Android上层读写文件节点,Android上层怎么读写proc节点（示例）

Android上层怎样读写proc节点(示例)

import android.app.Activity;

import android.os.Bundle;

import android.widget.CompoundButton;

import android.widget.CompoundButton.OnCheckedChangeListener;

import android.widget.ToggleButton;

import android.os.SystemProperties;

import android.util.Log;

import android.widget.Toast; //wang

import java.util.Timer;

import java.util.TimerTask;

import android.os.PowerManager;

import java.io.*;

import android.os.Looper;

public class DebugOptionActivity extends Activity

{

private static final String TAG = "tpDebug";

private int checkValue = 0;

@Override

public void onCreate(Bundle savedInstanceState)

{

super.onCreate(savedInstanceState);

setContentView(R.layout.debug);

ToggleButton toggle = (ToggleButton)findViewById(R.id.toggle);

try{

File readFile = new File("proc/tp_debug/debug_switch");

FileReader inCmd = new FileReader(readFile);

try{

checkValue = inCmd.read();

if(checkValue != 0)

{

toggle.setChecked(true);

}

else

{

toggle.setChecked(false);

}

}catch (IOException e){

e.printStackTrace();

}

} catch (FileNotFoundException e){

e.printStackTrace();

}

//ToggleButton toggle = (ToggleButton)findViewById(R.id.toggle);

toggle.setOnCheckedChangeListener(new OnCheckedChangeListener()

{

public void onCheckedChanged(CompoundButton arg0, boolean arg1)

{

if (arg1)

{

//open

File awakeTimeFile = new File("proc/tp_debug/debug_switch");

FileWriter fr;

try {

fr = new FileWriter(awakeTimeFile);

fr.write("1");

fr.close();

}

catch (IOException e) {

e.printStackTrace();

}

}

else

{

//close

File awakeTimeFile = new File("proc/tp_debug/debug_switch");

FileWriter fr;

try

{

fr = new FileWriter(awakeTimeFile);

fr.write("0");

fr.close();

} catch (IOException e) {

e.printStackTrace();

}

}

}

});

}

}