冲刺10

文件创建 缓存文件

package timeline.lizimumu.com.t.log;

import android.os.Environment;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.PrintWriter;

import timeline.lizimumu.com.t.AppConst;

public class FileLogManager {

private static final String ALARM_LOG = "alarm.log";
private static final String LOG_PATH = Environment.getExternalStorageDirectory() + File.separator + AppConst.LOG_DIR;
private static final String LOG_FILE = LOG_PATH + File.separator + ALARM_LOG;
private static FileLogManager mInstance = new FileLogManager();

private FileLogManager() {
}

public static void init() {
new Thread(new Runnable() {
@Override
public void run() {
mInstance.doPrepare();
}
}).run();
}

public static FileLogManager getInstance() {
return mInstance;
}

private void doPrepare() {
File d = new File(LOG_PATH);
boolean m = true;
if (!d.exists()) {
m = d.mkdirs();
}
if (m) {
File f = new File(LOG_FILE);
if (!f.exists()) {
try {
boolean c = f.createNewFile();
if (!c) {
System.err.println("create file error");
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
}

public void log(String message) {

doPrepare();

if (!message.endsWith("\n")) {
message += "\n";
}

FileOutputStream outputStream = null;
PrintWriter writer = null;
try {
outputStream = new FileOutputStream(LOG_FILE, true);
writer = new PrintWriter(outputStream);
writer.write(message);
} catch (FileNotFoundException e) {
e.printStackTrace();
} finally {
if (writer != null) writer.close();
if (outputStream != null) {
try {
outputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}

}
}

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