Tiny4412 LED 程序

package cn.hyc.led;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.widget.Button;

public class MainActivity extends Activity {

    private Button led1, led2, led3, led4;
    private boolean led1OnOFF = false;
    private boolean led2OnOFF = false;
    private boolean led3OnOFF = false;
    private boolean led4OnOFF = false;

    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        led1 = (Button)this.findViewById(R.id.led1);
        led2 = (Button)this.findViewById(R.id.led2);
        led3 = (Button)this.findViewById(R.id.led3);
        led4 = (Button)this.findViewById(R.id.led4);

        led1.setOnClickListener(new OnClickLed());
        led2.setOnClickListener(new OnClickLed());
        led3.setOnClickListener(new OnClickLed());
        led4.setOnClickListener(new OnClickLed());

    }

    public class OnClickLed implements View.OnClickListener{
		public void onClick(View v) {
				switch (v.getId()) {
				case R.id.led1:
							if(led1OnOFF){
								cmdLeds(0, 0);
								led1OnOFF = false;
							}	else{
								cmdLeds(1, 0);
								led1OnOFF = true;
							}
					break;
				case R.id.led2:
							if(led2OnOFF){
								cmdLeds(0, 1);
								led2OnOFF = false;
							}	else{
								cmdLeds(1, 1);
								led2OnOFF = true;
							}
					break;
				case R.id.led3:
							if(led3OnOFF){
								cmdLeds(0, 2);
								led3OnOFF = false;
							}	else{
								cmdLeds(1, 2);
								led3OnOFF = true;
							}
					break;
				case R.id.led4:
						if(led4OnOFF){
							cmdLeds(0, 3);
							led4OnOFF = false;
						}	else{
							cmdLeds(1, 3);
							led4OnOFF = true;
						}
					break;
				default:
					break;
				}
		}
    } 

   public native void cmdLeds(int cmd, int arg);
    static
    {
    		System.loadLibrary("leds");
    }

    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

}

#include <jni.h>
#include <fcntl.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <stdlib.h>

 void Java_cn_hyc_led_MainActivity_cmdLeds( JNIEnv* env, jobject thiz, jint cmd, jint arg)
{

    int dev;
    dev = open("/dev/leds", O_WRONLY);
    ioctl(dev, cmd, arg);
    close(dev);
}

LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
LOCAL_MODULE    := leds
LOCAL_SRC_FILES := leds.c
include $(BUILD_SHARED_LIBRARY)