概述
核心:将logcat命令打印出的东西打印至本地
显示当前pid(进程)程序的 E和W等级的日志(日志等级:*:v , *:d , *:w , *:e , *:f , *: s)
// cmds = “logcat *:e *:w | grep “(” + pid+ “)””;
// cmds = “logcat | grep “(” + pid+ “)””;//打印所有日志信息
// cmds = “logcat -s way”;//打印标签过滤信息
//设置打印w级别以上的日志
cmds = “logcat *: D | grep “(” + pid+ “)””;
/**
*
* @ClassName: LogcatHelper
*
* @Author: along
*
* @Description: 本地日志工具类
*
* @CreateDate: 2019/8/21 3:37 PM
*
*/
public class LogcatHelper {
private static LogcatHelper INSTANCE = null;
private static String PATH_LOGCAT;
private LogDumper mLogDumper = null;
private int mPId;//当前进程id
/**
*
* 初始化目录
*
* */
public void init(Context context) {
PATH_LOGCAT=context.getExternalFilesDir("")+File.separator+"run";
File file = new File(PATH_LOGCAT);
if (!file.exists()) {
file.mkdirs();
}
}
public static LogcatHelper getInstance(Context context) {
if (INSTANCE == null) {
INSTANCE = new LogcatHelper(context);
}
return INSTANCE;
}
private LogcatHelper(Context context) {
init(context);
mPId = android.os.Process.myPid();
}
public void start() {
if (mLogDumper == null)
mLogDumper = new LogDumper(String.valueOf(mPId), PATH_LOGCAT);
mLogDumper.start();
}
public void stop() {
if (mLogDumper != null) {
mLogDumper.stopLogs();
mLogDumper = null;
}
}
private class LogDumper extends Thread {
private Process logcatProc;
private BufferedReader mReader = null;
private boolean mRunning = true;
String cmds = null;
private String mPID;
private FileOutputStream out = null;
public LogDumper(String pid, String dir) {
mPID = pid;
try {
out = new FileOutputStream(new File(dir, "Logcat-"
+ MyDate.getFileName() + ".log"));
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
/**
*
* 日志等级:*:v , *:d , *:w , *:e , *:f , *:s
*
* 显示当前mPID程序的 E和W等级的日志.
*
* */
// cmds = "logcat *:e *:w | grep "(" + mPID + ")"";
// cmds = "logcat | grep "(" + mPID + ")"";//打印所有日志信息
// cmds = "logcat -s way";//打印标签过滤信息
//设置打印w级别以上的日志
cmds = "logcat *:D | grep "(" + mPID + ")"";
}
public void stopLogs() {
mRunning = false;
}
@Override
public void run() {
try {
logcatProc = Runtime.getRuntime().exec(cmds);
mReader = new BufferedReader(new InputStreamReader(
logcatProc.getInputStream()), 1024);
String line = null;
while (mRunning && (line = mReader.readLine()) != null) {
if (!mRunning) {
break;
}
if (line.length() == 0) {
continue;
}
if (out != null && line.contains(mPID)) {
out.write((MyDate.getDateEN() + " " + line + "n")
.getBytes());
}
}
} catch (IOException e) {
e.printStackTrace();
} finally {
if (logcatProc != null) {
logcatProc.destroy();
logcatProc = null;
}
if (mReader != null) {
try {
mReader.close();
mReader = null;
} catch (IOException e) {
e.printStackTrace();
}
}
if (out != null) {
try {
out.close();
} catch (IOException e) {
e.printStackTrace();
}
out = null;
}
}
}
}
public static class MyDate {
public static String getFileName() {
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
String date = format.format(new Date(System.currentTimeMillis()));
return date;// 2012年10月03日 23:41:31
}
public static String getDateEN() {
SimpleDateFormat format1 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String date1 = format1.format(new Date(System.currentTimeMillis()));
return date1;// 2012-10-03 23:41:31
}
}
}
最后
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