:id="@+id/button_led3"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:textOff="@string/textoff"
                    android:textOn="@string/texton" >
                </ToggleButton>
            </LinearLayout>
        </LinearLayout>
    
        <LinearLayout
            android:id="@+id/linear_ledrandom"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_margin="5dip"
            android:orientation="vertical" >
    
            <TextView
                android:id="@+id/textview_ledrandom"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center"
                android:text="@string/ledrandom" >
            </TextView>
    
            <ToggleButton
                android:id="@+id/button_ledrandom"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center"
                android:textOff="@string/textoff"
                android:textOn="@string/texton" >
            </ToggleButton>
        </LinearLayout>
    
    </LinearLayout>

预览效果：

![0_133145445608pe.gif][]

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