Write the debugging information you applied to the SD card.
package ;
import ;
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/**
* Log log statistics saving
* Can print i, e, w, don't print d
* Every time the application is opened, the last log information will be overwritten
* @author way
*
*/
public class LogcatHelper {
private static LogcatHelper INSTANCE = null;
private static String PATH_LOGCAT;
private LogDumper mLogDumper = null;
private int mPId;
/**
*
* Initialize directory
*
* */
public void init(Context context) {
if (().equals(
Environment.MEDIA_MOUNTED)) {// Priority save to SD cardPATH_LOGCAT = ()
.getAbsolutePath() + + "miniGPS";
} else {// If the SD card does not exist, save it to the directory of this applicationPATH_LOGCAT = ().getAbsolutePath()
+ + "miniGPS";
}
File file = new File(PATH_LOGCAT);
if (!()) {
();
}
}
public static LogcatHelper getInstance(Context context) {
if (INSTANCE == null) {
INSTANCE = new LogcatHelper(context);
}
return INSTANCE;
}
private LogcatHelper(Context context) {
init(context);
mPId = ();
}
public void start() {
if (mLogDumper == null){
mLogDumper = new LogDumper((mPId), PATH_LOGCAT);
}
("path", PATH_LOGCAT);///storage/sdcard0/miniGPS
();
}
public void stop() {
if (mLogDumper != null) {
();
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, "GPS-"
+ () + ".log"));
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
();
}
/**
*
* Log level: *:v , *:d , *:w , *:e , *:f , *:s
*
* Displays the logs of the E and W levels of the current mPID program.
*
* */
// cmds = "logcat *:e *:w | grep \"(" + mPID + ")\"";
// cmds = "logcat | grep \"(" + mPID + ")\"";//Print all log information// cmds = "logcat -s way";//Print label filtering informationcmds = "logcat *:e *:i | grep \"(" + mPID + ")\"";//Can print i, e, w, and will not print d}
public void stopLogs() {
mRunning = false;
}
@Override
public void run() {
try {
logcatProc = ().exec(cmds);
mReader = new BufferedReader(new InputStreamReader(
()), 1024);
String line = null;
while (mRunning && (line = ()) != null) {
if (!mRunning) {
break;
}
if (() == 0) {
continue;
}
if (out != null && (mPID)) {
((() + " " + line + "\n")
.getBytes());
}
}
} catch (IOException e) {
();
} finally {
if (logcatProc != null) {
();
logcatProc = null;
}
if (mReader != null) {
try {
();
mReader = null;
} catch (IOException e) {
();
}
}
if (out != null) {
try {
();
} catch (IOException e) {
();
}
out = null;
}
}
}
}
}
System permissions
<uses-permission android:name=".WRITE_EXTERNAL_STORAGE" /> <uses-permission android:name=".READ_LOGS" />
Time tool class:
package ;
import ;
import ;
public class MyDate {
public static String getFileName() {
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
String date = (new Date(()));
return date;// October 03, 2012 23:41:31}
public static String getDateEN() {
SimpleDateFormat format1 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String date1 = (new Date(()));
return date1;// 2012-10-03 23:41:31
}
}
Method calls:
public class MyApplication extends Application {
@Override
public void onCreate() {
(this).start();
}
}