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