Android--Led_Demo_APK控制LED灯

下面代码主要实现接口定义，实现从.so库文件接口函数在JAVA里面的声明；
package com.friendlyarm.AndroidSDK;
import android.util.Log;

public class HardwareControler
{
	/* Serial Port */
	static public native int openSerialPort( String devName, long baud, int dataBits, int stopBits );
	
	/* LED */
	static public native int setLedState( int ledID, int ledState );
    
    /* PWM */
	static public native int PWMPlay(int frequency);
	static public native int PWMStop();
    
    /* ADC */
	static public native int readADC();
	
	/* I2C */
	static public native int openI2CDevice();
	static public native int writeByteDataToI2C(int fd, int pos, byte byteData);
	static public native int readByteDataFromI2C(int fd, int pos);
	
	/* 通用接口 */
	static public native int write(int fd, byte[] data);
	static public native int read(int fd, byte[] buf, int len);
	static public native int select(int fd, int sec, int usec);
	static public native void close(int fd);
    
    static {
        try {
        	System.loadLibrary("friendlyarm-hardware");
        } catch (UnsatisfiedLinkError e) {
            Log.d("HardwareControler", "libfriendlyarm-hardware library not found!");
        }
    }
}

APK的界面部分主要是下面代码实现：

package com.friendlyarm.LEDDemo;
import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;
import android.view.View;
import android.widget.Button;
import android.view.View.OnClickListener;

import com.friendlyarm.AndroidSDK.HardwareControler;

public class LEDTestingActivity extends Activity implements OnClickListener {
	
	private Button btnLED1On; 
	private Button btnLED1Off; 
	private Button btnLED2On; 
	private Button btnLED2Off; 
	private Button btnLED3On; 
	private Button btnLED3Off; 
	private Button btnLED4On; 
	private Button btnLED4Off; 

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
    	btnLED1On = (Button)findViewById(R.id.btnLED1On);
    	btnLED1Off = (Button)findViewById(R.id.btnLED1Off);
    	btnLED2On = (Button)findViewById(R.id.btnLED2On);
    	btnLED2Off = (Button)findViewById(R.id.btnLED2Off);
    	btnLED3On = (Button)findViewById(R.id.btnLED3On);
    	btnLED3Off = (Button)findViewById(R.id.btnLED3Off);
    	btnLED4On = (Button)findViewById(R.id.btnLED4On);
    	btnLED4Off = (Button)findViewById(R.id.btnLED4Off);
    	btnLED1On.setOnClickListener(this);
    	btnLED1Off.setOnClickListener(this);
    	btnLED2On.setOnClickListener(this);
    	btnLED2Off.setOnClickListener(this);
    	btnLED3On.setOnClickListener(this);
    	btnLED3Off.setOnClickListener(this);
    	btnLED4On.setOnClickListener(this);
    	btnLED4Off.setOnClickListener(this);
    }
    
	public void onClick(View v) {
		switch (v.getId()) {
		case R.id.btnLED1On:
			HardwareControler.setLedState(0,1);
			break;
		case R.id.btnLED1Off:
			HardwareControler.setLedState(0,0);
			break;
		case R.id.btnLED2On:
			HardwareControler.setLedState(1,1);
			break;
		case R.id.btnLED2Off:
			HardwareControler.setLedState(1,0);
			break;
		case R.id.btnLED3On:
			HardwareControler.setLedState(2,1);
			break;
		case R.id.btnLED3Off:
			HardwareControler.setLedState(2,0);
			break;
		case R.id.btnLED4On:
			HardwareControler.setLedState(3,1);
			break;
		case R.id.btnLED4Off:
			HardwareControler.setLedState(3,0);
			break;
		default:
			break;
		}
	}
}

 还有一个库文件；

后面再弄上库文件的源代码；现在还没写出来，哈哈；